subject:(Nutrient retention)

University of Hawaii – Manoa

1. Berek, Arnoldus Klau. Biochar as an Amendment to Acid Soils.

Degree: 2017, University of Hawaii – Manoa

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Ph.D. University of Hawaii at Manoa 2015.

The capacity of biochar to improve acid soil productivity and enhance nutrient retention was the main focus of… (more)

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Ph.D. University of Hawaii at Manoa 2015.

The capacity of biochar to improve acid soil productivity and enhance nutrient retention was the main focus of this study. The specific objectives were to characterize six wood-derived biochars, to assess biochars’ liming effects on Hawaiian and Indonesian acid soils, and to study nutrient retention of biochars. Six and another two biochars were collected, characterized, and then were used to evaluate their liming effect on a Hawaiian and two Indonesian acid soils with Desmodium intortum and soybean (Glycine max) as test plants, respectively. Two biochars in combination with two composts (both at 2%) as nutrient sources were used to investigate their nutrient retention with pak choi (Brassica rapa) as the test plant. The results showed that six wood-derived biochars were different in their properties, including ash content, pH, cation exchange capacity (CEC), CaCO3 equivalent, basic cations and surface functional groups. Based on their CaCO3 equivalent, leucaena (Leucaena leucocephala) and lac tree (Schleichera oleosa), Hilo mixed wood and she oak (Casuarina junghuhniana), and mahogany (Sweitenia mahagoni) and mountain gum (Eucalyptus urophylla), were grouped into the highest, moderate, and lowest liming potential biochars, respectively. Additions of six biochars at 2% and 4% with or without 2 cmolc/kg of lime to a Hawaiian acid soil increased soil pH and CEC, reduced exchangeable Al, enriched plant nutrients and enhanced Desmodium growth with lac tree and leucaena being most effective, followed by she oak and Hilo mixed wood biochars. Similar results were obtained from lac tree wood and rice husk biochars (4 and 8%) applied to two Indonesian acid soils. Addition of lac tree wood and Hilo mixed wood biochars in combination with vermicompost or thermocompost to a Ultisol and a Oxisol of Hawaii showed a positive interaction effect on EC, P and K, cabbage fresh and dry matters. Biochars increased soil pH, plant tissue Ca, retention of K, Ca and Mg, and reduced exchangeable Al in both soils. Overall, the liming capacity and nutrient retention potential of selected biochars have been positive.

Subjects/Keywords: biochar; liming potential; nutrient retention

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APA (6^th Edition):

Berek, A. K. (2017). Biochar as an Amendment to Acid Soils. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/50959

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Berek, Arnoldus Klau. “Biochar as an Amendment to Acid Soils.” 2017. Thesis, University of Hawaii – Manoa. Accessed January 26, 2021. http://hdl.handle.net/10125/50959.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Berek, Arnoldus Klau. “Biochar as an Amendment to Acid Soils.” 2017. Web. 26 Jan 2021.

Vancouver:

Berek AK. Biochar as an Amendment to Acid Soils. [Internet] [Thesis]. University of Hawaii – Manoa; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10125/50959.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Berek AK. Biochar as an Amendment to Acid Soils. [Thesis]. University of Hawaii – Manoa; 2017. Available from: http://hdl.handle.net/10125/50959

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

2. Pinney, Jenae Elizabeth. Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream.

Degree: MS, Biological Systems Engineering, 2011, Virginia Tech

URL: http://hdl.handle.net/10919/76801

► The sediment-water interface is an active biogeochemical zone within streams, where solutes come in contact with mineral surfaces, biota, and reducing conditions. Here, we sought… (more)

Subjects/Keywords: DOM; Ammonium; Phosphorus; Nitrate; Nutrient Retention

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APA (6^th Edition):

Pinney, J. E. (2011). Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/76801

Chicago Manual of Style (16^th Edition):

Pinney, Jenae Elizabeth. “Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream.” 2011. Masters Thesis, Virginia Tech. Accessed January 26, 2021. http://hdl.handle.net/10919/76801.

MLA Handbook (7^th Edition):

Pinney, Jenae Elizabeth. “Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream.” 2011. Web. 26 Jan 2021.

Vancouver:

Pinney JE. Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream. [Internet] [Masters thesis]. Virginia Tech; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10919/76801.

Council of Science Editors:

Pinney JE. Influence of light and algae on nutrient transformations at the sediment-water interface of an agricultural stream. [Masters Thesis]. Virginia Tech; 2011. Available from: http://hdl.handle.net/10919/76801

Virginia Tech

3. Wang, Chih-Yu. Floating wetlands for urban stormwater treatment.

Degree: PhD, Biological Systems Engineering, 2013, Virginia Tech

URL: http://hdl.handle.net/10919/52036

► A floating treatment wetland (FTW) is an ecological approach which seeks to reduce point and nonpoint source pollution by installing substrate rooted plants grown on… (more)

▼ A floating treatment wetland (FTW) is an ecological approach which seeks to reduce point and nonpoint source pollution by installing substrate rooted plants grown on floating mats in open waters. While relatively novel, FTW use is increasing. A review of literature identified several research gaps, including: (1) assessments of the treatment performance of FTWs; (2) evaluations of FTWs in the U.S., particularly within wet ponds that receive urban runoff; and (3) plant temporal nutrient distribution, plant growth rate, and the long-term persistence of the FTWs in temperate regions with periodic ice encasement. An assessment model, i-FTW model, was developed, and its parameter s fitted based on data from 14 published FTW studies in the first research topic. The estimated median FTW apparent uptake velocity with 95% confidence interval were 0.048 (0.018 - 0.059) and 0.027 (0.016 - 0.040) m/day for total phosphorus (TP) and total nitrogen (TN), respectively. The i-FTW model provided a more accurate prediction in nutrient removal than two common performance metrics: removal rate (mg/m2/day) and removal efficiency (%). In the second research topic, the results of a mesocosm experiment indicated that FTWs with 61% coverage, planted with pickerelweed (Pontederia cordata L.) or softstem bulrush (Schoenoplectus tabernaemontani), significantly improved TP and TN removal efficiency of the control treatment by 8.2% and 18.2%, respectively. The pickerelweed exhibited significantly higher phosphorus and nitrogen removal than the softstem bulrush when water temperatures were greater than 25 deg C. Field observations in the third research topic found that pickerelweed demonstrated higher phosphorus removal performance (7.58 mg/plant) than softstem bulrush (1.62 mg/plant). Based on the observed seasonal changes in phosphorus distribution, harvest of above-ground vegetation is recommended to be conducted twice a year in June and September. Planted perennial macrophytes successfully adapted to stresses of the low dissolved oxygen (DO) concentrations (minimum: 1.2 mg/L), ice encasement, and relatively low nutrient concentrations in the water (median: 0.15 mg/L TP and 1.15 mg/L TN). Systematic observation of wildlife activities indicated eight classes of organisms inhabiting, foraging, breeding, nursing, or resting in the FTWs. Recommendations for FTW design and suggestions for further research are made based upon these findings. Advisors/Committee Members: Sample, David J. (committeechair), Day, Susan D. (committee member), Thompson, Theresa M. (committee member), Gallagher, Daniel L. (committee member), Grizzard, Thomas J. (committee member).

Subjects/Keywords: Retention ponds; Nutrient control; Performance assessment; Nutrient harvest; Sustainability.

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APA (6^th Edition):

Wang, C. (2013). Floating wetlands for urban stormwater treatment. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/52036

Chicago Manual of Style (16^th Edition):

Wang, Chih-Yu. “Floating wetlands for urban stormwater treatment.” 2013. Doctoral Dissertation, Virginia Tech. Accessed January 26, 2021. http://hdl.handle.net/10919/52036.

MLA Handbook (7^th Edition):

Wang, Chih-Yu. “Floating wetlands for urban stormwater treatment.” 2013. Web. 26 Jan 2021.

Vancouver:

Wang C. Floating wetlands for urban stormwater treatment. [Internet] [Doctoral dissertation]. Virginia Tech; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10919/52036.

Council of Science Editors:

Wang C. Floating wetlands for urban stormwater treatment. [Doctoral Dissertation]. Virginia Tech; 2013. Available from: http://hdl.handle.net/10919/52036

University of Guelph

4. Snider-Nevin, Jeffrey. Enhancing Energy Recoverability of Municipal Wastewater.

Degree: Master of Applied Science, School of Engineering, 2013, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/6658

► Wastewater contains many valuable constituents, including phosphorus, nitrogen and more energy than what is required to treat it. This, combined with increasingly more stringent effluent… (more)

Subjects/Keywords: Membrane bioreactor; Energy recovery; short sludge retention time; membrane fouling; nutrient recovery; biological nutrient removal

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APA (6^th Edition):

Snider-Nevin, J. (2013). Enhancing Energy Recoverability of Municipal Wastewater. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/6658

Chicago Manual of Style (16^th Edition):

Snider-Nevin, Jeffrey. “Enhancing Energy Recoverability of Municipal Wastewater.” 2013. Masters Thesis, University of Guelph. Accessed January 26, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/6658.

MLA Handbook (7^th Edition):

Snider-Nevin, Jeffrey. “Enhancing Energy Recoverability of Municipal Wastewater.” 2013. Web. 26 Jan 2021.

Vancouver:

Snider-Nevin J. Enhancing Energy Recoverability of Municipal Wastewater. [Internet] [Masters thesis]. University of Guelph; 2013. [cited 2021 Jan 26]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/6658.

Council of Science Editors:

Snider-Nevin J. Enhancing Energy Recoverability of Municipal Wastewater. [Masters Thesis]. University of Guelph; 2013. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/6658

Linköping University

5. Lannergård, Emma. Drained land and nutrient transport in the river Svärtaå catchment.

Degree: The Tema Institute, 2011, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69685

► Land use changes such as lowering of lakes, draining of wetlands and channelizing of streams have affected the hydrological environment in many catchment areas.… (more)

▼ Land use changes such as lowering of lakes, draining of wetlands and channelizing of streams have affected the hydrological environment in many catchment areas. Numerous studies report that these changes affect the nutrient retention. The river Svärtaå catchment, near Nyköping is identified as one of the areas in Sweden that transport most phosphorus and nitrogen to the Baltic Sea per unit area. The aim of this study was therefore to analyse to which extent land use changes such as lowering of lakes, draining of wetlands and channelizing of streams have affected the nutrient transport to the Baltic Sea. Land use changes were to a large extent performed between the years 1880 and 1930 inSweden, historical maps from the late 19^th century have therefore been studied. An application based on the concept of a Geographical Information System (GIS) has been used in order to compare the district map from late 19^th century and the terrain map from today. To address the nutrient transport retention coefficients have been found in the literature and implemented on the changes in water area. Changes in the hydrological environment reached totally1068 ha,964 hawere decreasing water areas and104 haincreasing water areas. Wet areas totally decreased with 28 % when the historical setting was compared with the contemporary environment. The loss in wet area represents860 ha. Watercourses with riparian zones have decreased with 54 %, bogs with 53 %, wetlands with 43 % and lakes with 13 %. The loss in retained mass regarding phosphorus was, based on calculations involving retention coefficients, 7,18 – 146 tonnes, and regarding nitrogen 37,9 – 941 tonnes. The changes in the catchment are probably connected to measures like lowering of lakes, draining of wetlands and channelizing of streams. The assumed lost retained masses shows to be high compared to the measured output from the catchment. This leads to questioning of the retention coefficients and the vast range between them, as well as questioning of other assumptions in the method. The consequences of the hydrological changes are therefore difficult to evaluate.

Subjects/Keywords: River Svärtaå; land use changes; nutrient retention; historical maps; retention coefficients; NATURAL SCIENCES; NATURVETENSKAP

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APA (6^th Edition):

Lannergård, E. (2011). Drained land and nutrient transport in the river Svärtaå catchment. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69685

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lannergård, Emma. “Drained land and nutrient transport in the river Svärtaå catchment.” 2011. Thesis, Linköping University. Accessed January 26, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69685.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lannergård, Emma. “Drained land and nutrient transport in the river Svärtaå catchment.” 2011. Web. 26 Jan 2021.

Vancouver:

Lannergård E. Drained land and nutrient transport in the river Svärtaå catchment. [Internet] [Thesis]. Linköping University; 2011. [cited 2021 Jan 26]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69685.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lannergård E. Drained land and nutrient transport in the river Svärtaå catchment. [Thesis]. Linköping University; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-69685

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

6. Karunaratne, Namalika D 1986-. IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS.

Degree: 2016, University of Saskatchewan

URL: http://hdl.handle.net/10388/7321

► Two experiments were conducted to investigate the effect of Western Canadian wheat market classes and cultivars on rate and extent of starch digestibility in broiler… (more)

▼ Two experiments were conducted to investigate the effect of Western Canadian wheat market classes and cultivars on rate and extent of starch digestibility in broiler chickens. The first experiment was an in vitro trial to determine starch digestibility rate and extent by mimicking chicken gastric and small intestinal (SI) phases. The study evaluated 18 spring wheat cultivars from eight Western Canadian wheat market classes. Each cultivar was replicated four times by growing them at four separate plots in a field nursery at Saskatoon, SK. Grain characteristics of these wheat cultivars were analyzed to determine the relationship with starch digestibility. The second experiment was designed to investigate genotypic variability of starch digestibility rate and extent, and also AMEn using broiler chickens. A total of 468 1-d-old male broiler chickens were randomly assigned to dietary treatments (6 cages/treatment, 6 birds/cage) from 0 to 21 day of age. The study evaluated two wheat cultivars from each of six Western Canadian wheat classes (selected according to the results of Experiment 1). Wheat cultivars were also subjected to in vitro starch digestion and grain characteristic analysis. Experiments 1 and 2 were completely randomized and randomized complete block designs, respectively. Wheat cultivars were nested within wheat market classes in both experiments. Differences were considered significant when P < 0.05. Pearson correlation was used to determine correlations. In vitro starch digestibility was affected by wheat market class and cultivar nested within class according to results of Experiment 1. Starch digestibility ranges of wheat classes for the selected SI phase times are as follows: 15 min – 33.1 to 49.1%, 60 min – 80.2 to 93.3% and 120 min – 92.4 to 97.6%. Low to moderate positive correlations were found for starch digestibility rate and extent with CP, ash, NSP and large granule size distribution, whereas negative correlations were found with total starch (TS), and small and medium granule proportions. According to Experiment 2 results, the starch digestibility ranges were: proximal jejunum – 23.7 to 50.6%; distal jejunum – 63.5 to 76.4%; proximal ileum – 88.7 to 96.9%; distal ileum – 94.4 to 98.5%; excreta – 98.4 to 99.3%. Wheat class affected wheat AMEn with levels ranging from 3203 to 3411 kcal/kg at 90% DM. In vivo starch digestibility in all four segments of SI and total tract starch digestibility were affected by wheat market class. Moderate positive correlations were found for in vitro starch digestibility with CP and large granule size distribution, whereas it was negative with TS, and small and medium granule proportions. There were moderate positive correlations for in vivo starch digestibility with wheat hardness and ash content. Significant and moderate strong positive correlations were observed between in vitro and in vivo starch digestion rate, but no correlations were found between AMEn and starch digestion rate. In conclusion, rate and extent of both in vitro and in vivo starch… Advisors/Committee Members: Classen, Henry L, Mutsvangwa, Timothy, Hood-Niefer, Shannon, Chibbar, Ravindra N, Hucl, Pierre J, Scott, Tom.

Subjects/Keywords: wheat; AME; starch fermentation; nutrient retention; metabolism; poultry

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APA (6^th Edition):

Karunaratne, N. D. 1. (2016). IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7321

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Karunaratne, Namalika D 1986-. “IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS.” 2016. Thesis, University of Saskatchewan. Accessed January 26, 2021. http://hdl.handle.net/10388/7321.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Karunaratne, Namalika D 1986-. “IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS.” 2016. Web. 26 Jan 2021.

Vancouver:

Karunaratne ND1. IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10388/7321.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Karunaratne ND1. IN VITRO AND IN VIVO ASSESSMENT OF RATE AND EXTENT OF STARCH DIGESTIBILITY IN WESTERN CANADIAN WHEAT MARKET CLASSES AND CULTIVARS IN BROILER CHICKENS. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7321

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Adelaide

7. Kasan, Nor Azman. Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia.

Degree: 2011, University of Adelaide

URL: http://hdl.handle.net/2440/71850

► The Cox Creek sub-catchment is located in the Piccadilly Valley, South Australia. It exports disproportionately high loads of nutrients and sediment to the downstream Mount… (more)

▼ The Cox Creek sub-catchment is located in the Piccadilly Valley, South Australia. It exports disproportionately high loads of nutrients and sediment to the downstream Mount Bold reservoir. The excessive application of inorganic fertilisers to agricultural land in the Cox Creek sub-catchment has enhanced nutrient exports downstream. This has led to eutrophication and algal blooms in Mount Bold Reservoir, an important water supply for the city of Adelaide, which has a population of approximately 1.3 million people. The Cox Creek constructed wetland includes a sedimentation basin and a series of constructed wetland ponds, which were implemented to reduce nutrient loads passing downstream. The objective of this research was to evaluate the capacity of the constructed wetlands to retain nutrients and better understand key processes for nutrient retention such as macrophyte uptake, sediment sorption and sedimentation in the Cox Creek wetland system. How different flow regimes influence these processes was also investigated. Based on historical inflow and outflow data from 2004 to 2009 for the Cox Creek wetland system, six different flow rate classes were classified and the nutrient loads delivered by each of these flow rate classes were calculated. It was hypothesized that the higher the flow class the shorter the water residence time and so reduced opportunity for nutrient retention through processes such as sedimentation. The very dry flow class (0 to 1 ML day⁻¹) had the longest water residence time (14.8 days) and contributed the lowest total phosphorus (TP) and total nitrogen (TN) loads (TP: 10.2 kg yr⁻¹ and TN: 81.0 kg yr⁻¹). In comparison, the high flow class (46 to 300 ML day⁻¹) had the shortest water residence time (0.1 days) and contributed the highest nutrient loads (TP: 433.4 kg yr⁻¹ and TN: 1726.2 kg yr⁻¹). The percentage of TP and TN retention (TP: 60 to 69% and TN: 18 to 76%) showed that nutrient loads at the inflow were greater than that of the outflow after the construction of the wetland in 2006. Therefore there was a net retention of nutrients in the Cox Creek wetland system during the study period, suggesting it is effective at reducing nutrient loads passing downstream. In order to investigate the ability of macrophytes to store nutrients, the seasonal TP and TN storage by Schoenoplectus validus and Phragmites australis were compared between Reed Bed and Pond 1 of Cox Creek wetland system. The TP and TN storage were significantly higher in Reed Bed (TP: 22.0 gP m⁻² and TN: 118.5 gP m⁻²) than in Pond 1 (TP: 1.0 gP m⁻² and TN: 10.3 gP m⁻²). TP storage peaked in spring 2008 for S. validus and P. australis in Pond 1. This was also the case for S. validus in Reed Bed, but TP storage peaked in summer 2009 for P. australis in Reed Bed. TN storage peaked in spring 2008 by both species in Reed Bed. This was also the case for S. validus in Pond 1, but TN storage peaked in summer 2009 for P. australis in Pond 1. Based on the results, it appears that the presence of macrophytes can reduce nutrient loads passing… Advisors/Committee Members: Recknagel, Friedrich Adolf (advisor), Brookes, Justin D. (advisor), Aldridge, Kane Thomas (advisor), School of Earth and Environmental Sciences (school).

Subjects/Keywords: nutrient retention; wetland; macrophytes; phosphorus sorption; sedimentation; phosphorus mass balance

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APA (6^th Edition):

Kasan, N. A. (2011). Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/71850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kasan, Nor Azman. “Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia.” 2011. Thesis, University of Adelaide. Accessed January 26, 2021. http://hdl.handle.net/2440/71850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kasan, Nor Azman. “Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia.” 2011. Web. 26 Jan 2021.

Vancouver:

Kasan NA. Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia. [Internet] [Thesis]. University of Adelaide; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2440/71850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kasan NA. Nutrient retention capacity of a constructed wetland in the Cox Creek sub-catchment of the Mt. Bold Reservoir, South Australia. [Thesis]. University of Adelaide; 2011. Available from: http://hdl.handle.net/2440/71850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Edinburgh

8. Dong, Yu. Application of integrated constructed wetlands for contaminant treatment and diffusion.

Degree: PhD, 2013, University of Edinburgh

URL: http://hdl.handle.net/1842/7750

► The sediment accumulation is an important characteristic in the ageing process of integrated constructed wetlands (ICW). Retained nutrient and other contaminants in wetland sediments have… (more)

▼ The sediment accumulation is an important characteristic in the ageing process of integrated constructed wetlands (ICW). Retained nutrient and other contaminants in wetland sediments have the potential to be remobilized and released to the overlying water column when environmental conditions change. In this study, mesocosms which filled with saturated sediments and planted with Phragmites australis and Agrostis stolonifera were set up to examine nutrient and other contaminants retention and/or release by wetland sediment and substrates. The effects of physico-chemical parameters on sediment-water contaminant exchange were also investigated through the application of multiple regression models, principal component analysis (PCA), redundancy analysis (RDA), and self-organizing map (SOM) model. The results demonstrated an average net release of chemical oxygen demand (COD), ammonianitrogen (NH3-N), nitrate-nitrogen (NO3-N) and molybdate reactive phosphorus (MRP) to the overlying water column, indicating that the ICW sediment and substrates acted as new contaminant sources. According to statistical analysis, electrical conductivity (EC) and redox potential (RP) values affected COD treatment efficiency. Chloride (Cl) concentration and RP value had an impact on NH3-N treatment performance. NO3-N removal was influenced by dissolved oxygen (DO) concentration and RP value. MRP treatment efficiency was related to DO concentration and EC value. The SOM model was selected as prediction tool to provide numerical estimations for the performance of ICW mesocosms. The model was validated, indicating that NH3-N, NO3-N, MRP, and COD treatment efficiencies could be predicted by input variables which are quick and cost-effective to measure. The SOM model can be seen as an appropriate method for monitoring the performance of mature ICWs. The type of vegetation played a minor role in releasing nutrients and other contaminants. However, the mesocosm planted with Phragmites australis outperformed the one planted with Agrostis stolonifera. No water reached bottom outlet of the mesocosm suggesting that there was little potential risk to contaminate groundwater. The clay liner and the biogeochemical processes taking place within sediments proved to be effective in preventing surface water from infiltration. Although no reduction in the overall performance has been observed for the full-scale ICW sites 7 and/or 11, this laboratory-scale study provided valuable warning signs regarding the loss of contaminant sequestration which may contribute to decline in wetland treatment performance over time. The impacts of hydraulic loading rate (HLR) and seasonal temperature fluctuations on contaminant removal efficiencies of a new ICW system receiving domestic wastewater were also assessed. The system showed good overall treatment performance in terms of effluent quality and removal efficiency. The influence of ICW removal efficiencies of the hydraulic loading rate, which was based on overall water balance, was negligible due to large footprint and…

Subjects/Keywords: 333.91; nutrient; sediment; statistical models; hydraulic retention time; HRT

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APA (6^th Edition):

Dong, Y. (2013). Application of integrated constructed wetlands for contaminant treatment and diffusion. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/7750

Chicago Manual of Style (16^th Edition):

Dong, Yu. “Application of integrated constructed wetlands for contaminant treatment and diffusion.” 2013. Doctoral Dissertation, University of Edinburgh. Accessed January 26, 2021. http://hdl.handle.net/1842/7750.

MLA Handbook (7^th Edition):

Dong, Yu. “Application of integrated constructed wetlands for contaminant treatment and diffusion.” 2013. Web. 26 Jan 2021.

Vancouver:

Dong Y. Application of integrated constructed wetlands for contaminant treatment and diffusion. [Internet] [Doctoral dissertation]. University of Edinburgh; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1842/7750.

Council of Science Editors:

Dong Y. Application of integrated constructed wetlands for contaminant treatment and diffusion. [Doctoral Dissertation]. University of Edinburgh; 2013. Available from: http://hdl.handle.net/1842/7750

University of Edinburgh

9. Maxfield, Tom. The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture.

Degree: PhD, 2017, University of Edinburgh

URL: http://hdl.handle.net/1842/25419

► Maintaining an adequate level of soil organic matter and nutrients cycling is crucial to the success of any soil management in the humid tropics. Cover… (more)

▼ Maintaining an adequate level of soil organic matter and nutrients cycling is crucial to the success of any soil management in the humid tropics. Cover crops, compost, or manure additions have been used successfully to supply nutrients to crops but the benefits of such amendments are often short-lived in the tropics, since decomposition rates are high. This study focused on charcoal which, when utilised as a soil amendment is termed ‘biochar’. Throughout this thesis, the terms ‘charcoal’ and ‘biochar’ are used interchangeably depending on the context. Charcoal exhibits physiochemical properties potentially suitable for soil improvement as well as for the safe and long-term storage of carbon in the environment. As a way of investigating its recalcitrance as a carbon store, O:C ratios have been shown to reflect the extent of oxidation and therefore decomposition of charcoal. This study aimed to fill a gap in the research by describing the effects of biochar on the water retention capacity of soil under laboratory conditions. It also provides a detailed snapshot of the first ten years of recalcitrance under natural conditions, using X-Ray Photoelectron Spectroscopy (XPS) to determine elemental oxygen and carbon ratios of whole charcoal fragments and how these are affected by the surrounding environment over time. Mechanisms of oxidation are described, showing how both biotic and abiotic factors influence the degradation of charcoal in the soil. It also investigated how these properties affect the nutrient and water retention capability of charcoals of different ages in the laboratory. Results of charcoal/soil mixtures showed significant reduction in nitrate leachate losses with no reduction in performance over a ten year period of residing in the soil. It was also shown that charcoal addition to a sandy soil resulted in a significantly increased available water content. Both these results were argued to support the idea that charcoal is of potential beneficial amendment to sandy, degraded soils.

Subjects/Keywords: 631.4; biochar; nutrient retention; charcoal; stability; O:C ratios; Ghana

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APA (6^th Edition):

Maxfield, T. (2017). The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/25419

Chicago Manual of Style (16^th Edition):

Maxfield, Tom. “The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture.” 2017. Doctoral Dissertation, University of Edinburgh. Accessed January 26, 2021. http://hdl.handle.net/1842/25419.

MLA Handbook (7^th Edition):

Maxfield, Tom. “The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture.” 2017. Web. 26 Jan 2021.

Vancouver:

Maxfield T. The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture. [Internet] [Doctoral dissertation]. University of Edinburgh; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1842/25419.

Council of Science Editors:

Maxfield T. The short-term stability and function of charcoal in soil and its relevance to Ghanaian subsistence agriculture. [Doctoral Dissertation]. University of Edinburgh; 2017. Available from: http://hdl.handle.net/1842/25419

University of Waikato

10. Ginders, Melany Ann. The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River .

Degree: 2011, University of Waikato

URL: http://hdl.handle.net/10289/5333

► This thesis was a comparative study of a natural and a recently re-constructed (artificial) side-arm in the lower Waikato River. A twelve monthly temporal investigation… (more)

▼ This thesis was a comparative study of a natural and a recently re-constructed (artificial) side-arm in the lower Waikato River. A twelve monthly temporal investigation into (i) the physico-chemical variables, nutrient and suspended solid dynamics; and (ii) phytoplankton and zooplankton abundance and community composition was carried out in order to compare each side-arm with the river, and any patterns occurring within the side-arm longitudinally. The study was based on three observed phases of connectivity of the side-arms with the river flow: Phase 1 - side-arms connected with the river (late spring-summer); Phase 2 - side-arms disconnected from the river (autumn); Phase 3 - side-arms re-connected with the river (winter). Functional roles described for side-arms in the literature were used to assess whether the natural and artificial side-arms functioned as predicted for hydraulic retention zones during disconnection, a period of high water retention and water age. Both side-arms were influenced by seasonal variation during the late spring-summer and winter connection with the river. High nutrient and suspended solid concentrations were observed in the natural side-arm during disconnection in contrast to predictions, and it was speculated that pest fish bio-turbation was at least in part responsible for this. Zooplankton community composition was dominated by rotifers and changed as expected in the natural side-arm between connection and disconnection with a 20-fold increase in abundance during disconnection. A considerable increase in Copepoda abundance was also observed, which suggested a positive influence of side-arm disconnection on planktivorous fish communities. The artificial side-arm removed nutrients and suspended solids from the water column as expected during disconnection. Phytoplankton biomass showed some increase within the artificial side-arm as expected, with a longitudinal decrease within the side-arm, which was speculated to be caused by biotic control by zooplankton grazing. Differences between the artificial and natural side-arms were likely caused by physical differences in substrate, riparian vegetation and zooplankton accumulation of diapausing eggs caused by establishment age of the side-arms. The artificial side-arm functioned as predicted for hydraulic retention zones during disconnection, suggesting potential for side arm re-construction as a restoration method to increase lateral habitat and improve local habitat health in the lower Waikato River. Ongoing monitoring of the artificial side-arm would be beneficial to see whether increased establishment age would allow the artificial side-arm to develop functional roles indicative of a naturally occurring side-arm in the lower Waikato River. Advisors/Committee Members: Collier, Kevin J (advisor), Hamilton, David P (advisor).

Subjects/Keywords: Ecology; Large river ecology; Phytoplankton; Zooplankton; Waikato River; Nutrient dynamics; Hydraulic retention

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APA (6^th Edition):

Ginders, M. A. (2011). The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/5333

Chicago Manual of Style (16^th Edition):

Ginders, Melany Ann. “The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River .” 2011. Masters Thesis, University of Waikato. Accessed January 26, 2021. http://hdl.handle.net/10289/5333.

MLA Handbook (7^th Edition):

Ginders, Melany Ann. “The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River .” 2011. Web. 26 Jan 2021.

Vancouver:

Ginders MA. The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River . [Internet] [Masters thesis]. University of Waikato; 2011. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10289/5333.

Council of Science Editors:

Ginders MA. The influence of connectivity on the functional role of a natural and re-constructed side-arm in the lower Waikato River . [Masters Thesis]. University of Waikato; 2011. Available from: http://hdl.handle.net/10289/5333

University of Tasmania

11. Bich, NV. Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam.

Degree: 2019, University of Tasmania

URL: https://eprints.utas.edu.au/31430/1/Bich_whole_thesis.pdf

► In Vietnam, approximately 1.3 M ha of acacia and eucalypt plantations have been established in the past three decades to supply a growing local and… (more)

▼ In Vietnam, approximately 1.3 M ha of acacia and eucalypt plantations have been established in the past three decades to supply a growing local and international demand for pulp and sawlog. Wood production over successive rotations does not appear sustainable as yields are declining and soils, especially on steep sites, are being eroded and negatively impacted. There is concern that current practices, i.e. burning harvest residues and only applying a small dose of fertilisers at planting are in part responsible for this situation and need to be changed. This thesis examines if changes in the current practices i.e. the retention of harvest residues and increased P fertilisation will improve the soil properties and productivity of Eucalyptus hybrid (Eucalyptus urophylla × E. pellita) and Acacia mangium plantations planted on steep slopes in northern Vietnam. The first study investigated whether the decomposition of retained A. mangium harvest residues (branches, leaves and bark) could provide sufficient nutrients for the next rotation. The biomass and nutrient content of above-ground stand components of the previous 7-year-old Acacia mangium rotation were examined at harvest, and the rates of decomposition and nutrient release from the harvest residues determined. The decomposition constant k, half-life t0.5 and release of nutrients (N, P, K, Ca and Mg) were monitored by using the litterbag technique for a 1.5-year-period. At harvesting, the total above-ground stand biomass of the previous rotation was 60.8 t ha(^-1), comprising stemwood (42.7 t ha(^-1)), bark (8.9 t ha(^-1)), branches (6.6 t ha(^-1)) and leaves (2.5 t ha(^-1)). The retained bark on site made up one-third of the mass of all residues (harvest residues + litter + understorey vegetation) and conserved 6% Mg, 14% K, 18% P, 30% N and 41% Ca content for recycling. The decomposition rate of the leaves was the most rapid (k = 1.47 year(^-1); t0.5 = 0.47 year), then branches (k = 0.54 year(^-1); t0.5 = 1.29 year) and bark (k= 0.22 year(^-1); t0.5 = 3.09 year). During decomposition, the loss of nutrients from harvest residues was K ≈ Ca > N > P> Mg. Over 1.5 years of the study period, as much as 137.1 kg N ha(^-1), 4.7 kg P ha(^-1), 20.8 kg K ha(^-1), 94.5 kg Ca ha(^-1) and 2.2 kg Mg ha(^-1) were recycled. The N, Ca and K, though not P and Mg released from decomposing A. mangium harvest residues are potentially able to meet a significant part of the demand by trees growing in the next rotation. The second study examined whether the retention of residues, and application of phosphorus fertiliser at higher rates than the current practice, can increase rates of growth and vigour of trees, i.e. better tree form and lesser crown damage, of eucalypt and acacia plantations. A factorial combination of residue management (burning vs. retention) and phosphorus (P) fertiliser application at planting (15 vs. 100 kg ha(^-1)) treatments was applied at a steeply sloping site (slope rages from 8 – 40 ̊). Two adjacent…

Subjects/Keywords: Residue retention; burning; decomposition; nutrient cycling; sloping terrain; soil properties; tropical plantation; Vietnam

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APA (6^th Edition):

Bich, N. (2019). Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/31430/1/Bich_whole_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bich, NV. “Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam.” 2019. Thesis, University of Tasmania. Accessed January 26, 2021. https://eprints.utas.edu.au/31430/1/Bich_whole_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bich, NV. “Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam.” 2019. Web. 26 Jan 2021.

Vancouver:

Bich N. Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam. [Internet] [Thesis]. University of Tasmania; 2019. [cited 2021 Jan 26]. Available from: https://eprints.utas.edu.au/31430/1/Bich_whole_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bich N. Inter-rotational strategies for sustaining site fertility and productivity of acacia and eucalyptus plantations planted on steep slopes in northern Vietnam. [Thesis]. University of Tasmania; 2019. Available from: https://eprints.utas.edu.au/31430/1/Bich_whole_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

12. Groh, Tyler. Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis.

Degree: MS, 0190, 2014, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/49813

► Agricultural nutrient loss (N and P) from the Midwestern United States is an important issue, especially from tile drained land. There are a wide range… (more)

▼ Agricultural nutrient loss (N and P) from the Midwestern United States is an important issue, especially from tile drained land. There are a wide range of in-field and edge-of-field practices to reduce losses that have been studied and are currently recommended, such as cover crops, fertilizer management, drainage water management, wetlands, wood chip bioreactors, and saturated lateral buffers. In-field practices can lead to reduced crop yields and may cause problems with annual implementation, so edge-of-field methods are viewed as an alternative to avoid these problems. Constructed wetlands receiving tile drainage have the potential to remove and retain both N and P from agricultural runoff. This has been shown through many studies. However, little is known about how the N and P removal processes and efficiencies change as constructed wetlands age. In addition, there have been few measurements of greenhouse gas, GHG, emissions from agricultural constructed wetlands. This study evaluated N and P removal and greenhouse gas emissions in three 20 year old constructed wetlands that receive tile drainage from corn and soybean fields in southern Champaign County, Illinois. All three wetlands were equipped with data loggers and pressure transducers at their inlets and outlets to measure flow, using Agri Drain control structures. Water samples were collected to determine N and P concentrations and loads. Wells were also installed in and outside of the berms of wetlands A and B in order to determine the volume of seepage water, and the nitrate load lost through this pathway. Using the inlet, outlet, and seepage nutrient load data, nutrient budgets were constructed, and N and P removal rates were calculated. Greenhouse gas fluxes, including carbon dioxide, methane, and nitrous oxide, were measured from the inundated and terrestrial portions of the wetlands via floating and static chambers, respectively. These fluxes were measured throughout the year, and were linearly interpolated in order to construct a cumulative flux. The wetlands removed approximately 46% of the nitrate-N and 2% of the total P inlet load when they were first established. During two years of study (2012-2013) I determined that the wetlands removed on average 59% of the nitrate-N and 32% of the total P inputs. Hydraulic loading had a strong, positive relationship with the mass of N removed per hectare with a R2 value of 0.73. The predictability of N removal increased when the nitrate inlet flow weighted mean was also considered in a multiple linear regression. Together, the hydraulic loading and average nitrate concentration explained 85% of the variation in N removal. Total P wetland retention was more difficult to explain, and varied greatly between water years and wetlands, with removal ranging from -7 to 100%. Unlike N removal, P retention was not strongly related to hydraulic loading and inlet P flow weighted means. The dominant GHG emitted from the wetlands was carbon dioxide, which made up between 75 and 96% of the total GHG emissions. The nitrous… Advisors/Committee Members: David, Mark B. (advisor).

Subjects/Keywords: Constructed wetlands; Nutrient removal; Greenhouse gas emissions; Nitrate removal; Tile drainage; Phosphorus retention; Wetlands

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APA (6^th Edition):

Groh, T. (2014). Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49813

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Groh, Tyler. “Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis.” 2014. Thesis, University of Illinois – Urbana-Champaign. Accessed January 26, 2021. http://hdl.handle.net/2142/49813.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Groh, Tyler. “Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis.” 2014. Web. 26 Jan 2021.

Vancouver:

Groh T. Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2142/49813.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Groh T. Nutrient removal and greenhouse gas emissions from 20 year old constructed wetlands receiving tile drainage water: a biogeochemical analysis. [Thesis]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49813

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Arkansas

13. Grantz, Erin. Nitrogen Retention and Denitrification in Reservoirs.

Degree: MS, 2011, University of Arkansas

URL: https://scholarworks.uark.edu/etd/228

► Studies coupling direct measurements of micro-scale nitrogen (N) cycle processes with ecosystem-scale flux estimates are needed to determine N retention hotspots within river networks,… (more)

Subjects/Keywords: Earth sciences; Biological sciences; Denitrification; Lanscape ecology; Nitrogen retention; Nutrient cycling; Reservoir; Biogeochemistry

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APA (6^th Edition):

Grantz, E. (2011). Nitrogen Retention and Denitrification in Reservoirs. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/228

Chicago Manual of Style (16^th Edition):

Grantz, Erin. “Nitrogen Retention and Denitrification in Reservoirs.” 2011. Masters Thesis, University of Arkansas. Accessed January 26, 2021. https://scholarworks.uark.edu/etd/228.

MLA Handbook (7^th Edition):

Grantz, Erin. “Nitrogen Retention and Denitrification in Reservoirs.” 2011. Web. 26 Jan 2021.

Vancouver:

Grantz E. Nitrogen Retention and Denitrification in Reservoirs. [Internet] [Masters thesis]. University of Arkansas; 2011. [cited 2021 Jan 26]. Available from: https://scholarworks.uark.edu/etd/228.

Council of Science Editors:

Grantz E. Nitrogen Retention and Denitrification in Reservoirs. [Masters Thesis]. University of Arkansas; 2011. Available from: https://scholarworks.uark.edu/etd/228

Technical University of Lisbon

14. Lopes, Anabela Ferreira. Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga.

Degree: 2015, Technical University of Lisbon

URL: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/11445

►

Tese de Doutoramento em Ciências Veterinárias, especialidade de Segurança Alimentar

Nos tempos que correm estamos cada vez menos disponíveis para a preparação de uma refeição,… (more)

▼

Tese de Doutoramento em Ciências Veterinárias, especialidade de Segurança Alimentar

Nos tempos que correm estamos cada vez menos disponíveis para a preparação de uma refeição, não existindo, na maioria das vezes, a preocupação de como a processamos e as alterações ocorridas em termos de composição nutricional. Tal como é sabido desde há longa data, a carência de determinados nutrientes pode conduzir a graves problemas de saúde, sendo deste modo imprescíndivel o conhecimento dos fatores que contribuem para minimizar a perda de nutrientes dos alimentos. Considerando que a maioria dos alimentos de origem animal antes de serem consumidos são submetidos a um método de confeção, utilizando-se uma fonte de calor, considerou-se importante avaliar a forma como três métodos de confeção de uso vulgar a nível doméstico (forno micro-ondas, água fervente e grelhagem) poderiam influenciar a composição nutricional das carnes de vitela Barrosã e de novilho Mertolengo (Denominação de Origem Protegida). Assim, no presente estudo, verificou-se que a aplicação dos vários métodos de confeção estudados altera a composição nutricional da carne, não sendo possível identificar no global qual o método de confeção que minimiza as perdas de nutrientes. De acordo com os dados obtidos, verificou-se que em ambas as carnes, os nutrientes que apresentam retenções mais elevadas são as proteínas totais, os aminoácidos, os lípidos totais, os isómeros conjugados do ácido linoleico, o colesterol total, o ferro, o magnésio e o zinco. Em contrapartida, os nutrientes da carne que são mais afetados pela ação dos métodos de confeção são a humidade, os ácidos gordos polinsaturados, o potássio e o α-tocoferol. Por conseguinte, verificou-se que a retenção dos nutrientes da carne varia em função do método de confeção aplicado. Observou-se também um efeito significativo do músculo em alguns dos nutrientes determinados em ambas as carnes estudadas. Os métodos de confeção afetaram negativamente a qualidade nutricional dos lípidos, uma vez que em ambas as carnes se verificou um aumento do índice de aterogenicidade e uma diminuição dos índices hipocolesterolémico/hipercolesterolémico e ácidos gordos polinsaturados/ácidos gordos saturados, comparativamente ao teor obtido na carne crua.

ABSTRACT - The effect of different cooking methods on the nutritional value of veal - experimental study on Barrosã and Mertolenga-PDO - Nowadays we often feel short of time when it comes to the preparation of a meal, and most of the time give no consideration as how we process it and the modifications which occur in terms of nutritional composition. It has been known for a long time that the lack of certain nutrients can lead to serious health problems; therefore it is fundamental to acknowledge the factors that contribute to minimizing the loss of food nutrients. Whereas most food of animal origin is subjected to a cooking method using a heat source before consumption, it was considered important to assess how three common household cooking methods (microwave, boiling and…

Advisors/Committee Members: Prates, José António Mestre, Lemos, José Pedro da Costa Cardoso de.

Subjects/Keywords: carne de ruminantes; valor nutricional; métodos de confeção; retenção de nutrientes; meat from ruminants; nutritional value; cooking methods; nutrient retention

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APA (6^th Edition):

Lopes, A. F. (2015). Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga. (Thesis). Technical University of Lisbon. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/11445

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lopes, Anabela Ferreira. “Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga.” 2015. Thesis, Technical University of Lisbon. Accessed January 26, 2021. http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/11445.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lopes, Anabela Ferreira. “Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga.” 2015. Web. 26 Jan 2021.

Vancouver:

Lopes AF. Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga. [Internet] [Thesis]. Technical University of Lisbon; 2015. [cited 2021 Jan 26]. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/11445.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lopes AF. Efeito de diferentes métodos de confeção no valor nutricional da carne de bovino : estudo experimental nas carnes Barrosã e Mertolenga. [Thesis]. Technical University of Lisbon; 2015. Available from: http://www.rcaap.pt/detail.jsp?id=oai:www.repository.utl.pt:10400.5/11445

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universiteit Utrecht

15. Sollie, S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.

Degree: 2007, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/22654

► Littoral zones with emergent vegetation are very narrow or even lacking in Dutch shallow lakes due to a combination of changed water level regime and… (more)

▼ Littoral zones with emergent vegetation are very narrow or even lacking in Dutch shallow lakes due to a combination of changed water level regime and unfavorable shore morphometry. These zones are important as a habitat for plants and animals, increasing species diversity. It has also been demonstrated that littoral zones can act as a nutrient sink to improve water quality. Therefore, it is important to understand how these zones can be restored or created and if they can be effective in this sense. The results presented in this thesis give more insight in the functioning of littoral zones at different water level regimes and in the quantative aspects of several nutrient retention processes. Furthermore, the research revealed that it is possible for artificial littoral zones to become comparable to more mature zones in nutrient cycling and nutrient retention within 10-15 years. Two important factors were identified as crucial in determining nutrient cycling in the littoral zone. Reed vegetation strongly affects nutrient storage during the growing season and was shown to decrease nutrient concentrations in the soil. Furthermore, in vegetated sites nutrient accumulation in the soil was higher compared to sites devoid of reed. The second steering factor in a littoral zone is water level (regime). Processes like reed growth, organic matter accumulation and denitrification were influenced by water level. Reed biomass was stimulated at high spring water levels, more organic matter was accumulated under flooded conditions and denitrification rate was positively correlated to water level. In formerly saline lakes, like lakes in the IJsselmeer area and Lake Volkerak, reduced plant growth is likely to occur when salinity reaches high levels after drawdown. In that situation reed biomass will mainly grow in the deeper parts of the littoral zone. From these results it is concluded that relatively high water levels will increase nutrient retention processes in the littoral zone. At a more natural water level regime with a large amplitude, (temporarily) flooded conditions will prevail in a more extensive area. At local scale the results imply a significant nutrient retention in the vegetated part of the littoral zone. However, a modelling study pointed out that in a lake with high nutrient loading, a relatively large marsh surface area is necessary to reduce nutrient concentrations effectively at the whole-lake scale. In lakes where nutrient concentrations are reduced to around critical values or in lakes where concentrations are already low, littoral zones are able to make the difference between a turbid and a clear lake. From this study I can conclude that a more natural water level regime is favorable for the expansion of helophyte zones and that these zones play a role in improving water quality in lakes were nutrient concentrations are not excessively high. At the same time, expanding these zones will contribute to the ecological status of the lake and will help to comply to the requirements of the EU Water Framework…

Subjects/Keywords: Biologie; littoral zone; shallow lake; nutrient retention; water quality; Phragmites australis; water level management; nitrogen; phosphorus

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APA (6^th Edition):

Sollie, S. (2007). Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/22654

Chicago Manual of Style (16^th Edition):

Sollie, S. “Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.” 2007. Doctoral Dissertation, Universiteit Utrecht. Accessed January 26, 2021. http://dspace.library.uu.nl:8080/handle/1874/22654.

MLA Handbook (7^th Edition):

Sollie, S. “Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.” 2007. Web. 26 Jan 2021.

Vancouver:

Sollie S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2007. [cited 2021 Jan 26]. Available from: http://dspace.library.uu.nl:8080/handle/1874/22654.

Council of Science Editors:

Sollie S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. [Doctoral Dissertation]. Universiteit Utrecht; 2007. Available from: http://dspace.library.uu.nl:8080/handle/1874/22654

Ryerson University

16. Cheung, Ryan Chad Ian. Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds.

Degree: 2017, Ryerson University

URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A6940

► Stormwater ponds have been implemented in many municipalities to control urban runoff and retain pollutants, such as nutrients and suspended solids. Two stormwater ponds in… (more)

Subjects/Keywords: Reservoir sedimentation – Ontario – Toronto – Measurement.; Storm water retention basins – Ontario – Toronto.; Nutrient pollution of water – Ontario – Toronto – Measurement.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cheung, R. C. I. (2017). Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A6940

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cheung, Ryan Chad Ian. “Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds.” 2017. Thesis, Ryerson University. Accessed January 26, 2021. https://digital.library.ryerson.ca/islandora/object/RULA%3A6940.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cheung, Ryan Chad Ian. “Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds.” 2017. Web. 26 Jan 2021.

Vancouver:

Cheung RCI. Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds. [Internet] [Thesis]. Ryerson University; 2017. [cited 2021 Jan 26]. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A6940.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cheung RCI. Evaluation of nutrient retention and sediment deposition in two urban stormwater retention ponds. [Thesis]. Ryerson University; 2017. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A6940

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Rio Grande do Norte

17. Pinto, Leonardo Henrique Teixeira. Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants .

Degree: 2017, Universidade do Rio Grande do Norte

URL: http://repositorio.ufrn.br/handle/123456789/23964

► Biodiversity positively affects several ecosystem functions. Nevertheless, the mechanisms by which biodiversity affects ecosystems are still poorly understood and call for new experimental studies designed… (more)

▼ Biodiversity positively affects several ecosystem functions. Nevertheless, the mechanisms by which biodiversity affects ecosystems are still poorly understood and call for new experimental studies designed to identify its underlying components. Previous studies have suggested that more diverse plant communities can provide more ecosystem stability due to complementarity and redundancy effects. Plant species diversity can act on different levels of the ecosystem properties. A clear example is the effect of plant diversity on nutrient dynamics of terrestrial ecosystems. Plant diversity can alter rates of soil nutrient accumulation and nutrient loading in aquatic systems. However, human impacts on natural ecosystems are leading to habitat and biodiversity loss. Such losses will ultimately jeopardize ecosystem functions and its associated services that are vital for human well-being. Therefore, the development of adequate restoration projects is paramount to mitigate anthropogenic impacts, while contributing to the conservation of biodiversity. Restoration projects offer the possibility to develop a solid knowledge on the functioning of ecosystems facing disturbance. For achieving this knowledge, we need to conduct theory-based restoration experiments in order to assess the variability, predictability and reliability of functioning from restored ecosystems. In this context, this PhD thesis is based on three experiments testing how plant diversity and functional traits would influence the functioning of restored ecosystems. The objectives are to investigate (i) the plant species and traits that are most efficient for retaining nutrients in the soil, thus reducing nutrient leaching losses and its consequent impact on aquatic systems; (ii) the effects of plant species richness and phylogenetic diversity on restoration success (measured as biomass production and plant survival) in a recently restored riparian forest; and (iii) the influence of an invasive alien plant species on soil and soil water nutrients in communities with different levels of functional diversity. The experiments conducted during this thesis are in accordance with recent studies that investigate how different measures of biodiversity and sources of stress could affect ecosystem functioning. The main results of this thesis reveal that (i) only one species (Mimosa tenuiflora) could influence water cleaning and soil nutrient content. Additionally, plant traits related to shoot dry matter content (SDMC) and root water content (RWC) are more important for controlling individual functions related to water and nutrient retention in the soil, while only traits related to biomass production affected ecosystem multifunctionality; (ii) the use of phylogenetically distant species can increase restoration success by positively affecting plant biomass production; and (iii) plant functional diversity partially promotes water cleaning and soil fertility in restored systems, nevertheless did not prevent invasion. In turn, invasive species disrupts the influence of plant… Advisors/Committee Members: Ganade, Gislene Maria da Silva (advisor), 10250312883 (advisor).

Subjects/Keywords: Biodiversity and ecosystem functioning; Functional diversity; Invasive species; Nutrient retention; Phylogenetic diversity; Plant traits; Soil fertility; Tropical dry forests

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APA (6^th Edition):

Pinto, L. H. T. (2017). Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants . (Doctoral Dissertation). Universidade do Rio Grande do Norte. Retrieved from http://repositorio.ufrn.br/handle/123456789/23964

Chicago Manual of Style (16^th Edition):

Pinto, Leonardo Henrique Teixeira. “Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants .” 2017. Doctoral Dissertation, Universidade do Rio Grande do Norte. Accessed January 26, 2021. http://repositorio.ufrn.br/handle/123456789/23964.

MLA Handbook (7^th Edition):

Pinto, Leonardo Henrique Teixeira. “Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants .” 2017. Web. 26 Jan 2021.

Vancouver:

Pinto LHT. Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants . [Internet] [Doctoral dissertation]. Universidade do Rio Grande do Norte; 2017. [cited 2021 Jan 26]. Available from: http://repositorio.ufrn.br/handle/123456789/23964.

Council of Science Editors:

Pinto LHT. Restoration of plant diversity and ecosystem functioning: effects of species richness, phylogenetic distance, functional diversity and invasive plants . [Doctoral Dissertation]. Universidade do Rio Grande do Norte; 2017. Available from: http://repositorio.ufrn.br/handle/123456789/23964

Virginia Commonwealth University

18. Wood, Joseph. SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN.

Degree: MS, Biology, 2010, Virginia Commonwealth University

URL: https://doi.org/10.25772/2DHZ-6C10 ; https://scholarscompass.vcu.edu/etd/2085

► Nutrient retention is governed by the interplay between physical processes that control the throughput of water and materials (i.e., water residence time), and by biological… (more)

Subjects/Keywords: Nitrogen; Ecosystem Metabolism; Nutrient Retention; Biology; Life Sciences

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APA (6^th Edition):

Wood, J. (2010). SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/2DHZ-6C10 ; https://scholarscompass.vcu.edu/etd/2085

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wood, Joseph. “SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN.” 2010. Thesis, Virginia Commonwealth University. Accessed January 26, 2021. https://doi.org/10.25772/2DHZ-6C10 ; https://scholarscompass.vcu.edu/etd/2085.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wood, Joseph. “SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN.” 2010. Web. 26 Jan 2021.

Vancouver:

Wood J. SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN. [Internet] [Thesis]. Virginia Commonwealth University; 2010. [cited 2021 Jan 26]. Available from: https://doi.org/10.25772/2DHZ-6C10 ; https://scholarscompass.vcu.edu/etd/2085.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wood J. SEASONAL PATTERNS OF NUTRIENT RETENTION IN A RESTORED TIDAL FRESHWATER STREAM OF THE MID-ATLANTIC COASTAL PLAIN. [Thesis]. Virginia Commonwealth University; 2010. Available from: https://doi.org/10.25772/2DHZ-6C10 ; https://scholarscompass.vcu.edu/etd/2085

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Commonwealth University

19. Isenberg, William. Sources and Fates of Nutrients in the Tidal, Freshwater James River.

Degree: MS, Environmental Studies, 2012, Virginia Commonwealth University

URL: https://doi.org/10.25772/GJ69-5J45 ; https://scholarscompass.vcu.edu/etd/2686

► Tidal freshwater reaches of estuaries may play an important role in mitigating nutrient fluxes from watersheds to the coastal zone due to their location at… (more)

Subjects/Keywords: Nutrient retention; Mass Balance; Tidal Freshwater; James River; Nitrogen; Phosphorus; Point Source; Environmental Sciences; Physical Sciences and Mathematics

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APA (6^th Edition):

Isenberg, W. (2012). Sources and Fates of Nutrients in the Tidal, Freshwater James River. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/GJ69-5J45 ; https://scholarscompass.vcu.edu/etd/2686

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Isenberg, William. “Sources and Fates of Nutrients in the Tidal, Freshwater James River.” 2012. Thesis, Virginia Commonwealth University. Accessed January 26, 2021. https://doi.org/10.25772/GJ69-5J45 ; https://scholarscompass.vcu.edu/etd/2686.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Isenberg, William. “Sources and Fates of Nutrients in the Tidal, Freshwater James River.” 2012. Web. 26 Jan 2021.

Vancouver:

Isenberg W. Sources and Fates of Nutrients in the Tidal, Freshwater James River. [Internet] [Thesis]. Virginia Commonwealth University; 2012. [cited 2021 Jan 26]. Available from: https://doi.org/10.25772/GJ69-5J45 ; https://scholarscompass.vcu.edu/etd/2686.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Isenberg W. Sources and Fates of Nutrients in the Tidal, Freshwater James River. [Thesis]. Virginia Commonwealth University; 2012. Available from: https://doi.org/10.25772/GJ69-5J45 ; https://scholarscompass.vcu.edu/etd/2686

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Washington

20. Gao, Si. Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA.

Degree: 2016, University of Washington

URL: http://hdl.handle.net/1773/36699

► Biochar additions to agricultural soil have been shown to result in many benefits; however, most studies have been conducted in greenhouse or laboratory trials with… (more)

Subjects/Keywords: Biochar; Crop nutrients; Field trial; Nutrient retention; Organic farms; Soil fertility; Environmental science; Agriculture; Soil sciences; forestry

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APA (6^th Edition):

Gao, S. (2016). Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA. (Thesis). University of Washington. Retrieved from http://hdl.handle.net/1773/36699

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gao, Si. “Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA.” 2016. Thesis, University of Washington. Accessed January 26, 2021. http://hdl.handle.net/1773/36699.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gao, Si. “Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA.” 2016. Web. 26 Jan 2021.

Vancouver:

Gao S. Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA. [Internet] [Thesis]. University of Washington; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1773/36699.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gao S. Locally produced wood biochar increases nutrient retention in agricultural soils of the San Juan Islands, WA, USA. [Thesis]. University of Washington; 2016. Available from: http://hdl.handle.net/1773/36699

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Cláudia da Costa Lopes. Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial.

Degree: 2010, Universidade Federal Rural de Pernambuco

URL: http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1196

►

Foram realizados dois estudos com o objetivo de avaliar o efeito da utilização de níveis crescentes de levedura de cana-de-açúcar (Saccharomyces cerevisiae) na dieta de… (more)

▼

Foram realizados dois estudos com o objetivo de avaliar o efeito da utilização de níveis crescentes de levedura de cana-de-açúcar (Saccharomyces cerevisiae) na dieta de frangos de corte na fase pré-inicial, de um a oito dias de idade. Um total de 750 frangos de corte machos da linhagem Cobb 500 foram utilizados. Os delineamentos experimentais foram inteiramente casualizado, com 5 tratamentos constituídos de uma dieta referência sem inclusão da levedura e quatro dietas teste com a inclusão de 1,25; 2,5; 3,75 e 5,0% de levedura. No primeiro estudo 300 pintos com um dia de idade foram alojados em gaiolas de metabolismo e distribuídos em seis repetições de 10 aves cada. Nesta pesquisa avaliou-se: a digestibilidade das rações através da determinação da energia metabolizável aparente e aparente corrigida para o balanço de nitrogênio e dos coeficientes de metabolizabilidade da matéria seca, proteína bruta e energia bruta; o desempenho zootécnico por meio do peso vivo, ganho de peso, consumo de ração e conversão alimentar; a retenção corporal de umidade, proteína, gordura e cinzas; e o desenvolvimento da mucosa intestinal mensurando-se a altura dos vilos, profundidade das criptas e relação vilo:cripta do duodeno, jejuno e íleo. Não houve efeito da levedura sobre as variáveis de desempenho. A energia metabolizável aparente, a aparente corrigida e os coeficientes de metabolizabilidade da energia bruta reduziram com a inclusão da levedura. A retenção corporal de proteína comportou-se de forma quadrática e a gordura de forma linear crescente. No jejuno houve aumento linear na altura dos vilos e relação vilo:cripta, entretanto no íleo a profundidade de criptas respondeu quadraticamente. No segundo estudo utilizaram-se 450 pintos no período de um a oito dias de idade alojados em boxes com cama reutilizada não tratada, distribuídos em seis repetições de 15 aves por unidade experimental. Foram avaliadas as variáveis de desempenho zootécnico: peso vivo, ganho de peso, consumo de ração e conversão alimentar; de composição corporal: umidade, proteína bruta, gordura e cinzas; e de morfologia intestinal: altura dos vilos, profundidade das criptas e relação vilo:cripta dos segmentos do intestino delgado. A inclusão de levedura proporcionou aumento no consumo de ração e conversão alimentar, melhora na absorção de minerais, na altura dos vilos e profundidade das criptas do jejuno e na profundidade das criptas do ííleo. O nível de 2% pode ser recomendado para melhor desenvolvimento intestinal e absorção de minerais.

Two studies were conducted to evaluate the effect of increasing levels of sugar cane yeast (Saccharomyces cerevisiae) in diets of post hatching broilers, from 1 to 8 days. A total of 750 male broiler chickens of Cobb 500 were utilized. A completely randomized experimental design, with five treatments consisting of a reference diet without addition of yeast and four test diets with the inclusion of 1.25, 2.5, 3.75 and 5.0% yeast. In the first study with 300 chicks a day old were housed in metabolism cages located in six…

Advisors/Committee Members: Mônica Calixto Ribeiro de Holanda, Valdemiro Amaro da Silva Júnior, Maria do Carmo Mohaupt Marques Ludke, Carlos Bôa-Viagem Rabello.

Subjects/Keywords: Levedura de cana-de-açúcar; Pintos de corte; Morfologia intestinal; Desempenho; Composição corporal; Frango de corte; ZOOTECNIA; Nutritional evaluation; Broiler; Intestinal villi; Nutrient retention; Saccharomyces cerevisiae

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APA (6^th Edition):

Lopes, C. d. C. (2010). Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial. (Thesis). Universidade Federal Rural de Pernambuco. Retrieved from http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lopes, Cláudia da Costa. “Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial.” 2010. Thesis, Universidade Federal Rural de Pernambuco. Accessed January 26, 2021. http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lopes, Cláudia da Costa. “Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial.” 2010. Web. 26 Jan 2021.

Vancouver:

Lopes CdC. Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial. [Internet] [Thesis]. Universidade Federal Rural de Pernambuco; 2010. [cited 2021 Jan 26]. Available from: http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1196.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lopes CdC. Uso da levedura de cana-de-açúcar em rações de frangos de corte na fase pré-inicial. [Thesis]. Universidade Federal Rural de Pernambuco; 2010. Available from: http://200.17.137.108/tde_busca/arquivo.php?codArquivo=1196

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Uppsala University

22. Sund, Johan. Styrning av biologisk kväverening anpassat efter tidsvarierande elpris.

Degree: 2019, Uppsala University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388459

► The electricity demand of a waste water treatment plants follows the diurnal pattern of society, and this generally leads to higher demand when the… (more)

Subjects/Keywords: biological nutrient removal; optimization; aeration; retention basin; equalization; demand response; biologisk kväverening; optimering; luftning; magasin; utjämning; efterfrågerespons; Engineering and Technology; Teknik och teknologier

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APA (6^th Edition):

Sund, J. (2019). Styrning av biologisk kväverening anpassat efter tidsvarierande elpris. (Thesis). Uppsala University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388459

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sund, Johan. “Styrning av biologisk kväverening anpassat efter tidsvarierande elpris.” 2019. Thesis, Uppsala University. Accessed January 26, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388459.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sund, Johan. “Styrning av biologisk kväverening anpassat efter tidsvarierande elpris.” 2019. Web. 26 Jan 2021.

Vancouver:

Sund J. Styrning av biologisk kväverening anpassat efter tidsvarierande elpris. [Internet] [Thesis]. Uppsala University; 2019. [cited 2021 Jan 26]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388459.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sund J. Styrning av biologisk kväverening anpassat efter tidsvarierande elpris. [Thesis]. Uppsala University; 2019. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388459

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

23. Berry, Pamela Lauretta Jean 1987-. An economic assessment of on-farm surface water retention systems.

Degree: 2016, University of Saskatchewan

URL: http://hdl.handle.net/10388/7646

► Regions dependent on agricultural production are concerned about the uncertainty associated with climate change. Extreme drought and flooding events are predicted to occur with greater… (more)

▼ Regions dependent on agricultural production are concerned about the uncertainty associated with climate change. Extreme drought and flooding events are predicted to occur with greater frequency, requiring mitigation strategies to reduce the associated negative impacts. Retention pond installation schemes designed to capture surface water may be a viable option to reduce water stress during drought periods by supporting irrigation. The retention systems would serve to capture excess spring runoff and extreme rainfall events, reducing flood potential downstream. Additionally, retention ponds may be used for biomass production and nutrient retention. The purpose of this research was to investigate the economic viability of adopting on-farm surface water retention systems as a strategic water management strategy. A retention pond was analysed using a dynamic simulation model to predict its storage capacity, installation and upkeep cost, and economic advantages. The average impact of irrigation application under present day conditions was an increase in crop revenue of 11.38/hectare. However, due to the cost of irrigation and reservoir installation this on average leaves the farmer to pay 148.50/hectare each year. Replacing existing low value crops within the study area with high value potato crops also resulted in a negative net revenue. Irrigated crops under future climate scenarios also experienced a net decrease in revenue due to the associated irrigation and reservoir infrastructure costs. However, gross crop revenue increases were more consistent throughout the future study time periods and required less irrigation water, making irrigation application more beneficial in the future. Farmers who harvest cattails from retention systems for biomass and available carbon offset credits can gain 642.70/hectare of harvestable cattail/year. Cattail harvest also removes phosphorus and nitrogen, providing a monetized impact of 7,014/hectare of harvestable cattail/year. The removal of phosphorus, nitrogen, carbon, and avoided flooding damages of the retention basin itself provide an additional 17,850 to 18,470/hectare of retention system/year depending on the valuations of avoided flooding damages. The recommended use of retention systems is for avoiding flood damages, nutrient retention, and biomass production. This is due to the economic gains these three functions of retention systems provide. The revenue gained from these functions can support farmers wanting to invest in irrigation while providing economic and environmental benefits to the region. Advisors/Committee Members: Lindenschmidt, Karl-Erich, Belcher, Ken, Grosshans, Richard, Benoy, Glenn, McDougal, Rhonda.

Subjects/Keywords: Multi-purpose surface water retention systems; Water management; Nutrient retention; Biomass production; Irrigation; Climate change

…mitigation, nutrient retention, and biomass production bolster the benefits of retention systems… …nutrient retention, and biomass production. The last objective is to explore the economic… …Surface water retention systems have shown success in reducing nutrient and sediment loading in… …literature on retention systems in America and Europe shown to effectively reduce nutrient loading… …lignite) 15.31 13 Water retention systems are ideal sites for nutrient removal as they…

11 more images…

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APA (6^th Edition):

Berry, P. L. J. 1. (2016). An economic assessment of on-farm surface water retention systems. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/7646

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Berry, Pamela Lauretta Jean 1987-. “An economic assessment of on-farm surface water retention systems.” 2016. Thesis, University of Saskatchewan. Accessed January 26, 2021. http://hdl.handle.net/10388/7646.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Berry, Pamela Lauretta Jean 1987-. “An economic assessment of on-farm surface water retention systems.” 2016. Web. 26 Jan 2021.

Vancouver:

Berry PLJ1. An economic assessment of on-farm surface water retention systems. [Internet] [Thesis]. University of Saskatchewan; 2016. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10388/7646.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Berry PLJ1. An economic assessment of on-farm surface water retention systems. [Thesis]. University of Saskatchewan; 2016. Available from: http://hdl.handle.net/10388/7646

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Vienna

24. Fuchsberger, Jennifer. Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6.

Degree: 2009, University of Vienna

URL: http://othes.univie.ac.at/4158/

►

Im Wienfluss, einem Sandstein-Gewässer mit Flussordnungszahl 5, wurden die Anbindung der hyporheischen Zone und deren Bedeutung für die Nährstoffretention untersucht. Dazu wurden von Juli 2005… (more)

▼

Im Wienfluss, einem Sandstein-Gewässer mit Flussordnungszahl 5, wurden die Anbindung der hyporheischen Zone und deren Bedeutung für die Nährstoffretention untersucht. Dazu wurden von Juli 2005 bis Oktober 2005 fünf Kurzzeit-Einspeisungen mit Bromid als konservativem Tracer und den Nährstoffen Nitrat, Phosphat und Ammonium durchgeführt. An einer Stelle im Wienfluss-Becken 6, an der zuvor ein Eindringen von Bachwasser ins Sediment festgestellt werden konnte, wurden etwa 20 Mini-Piezometer (PZM) in Tiefen von 8 – 40 cm installiert. Während der Plateau-Konzentrationen der Einspeisung wurden aus diesen PZM Wasserproben entnommen und auf den Gehalt der eingespeisten Stoffe analysiert. Durch den konservativen Tracer Bromid konnten Verdünnungseffekte durch das Grundwasser identifiziert und die Abnahme-Raten der Nährstoffe in die Tiefe berechnet werden. Diese zeigten eine schnelle Aufnahme von Phosphat, gefolgt von Ammonium. Nitrat verhielt sich sehr konservativ und wurde kaum aufgenommen. Ein Hochwasser im August beeinflusste den vertikalen Wasseraustausch und die Nährstoffretention maßgeblich. Nach dem Hochwasser wurden eine reduzierte hydrologische Anbindung der Hyporheals und gesteigerte Nährstoffretentionsraten gemessen. Der hyporheische Austausch und somit die Nährstoffretention im Hyporheal wird im Wienfluss hauptsächlich durch Änderungen im Wasserstand des Oberflächen- und Grundwassers kontrolliert. Die Infiltration von Oberflächenwasser ins Grundwasser war im Untersuchungsgebiet auf einige wenige Stellen begrenzt. Durch die Versuche wurde zwar prinzipiell ein Potential der Sedimente zum Rückhalt von Nährstoffen festgestellt, ob dieses für die Gesamt-Retention jedoch bedeutend ist, wird aufgrund der geringen hydraulischen Anbindung bezweifelt.

In this study the hydraulic connection between the surface water and the interstitial water as well as the hyporheic potential for nutrient retention were studied in the Wienfluss, a 5th order sandstone stream near the city of Vienna. For this purpose five short term nutrient additions (nitrate, phosphat, ammonia) using bromide as a conservative tracer were conducted from July to October 2005. Additional measurements of water exchange parameters (VHG, hydraulic conductivity, oxygen and conductivity) identified a downwelling site in the, so called, retention-basin 6. There all nutrient retention experiments were carried out. Nutrient retention coefficients, corrected for dillution, showed the highest hyporheic uptake efficiency for phosphat, followed by ammonia. Nitrate uptake was lowest and very unstable. A flood in mid August caused serious alterations in vertical water exchange and nutrient retention. The higher water level lowered the connectivity between the surface and the hyporheic zone and increased the nutrient retention efficiency. This reveals a strong correlation between nutrient uptake and water level. The sediments at downwelling zones have, compared to literature, a mean potential for nutrient retention. But because of the heavily clogged sediments in…

Subjects/Keywords: 30.00 Naturwissenschaften allgemein: Allgemeines; 30.00 Naturwissenschaften allgemein: Allgemeines; Hyporheal / Nährstoffretention / hyporeischer Wasseraustausch / Nährstoff-Einspeisungen / Sediment / Wienfluss; hyporheic zone / nutrient retention / hyporheic exchange / nutrient addition experiments / Wienfluss / sediments

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APA (6^th Edition):

Fuchsberger, J. (2009). Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/4158/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fuchsberger, Jennifer. “Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6.” 2009. Thesis, University of Vienna. Accessed January 26, 2021. http://othes.univie.ac.at/4158/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fuchsberger, Jennifer. “Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6.” 2009. Web. 26 Jan 2021.

Vancouver:

Fuchsberger J. Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6. [Internet] [Thesis]. University of Vienna; 2009. [cited 2021 Jan 26]. Available from: http://othes.univie.ac.at/4158/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fuchsberger J. Hyporheischer Wasser- und Nährstoffaustausch im Wienfluss-Retentionsbecken 6. [Thesis]. University of Vienna; 2009. Available from: http://othes.univie.ac.at/4158/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Maryland

25. Strano, Stephen. Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention.

Degree: Biological Resources Engineering, 2009, University of Maryland

URL: http://hdl.handle.net/1903/9627

► Hydraulic residence time (HRT) is a critical factor that can be integrated into wetland restoration designs to promote nutrient retention, but HRT in the context… (more)

Subjects/Keywords: Environmental Sciences; Engineering, Environmental; hydraulic residence time; nutrient retention; nutrients; storm runoff; wetland restoration design; wetlands

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APA (6^th Edition):

Strano, S. (2009). Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention. (Thesis). University of Maryland. Retrieved from http://hdl.handle.net/1903/9627

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Strano, Stephen. “Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention.” 2009. Thesis, University of Maryland. Accessed January 26, 2021. http://hdl.handle.net/1903/9627.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Strano, Stephen. “Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention.” 2009. Web. 26 Jan 2021.

Vancouver:

Strano S. Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention. [Internet] [Thesis]. University of Maryland; 2009. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1903/9627.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Strano S. Evaluation of the effects of wetland restoration design on hydraulic residence time and nutrient retention. [Thesis]. University of Maryland; 2009. Available from: http://hdl.handle.net/1903/9627

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. Sekar, Samantha. The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India.

Degree: MS, Environment and Natural Resources, 2012, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1343750717

► Both biochar and anaerobic digester effluent, which are byproducts of gasification and anaerobic digestion, respectively, have been proposed as means of improving soil quality, plant… (more)

▼ Both biochar and anaerobic digester effluent, which are byproducts of gasification and anaerobic digestion, respectively, have been proposed as means of improving soil quality, plant productivity, and reducing C emissions. These soil amendments may be especially beneficial in rural regions of developing countries where biomass feedstock is locally available and energy poverty is pervasive. Thus, a field study was conducted in a remote village in Karnataka, India to test the ability biochar and anaerobic digester effluent to enhance soil quality and crop growth on a loamy sand soil. The two-year study included 4 treatments in the first year: control (Ct), biochar (B), effluent (E), and biochar+effluent (B+E) and two additional treatments in the second year: conventional fertilizer (C+F) and biochar+conventional fertilizer (B+F). The biochar was applied at a rate of 30Mg/ha and effluent at a rate of 56.25m3/ha. In the second year, 50kg/ha of NPK fertilizer was added to each conventional fertilizer plot. One year after application, soil ρb significantly decreased by 7.3% and fT increased by 8.5% with biochar addition. Biochar also increased soil pH but had no impact on EC. The effluent did not have a significant effect on any soil properties tested, but after the first cropping season, biomass yield of radish (Raphanus sativus L.) from treatment E was approximately 11 times greater than Ct. Treatment B+E produced an even greater yield, suggesting there was an interactive effect among soil amendments. However, in year 2, there were no significant differences in crop growth or soil N among treatments Ct, B, E, and B+E, nor were there differences in crop growth between C+F and B+F. The results indicate that anaerobic digester effluent has a positive effect on crop growth but that the biochar tested does not improve soil nutrient or water retention, suggesting additional research is required to determine the most effective forms of biochar for improving soil quality and increasing agricultural yields. Advisors/Committee Members: Lal, Dr. Rattan (Advisor).

Subjects/Keywords: Environmental Science; Soil Sciences; biochar; anaerobic digester effluent; biogas slurry; soil quality; karnataka; radish; nutrient retention

…nutrient retention and provide a habitat for microorganisms in the soil, especially in degraded… …nutrient retention in soil 1.7 References Amon, B., G. Moitzi, M. Schimpl, V. Kryvoruchko, and C… …56 Crop yield �� .. 56 Leaf nutrient analysis… …referred to as biodigester effluent or biogas slurry, on soil nutrient addition and soil quality… …Biochar will reduce soil bulk density, increase water retention, and reduce soil compaction, b…

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APA (6^th Edition):

Sekar, S. (2012). The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1343750717

Chicago Manual of Style (16^th Edition):

Sekar, Samantha. “The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India.” 2012. Masters Thesis, The Ohio State University. Accessed January 26, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343750717.

MLA Handbook (7^th Edition):

Sekar, Samantha. “The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India.” 2012. Web. 26 Jan 2021.

Vancouver:

Sekar S. The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India. [Internet] [Masters thesis]. The Ohio State University; 2012. [cited 2021 Jan 26]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1343750717.

Council of Science Editors:

Sekar S. The Effects of Biochar and Anaerobic Digester Effluent on Soil Quality and Crop Growth in Karnataka, India. [Masters Thesis]. The Ohio State University; 2012. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1343750717

The Ohio State University

27. Yang, Hanbae. Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management.

Degree: PhD, Environmental Science, 2010, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1268061826

► Rain gardens are bioretention systems that have the potential to reduce peak runoff flow and improve water quality in a natural and aesthetically pleasing manner.… (more)

▼ Rain gardens are bioretention systems that have the potential to reduce peak runoff flow and improve water quality in a natural and aesthetically pleasing manner. In spite of their popularity, results from column and field-scale studies show that level of pollutant removal in rain gardens varies and is not always positive. To date, research has often focused on a limited number of runoff pollutants. This study was conducted to develop and evaluate a new rain garden design for flow management and pollutant removal from stormwater runoff. Both column and field-scale biphasic rain gardens were designed and constructed to increase retention time and maximize removal efficiency of multiple runoff pollutants by creating a sequence of anaerobic to aerobic conditions. To evaluate hydraulic performance and pollutant removal capacity of the biphasic rain gardens, studies were conducted under actual and simulated runoff conditions with spiked concentrations of nutrients (nitrate-N and phosphate-P), and herbicides (i.e. atrazine (6-chloro-N-ethyl-N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine), glyphosate (N-(phosphonomethyl)glycine), dicamba (3,6-dichloro-2-methoxybenzoic acid), and 2,4-D (2,4-dichlorophenoxyacetic acid)). Both column and field-scale studies showed that the biphasic rain gardens have the potential to be an effective best management practice for reducing stormwater flow and pollutant loads. Peak flow and runoff volume were effectively reduced five-fold in the biphasic rain gardens for actual and simulated runoff events by holding runoff in the rain gardens (mainly in the anaerobic zone) until a subsequent runoff event. The field-scale biphasic rain gardens were highly effective in removing nitrate-N (~91%), phosphate-P (~99%), atrazine (~90%), dicamba (~92%), glyphosate (~99%), and 2,4-D (~90%) under high levels of pollution loading conditions simulated in both agricultural and urban runoff events. The column studies demonstrated that the biphasic rain garden, compared to the monophasic (conventional) rain garden, was better able to reduce peak flow, runoff volume, and pollutant loads by employing the sequence of anaerobic to aerobic (biphasic) conditions. In addition, higher organic matter content in soil media increased removal efficiency of nitrate-N through denitrification in the anaerobic zone. Overall, this study showed that increased retention time of runoff pollutants, as determined by design configuration and rainfall size, intensity, and interval, significantly increased overall nutrient and herbicide removal in the biphasic rain gardens. Demonstrating more efficient hydraulic and pollutant removal capacity by the biphasic rain gardens, compared to the conventional monophasic rain gardens, is expected to stimulate the implementation of rain gardens as an effective stormwater best management practice. Advisors/Committee Members: Dick, Warren A. (Advisor), Grewal, Parwinder S. (Advisor).

Subjects/Keywords: Environmental Science; best management practice; bioretention; biphasic rain garden; herbicides; hydraulic performance; nutrient; retention time; runoff pollutants; stormwater runoff

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APA (6^th Edition):

Yang, H. (2010). Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1268061826

Chicago Manual of Style (16^th Edition):

Yang, Hanbae. “Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management.” 2010. Doctoral Dissertation, The Ohio State University. Accessed January 26, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268061826.

MLA Handbook (7^th Edition):

Yang, Hanbae. “Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management.” 2010. Web. 26 Jan 2021.

Vancouver:

Yang H. Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management. [Internet] [Doctoral dissertation]. The Ohio State University; 2010. [cited 2021 Jan 26]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1268061826.

Council of Science Editors:

Yang H. Development and Evaluation of a Biphasic Rain Garden for Stormwater Runoff Management. [Doctoral Dissertation]. The Ohio State University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1268061826

28. Sollie, S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.

Degree: 2007, University Utrecht

URL: https://dspace.library.uu.nl/handle/1874/22654 ; URN:NBN:NL:UI:10-1874-22654 ; 1874/22654 ; urn:isbn:97839346082 ; URN:NBN:NL:UI:10-1874-22654 ; https://dspace.library.uu.nl/handle/1874/22654

► Littoral zones with emergent vegetation are very narrow or even lacking in Dutch shallow lakes due to a combination of changed water level regime and… (more)

▼ Littoral zones with emergent vegetation are very narrow or even lacking in Dutch shallow lakes due to a combination of changed water level regime and unfavorable shore morphometry. These zones are important as a habitat for plants and animals, increasing species diversity. It has also been demonstrated that littoral zones can act as a nutrient sink to improve water quality. Therefore, it is important to understand how these zones can be restored or created and if they can be effective in this sense. The results presented in this thesis give more insight in the functioning of littoral zones at different water level regimes and in the quantative aspects of several nutrient retention processes. Furthermore, the research revealed that it is possible for artificial littoral zones to become comparable to more mature zones in nutrient cycling and nutrient retention within 10-15 years. Two important factors were identified as crucial in determining nutrient cycling in the littoral zone. Reed vegetation strongly affects nutrient storage during the growing season and was shown to decrease nutrient concentrations in the soil. Furthermore, in vegetated sites nutrient accumulation in the soil was higher compared to sites devoid of reed. The second steering factor in a littoral zone is water level (regime). Processes like reed growth, organic matter accumulation and denitrification were influenced by water level. Reed biomass was stimulated at high spring water levels, more organic matter was accumulated under flooded conditions and denitrification rate was positively correlated to water level. In formerly saline lakes, like lakes in the IJsselmeer area and Lake Volkerak, reduced plant growth is likely to occur when salinity reaches high levels after drawdown. In that situation reed biomass will mainly grow in the deeper parts of the littoral zone. From these results it is concluded that relatively high water levels will increase nutrient retention processes in the littoral zone. At a more natural water level regime with a large amplitude, (temporarily) flooded conditions will prevail in a more extensive area. At local scale the results imply a significant nutrient retention in the vegetated part of the littoral zone. However, a modelling study pointed out that in a lake with high nutrient loading, a relatively large marsh surface area is necessary to reduce nutrient concentrations effectively at the whole-lake scale. In lakes where nutrient concentrations are reduced to around critical values or in lakes where concentrations are already low, littoral zones are able to make the difference between a turbid and a clear lake. From this study I can conclude that a more natural water level regime is favorable for the expansion of helophyte zones and that these zones play a role in improving water quality in lakes were nutrient concentrations are not excessively high. At the same time, expanding these zones will contribute to the ecological status of the lake and will help to comply to the requirements of the EU Water Framework…

Subjects/Keywords: littoral zone; shallow lake; nutrient retention; water quality; Phragmites australis; water level management; nitrogen; phosphorus

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APA (6^th Edition):

Sollie, S. (2007). Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. (Doctoral Dissertation). University Utrecht. Retrieved from https://dspace.library.uu.nl/handle/1874/22654 ; URN:NBN:NL:UI:10-1874-22654 ; 1874/22654 ; urn:isbn:97839346082 ; URN:NBN:NL:UI:10-1874-22654 ; https://dspace.library.uu.nl/handle/1874/22654

Chicago Manual of Style (16^th Edition):

Sollie, S. “Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.” 2007. Doctoral Dissertation, University Utrecht. Accessed January 26, 2021. https://dspace.library.uu.nl/handle/1874/22654 ; URN:NBN:NL:UI:10-1874-22654 ; 1874/22654 ; urn:isbn:97839346082 ; URN:NBN:NL:UI:10-1874-22654 ; https://dspace.library.uu.nl/handle/1874/22654.

MLA Handbook (7^th Edition):

Sollie, S. “Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime.” 2007. Web. 26 Jan 2021.

Vancouver:

Sollie S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. [Internet] [Doctoral dissertation]. University Utrecht; 2007. [cited 2021 Jan 26]. Available from: https://dspace.library.uu.nl/handle/1874/22654 ; URN:NBN:NL:UI:10-1874-22654 ; 1874/22654 ; urn:isbn:97839346082 ; URN:NBN:NL:UI:10-1874-22654 ; https://dspace.library.uu.nl/handle/1874/22654.

Council of Science Editors:

Sollie S. Littoral zones in shallow lakes. Contribution to water quality in relation to water level regime. [Doctoral Dissertation]. University Utrecht; 2007. Available from: https://dspace.library.uu.nl/handle/1874/22654 ; URN:NBN:NL:UI:10-1874-22654 ; 1874/22654 ; urn:isbn:97839346082 ; URN:NBN:NL:UI:10-1874-22654 ; https://dspace.library.uu.nl/handle/1874/22654

29. Troxel, Cameron Francis. Life cycle analysis of sediment control devices.

Degree: MS, Civil and Environmental Engineering, 2013, Georgia Tech

URL: http://hdl.handle.net/1853/49105

► Sediment control devices (SCDs) are critical to reducing the contamination of waterways from adjacent construction sites. Perimeter sediment controls retard the flow of surface runoff… (more)

Subjects/Keywords: Sediment control devices; SCD; Life cycle analysis; LCA; Valuation; Nutrient retention; Metal retention; Solids removal; TSS; Turbidity; Sediment control; Product life cycle; Environmental impact analysis

…100 Figure 4-36: Nutrient retention of compost (upper), mulch (middle)… …retention of type A silt fence........................................... 75 Figure 4-8: Recorded… …tank weights and retention of high-flow type C silt fence with failure from undercutting at… …76 Figure 4-9: Recorded tank weights and retention of high-flow type C silt fence… …76 Figure 4-10: Recorded tank weights and retention of 12-inch compost sock with…

11 more images…

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APA (6^th Edition):

Troxel, C. F. (2013). Life cycle analysis of sediment control devices. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/49105

Chicago Manual of Style (16^th Edition):

Troxel, Cameron Francis. “Life cycle analysis of sediment control devices.” 2013. Masters Thesis, Georgia Tech. Accessed January 26, 2021. http://hdl.handle.net/1853/49105.

MLA Handbook (7^th Edition):

Troxel, Cameron Francis. “Life cycle analysis of sediment control devices.” 2013. Web. 26 Jan 2021.

Vancouver:

Troxel CF. Life cycle analysis of sediment control devices. [Internet] [Masters thesis]. Georgia Tech; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1853/49105.

Council of Science Editors:

Troxel CF. Life cycle analysis of sediment control devices. [Masters Thesis]. Georgia Tech; 2013. Available from: http://hdl.handle.net/1853/49105

University of Adelaide

30. Bjornsson, Kjartan Tumi. Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management.

Degree: 2008, University of Adelaide

URL: http://hdl.handle.net/2440/47936

► Most of the lower River Murray and its floodplain wetlands are impacted upon by degradation caused by river regulation. Increasingly the restoration of these ecosystems… (more)

▼ Most of the lower River Murray and its floodplain wetlands are impacted upon by degradation caused by river regulation. Increasingly the restoration of these ecosystems and the river water quality has become a high priority for federal and state governments and associated departments and agencies. Public concern is adding to the pressures on these departments and agencies to restore these ecosystems and to sustainably maintain the river water quality. The long term monitoring of floodplain wetlands has been limited, compounding the difficulties faced by managers and decision makers on assessing the potential outcome of restoration options. The role of this project in the broad scheme of restoration/rehabilitation is to contribute to the construction of a model capable of increasing managers and decision makers understanding, and build consensus of potential outcomes of management option. This model was to use available data. The developed model, based on WETMOD developed by Cetin (2001), simulates wetland internal nutrient processes, phytoplankton, zooplankton and macrophyte biomass as well as the interaction (nutrient and phytoplankton exchange) between wetlands and the river. The model further simulates the potential impact management options have on the wetlands, and their nutrient retention capacity, and therefore their impact on the river nutrient load. Due to the limitation of data, wetlands were considered in categories for which data was available. Of these two had sufficient data to develop, calibrate and validate the model. Management scenarios for these two wetlands were developed. These scenarios included, the impact of returning a degraded wetland in a turbid state to a rehabilitated clear state, and the impact the removal of nutrient from irrigation drainage inflows has on wetland nutrient retention, and consequent input to the river. Scenarios of the cumulative impact of the management of multiple wetlands were developed based on using these two wetlands, for which adequate data was available, as “exemplar” wetlands, i.e. data from these wetlands were substituted for other similar wetlands (those identified as belonging to the same category). The model scenarios of these multiple wetlands provide some insight into the potential response management may have on individual wetlands, the cumulative impact on river nutrient load and how wetland morphology may relate to management considerations. The model is restricted by data availability and consequently the outputs. Further, some limitations identified during the development of the model need to be addressed before it can be applied for management purposes. However, the model and methods provide a guide by which monitoring efforts can assist in developing future modelling assessments and gain a greater insight not only at the monitoring site but also on a landscape scale. Advisors/Committee Members: Recknagel, Friedrich (advisor), Ostendorf, Bertram (advisor), Lewis, Megan (advisor), School of Earth and Environmental Sciences (school).

Subjects/Keywords: River Murray; wetland modelling; wetland management; wetland nutrient retention; Wetlands South Australia Murray River Region (S. Aust.); Wetland Environmental aspects Murray River Region (S. Aust.)

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APA (6^th Edition):

Bjornsson, K. T. (2008). Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/47936

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bjornsson, Kjartan Tumi. “Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management.” 2008. Thesis, University of Adelaide. Accessed January 26, 2021. http://hdl.handle.net/2440/47936.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bjornsson, Kjartan Tumi. “Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management.” 2008. Web. 26 Jan 2021.

Vancouver:

Bjornsson KT. Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management. [Internet] [Thesis]. University of Adelaide; 2008. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2440/47936.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bjornsson KT. Regional scale modelling of the lower River Murray wetlands: a model for the assessment of nutrient retention of floodplain wetlands pre- and post-management. [Thesis]. University of Adelaide; 2008. Available from: http://hdl.handle.net/2440/47936

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations