subject:(Benthic invertebrates)

University of Waikato

1. Taikato, Vanessa Rona. Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour .

Degree: 2015, University of Waikato

URL: http://hdl.handle.net/10289/9618

► Te Tāhuna o Rangataua is a semi-enclosed, shallow sub estuarine embayment in the southern most end of the Tauranga Harbour. In 1974, a large portion… (more)

▼ Te Tāhuna o Rangataua is a semi-enclosed, shallow sub estuarine embayment in the southern most end of the Tauranga Harbour. In 1974, a large portion of the sub estuary was reclaimed for the siting of the Te Maunga Wastewater Treatment Plant (WWTP) oxidation ponds. When the ponds were created, important habitats were destroyed, including valuable marshlands in the upper intertidal fringe. As well as this, raw sewage was temporarily pumped into the intertidal area. Since 1974, the WWTP has been upgraded and the treatment ponds now act as a sludge settling pond, receiving treated waste water from the WWTP, which then moves through man-made wetlands and is discharged offshore. Seepages from the ponds are known to occur within Te Tāhuna o Rangataua and within these areas biological activity is limited. To study the effects of such anthropogenic stressors on a sheltered estuarine environment, a fine scale multi–disciplinary study was undertaken. The objectives within this study set out to develop an understanding of the cumulative impacts within the estuarine area, with a focus on benthic biodiversity in response to environmental condition. The study aimed to identify key environmental parameters which may be driving change in biodiversity and to identify key benthic invertebrate species which may be driving difference in community composition within the sediments. A gradient sampling design was adopted due to the lack of relevant control locations, with replicate samples taken at distances from the impact area. The design sampled the benthos along a gradient of distance to assess any changes in environmental condition and associated infauna, taking into account tidal influences. Sampling methods followed the Estuarine Monitoring Protocol which involved sampling sediments for environmental variables and benthic invertebrates. A Principal Co-ordinate Analysis of benthic invertebrates found a change in community composition along a gradient of distance from the impact site. Taking into account the confounding factor of intertidal zonation, hydrodynamics and geomorphology of the area, the change in community composition observed was discussed in the light of influences of the WWTP together with other prevailing factors. It is suggested complex hydrodynamic processes are occurring within the area. This is attributed to the various terrestrial inputs into the area, coupled with the flat and shallow nature of Te Tāhuna o Rangataua and being located at distance from the Tauranga Harbour entrance. These factors will result in longer residence times, accumulating sediments and pollutants from numerous sources. The depositional endpoints of sediments and pollutants therefore significantly influence associated benthic community structure. Similarity percentages analysis was undertaken to assess patterns in species assemblage distribution. This highlighted key species that characterised different areas of the sub estuary. The dominant bivalve Macomona liliana was found to characterize composition at distances further away… Advisors/Committee Members: Battershill, Chris (advisor).

Subjects/Keywords: Estuarine ecology; Benthic invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Taikato, V. R. (2015). Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/9618

Chicago Manual of Style (16^th Edition):

Taikato, Vanessa Rona. “Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour .” 2015. Masters Thesis, University of Waikato. Accessed March 04, 2021. http://hdl.handle.net/10289/9618.

MLA Handbook (7^th Edition):

Taikato, Vanessa Rona. “Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour .” 2015. Web. 04 Mar 2021.

Vancouver:

Taikato VR. Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour . [Internet] [Masters thesis]. University of Waikato; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10289/9618.

Council of Science Editors:

Taikato VR. Estuarine Condition and Macro-benthic Communities in Te Tāhuna o Rangataua, Te Awanui, Tauranga Harbour . [Masters Thesis]. University of Waikato; 2015. Available from: http://hdl.handle.net/10289/9618

University of Alberta

2. Wilson, Lindsey R. Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading.

Degree: MS, Department of Biological Sciences, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/fj236388z

► This mesocosm study investigates changes in aquatic invertebrate assemblages in response to iron application, a remediation treatment that inhibits internal phosphorus loading in culturally-eutrophied freshwaters.… (more)

Subjects/Keywords: benthic invertebrates; eutrophication; mesocosms; zooplankton; iron remediation

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Wilson, L. R. (2013). Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/fj236388z

Chicago Manual of Style (16^th Edition):

Wilson, Lindsey R. “Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading.” 2013. Masters Thesis, University of Alberta. Accessed March 04, 2021. https://era.library.ualberta.ca/files/fj236388z.

MLA Handbook (7^th Edition):

Wilson, Lindsey R. “Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading.” 2013. Web. 04 Mar 2021.

Vancouver:

Wilson LR. Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading. [Internet] [Masters thesis]. University of Alberta; 2013. [cited 2021 Mar 04]. Available from: https://era.library.ualberta.ca/files/fj236388z.

Council of Science Editors:

Wilson LR. Responses of aquatic invertebrate assemblages to an iron treatment aimed at reducing internal phosphorus loading. [Masters Thesis]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/fj236388z

3. Foster, William J. Palaeoecology of the late Permian mass extinction and subsequent recovery.

Degree: PhD, 2015, University of Plymouth

URL: http://hdl.handle.net/10026.1/5467

► Climate warming during the latest Permian is associated with the most severe mass extinction event of the Phanerozoic, and the expansion of hypoxic and anoxic… (more)

▼ Climate warming during the latest Permian is associated with the most severe mass extinction event of the Phanerozoic, and the expansion of hypoxic and anoxic conditions into shallow shelf settings. Our understanding of the magnitude, pattern and duration of the extinction event and subsequent recovery remains equivocal. Evidence suggests that the action of waves provided an oxygenated refuge, i.e. ‘habitable zone’, above wave base that may be limited to high latitudes, in association with a faster pace of recovery. In addition, advanced recovery faunas have been documented from the Induan and there is evidence from the pelagic realm that further biotic crises may have delayed the recovery of benthic organisms coinciding with large carbon isotope perturbations at the Lower Triassic sub-stage boundaries. To test these hypotheses, novel palaeoecological data was collected from localities in Hungary, northern Italy, and Svalbard. To understand better the ecological impact of the extinction, a database of all known benthic marine invertebrates from the Permian and Triassic periods was created, with each taxon assigned to a functional group based on their inferred lifestyle. This study found that the skeletal and ichnofaunal assemblages consistent with advanced ecological recovery are limited to settings aerated by wave activity, which supports the habitable zone hypothesis. In the western Palaeotethyan sections it was found that the proximal end of the ‘habitable zone’ was limited by persistent environmental stress attributed to increased runoff that resulted in large salinity fluctuations, increased sedimentation rates and eutrophication creating an environment only favourable for opportunistic taxa. In the Tirolites carniolicus Zone, however, the ‘habitable zone’ expands into more proximal and offshore settings. This is associated with climate cooling in the late Spathian. The data also demonstrate that despite the taxonomic severity of the extinction, only one mode of life went extinct and only one subsequently evolved in the aftermath. Functional diversity was, however, reduced in particular regions and environmental settings, and recovery varied spatially and temporally. In western Palaeotethys, benthic communities record evidence for biotic crises, such as reduced tiering in the Smithian, associated with Early Triassic carbon isotope excursions, but, until the Spathian there was no significant change in the composition of the benthic faunas.

Subjects/Keywords: 560; extinction; recovery; benthic invertebrates; anoxia

11 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Foster, W. J. (2015). Palaeoecology of the late Permian mass extinction and subsequent recovery. (Doctoral Dissertation). University of Plymouth. Retrieved from http://hdl.handle.net/10026.1/5467

Chicago Manual of Style (16^th Edition):

Foster, William J. “Palaeoecology of the late Permian mass extinction and subsequent recovery.” 2015. Doctoral Dissertation, University of Plymouth. Accessed March 04, 2021. http://hdl.handle.net/10026.1/5467.

MLA Handbook (7^th Edition):

Foster, William J. “Palaeoecology of the late Permian mass extinction and subsequent recovery.” 2015. Web. 04 Mar 2021.

Vancouver:

Foster WJ. Palaeoecology of the late Permian mass extinction and subsequent recovery. [Internet] [Doctoral dissertation]. University of Plymouth; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10026.1/5467.

Council of Science Editors:

Foster WJ. Palaeoecology of the late Permian mass extinction and subsequent recovery. [Doctoral Dissertation]. University of Plymouth; 2015. Available from: http://hdl.handle.net/10026.1/5467

University of Canterbury

4. Campbell, Rebecca Elisabeth. Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.

Degree: PhD, Ecology, 2011, University of Canterbury

URL: http://dx.doi.org/10.26021/7681

► Dendritic stream networks are inherently spatially and hierarchically structured, but the effects of this structure on stream communities are largely unknown. My aim was to… (more)

▼ Dendritic stream networks are inherently spatially and hierarchically structured, but the effects of this structure on stream communities are largely unknown. My aim was to investigate spatial patterns in stream networks using extensive spatial sampling of both adult and benthic macroinvertebrates in four stream networks on the West Coast of the South Island, New Zealand. Using spatial modelling and analyses, I answered questions about appropriate spatial measurements to capture ecological processes in stream networks, metacommunity processes at different scales in space and time, and how local and regional processes interact to structure metacommunities in stream networks. Spatial eigenfunction analyses showed that distance measures that explained most variance in stream macroinvertebrate communities were stream distance and weighted stream distance measures. They performed better than Euclidean distance to measure spatial structure that is ecologically relevant to stream network communities. The spatial pattern of benthic stream macroinvertebrates was stable over time, whereas community composition changed significantly, as shown by space-time interactions modelled by MANOVA-like redundancy analysis. Thus, spatial processes structuring stream metacommunities remained constant, in agreement with neutral model predictions. Network-scale properties, particularly flood disturbances, influenced the relative importance of spatial and environmental variation in stream network metacommunities. Additionally, quantile regression indicated that three key variables, habitat size, isolation and local habitat conditions, jointly limited community structure in stream networks, providing empirical support for both island biogeography and metacommunity theories. My study indicated that spatial structuring has an important influence on stream macroinvertebrate communities. The results contribute to broader ecological theory and understanding of community assembly by relating empirical results to theoretical predictions. In particular, they advance understanding of spatial processes in stream networks. The research also highlights a number of new methods, which were successfully applied to stream systems to elucidate complex spatial patterns.

Subjects/Keywords: Stream network; spatial ecology; benthic invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Campbell, R. E. (2011). Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. (Doctoral Dissertation). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7681

Chicago Manual of Style (16^th Edition):

Campbell, Rebecca Elisabeth. “Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.” 2011. Doctoral Dissertation, University of Canterbury. Accessed March 04, 2021. http://dx.doi.org/10.26021/7681.

MLA Handbook (7^th Edition):

Campbell, Rebecca Elisabeth. “Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?.” 2011. Web. 04 Mar 2021.

Vancouver:

Campbell RE. Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. [Internet] [Doctoral dissertation]. University of Canterbury; 2011. [cited 2021 Mar 04]. Available from: http://dx.doi.org/10.26021/7681.

Council of Science Editors:

Campbell RE. Spatial pattern and community assembly: does the configuration of stream networks influence their community structure?. [Doctoral Dissertation]. University of Canterbury; 2011. Available from: http://dx.doi.org/10.26021/7681

Laurentian University

5. Novodvorsky, Nicole-Marie. Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? .

Degree: 2015, Laurentian University

URL: https://zone.biblio.laurentian.ca/dspace/handle/10219/2392

► The management of aquatic ecosystems is important to preserve the ecosystem services provided to humanity. The development of environmental assessment has allowed the management and… (more)

▼ The management of aquatic ecosystems is important to preserve the ecosystem services provided to humanity. The development of environmental assessment has allowed the management and therefore protection of these important resources. Reference Condition Approach (RCA) bioassessments using benthic macroinvertebrates as indicators are common tools that provide a means of determining impairment of stream sites by comparing exposed test sites to relatively unexposed reference sites. RCA predictive models are commonly developed at the scale of drainage basin, ecoregion, or political region (i.e. United Kingdom or Australian state), and test site assessment is restricted within the spatial boundaries of the model. If test site assessment can be applied outside the spatial scope of the model, insofar that the environmental characteristics are similar, it would reduce extensive sampling i.e. remote northern locations and time-consuming development of numerous models. The overall goal of my study was to assess whether a predictive model applied across a larger spatial extent, and therefore encompassing a greater area for test sites to be assessed, is as effective as models generally developed within smaller geographic regions such as within a basin or watershed. Benthic invertebrates and habitat data from three areas in Canada were examined: the Attawapiskat River basin in northern Ontario, the Fraser River basin in British Columbia and the Yukon River basin. The RCA predictive model method was used in this study that determines the relationships between benthic community groups and the environmental descriptors that explain them and the Benthic Assessment of Sediment (BEAST) assessment method to compare test sites with a physical similar group of reference sites. The performance of the bioassessment was assessed using a common set of simulated impact (“simpacted”) sites with known responses iv of taxa to disturbance. Models for each basin and a multi-basin model were compared on prediction performance, parsimony, and sensitivity. The multi-basin model had comparable prediction performance (65% correctly classified) to single basin models (56-72%) but lacked the sensitivity that models for single basins possessed. The Attawapiskat was the most parsimonious with only 2 predictors but the Fraser and multi-basin models explained the most variance with more predictors (Wilks’ λ = 0.06 and 0.1 for the Fraser and multi-basin models, respectively). The results of this study showed that sites can be assessed outside the range of their reference data insofar that the test site is within the range of environmental characteristics within the model. A test site assessed as disturbed for the multi-basin model will in fact be disturbed but disturbed sites are less frequently detected compared to single basin models. Therefore as with any bioassessment, users need to be aware of the chance of committing type 1 and 2 errors. Developing models that target a single stressor of concern to increase the pool of available candidate predictors is…

Subjects/Keywords: Benthic invertebrates; Bioassessment; Benthic Assessment of Sediment; Reference Condition Approach

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Novodvorsky, N. (2015). Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? . (Thesis). Laurentian University. Retrieved from https://zone.biblio.laurentian.ca/dspace/handle/10219/2392

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):

Novodvorsky, Nicole-Marie. “Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? .” 2015. Thesis, Laurentian University. Accessed March 04, 2021. https://zone.biblio.laurentian.ca/dspace/handle/10219/2392.

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

MLA Handbook (7^th Edition):

Novodvorsky, Nicole-Marie. “Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? .” 2015. Web. 04 Mar 2021.

Vancouver:

Novodvorsky N. Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? . [Internet] [Thesis]. Laurentian University; 2015. [cited 2021 Mar 04]. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2392.

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

Council of Science Editors:

Novodvorsky N. Geographic extension of benthic Invertebrate RCA bioassessments: how far can we go? . [Thesis]. Laurentian University; 2015. Available from: https://zone.biblio.laurentian.ca/dspace/handle/10219/2392

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

San Jose State University

6. Loury, Erin Kimberly. Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California.

Degree: MS, Moss Landing Marine Laboratories, 2011, San Jose State University

URL: https://doi.org/10.31979/etd.ds8c-qwga ; https://scholarworks.sjsu.edu/etd_theses/4060

► Marine protected areas (MPAs) can potentially impact food web dynamics by increasing the density of predatory fishes within their borders. Such increases in density… (more)

Subjects/Keywords: benthic invertebrates; diet; feeding ecology; Goper Rockfish; marine protected areas

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Loury, E. K. (2011). Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.ds8c-qwga ; https://scholarworks.sjsu.edu/etd_theses/4060

Chicago Manual of Style (16^th Edition):

Loury, Erin Kimberly. “Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California.” 2011. Masters Thesis, San Jose State University. Accessed March 04, 2021. https://doi.org/10.31979/etd.ds8c-qwga ; https://scholarworks.sjsu.edu/etd_theses/4060.

MLA Handbook (7^th Edition):

Loury, Erin Kimberly. “Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California.” 2011. Web. 04 Mar 2021.

Vancouver:

Loury EK. Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California. [Internet] [Masters thesis]. San Jose State University; 2011. [cited 2021 Mar 04]. Available from: https://doi.org/10.31979/etd.ds8c-qwga ; https://scholarworks.sjsu.edu/etd_theses/4060.

Council of Science Editors:

Loury EK. Diet of the Gopher Rockfish (Sebastes carnatus) Inside and Outside of Marine Protected Areas in Central California. [Masters Thesis]. San Jose State University; 2011. Available from: https://doi.org/10.31979/etd.ds8c-qwga ; https://scholarworks.sjsu.edu/etd_theses/4060

7. Andrade, Maria Helena da Silva. O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos.

Degree: PhD, Ecologia: Ecossistemas Terrestres e Aquáticos, 2011, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19092011-142519/ ;

►

Este trabalho teve como objetivo investigar a hipótese de que a decoada (alteração dos parâmetros físicos e químicos da água) é um fenômeno natural importante… (more)

▼

Este trabalho teve como objetivo investigar a hipótese de que a decoada (alteração dos parâmetros físicos e químicos da água) é um fenômeno natural importante na estruturação da comunidade de invertebrados bentônicos do Pantanal do rio Paraguai, bem como a caracterizar a comunidade de macroinvertebrados bentônicos quanto à composição, abundância de organismos e riqueza em função das alterações ambientais provocadas pela decoada. Além disso, pretendeu-se contribuir para o conhecimento da biota do pantanal de Mato Grosso do Sul com o intuito de subsidiar ações de prevenção e/ou mitigação de possíveis impactos ambientais. Os ambientes escolhidos foram dois corpos de água adjacentes ao rio Paraguai, sendo um com características lênticas (Baía Tuiuiú) e outro, semi-lóticas (Bracinho), Corumbá/MS, ambos sob o efeito do pulso de inundação. O capítulo um realizou uma caracterização limnológica dos dois corpos de água ao longo de um ciclo hidrológico, enfatizando as alterações provocadas pela decoada, por ocasião da subida das águas. O capítulo 2 objetivou estudar a composição e a distribuição da fauna de Chironomidae relacionando-as com as alterações limnológicas ao longo de um ciclo hidrológico (abril/2008 a fevereiro/2009), enfatizando a influência da decoada. O capítulo 3 pretendeu conhecer a composição de Oligochaeta, considerando as relações com fatores abióticos, no intuito de contribuir para o entendimento do fenômeno da decoada bem como subsidiar posteriores trabalhos e ações relacionados à gestão da planície pantaneira, objetivando sua manutenção e conservação. A decoada é um evento que potencializa a desestruturação do ambiente, agindo significativamente sobre as populações de invertebrados bentônicos. O fato de não ter sido encontrado nenhum organismo vivo durante a ocorrência do fenômeno destaca a sua importância enquanto fator ecológico essencial na dinâmica das populações biológicas dos ecossistemas pantaneiros.

This study aimed to investigate the hypothesis that the decoada(change in physical and chemical parameters of water) is an important natural phenomenon in the community structure of benthic invertebrates in the Pantanal of the Paraguay River, and to characterize the benthic macroinvertebrate community regarding the composition, richness and abundance of organisms as a function of environmental changes caused by the \'decoada\'. In addition, soughted to contribute to the knowledge of the biota of wetland of Mato Grosso do Sul in order to support programs to prevent and / or mitigate potential environmental impacts. The areas chosen were two bodies of water adjacent to the Paraguay River, one with lentic feature (Tuiuiú Bay) and another, semi-lotic (\'Bracinho\'), Corumbá / MS, both of them suffering the effect of pulse flood. The chapter 1 conducted a limnological characterization of the two water bodies along a hydrological cycle, emphasizing the changes caused by the \'decoada\', when the water level rises. Chapter 2 aimed to study the composition and distribution of Chironomidae fauna relating…

Advisors/Committee Members: Brandimarte, Ana Lucia, Calheiros, Débora Fernandes.

Subjects/Keywords: Benthic invertebrates; Decoada; Decoada; Invertebrados bentônicos; Pantanal; Pantanal

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Andrade, M. H. d. S. (2011). O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19092011-142519/ ;

Chicago Manual of Style (16^th Edition):

Andrade, Maria Helena da Silva. “O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos.” 2011. Doctoral Dissertation, University of São Paulo. Accessed March 04, 2021. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19092011-142519/ ;.

MLA Handbook (7^th Edition):

Andrade, Maria Helena da Silva. “O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos.” 2011. Web. 04 Mar 2021.

Vancouver:

Andrade MHdS. O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos. [Internet] [Doctoral dissertation]. University of São Paulo; 2011. [cited 2021 Mar 04]. Available from: http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19092011-142519/ ;.

Council of Science Editors:

Andrade MHdS. O fenômeno da \"decoada\" no Pantanal do rio Paraguai, Corumbá/MS: alterações dos parâmetros limnológicos e efeitos sobre os macroinvertebrados bentônicos. [Doctoral Dissertation]. University of São Paulo; 2011. Available from: http://www.teses.usp.br/teses/disponiveis/41/41134/tde-19092011-142519/ ;

University of Tasmania

8. Hibberd, T. Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic.

Degree: 2016, University of Tasmania

URL: https://eprints.utas.edu.au/23442/1/Hibberd_whole_thesis.pdf

► The global imperative to sustainably manage deep-sea bottom fisheries and mitigate impacts to benthic habitats is constrained by the limited existing biological data available to… (more)

▼ The global imperative to sustainably manage deep-sea bottom fisheries and mitigate impacts to benthic habitats is constrained by the limited existing biological data available to inform decisionmaking. Physical surrogacy, where benthic biodiversity is characterised based on its relationship with environmental parameters, was explored as a means of extrapolating the distribution and biomass of benthic species from sample sites to seascapes of the deep-sea. The evaluation of surrogates focused on those benthic species considered most susceptible to disturbance from bottom fishing gears including sponges and corals (termed ‘vulnerable taxa’) and data from the sub-Antarctic Heard and McDonalds Islands (HIMI) region. HIMI hosts an established bottom fishery with protection for biodiversity afforded through a large marine protected area (MPA). However whether the MPA meets CAR principles (comprehensive, adequate and representative) in the context of vulnerable taxa remains largely unknown due to a limited understanding of the HIMI benthic habitats. To readdress the paucity of basic information and provide empirical data with which to develop predictive models, quantitative benthic samples were collected from 104 stations in depths of 200 to 1000 meters and analysed to document benthic biodiversity and community structure across HIMI. Data from HIMI were then used to develop surrogacy methods that were applied to other regions in the deep sea. A total of 312 taxa were recorded in the deep-sea at HIMI. Diversity was dominated by sessile suspension-feeders, including numerous undescribed and possibly endemic taxa, and was similar to other sub-Antarctic islands but lower than rich areas on the continental shelves of Antarctica and Australia. Analyses of assemblage structure using taxa biomass records and the clustering method 'Partitioning Around Medoids' revealed a clear zonation between HIMI’s eastern and western banks, the central plateau, south-facing slopes and waters deeper than 500 m, which was driven mostly by changes in seafloor current speed, temperature and the concentration of particulate organic carbon. Disturbance from bottom fishing was not identified as an important proxy for biodiversity despite extensive trawling for more than 10 years, and instead suggests a strong link between benthos and environmental parameters, highlighting the vulnerability of these communities to changing environmental conditions. Similarly, the restricted distributions of many taxa and levels of endemicity in some groups highlight the uniqueness and vulnerability of the HIMI benthic habitat and importance for conservation. Nonetheless, it was acknowledged that the study failed to sample the most heavily trawled areas at HIMI and that further taxonomic scrutiny (e.g. bryozoans are largely unsorted at this stage) might impact the study conclusions. From empirical data at HIMI, ten vulnerable taxa were selected for which there were sufficient observations for model training (n >50). Four modelling approaches were contrasted to…

Subjects/Keywords: benthic invertebrates; deep-sea; surrogacy; modelling; Heard Island; Antarctica; MPA

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Hibberd, T. (2016). Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/23442/1/Hibberd_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):

Hibberd, T. “Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic.” 2016. Thesis, University of Tasmania. Accessed March 04, 2021. https://eprints.utas.edu.au/23442/1/Hibberd_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):

Hibberd, T. “Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic.” 2016. Web. 04 Mar 2021.

Vancouver:

Hibberd T. Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic. [Internet] [Thesis]. University of Tasmania; 2016. [cited 2021 Mar 04]. Available from: https://eprints.utas.edu.au/23442/1/Hibberd_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:

Hibberd T. Describing and predicting the spatial distribution of benthic biodiversity in the sub-Antarctic and Antarctic. [Thesis]. University of Tasmania; 2016. Available from: https://eprints.utas.edu.au/23442/1/Hibberd_whole_thesis.pdf

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

University of Toronto

9. John, Margaretha Ann St. The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario.

Degree: 2009, University of Toronto

URL: http://hdl.handle.net/1807/17447

►

Iron mining began in Wawa, Ontario in the late 1800s and ceased in 1998. The sintering process of iron pyrite produced sulfur dioxide which led… (more)

Subjects/Keywords: acidification; benthic invertebrates; 0329

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

John, M. A. S. (2009). The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/17447

Chicago Manual of Style (16^th Edition):

John, Margaretha Ann St. “The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario.” 2009. Masters Thesis, University of Toronto. Accessed March 04, 2021. http://hdl.handle.net/1807/17447.

MLA Handbook (7^th Edition):

John, Margaretha Ann St. “The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario.” 2009. Web. 04 Mar 2021.

Vancouver:

John MAS. The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario. [Internet] [Masters thesis]. University of Toronto; 2009. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1807/17447.

Council of Science Editors:

John MAS. The Benthic Invertebrate Community of Lakes Previously Impaired by MiningI-related Acidification Near Wawa, Ontario. [Masters Thesis]. University of Toronto; 2009. Available from: http://hdl.handle.net/1807/17447

10. Janelle, Natalie Stauffer-Olsen. Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System.

Degree: Environmental Science, Policy, & Management, 2017, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/8914w078

► An understanding of the spatial and temporal diversity of benthic invertebrates is necessary to understand, manage, and protect freshwater habitats. Benthic invertebrates are important components… (more)

▼ An understanding of the spatial and temporal diversity of benthic invertebrates is necessary to understand, manage, and protect freshwater habitats. Benthic invertebrates are important components of aquatic ecosystems and are frequently used in bioassessment and biomonitoring programs. Benthic invertebrates can also play a role in nutrient cycling in lentic environments through bioturbation activities. This dissertation uses a range of techniques and analyses to understand the arrangement of benthic invertebrate diversity in Upper Klamath Lake, Oregon, and several watersheds in northern southern California. Upper Klamath Lake (UKL) is a large, shallow, naturally eutrophic lake that has experienced declines in water quality, which has led to annual cyanobacterial blooms of Aphanizomenon flos-aquae. Benthic invertebrates can increase autochthonous nutrient cycling through benthic bioturbation activities. In order to better understand the role that benthic invertebrates play in UKL, I studied the density, taxonomic richness, and species composition of benthic invertebrate assemblages in three geographic regions (north, central, and south) and three habitats (littoral, open-water and trench) across UKL. I also characterized sediment composition and water quality at each collection site and determined which environmental variables correlated with differences in benthic invertebrate composition. This research is located in Chapters 1 and 3 of this dissertation.Like benthic invertebrates in UKL, the mayfly Baetis tricaudatus is an abundant and ecologically important organism of freshwater ecosystems. Despite its widespread distribution, B. tricaudatus cannot be consistently and accurately identified and belongs to a species group known to have cryptic species diversity. While previous studies have examined the spatial distribution of this diversity, none have studied the temporal distribution. To better understand the temporal arrangement of diversity at the cytochrome oxidase subunit 1 (CO1) mitochondrial gene region, I collected B. tricaudatus specimens from 3 sites over 4 years and used haplotype networks to visualize diversity. Because my results were different than those from other studies on the same taxon, for my final chapter I analyzed Baetis rhodani group COI sequences from northern and southern California using Bayesian phylogenetic analyses and haplotype networks. This research contributes to our understanding of genetic diversity, which is an important component to biodiversity.

Subjects/Keywords: Aquatic sciences; Genetics; Limnology; Baetis tricaudatus; benthic invertebrates; distributions; hypereutrophic Lake

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Janelle, N. S. (2017). Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/8914w078

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):

Janelle, Natalie Stauffer-Olsen. “Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System.” 2017. Thesis, University of California – Berkeley. Accessed March 04, 2021. http://www.escholarship.org/uc/item/8914w078.

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

MLA Handbook (7^th Edition):

Janelle, Natalie Stauffer-Olsen. “Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System.” 2017. Web. 04 Mar 2021.

Vancouver:

Janelle NS. Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System. [Internet] [Thesis]. University of California – Berkeley; 2017. [cited 2021 Mar 04]. Available from: http://www.escholarship.org/uc/item/8914w078.

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

Council of Science Editors:

Janelle NS. Spatial and Temporal Variability in Benthic Invertebrate Assemblages and Population Genetics in a Lake and Stream System. [Thesis]. University of California – Berkeley; 2017. Available from: http://www.escholarship.org/uc/item/8914w078

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

University of Waikato

11. Monahan, Bradley John. Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin .

Degree: 2018, University of Waikato

URL: http://hdl.handle.net/10289/11843

► Dispersal is the process in which individuals are transferred between populations, and is essential for population sustainability and longevity. In estuarine soft sediment communities, dispersal… (more)

▼ Dispersal is the process in which individuals are transferred between populations, and is essential for population sustainability and longevity. In estuarine soft sediment communities, dispersal often occurs as the interaction between the individual and tidal flows. Many coastal benthic marine invertebrate populations have been considered open because of the dispersal potential of a pelagic larval phase, with populations maintained by an external supply of recruits. However, for estuarine populations, recent evidence has suggested that populations may be more closed because of local hydrodynamic conditions causing larval retention within the source estuary. In this thesis, field observations and numerical simulations were used to investigate the effect of estuary morphology on the transport and retention of benthic invertebrate larvae in Tauranga Harbour, a large (218 km2), shallow (mean depth = 2.8 m) meso-tidal estuary. Previous studies indicate that residence times extracted from hydrodynamic modelling vary throughout the harbour, due to residual circulation patterns caused by complex channel morphology. Field observations indicate increased abundance and differing community composition of invertebrate larvae in the upper harbour compared to the lower. Tidal circulation is asymmetrical, with transport through a seaward channel during flood tides, and in a landward channel during ebb, suggesting that larval retention in the upper harbour may provide a source of larvae for the lower harbour. Larval transport pathways were evaluated by a coupled hydrodynamic-transport model and confirmed those observed in the field. Modelled larvae, released under different stages of spring-neap tidal cycle in the upper harbour, were retained for up to 16 d whereas retention for larvae released in other harbour locations was much more variable and depended on the timing of release and direction of initial transport. Results of this study highlight the impact of complex channel morphology (particularly at a scale of 10s to 100s of meters) on the large scale circulation and subsequent transport and retention of benthic invertebrate larvae. Understanding these influences on the transportation of benthic invertebrate larvae and the identification of retentive regions, will aid future population management or conservation efforts Advisors/Committee Members: Pilditch, Conrad A (advisor), Bryan, Karin R (advisor), Mullarney, Julia C (advisor).

Subjects/Keywords: Dispersal; Population Connectivity; Tauranga Harbour; Benthic Marine Invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Monahan, B. J. (2018). Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin . (Doctoral Dissertation). University of Waikato. Retrieved from http://hdl.handle.net/10289/11843

Chicago Manual of Style (16^th Edition):

Monahan, Bradley John. “Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin .” 2018. Doctoral Dissertation, University of Waikato. Accessed March 04, 2021. http://hdl.handle.net/10289/11843.

MLA Handbook (7^th Edition):

Monahan, Bradley John. “Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin .” 2018. Web. 04 Mar 2021.

Vancouver:

Monahan BJ. Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin . [Internet] [Doctoral dissertation]. University of Waikato; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10289/11843.

Council of Science Editors:

Monahan BJ. Transport and retention of benthic marine invertebrates in the Southern Tauranga Basin . [Doctoral Dissertation]. University of Waikato; 2018. Available from: http://hdl.handle.net/10289/11843

12. Bertin, Delphine. Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates.

Degree: Docteur es, Écologie des communautés, fonctionnement des écosystèmes, écotoxicologie, 2014, Université Claude Bernard – Lyon I

URL: http://www.theses.fr/2014LYO10274

►

L'accumulation de composés persistants dans le biote constitue des préoccupations écologiques, sanitaires et réglementaires. Parmi ces substances, les composés per- et polyfluorés (PFASs) représentent un… (more)

▼

L'accumulation de composés persistants dans le biote constitue des préoccupations écologiques, sanitaires et réglementaires. Parmi ces substances, les composés per- et polyfluorés (PFASs) représentent un cas d'intérêt, en raison de leurs propriétés physico-chimiques particulières. Ces dernières rendent le comportement des PFASs dans l'environnement difficilement prévisibles, les outils actuels n'étant pas adaptés. Bien qu'il soit reconnu que ces composés sont persistants et s'accumulent dans le biote, de nombreuses inconnues subsistent, notamment sur les mécanismes de transferts sédiment–biote et des facteurs qui les contrôlent. Ce travail de thèse aborde le rôle du sédiment dans les processus d'accumulation, et plus particulièrement (a) les voies d'exposition du biote, (b) le rôle de la diversité biologique dans l'accumulation, par l'exposition de deux invertébrés benthiques (Chironomus riparius et gammarus sp.) à du sédiment naturel. La description des cinétiques d'accumulation et d'élimination des PFASs ont mis en évidence la biodisponibilité des composés pour les organismes. Ainsi, un modèle de bioaccumulation en accord avec la croissance des organismes et des particularités des composés a permis d'estimer des constantes d'accumulation et de dépuration (ku et ke). Une représentation conceptuelle du transfert des composés, a permis de comprendre les principales voies de contamination des organismes. D'autre part, la variabilité interspécifique a été évaluée par la comparaison de la bioaccumulation et des voies de transfert des PFASs chez ces deux invertébrés. Ce travail de thèse aura alors permis d'ouvrir de nombreuses questions, notamment celles du rôle du biofilm et de la bioturbation des organismes dans la bioaccumulation et ouvre les perspectives quant à l'étude de la bioamplification

The accumulation of persistent compounds in biota creates environmental, health and regulatory concerns. Among these substances, the poly-fluorinated compounds (PFASs) represents a case of interest due to their specific physicochemical properties. So the PFAs behavior in the environment is difficult to predict as the existing tools are not suitable. Athough it is recognized that these compounds are persistent and accumulate in biota, many knowledge gaps remain, including the mechanisms of sediment-biota transfer and the factors that control them. This thesis examines the role of sediment in the accumulation process, especially (a) exposure routes of biota, (b) role of biodiversity in the accumulation, by exposing two benthic invertebrates (Chironomus riparius and Gammarus sp.) to natural sediment. The description of PFASs kinetics of accumulation and elimination have showed the biodisponibility of the compounds to organisms. Thus, a bioaccumulation model including the organisms growth and the specificity of the compounds was used to estimate the accumulation and depuration rate constants (ku and ke). A conceptual representation of compounds transfer allowed us to understand the major routes for organisms contamination.…

Advisors/Committee Members: Garric, Jeanne (thesis director), Babut, Marc (thesis director).

Subjects/Keywords: Sédiment; PFASs; Bioaccumulation; Invertébrés benthiques; Sediment; PFASs; Bioaccumulation; Benthic invertebrates; 577

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Bertin, D. (2014). Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates. (Doctoral Dissertation). Université Claude Bernard – Lyon I. Retrieved from http://www.theses.fr/2014LYO10274

Chicago Manual of Style (16^th Edition):

Bertin, Delphine. “Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates.” 2014. Doctoral Dissertation, Université Claude Bernard – Lyon I. Accessed March 04, 2021. http://www.theses.fr/2014LYO10274.

MLA Handbook (7^th Edition):

Bertin, Delphine. “Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates.” 2014. Web. 04 Mar 2021.

Vancouver:

Bertin D. Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates. [Internet] [Doctoral dissertation]. Université Claude Bernard – Lyon I; 2014. [cited 2021 Mar 04]. Available from: http://www.theses.fr/2014LYO10274.

Council of Science Editors:

Bertin D. Transfert des composés perfluorés des sédiments aux invertébrés benthiques : Transfer of perfluorinated compounds from sediment to benthie invertebrates. [Doctoral Dissertation]. Université Claude Bernard – Lyon I; 2014. Available from: http://www.theses.fr/2014LYO10274

University of Manitoba

13. Randell, Matthew Edward. Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context.

Degree: Environment and Geography, 2019, University of Manitoba

URL: http://hdl.handle.net/1993/34300

► The current techniques used to assess aquatic invertebrate community status in the field are typically labour and time intensive, and therefore the development and implementation… (more)

Subjects/Keywords: Chitobiase; Environmental effects monitoring; Benthic invertebrates; Mesocosm; Biomass; Secondary production

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Randell, M. E. (2019). Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/34300

Chicago Manual of Style (16^th Edition):

Randell, Matthew Edward. “Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context.” 2019. Masters Thesis, University of Manitoba. Accessed March 04, 2021. http://hdl.handle.net/1993/34300.

MLA Handbook (7^th Edition):

Randell, Matthew Edward. “Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context.” 2019. Web. 04 Mar 2021.

Vancouver:

Randell ME. Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context. [Internet] [Masters thesis]. University of Manitoba; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1993/34300.

Council of Science Editors:

Randell ME. Chitobiase as a surrogate measure of aquatic invertebrate biomass and secondary production in an environmental effects monitoring context. [Masters Thesis]. University of Manitoba; 2019. Available from: http://hdl.handle.net/1993/34300

Queen Mary, University of London

14. Sampson, Aurora. The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams.

Degree: PhD, 2015, Queen Mary, University of London

URL: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9862 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775123

► Recent evidence suggests that methane-derived carbon can provide an energy source to freshwater food webs. Cased caddis (Trichoptera) larvae, such as Agapetus fuscipes and Silo… (more)

Subjects/Keywords: benthic invertebrates; methane-derived carbon; cased caddis populations.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Sampson, A. (2015). The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams. (Doctoral Dissertation). Queen Mary, University of London. Retrieved from http://qmro.qmul.ac.uk/xmlui/handle/123456789/9862 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775123

Chicago Manual of Style (16^th Edition):

Sampson, Aurora. “The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams.” 2015. Doctoral Dissertation, Queen Mary, University of London. Accessed March 04, 2021. http://qmro.qmul.ac.uk/xmlui/handle/123456789/9862 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775123.

MLA Handbook (7^th Edition):

Sampson, Aurora. “The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams.” 2015. Web. 04 Mar 2021.

Vancouver:

Sampson A. The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams. [Internet] [Doctoral dissertation]. Queen Mary, University of London; 2015. [cited 2021 Mar 04]. Available from: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9862 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775123.

Council of Science Editors:

Sampson A. The role of methane-derived carbon as an energy subsidy to benthic invertebrates in streams. [Doctoral Dissertation]. Queen Mary, University of London; 2015. Available from: http://qmro.qmul.ac.uk/xmlui/handle/123456789/9862 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.775123

15. Molin, Johan. Predation på evertebrater under tidig vår i sjön Tåkern.

Degree: The Institute of Technology, 2012, Linköping UniversityLinköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79044

► Benthic invertebrates play important roles as feeding resources for many organisms in different food webs. Shifts in predation of these organisms can generate cascading… (more)

Subjects/Keywords: Predation; Predator-prey interactions; Benthic invertebrates; Exclosures; Tåkern; Benthivorous fish; Waterfowl

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Molin, J. (2012). Predation på evertebrater under tidig vår i sjön Tåkern. (Thesis). Linköping UniversityLinköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79044

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):

Molin, Johan. “Predation på evertebrater under tidig vår i sjön Tåkern.” 2012. Thesis, Linköping UniversityLinköping University. Accessed March 04, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79044.

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

MLA Handbook (7^th Edition):

Molin, Johan. “Predation på evertebrater under tidig vår i sjön Tåkern.” 2012. Web. 04 Mar 2021.

Vancouver:

Molin J. Predation på evertebrater under tidig vår i sjön Tåkern. [Internet] [Thesis]. Linköping UniversityLinköping University; 2012. [cited 2021 Mar 04]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79044.

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

Council of Science Editors:

Molin J. Predation på evertebrater under tidig vår i sjön Tåkern. [Thesis]. Linköping UniversityLinköping University; 2012. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79044

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

University of Guelph

16. Matten, Kevin. Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates.

Degree: MS, School of Environmental Sciences, 2019, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17434

► Naphthalene sulfonic acids (NSAs) are used extensively as anti-corrosive additives in fuels, coatings, and lubricants. However, very little data exist of their potential impact on… (more)

Subjects/Keywords: Aquatic Toxicology; Ecotoxicology; Naphthalene Sulfonic Acids; Sediment Toxicity Testing; Benthic Invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Matten, K. (2019). Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17434

Chicago Manual of Style (16^th Edition):

Matten, Kevin. “Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates.” 2019. Masters Thesis, University of Guelph. Accessed March 04, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17434.

MLA Handbook (7^th Edition):

Matten, Kevin. “Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates.” 2019. Web. 04 Mar 2021.

Vancouver:

Matten K. Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates. [Internet] [Masters thesis]. University of Guelph; 2019. [cited 2021 Mar 04]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17434.

Council of Science Editors:

Matten K. Effect characterization of sediment-associated naphthalene sulfonates (NSAs) on freshwater benthic invertebrates. [Masters Thesis]. University of Guelph; 2019. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/17434

17. Umek, John W. The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe.

Degree: 2016, University of Nevada – Reno

URL: http://hdl.handle.net/11714/2255

► Invasive species have become an increasing problem in the Western United States particularly when there are multiple stressors (e.g., invasive species and eutrophication) occurring to… (more)

▼ Invasive species have become an increasing problem in the Western United States particularly when there are multiple stressors (e.g., invasive species and eutrophication) occurring to ecosystems. Invasive omnivores can present unique problems for aquatic ecosystems by having both direct and indirect impacts on native benthic invertebrates and vertebrates. Omnivorous crayfish, for example, strongly influence littoral habitats and biota with their foraging habits, creating both direct and indirect effects on trophic interactions in aquatic systems. Once they invade, these crayfish can ultimately dominate freshwater ecosystems. This dissertation investigates the distribution, density changes, and the direct and indirect impacts of the invasive signal crayfish (Pacifastacus leniusculus) in two oligotrophic lentic ecosystems in the western United States; Lake Tahoe (CA-NV) and Crater Lake (OR). In chapter 1, I investigate the distribution, movement, and feeding behavior of invasive signal crayfish in Crater Lake. This lake population presents a unique opportunity to understand the movement of crayfish in a recently expanding population. I used minnow traps and snorkeling to determine crayfish distribution and stable isotope ratios of δ13C and δ15N to determine the flow of organic matter through the food web, trophic position, and percent benthic reliance. Depth gradient minnow traps demonstrate that crayfish densities can live as deep as 250 m. Trap and snorkel surveys from 2008 to 2013 indicate an expansion of crayfish from 44% to 78% of the littoral zone. Summer water temperature in Crater Lake has been warming, which may increase the recruitment of individuals and expand habitat availability for growth. Between 1965 and 2014 the nearshore surface temperature increased by 3.5°C. Principal component analysis revealed a positive relationship between crayfish occupation and cobble and boulder habitats of the lake. Crayfish in the littoral zone rely heavily (97.4%) on littoral-benthic carbon sources indicating their potential for impacting native invertebrate communities and the overall dynamics of Crater Lake’s ecosystem. Our findings indicate, however, that deeper water crayfish also may rely on littoral benthic energy resources. Crayfish movement to deeper waters may be subsidizing generally nutrient poor, deep-water habitats with littoral energy through excretion and egestion, where physical conditions are stable and natural perturbation is low.In Chapter 2, I quantify the influence of this early, expanding invasion in Crater Lake to littoral zone ecology by evaluating their influence on zoobenthic consumer biomass and basal algal biomass. Benthic invertebrate biomass was 77% lower in hard substrate and 78% lower in soft substrate areas with crayfish present than in crayfish-absent locations. Using Bayesian, stable isotope mixing models, dietary preferences of crayfish at three locations with varying crayfish densities were quantified. Only slight variations in crayfish diet were detected between the three locations… Advisors/Committee Members: Chandra, Sudeep (advisor), Collopy, Michael (committee member), Leger, Elizabeth (committee member), Heyvaert, Alan (committee member), Poulson, Simon (committee member).

Subjects/Keywords: benthic invertebrates; food web; invasive species; singal crayfish; stable isotope

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Umek, J. W. (2016). The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/2255

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):

Umek, John W. “The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe.” 2016. Thesis, University of Nevada – Reno. Accessed March 04, 2021. http://hdl.handle.net/11714/2255.

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

MLA Handbook (7^th Edition):

Umek, John W. “The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe.” 2016. Web. 04 Mar 2021.

Vancouver:

Umek JW. The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe. [Internet] [Thesis]. University of Nevada – Reno; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11714/2255.

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

Council of Science Editors:

Umek JW. The Ecology of Signal Crayfish in Two Large Ultra-Oligotrophic Ecosystems: Crater Lake and Lake Tahoe. [Thesis]. University of Nevada – Reno; 2016. Available from: http://hdl.handle.net/11714/2255

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

Texas State University – San Marcos

18. Zawalski, Rebecca A. Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX.

Degree: MS, Population and Conservation Biology, 2017, Texas State University – San Marcos

URL: https://digital.library.txstate.edu/handle/10877/6798

► Benthic macroinvertebrates (BMI) are widely used as bio-indicators for local in-stream quality. However, local community structure can be affected by smaller scale (local) environmental conditions… (more)

Subjects/Keywords: Benthic; Macroinvertebrate; Metacommunity; Guadalupe; Texas; Stream invertebrates – Texas – Guadalupe River

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Zawalski, R. A. (2017). Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX. (Masters Thesis). Texas State University – San Marcos. Retrieved from https://digital.library.txstate.edu/handle/10877/6798

Chicago Manual of Style (16^th Edition):

Zawalski, Rebecca A. “Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX.” 2017. Masters Thesis, Texas State University – San Marcos. Accessed March 04, 2021. https://digital.library.txstate.edu/handle/10877/6798.

MLA Handbook (7^th Edition):

Zawalski, Rebecca A. “Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX.” 2017. Web. 04 Mar 2021.

Vancouver:

Zawalski RA. Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX. [Internet] [Masters thesis]. Texas State University – San Marcos; 2017. [cited 2021 Mar 04]. Available from: https://digital.library.txstate.edu/handle/10877/6798.

Council of Science Editors:

Zawalski RA. Benthic Macroinvertebrate Metacommunity Structure of the Guadalupe River Basin, TX. [Masters Thesis]. Texas State University – San Marcos; 2017. Available from: https://digital.library.txstate.edu/handle/10877/6798

Swedish University of Agricultural Sciences

19. Johansson, Karin S. L. Drivers and food web effects of Gonyostomum semen blooms.

Degree: 2013, Swedish University of Agricultural Sciences

URL: http://pub.epsilon.slu.se/10460/

► The flagellate Gonyostomum semen forms dense late-summer blooms in humic lakes and is a nuisance to swimmers because it forms a slimy coat on the… (more)

▼ The flagellate Gonyostomum semen forms dense late-summer blooms in humic lakes and is a nuisance to swimmers because it forms a slimy coat on the skin, causing irritation in sensitive individuals. Increasing occurrence and bloom incidence of G. semen has been reported during recent decades, but it is not clear which factors affect the distribution and bloom formation of this alga. Large cell size, ejection of long, slimy threads (trichocysts), and nighttime migration to the hypolimnion may limit grazing on G. semen by herbivorous zooplankton, resulting in a decreased coupling between phytoplankton and higher trophic levels during blooms. The studies included in this thesis investigate which factors affect G. semen occurrence and bloom formation and how G. semen blooms affect the community composition and trophic interactions in boreal, humic lakes. The occurrence of G. semen has increased between 1995 and 2010, especially in southern Sweden. Bloom incidence and total biomass did not increase continually, but fluctuated among years and peaked in the middle of the study period. Temperature and length of the growing season affected the occurrence and, to a lesser extent, bloom formation of G. semen, but local factors such as pH and water colour were more important for bloom formation. More lakes may become suitable habitats with the ongoing increase in water colour and increasing temperatures may result in a more frequent occurrence and bloom formation of G. semen. Blooms resulted in a shift in zooplankton assemblages toward predominance by small cladocerans, which were not able to feed on G. semen but instead fed more on heterotrophic food resources, supporting the hypothesis of a reduced coupling between phytoplankton and zooplankton. Zooplankton assemblages predominated by small animals feeding on low-quality resources may reduce the food quality for planktivorous fish. Instead, the invertebrate predator C. flavicans appeared to benefit from G. semen blooms, as indicated by its high abundance in bloom-lakes. Calanoid copepods and a large cladoceran fed efficiently on G. semen in the laboratory, indicating that there is, however, some trophic coupling between G. semen and higher trophic levels. This supports the use of biomanipulation of fish communities for controlling G. semen blooms.

Subjects/Keywords: algae; mastigophora; plankton blooms; food chains; zooplankton; lakes; benthic environment; invertebrates; sweden; algal blooms; Raphidophyceae; trophic interactions; food webs; PUFA; bacteria; heterotrophic protists; zooplankton; benthic invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Johansson, K. S. L. (2013). Drivers and food web effects of Gonyostomum semen blooms. (Doctoral Dissertation). Swedish University of Agricultural Sciences. Retrieved from http://pub.epsilon.slu.se/10460/

Chicago Manual of Style (16^th Edition):

Johansson, Karin S L. “Drivers and food web effects of Gonyostomum semen blooms.” 2013. Doctoral Dissertation, Swedish University of Agricultural Sciences. Accessed March 04, 2021. http://pub.epsilon.slu.se/10460/.

MLA Handbook (7^th Edition):

Johansson, Karin S L. “Drivers and food web effects of Gonyostomum semen blooms.” 2013. Web. 04 Mar 2021.

Vancouver:

Johansson KSL. Drivers and food web effects of Gonyostomum semen blooms. [Internet] [Doctoral dissertation]. Swedish University of Agricultural Sciences; 2013. [cited 2021 Mar 04]. Available from: http://pub.epsilon.slu.se/10460/.

Council of Science Editors:

Johansson KSL. Drivers and food web effects of Gonyostomum semen blooms. [Doctoral Dissertation]. Swedish University of Agricultural Sciences; 2013. Available from: http://pub.epsilon.slu.se/10460/

North Carolina State University

20. McNett, Jacquelyn Kristine. Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments.

Degree: MS, Biological and Agricultural Engineering, 2010, North Carolina State University

URL: http://www.lib.ncsu.edu/resolver/1840.16/6269

► Stormwater experts agree that the currently used Best Management Practice (BMP) percent removal methodology metric has many flaws, because it does not account for background… (more)

▼ Stormwater experts agree that the currently used Best Management Practice (BMP) percent removal methodology metric has many flaws, because it does not account for background water quality, eco-region differentiation, or irreducible concentrations. Some have suggested utilizing a BMP effluent concentration metric. Chapter 1 establishes an effluent target concentration for BMPs that relates to the health of macro-invertebrates in receiving water. 193 ambient water quality monitoring stations in North Carolina were paired with benthic macro-invertebrate health ratings collected in very close proximity. Water quality for the sites ranged from Excellent to Poor and was divided into three distinct eco-regions: Mountain, Piedmont, and Coastal. Statistically significant relationships were found in one or more eco-regions for DO, Fecal Coliform, NH3, NO2-3 - N, TKN, TN, and TP. BMPs can then be selected and designed to meet these target effluent concentrations. Based upon this research, a development, and therefore set of BMPs, in Piedmont North Carolina could be required to release TN and TP effluent concentrations of 0.99 mg/L and 0.11 mg/L, respectively. These concentrations are both associated with "Good" Benthos health. The new method was most effective in the Piedmont eco-region, however with more data collection, the Mountain and Coastal eco-regions may also benefit. The removal efficiency metric inherently assumes a definite association between influent and effluent pollutant concentrations. Such a relationship has been minimally studied for bioretention, the most common stormwater control measure associated with Low Impact Development (LID). Chapter 2 analyzes influent and effluent TN and TP concentrations from 11 bioretention cells in the Mid-Atlantic United States. Pooled data showed only a slight association between influent and effluent TN. Essentially no relationship exists between influent and effluent TP concentrations. Both findings indicate that the percent removal metric is probably a faulty means of evaluating bioretention performance. Furthermore, as influent nutrient concentration in runoff increases, the removal efficiency increases for TN and TP. â€œDirtierâ€ influent TP concentrations were effectively reduced; conversely, â€œcleanerâ€ TP influent concentrations increased, both tending toward an irreducible effluent concentration (0.10 to 0.18 mg/l). TN data also may have been tending toward a common concentration; however, the value was not as discernible. After developing a new set of standards for water quality (Chapter 1) and verifying the need for a new method of BMP assessment (Chapter 2), the feasibility of these innovative standards was examined (Chapter 3). Which BMPs, if any, can meet effluent standards set by the WQABI metric established in Chapter 1? A compilation of Mid-Atlantic effluent total nitrogen (TN) and effluent total phosphorus (TP) concentrations were compiled from existing, published studies conducted on the nine most commonly installed BMPs, including: bioretention cells, dry… Advisors/Committee Members: Dr. William F. Hunt, Committee Chair (advisor), Ms. Anne Spafford, Committee Member (advisor), Dr. Gregory Jennings, Committee Member (advisor).

Subjects/Keywords: Benthic Macro-invertebrates; BMP efficiency; Percent Removal; BMPs; Water Quality; Stormwater Sediment Toxicity; Forebays; Stormwater

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

McNett, J. K. (2010). Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments. (Thesis). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/6269

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):

McNett, Jacquelyn Kristine. “Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments.” 2010. Thesis, North Carolina State University. Accessed March 04, 2021. http://www.lib.ncsu.edu/resolver/1840.16/6269.

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

MLA Handbook (7^th Edition):

McNett, Jacquelyn Kristine. “Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments.” 2010. Web. 04 Mar 2021.

Vancouver:

McNett JK. Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments. [Internet] [Thesis]. North Carolina State University; 2010. [cited 2021 Mar 04]. Available from: http://www.lib.ncsu.edu/resolver/1840.16/6269.

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

Council of Science Editors:

McNett JK. Proposing a New Method of Stormwater BMP Assessment and Evaluating the Toxicity of Forebay Sediments. [Thesis]. North Carolina State University; 2010. Available from: http://www.lib.ncsu.edu/resolver/1840.16/6269

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

University of Guelph

21. VanEngen, Ryan. Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes.

Degree: MS, Department of Environmental Biology, 2012, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3598

► The objective of this thesis was to assess the physical (concentrations, durations, and sedimentation) and biological effects of total suspended solids (TSS) in Arctic lakes… (more)

Subjects/Keywords: Total Suspended Solids; Sedimentation; Arctic Lakes; Stable Isotope Analysis; Lake Trout; Benthic Invertebrates

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

VanEngen, R. (2012). Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3598

Chicago Manual of Style (16^th Edition):

VanEngen, Ryan. “Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes.” 2012. Masters Thesis, University of Guelph. Accessed March 04, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3598.

MLA Handbook (7^th Edition):

VanEngen, Ryan. “Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes.” 2012. Web. 04 Mar 2021.

Vancouver:

VanEngen R. Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes. [Internet] [Masters thesis]. University of Guelph; 2012. [cited 2021 Mar 04]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3598.

Council of Science Editors:

VanEngen R. Assessment of the Physical and Biological Effects of Mine Related Total Suspended Solids in Arctic Lakes. [Masters Thesis]. University of Guelph; 2012. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3598

Freie Universität Berlin

22. Irving, Katherine Sarah. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.

Degree: 2020, Freie Universität Berlin

URL: http://dx.doi.org/10.17169/refubium-27010

► Artverbreitungsmodelle (eng.: species distribution models; SDMs) werden zunehmend für Flussökosysteme angewandt um groß-skalige Analysen zu ergänzen. In der aktuellen ökologischen Theorie wird das Abflussverhalten als… (more)

▼ Artverbreitungsmodelle (eng.: species distribution models; SDMs) werden zunehmend für Flussökosysteme angewandt um groß-skalige Analysen zu ergänzen. In der aktuellen ökologischen Theorie wird das Abflussverhalten als einer der wesentlichen Einflussfaktoren für das Vorkommen und die Verbreitung von Flusslebewesen beschrieben. Es gibt jedoch nur wenige Studien zur Modellierung der Verbreitung von Fließgewässerarten, die Daten berücksichtigen, die das Abflussverhalten detailliert beschreiben. Anstelle dessen, werden häufig Klimadaten, oder aber indirekte Indikatoren genutzt. Derartige indirekte hydrologische Indikatoren haben zwar einen großen Einfluss auf die Verbreitung von Fließgewässerarten, dennoch können sie die wesentlichen Faktoren des Abflussverhaltens nur teilweise abbilden. Dieses Vorgehen ist teilweise auf die Verfügbarkeit von geeigneten hydrologischen Daten für SDMs zurückzuführen, da diese meist in ihrer räumlichen und zeitlichen Ausdehnung und Auflösung limitiert sind. Eine weitere Herausforderung in der Anwendung von SDMs ist die Auswahl relevanter Umwelt-Prädiktoren bei der Modellierung großer Artgemeinschaften, da diese Entscheidung zumeist für die gesamte Artgemeinschaft vorgenommen wird und entsprechend nicht artspezifisch ist. Dies führt dazu, dass die Prädiktoren für einige Arten ungeeignet sind, was wiederum die Modellgüte und die vorhergesagten Verbreitungsmuster beeinflusst. Das Hauptziel der vorliegenden methodischen Arbeit ist es, die Vorhersagekapazitäten von SDMs für benthische Makroinvertebraten durch Einbindung von hydrologischen Prädiktoren, die das Abflussverhalten beschreiben, zu verbessern. Die Arbeit besteht aus drei Teilen. Im ersten Teil habe ich einen zeitlich und räumlich (1 km2) hoch aufgelösten Datensatz, der den Abfluss und eine Reihe weiterer hydrologischer Einflussgrößen beinhaltet, für Deutschland entwickelt. Im zweiten Teil habe ich eine Methode zur Ermittlung der optimalen Prädiktoren für den Einsatz in SDMs entwickelt und den Effekt der Auswahl der Prädiktoren auf SDMs untersucht. Im dritten Teil geht es um die Rolle der Hydrologie in SDMs, die ich über den Einfluss von klimatischen und hydrologischen Datensätzen untersucht habe. Auf der Grundlage von deutschlandweit gemessenen Abflussdaten und modellierten Niederschlagsdaten, habe ich mittels gewichteter linearer Regression deutschlandweite tägliche Abflussdaten (m3 s-1) für einen Zeitraum von 64 Jahren (1950 bis 2013) erstellt. Im Anschluss wurden diese täglichen Abflussdaten verwendet, um 53 Indikatoren der hydrologischen Veränderung (IHA) zu berechnen, die die Stärke, Frequenz, Dauer, und Größe der Veränderung von Hoch- Niedrig-und Mittelwasser Ereignissen beschreiben. Die Abflussdaten wurden zeitlich und räumlich validiert, wodurch ich erfolgreich zeigen konnte, dass die modellierten IHA für SDMs genutzt werden können. Sowohl die IHA, als auch die modellierten Abflussdaten sind öffentlich verfügbar und können so für SDMs genutzt werden. Unter Anwendung der modellierten IHA sowie der Klima-, Landnutzungs-, und… Advisors/Committee Members: female (gender), Jähnig, Sonja C. (firstReferee), Tockner, Klement (furtherReferee).

Subjects/Keywords: Species distribution models; benthic macro invertebrates; flow regime; rivers; predictive modelling; stream flow; ddc:577

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Irving, K. S. (2020). Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. (Thesis). Freie Universität Berlin. Retrieved from http://dx.doi.org/10.17169/refubium-27010

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):

Irving, Katherine Sarah. “Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.” 2020. Thesis, Freie Universität Berlin. Accessed March 04, 2021. http://dx.doi.org/10.17169/refubium-27010.

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

MLA Handbook (7^th Edition):

Irving, Katherine Sarah. “Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates.” 2020. Web. 04 Mar 2021.

Vancouver:

Irving KS. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. [Internet] [Thesis]. Freie Universität Berlin; 2020. [cited 2021 Mar 04]. Available from: http://dx.doi.org/10.17169/refubium-27010.

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

Council of Science Editors:

Irving KS. Improvement of Global Change Projections for Riverine Benthic Macroinvertebrates. [Thesis]. Freie Universität Berlin; 2020. Available from: http://dx.doi.org/10.17169/refubium-27010

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

University of Vienna

23. Prillinger, Klaus. Assessing the impact of hydropeaking on benthic invertebrates.

Degree: 2017, University of Vienna

URL: http://othes.univie.ac.at/48094/

►

Der Betrieb von Speicherkraftwerken führt zu häufigen Abflussschwankungen (Schwall) in Flussabschnitten unterhalb der Kraftwerke. Schwall verändert die hydraulischen Bedingungen und beeinträchtigt auch physikalische und chemische… (more)

▼

Der Betrieb von Speicherkraftwerken führt zu häufigen Abflussschwankungen (Schwall) in Flussabschnitten unterhalb der Kraftwerke. Schwall verändert die hydraulischen Bedingungen und beeinträchtigt auch physikalische und chemische Parameter, wie zum Beispiel die Sauerstoffkonzentration. Obwohl die Drift eine wichtige Rolle in der Lebensweise von benthischen Invertebraten einnimmt, führen Veränderungen des natürlichen Abflussgeschehens zu einer Zunahme der Katastrophendrift und führen somit zu reduzierten Biomassen in betroffenen Fließgewässern. In Versuchsrinnen in Lunz am See (Österreich) wurde ein künstlicher Schwall induziert um das Driftverhalten von Makrozoobenthos (MZB) zu untersuchen. Diese Arbeit befasst sich mit saisonalen Unterschieden des Driftverhaltens von MZB während Schwallereignissen. In zwei verschiedenen Saisonen (Frühling und Herbst) wurde das durch Schwall verursachte Driftverhalten von aquatischen Evertebraten untersucht. Die gemessenen Driftraten waren im Herbst höher als im Frühling. Taxa der Köcherfliegen und der Steinfliegen zeigten einen deutlichen Zusammenhang der Driftraten und der Körpergröße, da vor allem kleine Individuen im Herbst gefunden wurden und diese stärker von der Schwalleinwirkung betroffen waren. Eintagsfliegen und Zweiflügler kamen hingegen im Frühling in höherer Dichte vor, wobei erstere höhere Driftraten im Herbst zeigten, Dipteren jedoch im Frühling. Grund dafür sind die unterschiedlichen Lebenszyklen verschiedener Arten, da sie unterschiedliche Reproduktionsstrategien verfolgen. Die Habitatpräferenz der unterschiedlichen Arten spielt ebenfalls eine wichtige Rolle bei der Driftsenitivität. Schwimmende und linitische Arten die bevorzugt in Bereichen mit langsamer Fließgeschwindigkeit vorkommen, zeigten höhere Driftraten als Arten, die im Interstitial leben.

The operation of storage-power plants leads to irregularly increased runoff (hydropeaking) at flow paths beneath a hydropower plant. Hydropeaking leads to changes in hydraulic conditions and physico-chemical parameters, such as oxygen concentration. Even though drift plays an important role in the life history of benthic invertebrates, hydropeaking leads to increases in catastrophic drift and to a reduction of biomass in affected river stretches. In Lunz am See (Austria) experimental channels (HyTEC) were constructed to simulate hydropeaking and thus investigate the drift of benthic invertebrates following hydraulic stress. In this study, seasonal patterns of macroinvertebrate drift caused by hydropeaking have been investigated. In two different seasons (autumn & spring) the hydropeaking-induced drift of aquatic macroinvertebrates was quantified and analyzed. In general, higher drift rates were detected in autumn than in spring. This especially applied to Trichoptera and Plecoptera, of which small larvae were mainly found in autumn. A strong link between drift rates and larval size could be identified for these groups. Ephemeroptera and Diptera were most abundant in spring. Mayflies…

Subjects/Keywords: 42.93 Limnologie; Schwall / Saisonalität / benthische Wirbellose / Drift; hydropeaking / seasonality / benthic invertebrates / drift

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Prillinger, K. (2017). Assessing the impact of hydropeaking on benthic invertebrates. (Thesis). University of Vienna. Retrieved from http://othes.univie.ac.at/48094/

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):

Prillinger, Klaus. “Assessing the impact of hydropeaking on benthic invertebrates.” 2017. Thesis, University of Vienna. Accessed March 04, 2021. http://othes.univie.ac.at/48094/.

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

MLA Handbook (7^th Edition):

Prillinger, Klaus. “Assessing the impact of hydropeaking on benthic invertebrates.” 2017. Web. 04 Mar 2021.

Vancouver:

Prillinger K. Assessing the impact of hydropeaking on benthic invertebrates. [Internet] [Thesis]. University of Vienna; 2017. [cited 2021 Mar 04]. Available from: http://othes.univie.ac.at/48094/.

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

Council of Science Editors:

Prillinger K. Assessing the impact of hydropeaking on benthic invertebrates. [Thesis]. University of Vienna; 2017. Available from: http://othes.univie.ac.at/48094/

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

University of Southern Mississippi

24. Shakeri, Lennah. Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality.

Degree: MS, Coastal Sciences, Gulf Coast Research Laboratory, 2018, University of Southern Mississippi

URL: https://aquila.usm.edu/masters_theses/347

► Coastal marshes are important nursery habitats for many commercially important invertebrate species, yet these marshes are being lost worldwide at an unprecedented rate due… (more)

Subjects/Keywords: blue crabs; marsh fragmentation; benthic invertebrates; Marine Biology; Terrestrial and Aquatic Ecology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Shakeri, L. (2018). Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality. (Masters Thesis). University of Southern Mississippi. Retrieved from https://aquila.usm.edu/masters_theses/347

Chicago Manual of Style (16^th Edition):

Shakeri, Lennah. “Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality.” 2018. Masters Thesis, University of Southern Mississippi. Accessed March 04, 2021. https://aquila.usm.edu/masters_theses/347.

MLA Handbook (7^th Edition):

Shakeri, Lennah. “Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality.” 2018. Web. 04 Mar 2021.

Vancouver:

Shakeri L. Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality. [Internet] [Masters thesis]. University of Southern Mississippi; 2018. [cited 2021 Mar 04]. Available from: https://aquila.usm.edu/masters_theses/347.

Council of Science Editors:

Shakeri L. Linkages between Marsh Fragmentation, Prey Availability, and Blue Crab (Callinectes sapidus) Abundance and Mortality. [Masters Thesis]. University of Southern Mississippi; 2018. Available from: https://aquila.usm.edu/masters_theses/347

Linköping University

25. Forsman, Hanna. Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?.

Degree: Biology, 2018, Linköping University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144111

►

Grunda, näringsrika sjöar förekommer i två stadier: antingen ett med grumligt vatten och hög biomassa av växtplankton, eller ett med klart vatten och riklig… (more)

▼

Grunda, näringsrika sjöar förekommer i två stadier: antingen ett med grumligt vatten och hög biomassa av växtplankton, eller ett med klart vatten och riklig undervattensvegetation. Det klara stadiet är eftersträvansvärt eftersom det skapar goda förutsättningar för en rad ekosystemtjänster, inklusive vattenkvalitet, rekreation och förutsättningar för biodiversitet. Vid eutrofiering, d v s ökat tillskott av näringsämnen, kvarstår det klara stadiet tills näringsbelastningen blir så hög att sjön övergår till ett grumligt stadium. Sjön Tåkern, i Östergötland, har under de senaste åren blivit alltmer eutrofierad och kalkning av vattnet har diskuterats som en möjlig åtgärd för att bevara det klara stadiet som sjön numera befinner sig i. Undersökningar om kalkning av eutrofierade sjöar har gjorts tidigare, men det har varit få studier av effekterna av kalkning på undervattensvegetation, substratlevande djur och påväxtalger. För att undersöka detta, gjordes ett fält- och ett laboratorieexperiment inriktade på effekter på överlevnad av vattengråsugga, Asellus aquaticus, fysiologisk status (halten klorofyll a) i kransalgen Chara globularis och tillväxt av nyetablerade påväxtalger i sjön Tåkern. Resultaten visar att A. aquaticus hade lägre överlevnad efter kalkning till pH 10 i laboratorieexperiment, men i fältförsöket hade kalkning till detta pH inte någon inverkan. C. globularis hade en högre halt klorofyll a efter kalkning till pH 10 i laboratorieexperimentet, men i fältexperimentet hade kalkning ingen effekt på halten klorofyll a. Påväxtalger hade en lägre tillväxthastighet efter kalkning i fältexperimentet. Slutsatsen är att kalkning kan vara en metod för att motverka eutrofiering av sjön Tåkern. Några inkonsekvenser mellan mesokosm- och laborationsresultaten tyder på att fler studier behövs göras för att undersöka hur kalkning till pH 10 påverkar bentiska organismer.

Shallow, nutrient-rich lakes can occur in two alternative states: either a turbid water state with high biomass of phytoplankton, or a clear water state with abundant submerged vegetation. The clear water state is worth striving for because it creates good conditions for a range of ecosystem services and biodiversity. Lake Tåkern, Östergötland, has in recent years become increasingly eutrophic and liming has been discussed as a method to reduce the phosphorus level and maintain, or trigger a shift to, the clear water state. Investigations regarding the effects of liming of eutrophic lakes on phosphorus level and plankton have been performed in the past, but few studies have examined the effects on submerged vegetation, benthic invertebrates and periphyton. To study this, a field and a laboratory experiment were performed to examine how liming to pH 10 affects survival of the benthic invertebrate Asellus aquaticus, the chlorophyll a content in the stonewort Chara globularis and growth of periphyton. Survival of A. aquaticus was not affected in a field mesocosm…

Subjects/Keywords: Benthic invertebrates; Eutrophication; Liming; Mesocosm study; Periphyton; Shallow lakes; Submerged vegetation; Ecology; Ekologi

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Forsman, H. (2018). Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?. (Thesis). Linköping University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144111

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):

Forsman, Hanna. “Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?.” 2018. Thesis, Linköping University. Accessed March 04, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144111.

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

MLA Handbook (7^th Edition):

Forsman, Hanna. “Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?.” 2018. Web. 04 Mar 2021.

Vancouver:

Forsman H. Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?. [Internet] [Thesis]. Linköping University; 2018. [cited 2021 Mar 04]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144111.

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

Council of Science Editors:

Forsman H. Hur påverkas kransalgen Chara globularis, vattengråsugga, Asellus aquaticus och påväxtalger av kalkning i en eutrof sjö?. [Thesis]. Linköping University; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-144111

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

University of Victoria

26. Dinn, Pamela. Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls.

Degree: School of Earth and Ocean Sciences, 2011, University of Victoria

URL: http://hdl.handle.net/1828/3706

► The fate and bioaccumulation of a contaminant entering the marine environment through wastewater outfalls depends on the contaminant’s persistence and affinity for particles. The physical… (more)

▼ The fate and bioaccumulation of a contaminant entering the marine environment through wastewater outfalls depends on the contaminant’s persistence and affinity for particles. The physical characteristics of the receiving environment, e.g. current velocity, sedimentary processes, and the availability of organic carbon are also important. However, these latter effects are not usually evaluated quantitatively. This thesis investigates the near-field accumulation in sediment and biota of particle-reactive polybrominated diphenyl ethers (PBDEs) entering coastal waters via two municipal outfalls: one discharging into a high energy, low sedimentation environment near Victoria, B.C., Canada; the other into a low energy, high sedimentation environment near Vancouver, B.C. We used 210Pb profiles in sediment box cores together with an advection-diffusion model to determine surface mixing and sedimentation rates, and to model the depositional history of PBDEs at these sites. A particularly important finding of this study is that the very high energy environment to the southeast of the Victoria outfall accumulates PBDEs despite not having net sediment accumulation. Although the discharge of PBDEs was much lower from the Victoria outfall than from Vancouver, some sediment PBDE concentrations were higher near Victoria. Most PBDEs were dispersed beyond the near-field at both sites, but a greater proportion was captured in the sediment near the Vancouver outfall where rapid burial was facilitated by inorganic sediment supplied from the nearby Fraser River. Clearly, treating wastewater to the same level, regardless of local oceanographic conditions, will not result in a uniform environmental footprint. Total PBDE concentrations in benthic invertebrate communities were higher near Vancouver than Victoria, despite lower concentrations in sediments, and correlated with organic carbon normalized sediment concentrations. Principal Components Analysis suggested uptake of individual PBDE congeners was determined by sediment properties (TOC, grain size), whereas PCB congener uptake was governed by physico-chemical properties (octanol-water partitioning coefficient). Our results suggest that sediment quality guidelines for PBDEs and likely PCBs may be more relevant if corrected to TOC content in sediment. In addition, where enhanced wastewater treatment increases the ratio of PBDEs to particulate organic carbon in effluent, nearfield benthic invertebrates may face increased PBDE accumulation. This underlines the need for source control of persistent organic contaminants, which cannot be broken down by conventional wastewater treatment. Advisors/Committee Members: Johannessen, Sophia (supervisor), Whiticar, Michael J. (supervisor).

Subjects/Keywords: sewage outfall; municipal; persistent contaminant; polybrominated diphenyl ethers; polychlorinated biphenyls; marine benthic invertebrates; sediment core

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Dinn, P. (2011). Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls. (Masters Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/3706

Chicago Manual of Style (16^th Edition):

Dinn, Pamela. “Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls.” 2011. Masters Thesis, University of Victoria. Accessed March 04, 2021. http://hdl.handle.net/1828/3706.

MLA Handbook (7^th Edition):

Dinn, Pamela. “Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls.” 2011. Web. 04 Mar 2021.

Vancouver:

Dinn P. Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls. [Internet] [Masters thesis]. University of Victoria; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1828/3706.

Council of Science Editors:

Dinn P. Receiving environment shapes transport and bioaccumulation of polybrominated diphenyl ethers near two submarine municipal outfalls. [Masters Thesis]. University of Victoria; 2011. Available from: http://hdl.handle.net/1828/3706

Utah State University

27. Hill, Ryan A. Modeling USA stream temperatures for stream biodiversity and climate change assessments.

Degree: PhD, Watershed Sciences, 2013, Utah State University

URL: https://digitalcommons.usu.edu/etd/1721

► Stream temperature (ST) is a primary determinant of individual stream species distributions and community composition. Moreover, thermal modifications associated with urbanization, agriculture, reservoirs, and… (more)

▼ Stream temperature (ST) is a primary determinant of individual stream species distributions and community composition. Moreover, thermal modifications associated with urbanization, agriculture, reservoirs, and climate change can significantly alter stream ecosystem structure and function. Despite its importance, we lack ST measurements for the vast majority of USA streams. To effectively manage these important systems, we need to understand how STs vary geographically, what the natural (reference) thermal condition of altered streams was, and how STs will respond to climate change. Empirical ST models, if calibrated with physically meaningful predictors, could provide this information. My dissertation objectives were to: (1) develop empirical models that predict reference- and nonreference-condition STs for the conterminous USA, (2) assess how well modeled STs represent measured STs for predicting stream biotic communities, and (3) predict potential climate-related alterations to STs. For objective 1, I used random forest modeling with environmental data from several thousand US Geological Survey sites to model geographic variation in nonreference mean summer, mean winter, and mean annual STs. I used these models to identify thresholds of watershed alteration below which there were negligible effects on ST. With these reference-condition sites, I then built ST models to predict summer, winter, and annual STs that should occur in the absence of human-related alteration (r2 = 0.87, 0.89, 0.95, respectively). To meet objective 2, I compared how well modeled and measured ST predicted stream benthic invertebrate composition across 92 streams. I also compared predicted and measured STs for estimating taxon-specific thermal optima. Modeled and measured STs performed equally well in both predicting invertebrate composition and estimating taxon-specific thermal optima (r2 between observation and model-derived optima = 0.97). For objective 3, I first showed that predicted and measured ST responded similarly to historical variation in air temperatures. I then used downscaled climate projections to predict that summer, winter, and annual STs will warm by 1.6 °C - 1.7 °C on average by 2099. Finally, I used additional modeling to identify initial stream and watershed conditions (i.e., low heat loss rates and small base-flow index) most strongly associated with ST vulnerability to climate change. Advisors/Committee Members: Charles P. Hawkins, D. Richard Cutler, David G. Tarboton, ;.

Subjects/Keywords: Benthic invertebrates; bioassessment; climate change; modeling; random forest; stream temperature; Life Sciences; Other Life Sciences

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Hill, R. A. (2013). Modeling USA stream temperatures for stream biodiversity and climate change assessments. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1721

Chicago Manual of Style (16^th Edition):

Hill, Ryan A. “Modeling USA stream temperatures for stream biodiversity and climate change assessments.” 2013. Doctoral Dissertation, Utah State University. Accessed March 04, 2021. https://digitalcommons.usu.edu/etd/1721.

MLA Handbook (7^th Edition):

Hill, Ryan A. “Modeling USA stream temperatures for stream biodiversity and climate change assessments.” 2013. Web. 04 Mar 2021.

Vancouver:

Hill RA. Modeling USA stream temperatures for stream biodiversity and climate change assessments. [Internet] [Doctoral dissertation]. Utah State University; 2013. [cited 2021 Mar 04]. Available from: https://digitalcommons.usu.edu/etd/1721.

Council of Science Editors:

Hill RA. Modeling USA stream temperatures for stream biodiversity and climate change assessments. [Doctoral Dissertation]. Utah State University; 2013. Available from: https://digitalcommons.usu.edu/etd/1721

Georgia State University

28. Mayoral, Helen. Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians.

Degree: MA, Geosciences, 2011, Georgia State University

URL: https://scholarworks.gsu.edu/geosciences_theses/31

► To determine the relationship between the abundance and density of benthic invertebrates, and the critical shear stress of individual grain sizes, a reach along… (more)

Subjects/Keywords: Benthic invertebrates; Critical Shields stress; Invertebrate abundance; Invertebrate density; Embeddedness; Organism-substrate relationships; Geography; Geology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Mayoral, H. (2011). Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians. (Thesis). Georgia State University. Retrieved from https://scholarworks.gsu.edu/geosciences_theses/31

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):

Mayoral, Helen. “Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians.” 2011. Thesis, Georgia State University. Accessed March 04, 2021. https://scholarworks.gsu.edu/geosciences_theses/31.

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

MLA Handbook (7^th Edition):

Mayoral, Helen. “Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians.” 2011. Web. 04 Mar 2021.

Vancouver:

Mayoral H. Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians. [Internet] [Thesis]. Georgia State University; 2011. [cited 2021 Mar 04]. Available from: https://scholarworks.gsu.edu/geosciences_theses/31.

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

Council of Science Editors:

Mayoral H. Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians. [Thesis]. Georgia State University; 2011. Available from: https://scholarworks.gsu.edu/geosciences_theses/31

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

University of Kentucky

29. Strohm, Christopher J. CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS.

Degree: 2014, University of Kentucky

URL: https://uknowledge.uky.edu/entomology_etds/8

► Hemlock woolly adelgid is an invasive herbivore causing extensive mortality of eastern hemlock, an important foundation species that provides stable conditions influencing biological communities. Hemlock… (more)

Subjects/Keywords: Tsuga canadensis; Adelges tsugae; riparian canopy; leaf decomposition; benthic invertebrates; Agriculture; Entomology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Strohm, C. J. (2014). CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS. (Masters Thesis). University of Kentucky. Retrieved from https://uknowledge.uky.edu/entomology_etds/8

Chicago Manual of Style (16^th Edition):

Strohm, Christopher J. “CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS.” 2014. Masters Thesis, University of Kentucky. Accessed March 04, 2021. https://uknowledge.uky.edu/entomology_etds/8.

MLA Handbook (7^th Edition):

Strohm, Christopher J. “CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS.” 2014. Web. 04 Mar 2021.

Vancouver:

Strohm CJ. CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS. [Internet] [Masters thesis]. University of Kentucky; 2014. [cited 2021 Mar 04]. Available from: https://uknowledge.uky.edu/entomology_etds/8.

Council of Science Editors:

Strohm CJ. CHANGING LITTER RESOURCES ASSOCIATED WITH HEMLOCK WOOLLY ADELGID INVASION AFFECT BENTHIC COMMUNITIES IN HEADWATER STREAMS. [Masters Thesis]. University of Kentucky; 2014. Available from: https://uknowledge.uky.edu/entomology_etds/8

Swedish University of Agricultural Sciences

30. Gottschalk, Steffi. Benthic diatoms in lakes.

Degree: 2014, Swedish University of Agricultural Sciences

URL: http://pub.epsilon.slu.se/11193/

► In order to protect or improve surface waters ecosystem response to pressures needs to be quantified. Diatoms are frequently used for assessing ecological status in… (more)

▼ In order to protect or improve surface waters ecosystem response to pressures needs to be quantified. Diatoms are frequently used for assessing ecological status in streams and for reconstructing water quality of lakes. However, ecological status assessment of European lakes based on extant diatom assemblages is rare. The overall aim of this thesis is to facilitate the application of benthic diatoms in water quality assessment of boreal lakes, using methods developed for stream assessment. Therefore, I investigated (i) the main environmental drivers of lentic diatom assemblages, (ii) the structural differences between lentic and lotic diatom assemblages (iii) the implications of differences between lake and stream diatom assemblages for assessment, (iv) the power of different aquatic organisms as indicators of nutrient and acidity status in lakes, and (v) ecological thresholds of diatom and phytoplankton assemblage structure along a nutrient gradient in boreal lakes. The major environmental drivers of benthic diatom assemblage composition in boreal lakes were gradients in acidity and nutrient status. In contrast, the distribution of ecological diatom guilds seems to be decoupled from nutrient availability in acidic compared to high pH aquatic systems. Diatom assemblage composition can thus be recommended for ecological status assessment of boreal lakes, whereas species-specific growth morphology and the drivers affecting growth morphology need further study. Most diatom taxa occurred in Swedish lakes and streams, but differences in frequency and abundance among lakes and streams were noted. However, the diatom indices IPS and ACID, developed for streams, responded similarly to nutrient and acidity gradients, respectively, in Swedish lakes and streams and can thus also be recommended for ecological status assessment of lakes. In nutrient poor boreal lakes, both primary producers and primary consumers were correlated with nutrient concentrations. Primary producers, especially diatoms, displayed a stronger response to pH than macro-invertebrates, possibly due to shorter generation times implying faster response. Nutrient thresholds in taxonomic and guild structure of benthic diatom assemblages in boreal lakes were found at low TP concentrations (18-26 μg L⁻¹). However, caution is advised in interpreting the response of some species to nutrients, as pH dependencies might obscure the response of some nutrient sensitive diatom species to TP.

Subjects/Keywords: phytoplankton; bacillariophyceae; lakes; rivers; invertebrates; indicator organisms; acidity; nutrient availability; eutrophication; benthic environment; benthic diatoms; lakes; environmental drivers; streams; indicators; phytoplankton; littoral macroinvertebrates; efficacy; nutrient thresholds

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Gottschalk, S. (2014). Benthic diatoms in lakes. (Doctoral Dissertation). Swedish University of Agricultural Sciences. Retrieved from http://pub.epsilon.slu.se/11193/

Chicago Manual of Style (16^th Edition):

Gottschalk, Steffi. “Benthic diatoms in lakes.” 2014. Doctoral Dissertation, Swedish University of Agricultural Sciences. Accessed March 04, 2021. http://pub.epsilon.slu.se/11193/.

MLA Handbook (7^th Edition):

Gottschalk, Steffi. “Benthic diatoms in lakes.” 2014. Web. 04 Mar 2021.

Vancouver:

Gottschalk S. Benthic diatoms in lakes. [Internet] [Doctoral dissertation]. Swedish University of Agricultural Sciences; 2014. [cited 2021 Mar 04]. Available from: http://pub.epsilon.slu.se/11193/.

Council of Science Editors:

Gottschalk S. Benthic diatoms in lakes. [Doctoral Dissertation]. Swedish University of Agricultural Sciences; 2014. Available from: http://pub.epsilon.slu.se/11193/

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations