+publisher:"University of Florida" +contributor:("Munoz-Carpena, Rafael")

University of Florida

1. Beneche, Joseph Antoine. Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment.

Degree: MS, Agricultural and Biological Engineering, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045456

► This study aimed at simulating the hydrological behavior ofthe Grise River watershed which is one of the most vulnerable watersheds inHaiti. It is mountainous in… (more)

Subjects/Keywords: Hydraulic conductivity; Hydrological modeling; Hydrology; Modeling; Rain; Sensitivity analysis; Simulations; Soils; Transmissivity; Watersheds; analysis – flood – modelling – sensitivity – uncertainty – watershed

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APA (6^th Edition):

Beneche, J. A. (2013). Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045456

Chicago Manual of Style (16^th Edition):

Beneche, Joseph Antoine. “Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment.” 2013. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045456.

MLA Handbook (7^th Edition):

Beneche, Joseph Antoine. “Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment.” 2013. Web. 17 Apr 2021.

Vancouver:

Beneche JA. Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment. [Internet] [Masters thesis]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045456.

Council of Science Editors:

Beneche JA. Sensitivity and Uncertainty Analysis of Topmodel for the Hydrological Simulation of the Grise River Catchment. [Masters Thesis]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045456

University of Florida

2. Vazquez, Kathleen M. Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations.

Degree: MS, Agricultural and Biological Engineering, 2017, University of Florida

URL: https://ufdc.ufl.edu/UFE0051914

► Irrigation water is considered a major pathway to fresh produce for food-borne illness related pathogens. The Food Safety Modernization Act (FSMA) specifies sampling-based methods using… (more)

Subjects/Keywords: agricultural-water – food-safety – modeling – water – water-quality

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APA (6^th Edition):

Vazquez, K. M. (2017). Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0051914

Chicago Manual of Style (16^th Edition):

Vazquez, Kathleen M. “Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations.” 2017. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0051914.

MLA Handbook (7^th Edition):

Vazquez, Kathleen M. “Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations.” 2017. Web. 17 Apr 2021.

Vancouver:

Vazquez KM. Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations. [Internet] [Masters thesis]. University of Florida; 2017. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0051914.

Council of Science Editors:

Vazquez KM. Statistical and Mechanistic Analysis of Bacterial Water Quality to Evaluate and Inform Food Safety Agricultural Water Regulations. [Masters Thesis]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0051914

University of Florida

3. Chung, Jaeshik. Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills.

Degree: PhD, Environmental Engineering Sciences, 2018, University of Florida

URL: https://ufdc.ufl.edu/UFE0052209

► A long-term behavior of redox-facilitated iron plume migration from landfill subjected to both spatial and temporal uncertainties are investigated with conceptual modeling frameworks to minimize… (more)

Subjects/Keywords: contaminant – fvm – iron – landfill – redox – toughreact – transport – tst

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APA (6^th Edition):

Chung, J. (2018). Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0052209

Chicago Manual of Style (16^th Edition):

Chung, Jaeshik. “Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills.” 2018. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0052209.

MLA Handbook (7^th Edition):

Chung, Jaeshik. “Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills.” 2018. Web. 17 Apr 2021.

Vancouver:

Chung J. Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills. [Internet] [Doctoral dissertation]. University of Florida; 2018. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0052209.

Council of Science Editors:

Chung J. Effects of Spatiotemporal Boundary Variation in Contaminant Transport Phenomena of Groundwater Resources near Landfills. [Doctoral Dissertation]. University of Florida; 2018. Available from: https://ufdc.ufl.edu/UFE0052209

University of Florida

4. Tian, Yuan. Transport and Environmental Applications of Carbon Nanotubes in Porous Media.

Degree: PhD, Agricultural and Biological Engineering, 2012, University of Florida

URL: https://ufdc.ufl.edu/UFE0044405

► There are increasing concerns over the environmental impact and health risks of carbon nanotubes (CNTs) because they may be released into the environment, such as… (more)

▼ There are increasing concerns over the environmental impact and health risks of carbon nanotubes (CNTs) because they may be released into the environment, such as soil and groundwater systems. This Ph.D. dissertation systematically investigated the fate and transport of CNTs in porous media as well as the applications of CNTs in wastewater treatment to remove heavy metal and antibiotic pollutants. Laboratory columns packed with quartz sand and glass beads showed that deposition of CNTs in saturated porous media was very sensitive to solution chemistry. More CNTs were found to be trapped in the primary minimum. Under unfavorable conditions, weak associated CNTs in the secondary minimum may be transferred into the primary minimum due to the effect of hydrodynamic force and/or local favorable sites associated with surface heterogeneity. Dispersion/solubilization methods showed great influence on the stability and mobility of CNTs. Humic acid dispersion granted higher mobility to CNTs compared with other surface modification methods. Reductions in moisture contents showed greater influence on the retention of surface oxidized CNTs. This is possibly due to CNT deposition on the air-water interface and through film straining. Combined mechanisms could be responsible for the retention and transport of CNTs in unsaturated porous media. Retention and transport of functionalized CNTs in natural sand porous media were mainly controlled by strong surface deposition through the electrostatic and/or hydrogen-bonding attractions between surface function groups of the CNTs and metal oxyhydroxide impurities on the sand surfaces. Fixed-bed columns packed with functionalized multi-walled CNTs and natural sand were used in laboratory to evaluate and optimize the applications of CNTs in removing heavy metals and antibiotics from water. They significantly improved the fixed-bed’s filtering efficiency of Pb2+ and Cu2+ by 55%-75% and 31%-57%, respectively. The fixed bed column experiments also showed that pH could be a key factor that affects the removal of antibiotics by controlling the protonation of antibiotics and surface charge of the carboxyl and hydroxyl functional groups on CNT surfaces. The column removal efficiency of antibiotics decreased only slightly after regenerations, suggesting the CNT-sand columns can be efficiently used and regenerated to remove contaminants from water. ( en ) Advisors/Committee Members: Gao, Bin (committee chair), Bonzongo, Jean-Claud (committee member), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Ziegler, Kirk (committee member).

Subjects/Keywords: Adsorption; Antibiotics; Carbon nanotubes; Colloids; Environmental technology; Moisture content; Nanoparticles; pH; Sand; Water transportation; attachment – breakthrough – colloids – dlvo – metals – nanomaterials – sulfonamide – treatment – wastewater

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APA (6^th Edition):

Tian, Y. (2012). Transport and Environmental Applications of Carbon Nanotubes in Porous Media. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0044405

Chicago Manual of Style (16^th Edition):

Tian, Yuan. “Transport and Environmental Applications of Carbon Nanotubes in Porous Media.” 2012. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0044405.

MLA Handbook (7^th Edition):

Tian, Yuan. “Transport and Environmental Applications of Carbon Nanotubes in Porous Media.” 2012. Web. 17 Apr 2021.

Vancouver:

Tian Y. Transport and Environmental Applications of Carbon Nanotubes in Porous Media. [Internet] [Doctoral dissertation]. University of Florida; 2012. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0044405.

Council of Science Editors:

Tian Y. Transport and Environmental Applications of Carbon Nanotubes in Porous Media. [Doctoral Dissertation]. University of Florida; 2012. Available from: https://ufdc.ufl.edu/UFE0044405

University of Florida

5. Maleski, Jerome J. Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins.

Degree: PhD, Agricultural and Biological Engineering, 2016, University of Florida

URL: https://ufdc.ufl.edu/UFE0049493

► Improved seasonal climate forecasts depend upon a thorough understanding of the historical climate trends and events as well as the synoptic climatology for the study… (more)

Subjects/Keywords: Causality; Climate change; Climate models; Climatic zones; Climatology; Drought; Heating; Precipitation; Rain; Water temperature; causality – climate – enso – granger – hydrology – teleconnections – trends; City of Apalachicola ( local )

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APA (6^th Edition):

Maleski, J. J. (2016). Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0049493

Chicago Manual of Style (16^th Edition):

Maleski, Jerome J. “Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins.” 2016. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0049493.

MLA Handbook (7^th Edition):

Maleski, Jerome J. “Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins.” 2016. Web. 17 Apr 2021.

Vancouver:

Maleski JJ. Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0049493.

Council of Science Editors:

Maleski JJ. Hydrologic Trends and Predictions for the Alabama-Coosa-Tallapoosa and Apalachicola-Chattahoochee-Flint River Basins. [Doctoral Dissertation]. University of Florida; 2016. Available from: https://ufdc.ufl.edu/UFE0049493

University of Florida

6. Henson, Wesley R. Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer.

Degree: PhD, Agricultural and Biological Engineering, 2016, University of Florida

URL: https://ufdc.ufl.edu/UFE0050248

► The Upper Floridan Aquifer is hydrogeologically complex; limestone dissolution has led to vertical and horizontal preferential flow paths. Aquifer nitrate contamination is of concern and… (more)

Subjects/Keywords: Aquifers; Groundwater; Hydraulics; Karsts; Mechanical springs; Nitrates; Nitrogen; Preferential flow; Solutes; Tracer bullets; conduits – denitrification – dnra – groundwater – ichetucknee – karst – nitrate – silver; Ichetucknee Springs ( local )

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APA (6^th Edition):

Henson, W. R. (2016). Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0050248

Chicago Manual of Style (16^th Edition):

Henson, Wesley R. “Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer.” 2016. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0050248.

MLA Handbook (7^th Edition):

Henson, Wesley R. “Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer.” 2016. Web. 17 Apr 2021.

Vancouver:

Henson WR. Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0050248.

Council of Science Editors:

Henson WR. Hydrogeologic and Biogeochemical Heterogeneity across Spatiotemporal Scales Fluxes, Flowpaths and Nitrogen Transformations in an Eogenetic Karst Aquifer. [Doctoral Dissertation]. University of Florida; 2016. Available from: https://ufdc.ufl.edu/UFE0050248

University of Florida

7. Klarenberg, Geraldine. Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon.

Degree: PhD, Agricultural and Biological Engineering, 2017, University of Florida

URL: https://ufdc.ufl.edu/UFE0051849

► Infrastructure development, specifically road construction, contributes socio-economic benefits to society worldwide. However, detrimental environmental effects of road construction have been documented, most notably increased deforestation.… (more)

Subjects/Keywords: amazon – roads – timeseries – vegetation

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APA (6^th Edition):

Klarenberg, G. (2017). Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0051849

Chicago Manual of Style (16^th Edition):

Klarenberg, Geraldine. “Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon.” 2017. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0051849.

MLA Handbook (7^th Edition):

Klarenberg, Geraldine. “Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon.” 2017. Web. 17 Apr 2021.

Vancouver:

Klarenberg G. Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon. [Internet] [Doctoral dissertation]. University of Florida; 2017. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0051849.

Council of Science Editors:

Klarenberg G. Hidden Disturbance in Regional Vegetation Dynamics from Road Paving in a Coupled Natural and Human System A Case Study from the Southwest Amazon. [Doctoral Dissertation]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0051849

University of Florida

8. Srivastava, Vibhava. Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model.

Degree: PhD, Agricultural and Biological Engineering, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045666

► This dissertation documents the first implementation of an integrated transient 3D surface water-groundwater-land surface process model, ParFlow. CLM, to evaluate the interacting geologic, climatic and… (more)

▼ This dissertation documents the first implementation of an integrated transient 3D surface water-groundwater-land surface process model, ParFlow. CLM, to evaluate the interacting geologic, climatic and vegetative controls on water budget components and streamflow generation processes over the Santa Fe River Basin in North Central Florida. Model predictions indicate that evapotranspiration (ET) is the most important water balance component in the basin comprising 77% of rainfall. Geologic conditions and vegetative properties were found to exert primary control on the spatial variability of streamflow generation processes in the basin through their influence on the balance between rainfall, ET, runoff and infiltration processes. Climatic variability was found to provide primary control on the temporal variability of streamflow generation processes. Model predictions indicate that in the upper basin more than 95% of streamflow is generated by recent near-stream rainfall. In contrast, in the lower basin the majority of streamflow is contributed by the Upper Floridan Aquifer, with the fraction of subsurface flow averaging approximately 77% at the outlet of basin. A global sensitivity analysis of the model revealed that the permeability of the Intermediate Aquifer System is the most influential factor driving hydrologic responsethroughout the SFRB. Particle tracking experiments predicted that the median age of streamflow in the upper basin ranges from approximately 1 day at the peak of storm hydrographs to approximately 7 days at the end of stormflow recession,with travel time distributions that vary over time but are generally well-fit with log-normal distributions at the peak of the storm hydrograph. The median age of subsurface contributions to streamflow in the lower portion of the basin was predicted to be approximately 17 years, and the travel time distribution for the subsurface contribution is well-fit by a gamma distribution showing fractal properties that do not vary significantly over time. The fraction of new stormwater versus old groundwater in the streamflow in the unconfined region, and thus the shape of the total streamflow travel time distribution, varies as a function antecedent conditions, storm magnitude, time during the storm, and assumptions regarding the contrast in hydraulic conductivity between high permeability zones and the porous matrix. ( en ) Advisors/Committee Members: Graham, Wendy Dimbero (committee chair), Martin, Jonathan Bowman (committee member), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Cohen, Matthew J (committee member), Annable, Michael D (committee member), Maxwell, Reed M (committee member).

Subjects/Keywords: Aquifers; Groundwater; Hydraulic conductivity; Hydrological modeling; Modeling; Parametric models; Rain; Storms; Stormwater; Stream flow; integrated – model; Greater Orlando ( local )

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APA (6^th Edition):

Srivastava, V. (2013). Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045666

Chicago Manual of Style (16^th Edition):

Srivastava, Vibhava. “Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045666.

MLA Handbook (7^th Edition):

Srivastava, Vibhava. “Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model.” 2013. Web. 17 Apr 2021.

Vancouver:

Srivastava V. Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045666.

Council of Science Editors:

Srivastava V. Geologic, Vegetative and Climatic Controls on Coupled Hydrologic Processes in a Complex River Basin Lessons Learned From a Fully Integrated Hydrologic Model. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045666

University of Florida

9. Wu, Lei. Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling.

Degree: PhD, Agricultural and Biological Engineering, 2013, University of Florida

URL: https://ufdc.ufl.edu/UFE0045346

► A thorough understanding of filtration andtransport of colloidal contaminants in aquatic environment is of greatimportance to many environmental and biological processes. However, littleresearch has been… (more)

▼ A thorough understanding of filtration andtransport of colloidal contaminants in aquatic environment is of greatimportance to many environmental and biological processes. However, littleresearch has been conducted to investigate the transport of colloidal particlesthrough emergent vegetation in overland flow. In this work, a series ofsystemic laboratory experiments were conducted to measure the single-stemcontact efficiency (?0) and attachment efficiency (a) of colloid capture by asimulated plant stem in laminar lateral flow. The results showed that existingtheoretical and empirical models of colloid contact and attachment efficiencyfor porous media were found to fall short in describing the colloid filtrationby dense vegetation system in overland flow. New dimensionless equations ofsingle-stem efficiencies were developed to predict colloid filtration by densevegetation with reasonable accuracy. Except colloidal particles, theever-increasing use of engineered nanomaterials (e.g. carbon nanotubes (CNTs))will lead to heightened levels of these materials in the environment. CNTsaggregation and deposition behavior will dictate its transport potential andthus the environmental fate and potential ecotoxicological impacts of thesematerials. However, the unique properties of CNTs proposed challenges inexperimentally and theoretically quantifying its deposition and aggregation inthe environment. The surface element integration (SEI) technique was coupledwith the DLVO theory to determine the orientation-dependent interaction energybetween CNTs and an infinite isotropic planar surface. For the first time,analytical formula was developed to accurately describe the interaction betweennot only pristine but also surface charged CNTs and planar surfaces witharbitrary rotation angles. The new analytical expressions presented in thiswork can be used as a robust tool to describe the DLVO interaction between CNTsand planar surfaces under various conditions and thus to assist the design andapplication of CNT-based products. Normal 0 false false false EN-US ZH-CN X-NONE /* Style Definitions */ table.MsoNormalTable{mso-style-name:"Table Normal";mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-parent:"";mso-padding-alt:0in 5.4pt 0in 5.4pt;mso-para-margin:0in;mso-para-margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:10.0pt;font-family:"Times New Roman","serif";} ( en ) Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Ziegler, Kirk Jeremy (committee member), Gao, Bin (committee member), Bonzongo, Jean-Claude J (committee member), Fox, Garey A (committee member).

Subjects/Keywords: Carbon nanotubes; Colloids; Diameters; Electrokinetics; Filtration; Flow velocity; Overland flow; Particle diffusion; Stems; Vegetation; attachment – cnts – colloid – deposition – filtration – transport – vegetation

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APA (6^th Edition):

Wu, L. (2013). Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045346

Chicago Manual of Style (16^th Edition):

Wu, Lei. “Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling.” 2013. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0045346.

MLA Handbook (7^th Edition):

Wu, Lei. “Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling.” 2013. Web. 17 Apr 2021.

Vancouver:

Wu L. Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0045346.

Council of Science Editors:

Wu L. Filtration and Transport of Colloids and Nanopaticles in Dense Emergent Vegetation Theory, Experiments, and Modeling. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045346

10. Alonso, Alice. Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica.

Degree: PhD, Agricultural and Biological Engineering, 2017, University of Florida

URL: https://ufdc.ufl.edu/UFE0050678

► The 5,412 km2 Tempisque watershed in NW Costa Rica was significantly transformed in the late 1970s through the addition of an inter-basin water transfer for… (more)

▼ The 5,412 km2 Tempisque watershed in NW Costa Rica was significantly transformed in the late 1970s through the addition of an inter-basin water transfer for hydropower generation and a large irrigation district. These changes ultimately impacted the Palo Verde National Park (PVNP) coastal wetland designated as a Ramsar site of international importance. This dissertation addresses the importance of advancing the knowledge of the governing processes, interactions, and long-term spatiotemporal dynamics of coupled human and natural systems (CNHs) such as the Tempisque watershed and PVNP to inform management strategies that reconcile the human and natural needs. We compiled a novel long-term public database of hydrological, meteorological, and land cover data for the watershed and the PVNP wetland. We showed that the combination of the recent open-access data policy for pre-processed satellite archives such as Landsat and MODIS, the new cloud-base Google Earth Engine (GEE) platform, and affordable field monitoring sensors generates unprecedented opportunities to readily build custom and high-frequency long-term time series data to document changing ecosystem dynamics in CNHs studies. To examine land cover history, we reconstructed aggregated Normalized Difference Vegetation Index (NDVI) monthly time series from Landsat and MODIS imagery with GEE and detected an increased vegetation greening in the entire watershed and wetland. We used our ground monitored water level data to define a spectral index for wetland hydric status detection, and used it to reconstruct a 2000-2016 wetland hydroperiod biweekly time series from MODIS images. The outcomes allowed a novel and important insight into the PVNP wetland hydrology and its connections with the surrounding rivers and agricultural district. Finally, we hypothesized and found strong support for the theory that the detected long-term decrease in the Tempisque river discharge caused by excessive water withdrawal leads to an increased flooding in the wetland. River discharge attenuates the tidal cycle and thereof reduces the frequency of tidal flooding. The discovery of this relationship has important implications for the PVNP wetland and many coastal systems worldwide. The results of this dissertation and recommendations for further studies are pioneering a larger research effort to untangle this CNHs complex processes and inform sustainable management. ( en ) Advisors/Committee Members: CARPENA%2CRAFAEL%22%29&pagesize-30">MUNOZ-CARPENA,RAFAEL (committee chair), HUFFAKER,RAY G (committee member), VALLE-LEVINSON,ARNOLDO (committee member), KAPLAN,DAVID A (committee member), MURCIA,CAROLINA (committee member), VANCLOOSTER,MARNIK (committee member).

Subjects/Keywords: coastalwetland – costarica – coupledhumannaturalsystems – data – dynamics – hydrology – hydroperiod – ndvi – paloverdenationalpark – remotesensing – tidalrivers – wetland

…111 13 Abstract of Dissertation Presented to the Graduate School of the University of… …Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy NOVEL…

10 more images…

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APA (6^th Edition):

Alonso, A. (2017). Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0050678

Chicago Manual of Style (16^th Edition):

Alonso, Alice. “Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica.” 2017. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0050678.

MLA Handbook (7^th Edition):

Alonso, Alice. “Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica.” 2017. Web. 17 Apr 2021.

Vancouver:

Alonso A. Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica. [Internet] [Doctoral dissertation]. University of Florida; 2017. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0050678.

Council of Science Editors:

Alonso A. Novel Quantification of Long-Term Hydrological and Landscape Spatiotemporal Dynamics of Coupled Natural Human Systems the Case Study of The Tempisque-Palo Verde National Park Coastal Wetland, Costa Rica. [Doctoral Dissertation]. University of Florida; 2017. Available from: https://ufdc.ufl.edu/UFE0050678

University of Florida

11. Femminella, Kristen. Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil.

Degree: M.E., Agricultural and Biological Engineering, 2008, University of Florida

URL: https://ufdc.ufl.edu/UFE0022365

► As competition for freshwater continues to rise in the state of Florida, there is a growing need for improvements in agricultural irrigation efficiency. Automated irrigation… (more)

▼ As competition for freshwater continues to rise in the state of Florida, there is a growing need for improvements in agricultural irrigation efficiency. Automated irrigation systems using soil moisture sensors can improve efficiencies by applying irrigation water based on the soil moisture content of the plant root zone. Irrigation is initiated or bypassed based on the sensor reading of soil moisture content. This project was intended to investigate the effects of soil moisture sensor based irrigation on bell peppers grown on drip irrigated, plastic mulched raised beds by analyzing cumulative irrigation water, fruit yield, deep drainage, and sensor performance. Crop coefficients, Kc initial, Kc mid, and Kc late were estimated using the soil water balance equation. The study was conducted during four growing seasons in Citra, FL at the University of Florida Plant Science and Research Education Unit. Five irrigation treatments, four SMS based and one time based, were initiated each season. The SMS treatments reduced irrigation water up to 70% compared to the time based treatment and showed increases in irrigation water use efficiency (IWUE) up to 300%. Drainage volumes were also reduced from 36-92% during the four seasons. The SMS treatments with low threshold settings (8-10%) showed higher water savings than treatments with higher threshold settings (12%). Sensor performance was determined by analyzing the number of bypassed/initiated events and the soil moisture content at which each event was initiated. Treatments with the lowest threshold setting, 8%, bypassed up to 87% of the scheduled irrigation events and initiated irrigation at the lowest soil moisture content compared with other treatments. A soil water balance equation was applied to estimate the crop water demand, ETc, which, in turn, was used to estimate local crop coefficients, Kc, for bell pepper. These estimates, Kc mid = 0.93 and Kc late = 0.71, closely approximated University of Florida IFAS recommended values, as well as other values estimated for drip irrigated, plastic mulched vegetables. ( en ) Advisors/Committee Members: Dukes, Michael D. (committee chair), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Scholberg, Johannes M. (committee member).

Subjects/Keywords: Bodies of water; Irrigation; Irrigation drainage; Irrigation water; Peppers; Rain; Sensors; Soil moisture; Soil water content; Water treatment; coefficient, crop, drip, irrigation, soil, vegetables; City of Gainesville ( local )

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

APA (6^th Edition):

Femminella, K. (2008). Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0022365

Chicago Manual of Style (16^th Edition):

Femminella, Kristen. “Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil.” 2008. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0022365.

MLA Handbook (7^th Edition):

Femminella, Kristen. “Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil.” 2008. Web. 17 Apr 2021.

Vancouver:

Femminella K. Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil. [Internet] [Masters thesis]. University of Florida; 2008. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0022365.

Council of Science Editors:

Femminella K. Effects of Soil Moisture Sensor Based Irrigation on Drip Irrigated Bell Peppers Grown on Sandy Soil. [Masters Thesis]. University of Florida; 2008. Available from: https://ufdc.ufl.edu/UFE0022365

University of Florida

12. Yu,Congrong. Colloid Transport in Surface Runoff through Dense Vegetation.

Degree: PhD, Agricultural and Biological Engineering, 2011, University of Florida

URL: https://ufdc.ufl.edu/UFE0043275

► Colloids are widely distributed in the aquatic environment, both in groundwater and surface water. The mechanisms related to colloid transport in porous media are intensively… (more)

▼ Colloids are widely distributed in the aquatic environment, both in groundwater and surface water. The mechanisms related to colloid transport in porous media are intensively investigated because colloids can facilitate contaminant migration in soils and groundwater. However, the migration of colloids in overland flow is not clear. In this dissertation, laboratory runoff experiments were designed to examine the migration dynamics of colloids and tracer (bromide) in overland flow and soil drainage. On a first laboratory experiment on bare ground (rainfall-runoff sand box of 153 cm length under 64 mm/hour rainfall and 0.31 L/min inflow 80 min -30 min bromide/colloid injection and 50 min flushing- events), the surface transport of a colloid (kaolinite, 0.4 ?m diameter, inflow concentration of 179 mg/L, zeta potential -33 mV) showed no statistical difference to that of bromide, although colloids were filtered effectively through the sand in the subsurface flow in agreement with existing colloid filtration theory. In a second experiment with dense vegetation (Bahia grass implanted in the same rainfall-runoff box), colloids (carboxylated polystyrene latex microspheres, 0.3 ?m diameter, zeta potential -28 mV, inflow concentration 10 mg/l) were removed from the surface runoff on the surface of the plant stems and leaves, or by the soil particles and vegetation roots when infiltrated into soil profile, with a total removal rate of 67% of the colloids compared to 26% in the previous experiment. Through the batch adsorption experiments, we also found that plant parts (leave, stem and root) showed different colloid adsorption capacity (highest for roots). The roles of ionic strength, colloid size, inflow rate, and vegetation type on the removal of colloids by dense vegetation were investigated in a smaller scale runoff experiment through two types of dense vegetation (Bahia and Rye grasses). The Vegetative Filter Strip Modeling System-Transport and Reaction Simulation Engine (VFSMOD-RSE) was used to explore the experimental bromide and colloid transport data. In addition to deposition to vegetation, diffusion driven exchange between colloids in the soil pore water and surface runoff was also considered in the model. Factors identified by porous media classic filtration theory were also found important (and following the same trends) in our surface vegetation studies. The deposition of colloids on the vegetation increased with increases in solution ionic strength and particle size, and with decreases in flow rate. We also found vegetation type played an important role on colloid transport with more deposition onto Rye grass than onto Bahia grass under the same experimental conditions. This dissertation showed that dense vegetation can be an effective pollution control practice effectively reduce the colloid concentration in surface runoff and identified some of the key elements governing the effectiveness of the removal process. ( en ) Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Haman, Dorota Z (committee member), Kiker, Gregory (committee member), Johnson, Judith Ann (committee member).

Subjects/Keywords: Bromides; Colloids; Ground transportation; Kaolinite; Overland flow; Rain; Soils; Surface runoff; Vegetation; Water flow; colloids – contaminant – environmental – numerical – surface – vegetation

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APA (6^th Edition):

Yu,Congrong. (2011). Colloid Transport in Surface Runoff through Dense Vegetation. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0043275

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Yu,Congrong. “Colloid Transport in Surface Runoff through Dense Vegetation.” 2011. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0043275.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Yu,Congrong. “Colloid Transport in Surface Runoff through Dense Vegetation.” 2011. Web. 17 Apr 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Yu,Congrong. Colloid Transport in Surface Runoff through Dense Vegetation. [Internet] [Doctoral dissertation]. University of Florida; 2011. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0043275.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Yu,Congrong. Colloid Transport in Surface Runoff through Dense Vegetation. [Doctoral Dissertation]. University of Florida; 2011. Available from: https://ufdc.ufl.edu/UFE0043275

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Florida

13. Gowdish, Leslie C. An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains.

Degree: PhD, Agricultural and Biological Engineering, 2007, University of Florida

URL: https://ufdc.ufl.edu/UFE0021213

► Unsaturated flow can best be described by Richards? equation. Numerical solutions of Richards? equation are generally computationally intensive and require extensive soil property data; therefore,… (more)

▼ Unsaturated flow can best be described by Richards? equation. Numerical solutions of Richards? equation are generally computationally intensive and require extensive soil property data; therefore, simplified physically-based approaches have often been used. The purpose of this research was to develop and validate a physically-based approximate model for simulating infiltration and soil water redistribution in 1-D and quasi 3-D flow domains. The first step was to improve an existing 1-D infiltration and redistribution model, GAR, by increasing the number of redistributing wetting fronts and adding a correction factor, Gamma(a function of redistribution number - N_R, redistribution time - T_R, and saturated hydraulic conductivity - Ks). A comparison of a numerical solution of Richards? equation against the GAR and the modified GAR (MGAR) methods showed that the modified method predicts better the surface water content and is also able to predict the average water content for a desired observation layer. Next, the 3-D form of the Green-Ampt (3DGA) infiltration method was compared to several established point source models and published data. The results of the comparison showed that the 3DGA method is a viable model for simulating quasi 3-D flow domains. An equation for the 3DGA supply radius parameter was developed based on a simplified form of Philip's point source radius equation which is a function of emitter flow rate, saturated hydraulic conductivity and suction at the wetting front. Testing of the proposed equation showed good results for a wide variety of soils. Lastly, 3DGA was extended based on the MGAR method to calculate the change in water content during the 3-D redistribution phase. Comparison with 2-D Richards' numerical solution (Hydrus 2D) showed the model to provide good point-source simulations for a wide variety of soils. ( en ) Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Campbell, Kenneth L. (committee member), Kiker, Gregory (committee member), Annable, Michael D. (committee member).

Subjects/Keywords: Integers; Modeling; Moisture content; Point sources; Simulations; Soil infiltration; Soil water; Soils; Three dimensional modeling; Wetting front; computer, drip, flow, hydrologic, hydrology, irrigation, modeling, soil, trickle, unsaturated, vadose, zone

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

APA (6^th Edition):

Gowdish, L. C. (2007). An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0021213

Chicago Manual of Style (16^th Edition):

Gowdish, Leslie C. “An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains.” 2007. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0021213.

MLA Handbook (7^th Edition):

Gowdish, Leslie C. “An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains.” 2007. Web. 17 Apr 2021.

Vancouver:

Gowdish LC. An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains. [Internet] [Doctoral dissertation]. University of Florida; 2007. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0021213.

Council of Science Editors:

Gowdish LC. An Improved Green-Ampt Soil Infiltration and Redistribution Method and Its Application to 1-Dimensional and Quasi 3-Dimensional (Point Source) Flow Domains. [Doctoral Dissertation]. University of Florida; 2007. Available from: https://ufdc.ufl.edu/UFE0021213

University of Florida

14. Jagannathan, Sudarshan. Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems.

Degree: MS, Agricultural and Biological Engineering, 2007, University of Florida

URL: https://ufdc.ufl.edu/UFE0021840

► Agricultural enterprises require resource management that involve many trade-offs within a complex ecological and financial environment. As an example enterprise within South Central Florida, the… (more)

▼ Agricultural enterprises require resource management that involve many trade-offs within a complex ecological and financial environment. As an example enterprise within South Central Florida, the MacArthur Agro-Ecology Research Center (MAERC) located on the Buck Island Ranch (BIR) in Lake Placid Florida has a major objective to optimize its long term sustainability in both ecological and economic facets. MAERC/BIR combines a research facility with a commercial-scale, beef cattle enterprise (10,300 acres) to explore the role of long-term ecological and social dynamics within sub-tropical grazing systems (www.maerc.org). In order to maintain long term viability and sustainability, a balance between ranch profitability and reduction of non point source pollution effects needs to be established and studied. A possible solution to this challenge is to create a Decision Support System (DSS) for beef cattle enterprises. Such a DSS could serve to communicate simulation results and metrics effectively to the ranch operators, whose focus would be on profitability, as well as the researchers and conservationists, whose focus would be on limiting the effects of non point source pollution. Thus, the objective of this research project is to design and construct a decision support model of a beef cattle ranch system to simulate selected beef cattle and ranch management operations on a southern Florida beef cattle enterprise and to explore the management decisions with respect to water resource factors such as runoff and nutrient loading. The Questions and Decisions ? (QnD?) model system was created to provide an effective and efficient tool to integrate ecosystem, management, economic and socio-political factors into a user-friendly model/game framework. This model is a unique and new development since no other model before has modeled scenarios on a ranch-scale. The model is also good in that it is more than just a hydrological model but also a decision support tool for managers with a user interface that helps them in real-time decision making. The QnD model links spatial components within geographic information system (GIS) files to the abiotic (climatic) and biotic interactions that exist in an environmental system. QnD can be constructed with any combination of detailed technical data or estimated interactions of the ecological/management/social/economic forces influencing an ecosystem. The specific QnD version has been developed for the BIR (QnD:BIR) using the conceptual diagram which shows the integrated ecological and economic factors at the ranch-scale. QnD:BIR uses elements of the Standardized Performance Analysis (SPA) method applied to BIR to simulate elements of beef cattle production and economic dynamics. QnD:BIR uses simplified water and phosphorous dynamics at a monthly time step generated from the long term research from southern Florida beef and dairy cattle research. QnD:BIR utilizes existing geographic information systems (GIS) coverages and monitoring data available from the MAERC/BIR facility. QnD:BIR was… Advisors/Committee Members: Kiker, Gregory (committee chair), Martinez, Christopher J. (committee member), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Kiker, Clyde F. (committee member).

Subjects/Keywords: Ecological modeling; Forage; Hydrological modeling; Hydrology; Modeling; Pastures; Phosphorus; Rain; Ranches; Scatter plots; City of Gainesville ( local )

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APA (6^th Edition):

Jagannathan, S. (2007). Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0021840

Chicago Manual of Style (16^th Edition):

Jagannathan, Sudarshan. “Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems.” 2007. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0021840.

MLA Handbook (7^th Edition):

Jagannathan, Sudarshan. “Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems.” 2007. Web. 17 Apr 2021.

Vancouver:

Jagannathan S. Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems. [Internet] [Masters thesis]. University of Florida; 2007. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0021840.

Council of Science Editors:

Jagannathan S. Development of a Management Focused Decision Support Tool for Okeechobee Basin Beef Cattle Agroecosystems. [Masters Thesis]. University of Florida; 2007. Available from: https://ufdc.ufl.edu/UFE0021840

University of Florida

15. Mayer, Henrique. Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida.

Degree: MS, Soil and Water Science, 2010, University of Florida

URL: https://ufdc.ufl.edu/UFE0042253

► Use of controlled release fertilizer (CRF) is one of the Best Management Practices (BMPs) utilized by the ornamental horticulture industry in South Florida to improve… (more)

▼ Use of controlled release fertilizer (CRF) is one of the Best Management Practices (BMPs) utilized by the ornamental horticulture industry in South Florida to improve nutrient use efficiency (NUE) and reduce detrimental environmental effects. CRF manufacturers generally claim nutrient release will last for a specific period of time (4, 6, 9, or 12 months). The prevalence of relatively high temperatures throughout the year, a typical feature of South Florida climatic conditions, could result in faster nitrogen (N) release rates than those stated by CRF manufacturers and published in their application guidelines. In Florida, no official laboratory method exists that can verify the N release rates provided on CRF product labels. A laboratory study was conducted to investigate the effect of temperature on the N release patterns of five polymer-coated fertilizers (Nutricoteregistered trademark 18-6-8 Type 140, Multicoteregistered trademark 4 Extra 15-7-15 +1.2 Mg, Kingentaregistered trademark 20-8-10 six months, Osmocoteregistered trademark Plus 15-9-12 3-4 months, and Harrell?sregistered trademark Polyon 16-6-11 5-6 months). A long term fertilizer incubation method (180 days), in water at 25degree Celsius (C), was employed to attain polynomial equations of N release as a function of time. A short term or quick extraction method (168 hours or 7 days), in water at 100degreeC, has also been developed to assess N release under accelerated laboratory conditions using a Constant Temperature Extractor (CTE). A nitrogen release prediction equation was developed, using regression analysis, for each of the CRFs with high accuracy (R2 > 0.97). Results suggested that all CRFs tested have shorter N release longevities than the label claimed. High correlation (R2 > 0.97) values indicate N release patterns can be predicted accurately at 25degreeC. The quick laboratory method (100degreeC) shows a high correlation to 25degreeC methods and can be used to predict N releases from CRFs within a few days. In order to evaluate N uptake by plants, liners of Ficus elastica ?Robusta? were grown in a greenhouse in 3.8 L containers with Premier Promix BX / Mycorise Pro 3.8 potting media for 180 days. Plant biomass and N uptake were measured every 30 days. All tested fertilizers increased plant biomass compared to the control treatment which did not receive supplemental nutrition. F. elastica leaf N concentrations ranged from 1.2% at the mature stage (150 days after planting (DAP)) to 3.4% at the juvenile stage (30 DAP). The ranges of N concentrations were 0.8-1.5 for both stems and roots. The highest nitrogen use efficiency (NUE) came from F5 (an alkyd resin-based product) treatment with 40% while the lowest was from F6 (a Polyonregistered trademark material) treatment with 31%. Plant biomass and N uptakes were highly correlated to N release from CRFs measured at 25degreeC (r > 0.94). This study indicated that CRFs hold great promise to improve plant growth and NUE but additional research on characterization, plant response, environmental effects,… Advisors/Committee Members: Li, Yuncong (committee chair), Daroub, Samira H. (committee member), Fitzpatrick, George E. (committee member), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Wang, Qingren (committee member).

Subjects/Keywords: Biomass; Controlled release; Fertilizers; Greenhouses; Incubation; Nitrogen; Nutrients; Plant growth; Planting; Plants; controlled, ficus, nitrogen, slow, temperature; Miami metropolitan area ( local )

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

APA (6^th Edition):

Mayer, H. (2010). Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida. (Masters Thesis). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042253

Chicago Manual of Style (16^th Edition):

Mayer, Henrique. “Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida.” 2010. Masters Thesis, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0042253.

MLA Handbook (7^th Edition):

Mayer, Henrique. “Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida.” 2010. Web. 17 Apr 2021.

Vancouver:

Mayer H. Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida. [Internet] [Masters thesis]. University of Florida; 2010. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0042253.

Council of Science Editors:

Mayer H. Nutrient Release Patterns of Controlled Release Fertilizers Used in the Ornamental Horticulture Industry of South Florida. [Masters Thesis]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0042253

University of Florida

16. Perez Ovilla, Oscar. Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach.

Degree: PhD, Agricultural and Biological Engineering, 2010, University of Florida

URL: https://ufdc.ufl.edu/UFE0042122

► Methods to estimate surface runoff pollutant removal using vegetative filter strips usually consider a limited number of factors (i.e. filter length, slope) and are in… (more)

▼ Methods to estimate surface runoff pollutant removal using vegetative filter strips usually consider a limited number of factors (i.e. filter length, slope) and are in general based on empirical relationships. When an empirical approach is used, the application of the model is limited to those conditions of the data used for the regression equations. The objective of this work is to provide a flexible numerical mechanistic tool to simulate dynamics of a wide range of surface runoff pollutants through dense vegetation and their physical, chemical and biological interactions based on equations defined by the user. This is the first time this approach has been used in vegetative filter strips. The ultimate goal of the model?s flexibility is to help researchers and decision-makers estimate optimal filter characteristics (length, slope, vegetation) to achieve targeted runoff pollutant removal efficiency, while still considering the complex driving processes.. A flexible water quality model based on the Transport and Reaction Simulation Engine program (James, 2008b; Jawitz et al., 2008; James et al., 2009) is coupled to a transport module based on the traditional finite element method to solve the advection-dispersion-reaction equation using the alternating split operator technique. This coupled model is linked to the VFSMOD-W program (Mun tildeoz-Caperna, 1993; Mun tildeoz-Carpena et al., 1993a; Mun tildeoz-Carpena et al., 1993b; Mun tildeoz-Carpena et al., 1999; Mun tildeoz-Carpena and Parsons, 2004; 2010) to mechanistically simulate mobile and stabile pollutants through vegetative filter strips based on user-defined conceptual model where the pollutants and elements within the filter are expressed in terms of differential equations. The numerical transport model was evaluated using analytical solutions and laboratory and field scale experiments. For the analytical testing, the water quality submodel performed well (Nash-Sutcliffe model efficiency coefficient > 0.99). The laboratory scale testing involved the simulation of bromide transport based on the exchange layer concept and the raindrop-induced chemical release theory (Gao et al., 2004). The model was able to explain the removal of bromide in runoff, but the incorporation of more processes is needed to give a more physically based explanation to the simulated results. Field scale experimental testing involved the simulation of dissolved phosphorus in surface runoff, coming from phosphate mining tailing areas, through vegetative filter strips. The model helped to explain the dynamics of runoff dissolved phosphorus concentration through vegetative filter strips due to the dissolution of apatite (Kuo, 2007; Kuo and Mun tildeoz-Carpena, 2009).The difference between the field data and the simulated data total mass of dissolved phosphorus concentration was less than 1%. The incorporation of physically based theories to the flexible water quality module provides a useful tool to explain and predict the removal of runoff pollutants in vegetative filter strips. Laboratory… Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Li, Yuncong (committee member), Kiker, Gregory (committee member), Annable, Michael D. (committee member), Hatfield, Kirk (committee member), James, Andrew L. (committee member).

Subjects/Keywords: Bromides; Mathematical constants; Mathematical independent variables; Phosphorus; Pollutants; Rain; Sediments; Simulations; Surface runoff; Water quality; adr, flexible, grass, rse, runoff, simulation, solute, tarse, transport, vfs, vfsmod; Miami metropolitan area ( local )

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

APA (6^th Edition):

Perez Ovilla, O. (2010). Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042122

Chicago Manual of Style (16^th Edition):

Perez Ovilla, Oscar. “Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach.” 2010. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0042122.

MLA Handbook (7^th Edition):

Perez Ovilla, Oscar. “Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach.” 2010. Web. 17 Apr 2021.

Vancouver:

Perez Ovilla O. Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach. [Internet] [Doctoral dissertation]. University of Florida; 2010. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0042122.

Council of Science Editors:

Perez Ovilla O. Modeling Runoff Pollutant Dynamics Through Vegetative Filter Strips a Flexible Numerical Approach. [Doctoral Dissertation]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0042122

University of Florida

17. Muller, Stuart. Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands.

Degree: PhD, Agricultural and Biological Engineering, 2010, University of Florida

URL: https://ufdc.ufl.edu/UFE0042132

► The Everglades region known as the Southern Inland and Coastal Systems is an important area that supports numerous endangered species and plays a crucial role… (more)

▼ The Everglades region known as the Southern Inland and Coastal Systems is an important area that supports numerous endangered species and plays a crucial role in regulating water-quality conditions in Florida Bay. Taylor Slough is a major feature of this region and represents the primary surface-water pathway for freshwater inputs to Florida Bay. The slough is also subject to intensive flow management under the Comprehensive Everglades Restoration Plan, yet the consequences of such management for water-quality in these oligotrophic and sensitive wetlands are not well understood. A flexible phosphorus water-quality model was therefore developed and tested as an exploratory management tool for the region. Complex local hydrodynamics required that a spatially-distributed hydrodynamic model be used to simulate flow and transport and the USGS model FTLOADDS was selected for this. A user-definable biogeochemical reactive component (aRSE) was then coupled with the hydrodynamic model and the resulting FTaRSELOADDS model was tested against analytical solutions and field data. Hydrodynamic field testing showed that depth-varying Manning s resistance was important for accurately capturing wet and dry conditions during the experimental period. Conceptual water-quality models of increasing complexity were tested against experimental phosphorus field data. Results revealed that a simple daily averaging method was the best approach for atmospheric deposition of phosphorus, which is a crucial but very uncertain water-quality input. A simple conservative transport model provided the best fit between modeled and total phosphorus concentration data. Similar results were also obtained with a more complex and mechanistically justifiable water-quality model. The adaptability of the biogeochemical component was used to study how additional model complexity affects model uncertainty, sensitivity and relevance by evaluating progressively more complex conceptual models using global sensitivity and uncertainty analyses. The framework applying these methods is suggested as a useful way of evaluating models in general, and deciding upon a relevant model structure when the freedom to dictate complexity exists. ( en ) Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Kiker, Gregory (committee member), Jawitz, James W. (committee member), Brown, Mark T. (committee member), James, Andrew L. (committee member), Eric, Swain (committee member).

Subjects/Keywords: Ecological modeling; Everglades; Hydrological modeling; Modeling; Parametric models; Phosphorus; Rain; Simulations; Spatial models; Subroutines; biogeochemistry, complexity, deposition, distributed, everglades, florida, hydrodynamic, macrophytes, mannings, mechanistic, modeling, periphyton, phosphorus, quality, sensitivity, slough, spatially, surfacewater, water, wetlands; Miami metropolitan area ( local )

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

APA (6^th Edition):

Muller, S. (2010). Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042132

Chicago Manual of Style (16^th Edition):

Muller, Stuart. “Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands.” 2010. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0042132.

MLA Handbook (7^th Edition):

Muller, Stuart. “Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands.” 2010. Web. 17 Apr 2021.

Vancouver:

Muller S. Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands. [Internet] [Doctoral dissertation]. University of Florida; 2010. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0042132.

Council of Science Editors:

Muller S. Adaptive Spatially-Distributed Water-Quality Modeling An Application to Mechanistically Simulate Phosphorus Conditions in the Variable-Density Surface Waters of Coastal Everglades Wetlands. [Doctoral Dissertation]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0042132

University of Florida

18. Kuo, Yi-Ming. Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida.

Degree: PhD, Agricultural and Biological Engineering, 2007, University of Florida

URL: https://ufdc.ufl.edu/UFE0021212

► Runoff non-point source pollution from phosphate mining areas is a potential risk to ecosystems in many parts of the world. Mining sand tailings that still… (more)

▼ Runoff non-point source pollution from phosphate mining areas is a potential risk to ecosystems in many parts of the world. Mining sand tailings that still contain apatite (phosphate rock) shape the landscapes in reclaimed lands at the upper Peace River basin of Central Florida. The objectives of this research were to assess the surface runoff pollution loads from the mining sand tailings in Central Florida and to evaluate and model the efficiency of vegetative filter strips to control phosphorus (P) from these areas. Field experimental data were collected from two sites with different slopes, source-to-filter ratios, and soil properties representative of the surrounding area. The numerical model VFSMOD-W was used to predict overland flow and sediment trapping within the filter and was linked to a simplified P transport algorithm based on experimental data to predict TP, PP, and DP fractions in the filter outflow. An advanced global inverse optimization technique is used for the model calibration process, and consideration to the uncertainty of the measured data is given. Phosphorus in soils of the area was in the form of apatite, as indicated by x-ray diffraction (XRD). TP concentrations were about 17.0-25.7 g/kg and Ca- and Mg-bound P accounted for about 95% of TP. DP concentrations were about 0.4 - 3.0 mg/L in surface runoff collected from the experimental sites. Release of P from the soils was primarily from apatite dissolution rather than desorption from metal oxides that is more typical of soils of the region. Runoff volume, sediment, TP, and DP were reduced by at least 62%, 97%, 96%, and 66%, respectively, within the vegetative filters. The VFSMOD-W can predict hydrology transport well (Nash and Sutcliffe efficiency (Ceff), 0.60 < Ceff < 0.99) for all but small events (peak runoff flow rate in the VFS < 0.4 L/s) due likely to large measurement uncertainty in the small events. The good predictions in runoff and sediment outflow from the filter result in good predictions of PP transport since apatite is a main component of sediment. A good prediction of DP filter outflow was found when considering rainfall impact on DP dissolved from apatite in surface soil. The inclusion of the uncertainty of measured data in the goodness-of-fit indicators provides us more realistic information to evaluate model performance and data sets. VFSMOD-W successfully predicts runoff, sediment, and P transport from phosphate mining sand tailings, which provides management agencies with a design tool for controlling runoff and P transport. ( en ) Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Campbell, Kenneth L. (committee member), Rhue, Roy D. (committee member), Hatfield, Kirk (committee member), Harris, Willie G. (committee member).

Subjects/Keywords: Apatites; Flow velocity; Mining; Phosphates; Phosphorus; Rain; Sediment transport; Sediments; Soils; Surface runoff; apatite, dissolution, peace, phosphate, phosphorus, runoff, sediment, simulation, vegetative, vfsmod; Greater Orlando ( local )

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

APA (6^th Edition):

Kuo, Y. (2007). Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0021212

Chicago Manual of Style (16^th Edition):

Kuo, Yi-Ming. “Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida.” 2007. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0021212.

MLA Handbook (7^th Edition):

Kuo, Yi-Ming. “Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida.” 2007. Web. 17 Apr 2021.

Vancouver:

Kuo Y. Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida. [Internet] [Doctoral dissertation]. University of Florida; 2007. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0021212.

Council of Science Editors:

Kuo Y. Vegetative Filter Strips to Reduce Surface Runoff Phosphorus Transport from Mining Sand Tailings in the Upper Peace River Basin of Central Florida. [Doctoral Dissertation]. University of Florida; 2007. Available from: https://ufdc.ufl.edu/UFE0021212

University of Florida

19. Zajac, Zuzanna. Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models.

Degree: PhD, Agricultural and Biological Engineering, 2010, University of Florida

URL: https://ufdc.ufl.edu/UFE0042111

► With spatially distributed models, the effect of spatial uncertainty of the model inputs is one of the least understood contributors to output uncertainty and can… (more)

▼ With spatially distributed models, the effect of spatial uncertainty of the model inputs is one of the least understood contributors to output uncertainty and can be a substantial source of errors that propagate through the model. The application of the global uncertainty and sensitivity (GUA/SA) methods for formal evaluation of models is still uncommon in spite of its importance. Even for the infrequent cases where the GUA/SA is performed for evaluation of a model application, the spatial uncertainty of model inputs is disregarded due to lack of appropriate tools. The main objective of this work is to evaluate the effect of spatial uncertainty of model inputs on the uncertainty of spatially distributed watershed models in the context of other input uncertainty sources. A new GUA/SA framework is proposed in this dissertation in order to incorporate the effect of spatially distributed numerical and categorical model inputs into the global uncertainty and sensitivity analysis (GUA/SA). The proposed framework combines the global, variance-based method of Sobol and geostatistical techniques of sequential simulation (SS). Sequential Gaussian simulation (SGS) is used for estimation of spatial uncertainty for numerical inputs (like land elevation), while sequential indicator simulation (SIS) is used for assessment of spatial uncertainty of categorical inputs (like land cover type). The Regional Simulation Model (RSM) and its application to WCA-2A in the South Florida Everglades is used as a test bed of the framework developed in this dissertation. The RSM outputs chosen as metrics for GUA/SA for this study are key performance measures generally adopted in the Everglades restoration studies: hydroperiod, water depth amplitude, mean, minimum and maximum. The GUA/SA results for two types of outputs, domain-based (spatially averaged over domain) and benchmark cell-based, are compared. The benchmark cell-based outputs are characterized with larger uncertainty than their domain-based counterparts. The uncertainty of benchmark cell-based outputs is mainly controlled by land elevation uncertainty, while uncertainty of domain-based outputs it also attributed to factors like conveyance parameters. The results indicate that spatial uncertainty of model inputs is indeed an important source of model uncertainty. The land cover distribution affects model outputs through delineation of Manning s roughness zones and evapotranspiration factors associated to the different vegetation classes. This study shows that in this application the spatial representation of land cover has much smaller influence on model uncertainty when compared to other sources of uncertainty like spatial representation of land elevation. The spatial uncertainty of land cover was found to affect RSM domain-based model outputs through delineation of Manning s roughness zones more than through ET parameters effects. The relationship between model uncertainty and alternative spatial data resolutions was studied to provide an illustration of how the procedure may be… Advisors/Committee Members: Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee chair), Kiker, Gregory (committee member), Binford, Michael W. (committee member), Vanderlinden, Karl (committee member), Obeysekera, Jayantha (committee member).

Subjects/Keywords: Hydrological modeling; Land cover; Modeling; Parametric models; Sensitivity analysis; Simulations; Spatial models; Topographical elevation; Vegetation; Water depth; analysis, hydrologic, model, sensitivity, spatial, uncertainty; Miami metropolitan area ( local )

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

APA (6^th Edition):

Zajac, Z. (2010). Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042111

Chicago Manual of Style (16^th Edition):

Zajac, Zuzanna. “Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models.” 2010. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0042111.

MLA Handbook (7^th Edition):

Zajac, Zuzanna. “Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models.” 2010. Web. 17 Apr 2021.

Vancouver:

Zajac Z. Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models. [Internet] [Doctoral dissertation]. University of Florida; 2010. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0042111.

Council of Science Editors:

Zajac Z. Global Sensitivity and Uncertainty Analysis of Spatially Distributed Watershed Models. [Doctoral Dissertation]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0042111

University of Florida

20. DOURTE,DANIEL RAY. Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management.

Degree: PhD, Agricultural and Biological Engineering, 2011, University of Florida

URL: https://ufdc.ufl.edu/UFE0042709

► The total annual groundwater withdrawals in India (251 billion km3) are the highest of any nation. Depletion of groundwater resources is increasingly common in much… (more)

▼ The total annual groundwater withdrawals in India (251 billion km3) are the highest of any nation. Depletion of groundwater resources is increasingly common in much of India, and farmers bear significant costs and greater vulnerability resulting from the loss or reduction of a reliable irrigation source. Three hypotheses were tested: (1) current rice cropland extent and management practices are depleting groundwater supplies, (2) tillage for water harvesting can significantly increase groundwater recharge in rainfed croplands, and (3) there are combinations of tillage, crop selection, and irrigation that are likely to increase groundwater recharge and reduce groundwater withdrawals. In order to test these hypotheses, there was the objective to evaluate improvements to the Green-Ampt infiltration routines of a hydrologic model, the Soil and Water Assessment Tool (SWAT), through the addition of a dynamic surface storage depth used for tillage parameterization. Also, the final objective was to assess the social and economic impacts of alternative agricultural land management. SWAT was used for simulating the groundwater balance (recharge ? irrigation pumping) of a 512 ha watershed to examine a variety of possible agricultural management options for groundwater sustainability. The best options for groundwater sustainability were evaluated based on predictions of groundwater recharge and withdrawals, evapotranspiration, and estimated household incomes. Reductions in rice cropland areas significantly improved the groundwater balance of the study area; water harvesting tillage simulated in all rainfed areas increased groundwater recharge by about 30 mm/year. Surface storage depth was shown to be the most important parameter for infiltration prediction in agricultural systems having 1.5 to 5.0 cm of surface storage capacity; surface storage depth was still important for infiltration prediction in systems having 0 to 1.0 cm of surface storage capacity. The vast extent of rice cropland areas and their highly negative groundwater balance suggest that irrigation from groundwater resources has caused much of the observed groundwater decline in India. Sensitivity analyses suggest that the addition of a variable surface storage depth head to the Green-Ampt infiltration routine can reduce uncertainty in infiltration simulations. Evidence of rainfall characterized by storms of greater intensity suggests that surface storage of runoff will become increasingly important for maintaining or improving current levels of groundwater recharge. Estimates of the economic impacts of selected management scenarios show promise that moderate management changes to improve the groundwater balance can still maintain or increase total watershed-scale income. ( en ) Advisors/Committee Members: Haman, Dorota Z (committee chair), Racevskis, Laila Anna (committee member), Jones, James W (committee member), Shukla, Sanjay (committee member), Carpena%2C%20Rafael%22%29&pagesize-30">Munoz-Carpena, Rafael (committee member), Motz, Louis H (committee member).

Subjects/Keywords: Crops; Farmlands; Groundwater; Groundwater recharge; Irrigation; Irrigation management; Rain; Rice; Tillage; Water balance; GREEN – GROUNDWATER – INDIA – SWAT – WATER

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

APA (6^th Edition):

RAY, D. (2011). Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0042709

Chicago Manual of Style (16^th Edition):

RAY, DOURTE,DANIEL. “Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management.” 2011. Doctoral Dissertation, University of Florida. Accessed April 17, 2021. https://ufdc.ufl.edu/UFE0042709.

MLA Handbook (7^th Edition):

RAY, DOURTE,DANIEL. “Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management.” 2011. Web. 17 Apr 2021.

Vancouver:

RAY D. Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management. [Internet] [Doctoral dissertation]. University of Florida; 2011. [cited 2021 Apr 17]. Available from: https://ufdc.ufl.edu/UFE0042709.

Council of Science Editors:

RAY D. Cropping Systems for Groundwater Security in India Groundwater Responses to Agricultural Land Management. [Doctoral Dissertation]. University of Florida; 2011. Available from: https://ufdc.ufl.edu/UFE0042709

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