Current Search: Water--Pollution. (x)
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- Title
- Nitrate partitioning between water and sediments.
- Creator
- Kari, Ramanaprasad., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
A complete understanding of nitrate partitioning between water and sediments is absolutely necessary to quantify eutrophication and other harmful effects of nitrate addition to a lake. The bottom sediments can act both as source and sink for nitrates. Turbulent conditions induced by wind forces cause sediments to suspend in the water column. During suspension sediments adsorb/release nitrates and other contaminants into the ambient water. This study investigated the effects of temperature,...
Show moreA complete understanding of nitrate partitioning between water and sediments is absolutely necessary to quantify eutrophication and other harmful effects of nitrate addition to a lake. The bottom sediments can act both as source and sink for nitrates. Turbulent conditions induced by wind forces cause sediments to suspend in the water column. During suspension sediments adsorb/release nitrates and other contaminants into the ambient water. This study investigated the effects of temperature, sediment and nitrate concentration on the exchange and partitioning of nitrates between water and sediments. The Langmuir adsorption model was used to quantify the adsorption/desorption processes. A decrease in the value of partition coefficient with increase in sediment concentration was observed. The laboratory experiments revealed that an increase in temperature of the water column favored the adsorption of nitrates by the bottom sediments. The nitrate diffusion coefficients were estimated by utilizing Fick's second law of diffusion. Sediment concentration profiles were strongly dependant on the oscillating-grid induced turbulence effects.
Show less - Date Issued
- 1993
- PURL
- http://purl.flvc.org/fcla/dt/14946
- Subject Headings
- Nitrates, Water--Pollution, Sediments, Suspended
- Format
- Document (PDF)
- Title
- Case study - trichloroethylene groundwater contamination at Vero Beach, Florida.
- Creator
- Wang, Tsen C., Lenahan, Robert A., TenEyck, John
- Date Issued
- 1984-12
- PURL
- http://purl.flvc.org/fcla/dt/3358976
- Subject Headings
- Trichloroethylene, Water--Pollution, Estuarine pollution, Groundwater--Pollution--Florida
- Format
- Document (PDF)
- Title
- Effects of St. Lucie Estuarine Discharge Water and Thermal Stress on the Coral Montastraea cavernosa.
- Creator
- Shatters, Alycia, Voss, Joshua, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Coral reef declines, particularly in coastal zones, have been linked to thermal stress and anthropogenic impacts on water quality. St. Lucie Reef near Stuart, Florida receives increased estuarine efflux as a result of watershed changes and management policies that have substantially altered historic, natural flows. This research used ambient and elevated temperatures (25°C and 30°C, respectively), and offshore versus St. Lucie Estuarine discharge water to investigate the individual and...
Show moreCoral reef declines, particularly in coastal zones, have been linked to thermal stress and anthropogenic impacts on water quality. St. Lucie Reef near Stuart, Florida receives increased estuarine efflux as a result of watershed changes and management policies that have substantially altered historic, natural flows. This research used ambient and elevated temperatures (25°C and 30°C, respectively), and offshore versus St. Lucie Estuarine discharge water to investigate the individual and interactive effects of thermal and water quality stress on Montastraea cavernosa, a dominant scleractinian coral species at St. Lucie Reef. These goals were accomplished using ex-situ, factorial, experimental design that was supplemented with existing in-situ monitoring on St. Lucie Reef. Zooxanthellae density and chlorophyll content were evaluated to determine effects on the corals and their symbionts. Zooxanthellae populations were significantly affected by thermal stress. Significant interactions between temperature and water treatment were observed, suggesting that the impacts of discharge water may be supplanted when corals are exposed to thermal stress. In a supplement to the experiment, M. cavernosa colonies transplanted from Palm Beach to St. Lucie Reef demonstrated resilience despite exposure to more variable environmental conditions. Collaborative partnerships with multiple state agencies and local government offices facilitated data sharing to inform decision making for South Florida’s resource management strategies. Creating effective resource management is crucial for the conservation of coastal ecosystems impacted by land-based sources of pollution both locally and globally.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00004843, http://purl.flvc.org/fau/fd/FA00004843
- Subject Headings
- Coral declines., Coral reef management., Estuarine pollution., Water--Pollution.
- Format
- Document (PDF)
- Title
- Trace element concentrations in skin of free-ranging bottlenose dolphins (Tursiops truncatus) from the southeast Atlantic coast.
- Creator
- Stavros, Hui-Chen W., Bossart, Gregory D., Hulsey, Thomas C., Fair, Patricia A., Harbor Branch Oceanographic Institute
- Date Issued
- 2008
- PURL
- http://purl.flvc.org/FCLA/DT/2709686
- Subject Headings
- Marine mammals --Effects of water pollution on, Bottlenose dolphin --Research --United States, Trace elements --Toxicology
- Format
- Document (PDF)
- Title
- A New Sterol Sulfate, Sch 572423, from a Marine Sponge, Topsentia sp.
- Creator
- Yang, Shu-Wei, Buevich, Alexei, Chan, Tze-Ming, Smith, Michelle, Lachowicz, Jean, Pomponi, Shirley A., Wright, Amy E., Mierzwa, Ronald, Patel, Mahesh, Gullo, Vincent, Chu, Min
- Date Issued
- 2003
- PURL
- http://purl.flvc.org/FCLA/DT/2827816
- Subject Headings
- Water quality bioassay, Water --Pollution --Toxicology, Sponges, Marine ecosystem management, Filters and filtration
- Format
- Document (PDF)
- Title
- THE EFFECTS OF A WASTEWATER OUTFALL ON BENTHIC MACROINVERTEBRATES IN LAKE WORTH (PALM BEACH COUNTY), FLORIDA.
- Creator
- DEIS, DONALD RAY., Florida Atlantic University
- Abstract/Description
-
Quantitative reference data were collected along two transects in the area of a wastewater outfall in Lake Worth (Palm Beach County), Florida. Benthic samples were taken during two sampling periods (3 February 1977 and 6 July 1977) at six stations along each transect. Two physical-chemical stations were sampled weekly between benthic sampling periods and during two 12 h periods (5 February 1977 and 8 July 1977). Water quality and sediment data were correlated with the distribution and...
Show moreQuantitative reference data were collected along two transects in the area of a wastewater outfall in Lake Worth (Palm Beach County), Florida. Benthic samples were taken during two sampling periods (3 February 1977 and 6 July 1977) at six stations along each transect. Two physical-chemical stations were sampled weekly between benthic sampling periods and during two 12 h periods (5 February 1977 and 8 July 1977). Water quality and sediment data were correlated with the distribution and abundance of benthic fauna. Significant differences (ANOVA, a < 0.05) in the physical-chemical conditions were found between the area near the outfall and background conditions in the estuary. Diversity (H') significantly (SNK, P < 0.05) decreased and dominance (c) significantly (SNK, P < 0.05) increased in the area of the outfall. The area surrounding the outfall was dominated by the pollution-tolerant polychaete Capitella capitata which represented a pollution indicator and opportunistic species in this study.
Show less - Date Issued
- 1978
- PURL
- http://purl.flvc.org/fcla/dt/13949
- Subject Headings
- Water--Pollution--Florida--Palm Beach County, Refuse and refuse disposal--Florida--Palm Beach County
- Format
- Document (PDF)
- Title
- INTRAGOVERNMENTAL AND INTERGOVERNMENTAL ASPECTS OF WATER POLLUTION CONTROL IN BROWARD COUNTY, FLORIDA.
- Creator
- DAVIS, NOREEN SNYDERMAN., Florida Atlantic University, Thomas, Robert D., Dorothy F. Schmidt College of Arts and Letters, Department of Political Science
- Abstract/Description
-
This thesis was prepared to ascertain how the activities of the county, state, and federal governments, affected the attitudes of top level Broward County officials who have formal responsibilities in the area of water pollution control in Broward County. Their attitudes were determined by their responses to questions on intra-governmental and intergovernmental cooperation in both general and specific areas. The specific areas were: program development and/or implementation, sharing...
Show moreThis thesis was prepared to ascertain how the activities of the county, state, and federal governments, affected the attitudes of top level Broward County officials who have formal responsibilities in the area of water pollution control in Broward County. Their attitudes were determined by their responses to questions on intra-governmental and intergovernmental cooperation in both general and specific areas. The specific areas were: program development and/or implementation, sharing information, sharing equipment, sharing manpower, sharing funding. The findings showed that in both the general and specific areas, county officials felt the intra-county relationship to be cooperative. In all categories but that of funding, the intra-county cooperative ratings were equal to or higher than the inter-level ratings. The high intra-county cooperative rating was attributed to the homogeneity of the respondents, and to their perceptions of the nature of the county, state, and federal water pollution control programs.
Show less - Date Issued
- 1972
- PURL
- http://purl.flvc.org/fcla/dt/13474
- Subject Headings
- Water--Pollution--Florida--Broward County, Broward County (Fla)--Officials and employees--Attitudes
- Format
- Document (PDF)
- Title
- Trace element concentrations in blood of free-ranging bottlenose dolphins (Tursiops truncatus): influence of age, sex and location.
- Creator
- Stavros, Hui-Chen W., Bossart, Gregory D., Hulsey, Thomas C., Fair, Patricia A., Harbor Branch Oceanographic Institute
- Date Issued
- 2007
- PURL
- http://purl.flvc.org/FCLA/DT/2708406
- Subject Headings
- Marine mammals --Effects of water pollution on, Bottlenose dolphin --Research --United States, Trace elements --Toxicology, Mercury --Bioaccumulation
- Format
- Document (PDF)
- Title
- Oceans and human health: emerging public health risks in the marine environment.
- Creator
- Fleming, L.E., Broad, K., Clement, A., Dewailly, E., Elmir, S., Knap, A., Pomponi, Shirley A., Smith, S., Solo Gabriele, H., Walsh, P.
- Date Issued
- 2006
- PURL
- http://purl.flvc.org/FCLA/DT/1784217
- Subject Headings
- Marine resources conservation, Pollution marine, Pollution --Environmental aspects, Marine animals --Effect of water pollution on, Seafood --Contamination
- Format
- Document (PDF)
- Title
- The correlations between OSTDS sites and the pollution of the surface water bodies in Broward County.
- Creator
- Rocher, Yvel, Bloetscher, Frederick, Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
Sampling data of many surface water bodies in Broward County tend to reveal abnormal levels of bacterial concentrations for total coliform, Escherichia coli and Enterococcus. Given the presence of septic systems in geohydrologically sensitive areas throughout the County, several studies (Morin 2005 and Bocca 2007) suggested a correlation in the high bacterial densities and the septic sites.
- Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004324, http://purl.flvc.org/fau/fd/FA00004324
- Subject Headings
- Bacterial pollution of water, Groundwater -- Pollution, Pathogenic microorganisms -- Detection, Sewage disposal, Sewerage, Water -- Pollution -- Point source identification, Water quality -- Management
- Format
- Document (PDF)
- Title
- Heavy Metal Sorption by Aquatic Plants in Taiwan.
- Creator
- Lee, C.-L., Wang, Tsen C., Hsu, C.-H., Chiou, A.-A., Harbor Branch Oceanographic Institute
- Date Issued
- 1998
- PURL
- http://purl.flvc.org/FCLA/DT/3169902
- Subject Headings
- Heavy metals --Environmental aspects, Heavy-metal tolerant plants, Plants --Effect of heavy metals on, Heavy metals--Absorption and adsorption, Water --Pollution
- Format
- Document (PDF)
- Title
- The effects of on-site sewage treatment and disposal systems on the relief canals of Indian River County, the St. Sebastian River, and the central Indian River lagoon.
- Creator
- Tarnowski, Marie E., Lapointe, Brian E., Florida Atlantic University, Charles E. Schmidt College of Science, Center for Environmental Studies
- Abstract/Description
-
Effluent from on-site sewage treatment and disposal systems (OSTDS) is generally known to impact groundwaters and surface waters with nitrogen (N) and phosphorus (P) and other contaminants. Little research has quantified this problem along the Indian River Lagoon (IRL), especially in Indian River County (IRC) where there are 26,660 active systems. This study assessed the effects of OSTDS on contamination of surface and groundwaters along three urbanized canals and the St. Sebastian River in...
Show moreEffluent from on-site sewage treatment and disposal systems (OSTDS) is generally known to impact groundwaters and surface waters with nitrogen (N) and phosphorus (P) and other contaminants. Little research has quantified this problem along the Indian River Lagoon (IRL), especially in Indian River County (IRC) where there are 26,660 active systems. This study assessed the effects of OSTDS on contamination of surface and groundwaters along three urbanized canals and the St. Sebastian River in IRC, all of which flow into the Central IRL. Multiple lines of evidence were used to define the source of the nutrient loadings including the novel approach of using the artificial sweetener, sucralose, as an indicator of human sewage impact. Results indicate that areas with high densities of OSTDS are contributing N to surface waters and elevating N:P ratios through submarine groundwater discharge and promoting eutrophication in the Central IRL.
Show less - Date Issued
- 2014
- PURL
- http://purl.flvc.org/fau/fd/FA00004335, http://purl.flvc.org/fau/fd/FA00004335
- Subject Headings
- Groundwater -- Pollution, Indian River (Lagoon) -- Environmental aspects, Indian River County (Fla.) -- Environmental aspects, Nutrient pollution of water, Saint Sebastian River (Fla.) -- Environmental aspects, Sewage disposal, Sewerage, Water -- Pollution -- Point source identification, Water quality -- Management
- Format
- Document (PDF)
- Title
- Identifying and characterizing the immune cell populations of Atlantic bottlenose dolphins (Tursiops truncatus).
- Creator
- Bible, Brittany, Nouri-Shirazi, Mahyar, Florida Atlantic University, Charles E. Schmidt College of Medicine, Department of Biomedical Science
- Abstract/Description
-
Recently, there has been an increase in marine mammal mortalities, most commonly Atlantic bottlenose dolphins, Tursiops truncatus, which is an alarming indication of the health status of the marine ecosystem. Studies have demonstrated that some free-ranging dolphins exhibit a suppressed immune system possibly because of exposure to contaminants or infectious microorganisms. However, this research has been limited due to a lack of commercially available marine-specific antibodies. Therefore,...
Show moreRecently, there has been an increase in marine mammal mortalities, most commonly Atlantic bottlenose dolphins, Tursiops truncatus, which is an alarming indication of the health status of the marine ecosystem. Studies have demonstrated that some free-ranging dolphins exhibit a suppressed immune system possibly because of exposure to contaminants or infectious microorganisms. However, this research has been limited due to a lack of commercially available marine-specific antibodies. Therefore, the first chapter of this thesis aims to identify cross-reactive terrestrial-specific antibodies that could be used to phenotype and compare the immune cell populations of dolphins under human care and free-ranging dolphins. The second chapter aims to utilize terrestrial-specific growth factors and dendritic cell (DC) surface markers to generate, characterize, and compare ex vivo DCs from peripheral blood mononuclear cells (PBMCs) of dolphins under human care and free-ranging dolphins. In summary, I have identified differences within the PBMCs and ex vivo generated DCs of dolphins under human care and free-ranging dolphins that could potentially shed light on the impact of environmental contaminants and infectious microorganisms on immune cells which could lead to increased morbidity and mortality.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004347, http://purl.flvc.org/fau/fd/FA00004347
- Subject Headings
- Bottlenose dolphin -- Physiology, Dolphins -- Physiology, Marine animals -- North Atlantic Ocean -- Identification., Marine mammals -- Atlantic Coast (U.S.), Marine mammals -- Effect of water pollution on, Marine mammals -- North Atlantic Ocean -- Identification
- Format
- Document (PDF)
- Title
- INTERGOVERNMENTAL RELATIONS AS SEEN BY FLORIDA STATE LEGISLATORS: LAND-USE AND WATER RESOURCE PROBLEMS.
- Creator
- HAMM, KEITH EDWARD., Florida Atlantic University, Thomas, Robert D., Dorothy F. Schmidt College of Arts and Letters, Department of Political Science
- Abstract/Description
-
The major purposes of this study are (1) to ascertain legislators' perceptions of intergovernmental relations for policy issues and (2) to seek an explanation for these perceptions. The central focus of this thesis is on the 1972 Florida Legislature. Specifically, the focus is on the legislators' perceptions with regard to land use and water resource problems in Florida.
- Date Issued
- 1973
- PURL
- http://purl.flvc.org/fcla/dt/13572
- Subject Headings
- Legislators--Florida--Attitudes, Land use--Law and legislation--Florida, Water resources development--Law and legislation--Florida, Water--Pollution--Law and legislation--Florida
- Format
- Document (PDF)