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Pages
- Title
- Experimental evaluation of cement stucco surfacing material (CSSM) removal for reducing particulates in air.
- Creator
- Cowan, David, Meeroff, Daniel E., Florida Atlantic University, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
Every year millions of construction workers are exposed to dust in levels that create a hazard to them (Fundukian, 2011). Their environment is contaminated by activities such as cutting, chipping, grinding and sanding building materials. The Occupational Safety and Health Administration (OSHA) refers to this general collection of building materials debris and fine particulates as nuisance dust. Some of the particles in nuisance dust possess properties that make them especially hazardous, such...
Show moreEvery year millions of construction workers are exposed to dust in levels that create a hazard to them (Fundukian, 2011). Their environment is contaminated by activities such as cutting, chipping, grinding and sanding building materials. The Occupational Safety and Health Administration (OSHA) refers to this general collection of building materials debris and fine particulates as nuisance dust. Some of the particles in nuisance dust possess properties that make them especially hazardous, such as their shape or specific gravity. It has been found by the Center for Disease Control (CDC) that inhalation of quantities of silica dust above the permissible exposure limit (15.0 mg/m3) causes a deterioration of the outside lining of the lung.This research seeks to limit this exposure by a pretreatment process using acid application and then absorbed moisture content that reduces airborne particulate during the removal of cement stucco surfacing materials. Successful pretreatment would allow removal of CSSM from substrates such that the release of airborne particulates does not exceed the permissible exposure limits (PEL) found in the 29 CFR-Table Z-3 for mining applications (15-mg/m3).
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004438, http://purl.flvc.org/fau/fd/FA00004438
- Subject Headings
- Air -- Pollution -- United States -- Measurement, Air quality management, Concrete -- Deterioration, Environmental health, Particles -- Environmental aspects
- Format
- Document (PDF)
- Title
- A Study of the Longevity of f2 Bacteriophage in Marine and Fresh Water Sewage Effluent, and Its Use as a Biological Indicator of Pollution.
- Creator
- Twist, Ernest Michael, Waddell, Glenn H., Florida Atlantic University
- Abstract/Description
-
The significance of the transmission of animal viruses in sewage polluted fresh and marine waters becomes an increasingly important factor as more and more evidence is presented to support the fact that in the case of many viral types one virus particle constitutes an infective dose. Therefore it is very important that a method of determining the extent of viral pollution in sewage polluted bodies of marine and fresh water be found. The longevity of f2 bacteriophage in both marine and fresh...
Show moreThe significance of the transmission of animal viruses in sewage polluted fresh and marine waters becomes an increasingly important factor as more and more evidence is presented to support the fact that in the case of many viral types one virus particle constitutes an infective dose. Therefore it is very important that a method of determining the extent of viral pollution in sewage polluted bodies of marine and fresh water be found. The longevity of f2 bacteriophage in both marine and fresh water sewage polluted samples was determined, and shown to be 3 to 4 days for marine water and 8 days for fresh water. It was also shown that the culture medium in which the f2 phage was produced, and the larger macromolecular polymers commonly found associated with sewage had a favorable affect in increasing the longevity of f2 phage. It was shown that f2 bacteriophage could be used to follow the initial dispersion of the sewage boil arising from an ocean outfall sewerage system. From these results it was concluded that f2 bacteriophage could be used for more detailed studies concerned with the transmission of viruses in sewage polluted waters.
Show less - Date Issued
- 1968
- PURL
- http://purl.flvc.org/fau/fd/FA00000841
- Subject Headings
- Sewage disposal in the ocean, Marine pollution, Bacteriophages, Sewage--Microbiology
- 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
- Distribution and Survival of Micrococcaceae in Marine Waters of Southeast Florida (Boca Raton and Pompano Beach).
- Creator
- Thompson, Mary C., Hoffmann, H. A., Florida Atlantic University
- Abstract/Description
-
This study was undertaken to determine the distribution and possible source of Staphylococcus aureus, s. epidermidis, other Micrococcaceae , and enterococci recovered from samples of water collected at the following locations: the Pompano Beach sewage outfall, the Intracoastal Waterway, 5 miles due east of the Boca Raton Inlet, over the 65 ft Boca Raton reef, and in 5 ft of water along the Boca Raton beach. It was also of interest to study the feasibility of employing s. aureus as an...
Show moreThis study was undertaken to determine the distribution and possible source of Staphylococcus aureus, s. epidermidis, other Micrococcaceae , and enterococci recovered from samples of water collected at the following locations: the Pompano Beach sewage outfall, the Intracoastal Waterway, 5 miles due east of the Boca Raton Inlet, over the 65 ft Boca Raton reef, and in 5 ft of water along the Boca Raton beach. It was also of interest to study the feasibility of employing s. aureus as an indicator of fecal pollution in the marine environment. Neither staphylococci nor enterococci were recovered from 5 samples of beach sand collected from the high tide line to the low tide line. Only low concentrations of staphylococci were recovered from samples collected from the Intracoastal Waterway. The staphylococci recovered from the marine locations do not appear to be true marine bacteria. They do not appear to be originating from bathers, beach washings or the Intracoastal Waterway. Sampling was inadequate to reach definite conclusions on the origin of the Micrococcaceae recovered in the ocean. However, these data indicate the staphylococci originate from the Pompano Beach sewage outfall. Staphylococcus aureus appears to be more resistant to the conditions of the marine environment than the other Micrococcaceae, enterococci or other sewage bacteria recovered on Mannitol Salt Agar and m-Enterococcus Agar. The mean per cent recovery of S. aureus increases with increased distances downstream from the outfall to the 65 ft reef and sampling site 5 miles offshore. ~· aureus appears to be a good indicator of fecal pollution in the marine environment. Survival studies of washed cells of a coagulase positive Staphylococcus aureus run in autoclaved sea water and autoclaved Intracoastal water gave mean decimal reduction times of 16.6 hr and 11.4 hr, respectively. Staphylococci were not recovered from Bryothamnion triguetrum,Caulerpa sertularioides f. brevipes, Dasycladus vermicularis or Padina sanctae-crucis. Ten Micrococcaceae recovered from the ocean were not inhibited by extracts prepared from these algae. Intact segments of these algae possessed antibacterial activity against most, if not all of these Micrococcaceae.
Show less - Date Issued
- 1969
- PURL
- http://purl.flvc.org/fau/fd/FA00000840
- Subject Headings
- Staphylococcus aureus, Sewage disposal in the ocean--Florida, Marine pollution
- 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
- AN EVALUATION OF MICROBIOLOGICAL METHODS FOR USE IN MARINE WATERS: ENUMERATION OF STAPHYLOCOCCI BY A FLUORESCENT ANTIBODY TECHNIQUE, AND ISOTOPIC DETERMINATION OF BACTERIAL METABOLIC POTENTIAL.
- Creator
- BUCHANAN, IAN ELLIS., Florida Atlantic University, Hoffmann, H. A.
- Abstract/Description
-
Two methods, a membrane filter-fluorescent antibody technique for detection of Staphylococcus aureus, and isotopic determination of relative heterotrophic activity, were compared with a standard technique based on the recovery of coliform organisms for evaluation as indices of marine pollution. Water samples were collected from coastal areas of Pompano Beach and Boca Raton, Florida. Coliform and staphylococci survival in seawater was studied under laboratory conditions. The effect of exposure...
Show moreTwo methods, a membrane filter-fluorescent antibody technique for detection of Staphylococcus aureus, and isotopic determination of relative heterotrophic activity, were compared with a standard technique based on the recovery of coliform organisms for evaluation as indices of marine pollution. Water samples were collected from coastal areas of Pompano Beach and Boca Raton, Florida. Coliform and staphylococci survival in seawater was studied under laboratory conditions. The effect of exposure to seawater on substrate uptake by coliforms and other sewage microorganisms was studied using isotopic methods. The results of these studies support the feasibility of using S· aureus as a long-range indicator of marine pollution. Under natural conditions, S· aureus appears more resistant to seawater than coliform organisms, although the reverse was found under laboratory conditions. Seawater inhibited uptake of glucose and lactose by Escherichia coli and other sewage organisms. Relative heterotrophic potentials in terms of glucose and lactose uptake velocities were not significantly affected in coastal waters by the influx of bacteria and nutrients in sewage outfall effluent.
Show less - Date Issued
- 1973
- PURL
- http://purl.flvc.org/fcla/dt/13557
- Subject Headings
- Staphylococcus aureus, Marine pollution, Sewage disposal in the ocean, Sewage--Microbiology
- 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
- An Assessment of Fecal Pollution in the St. Lucie Estuary and Indian River Lagoon.
- Creator
- Perricone, Carlie S., McCarthy, Peter J., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Contamination of recreational waters with fecal waste, indicated by the presence of enterococci, can have consequences for human and ecosystem health. The difficulty in determining the extent and origin of fecal pollution in dynamic estuarine systems is compounded by contributions from sources including septic tanks and agricultural runoff. This study investigated fecal pollution at five sites with variable hydrological conditions in the St. Lucie Estuary and Indian River Lagoon. The...
Show moreContamination of recreational waters with fecal waste, indicated by the presence of enterococci, can have consequences for human and ecosystem health. The difficulty in determining the extent and origin of fecal pollution in dynamic estuarine systems is compounded by contributions from sources including septic tanks and agricultural runoff. This study investigated fecal pollution at five sites with variable hydrological conditions in the St. Lucie Estuary and Indian River Lagoon. The distribution and occurrence of enterococci was assessed using traditional cultivation. A human-associated microbial source tracking assay was validated and applied in these estuaries using qPCR. Results demonstrated a correlation between enterococci concentrations, rainfall, and salinity. The human-associated assay was sensitive and specific in the lab; however, human fecal pollution was not detected in the field even though samples contained high levels of enterococci. This study highlights the importance of expanding the range of water quality assessment.
Show less - Date Issued
- 2017
- PURL
- http://purl.flvc.org/fau/fd/FA00005023, http://purl.flvc.org/fau/fd/FA00005932
- Subject Headings
- Dissertations, Academic -- Florida Atlantic University, Indian River (Fla. : Lagoon), Saint Lucie River Estuary (Fla.), Enterococcus., Fecal matter., Estuarine pollution.
- Format
- Document (PDF)
- Title
- Collection and analyses of physical data for deep injection wells in Florida.
- Creator
- Gao, Jie., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
Deep injection wells (DIW) in Florida are regulated by the U.S. Environmental Protection Agency (USEPA) and the state of Florida through the Underground Injection Control regulations contained within the Safe Drinking Water Act. Underground injection is defined as the injection of hazardous waste, nonhazardous waste, or municipal waste below the lowermost formation containing an underground source of drinking water within one-quarter mile of the wellbore. Municipalities in Florida have been...
Show moreDeep injection wells (DIW) in Florida are regulated by the U.S. Environmental Protection Agency (USEPA) and the state of Florida through the Underground Injection Control regulations contained within the Safe Drinking Water Act. Underground injection is defined as the injection of hazardous waste, nonhazardous waste, or municipal waste below the lowermost formation containing an underground source of drinking water within one-quarter mile of the wellbore. Municipalities in Florida have been using underground injection as an alternative to surface disposal of treated domestic wastewater for nearly 40 years. The research involved collecting data as of September, 2007 on all the Class I DIWs in the state of Florida and evaluating the differences between them. The analysis found regional differences in deep well practice and canonical correlation analyses concluded that depth below the USDW is the most significant factor to prevent upward migration of the injected fluid.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/2796085
- Subject Headings
- Groundwater flow, Mathematical models, Artificial groundwater recharge, Groundwater, Pollution, Management, Deep-well disposal
- Format
- Document (PDF)
- Title
- Predicting removal efficiency of reverse osmosis membranes with respect to emerging substances of concern using a discriminant function analysis.
- Creator
- Pleitez Herrera, Fernando J., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
This paper presents the results of the spike tests performed in the alternative water supply pilot testing program for the City of Pembroke Pines. It establishes the effectiveness of a protocol that can be used to gain further insight on the rejection capacities of RO membranes. An in-depth study of the molecular descriptors affecting rejection by RO membranes is presented and used in the development of a discriminant function analysis. This analysis proved to be an effective way to predict...
Show moreThis paper presents the results of the spike tests performed in the alternative water supply pilot testing program for the City of Pembroke Pines. It establishes the effectiveness of a protocol that can be used to gain further insight on the rejection capacities of RO membranes. An in-depth study of the molecular descriptors affecting rejection by RO membranes is presented and used in the development of a discriminant function analysis. This analysis proved to be an effective way to predict the passage of Emerging Substances of Concern (ESOCs) through RO membrane. Further, a principal component (PC) analysis was performed to determine which factors accounted the largest variation in RO permeability. Additionally, this paper defines the groundwork for a discriminant analysis model that, if further developed, could serve as an important tool to predict the rejection capabilities of RO treatment when handling with ESOCs.
Show less - Date Issued
- 2012
- PURL
- http://purl.flvc.org/FAU/3355869
- Subject Headings
- Membranes (Technology), Water, Purification, Reverse osmosis process, Industrial water supply, Water, Pollution, Chemoinformatics
- Format
- Document (PDF)
- Title
- A study of the relationships between historical land use and petroleum contamination in southeastern Palm Beach County, Florida.
- Creator
- Peterson, Andrew Brian., Florida Atlantic University, Finkl, Charles W.
- Abstract/Description
-
Protection of groundwater resources in southeastern Florida is essential because of increasing demands on water quality and supply. Because water is furnished to public and private water systems from production wells that tap the non-artesian surficial aquifer, contamination of groundwater from leaking petroleum storage tanks must be curtailed. In the study, a series of land use maps is developed based on aerial photographs (1970, 1984, and 1991) for a 40 square mile area in southeastern Palm...
Show moreProtection of groundwater resources in southeastern Florida is essential because of increasing demands on water quality and supply. Because water is furnished to public and private water systems from production wells that tap the non-artesian surficial aquifer, contamination of groundwater from leaking petroleum storage tanks must be curtailed. In the study, a series of land use maps is developed based on aerial photographs (1970, 1984, and 1991) for a 40 square mile area in southeastern Palm Beach County, Florida. The locations of petroleum storage tank systems and contaminated sites are mapped. The point biserial correlation coefficient is used to examine the strength of the relationships between historical land use, storage tank system capacity, and the presence of petroleum. contamination. The results indicate no correlation between the intensity of urbanization (historical land use) and petroleum contamination and positive correlation between petroleum storage system capacity and petroleum contamination.
Show less - Date Issued
- 1995
- PURL
- http://purl.flvc.org/fcla/dt/15162
- Subject Headings
- Land use--Florida--Palm Beach County, Groundwater, Petroleum products--Underground storage--Environmental aspects, Oil pollution of soils
- Format
- Document (PDF)
- Title
- Can hatchlings exposed to beach lighting recover, and orient normally offshore?.
- Creator
- Lorne, Jacquelyn Kay, Florida Atlantic University, Salmon, Michael
- Abstract/Description
-
Artificial lighting disrupts sea turtle hatchling orientation from the nest to the sea. I studied how a light-induced landward crawl affects the ability of hatchlings to later crawl to the sea, and swim offshore from a dark beach. A brief (2 min) landward crawl had no effect on orientation, as long as waves (used as an orientation cue while swimming) were present. In the absence of waves (a flat calm sea), landward-crawling hatchlings failed to swim offshore while those crawling seaward were...
Show moreArtificial lighting disrupts sea turtle hatchling orientation from the nest to the sea. I studied how a light-induced landward crawl affects the ability of hatchlings to later crawl to the sea, and swim offshore from a dark beach. A brief (2 min) landward crawl had no effect on orientation, as long as waves (used as an orientation cue while swimming) were present. In the absence of waves (a flat calm sea), landward-crawling hatchlings failed to swim offshore while those crawling seaward were well oriented. A longer (2 h) landward crawl impaired the ability of hatchlings to crawl to the sea. These results demonstrate that previous exposure to artificial lighting compromises subsequent orientation, both on land and in the sea. On the basis of my results, I suggest several changes to current management practices, currently used when releasing misoriented turtles in the wild.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13400
- Subject Headings
- Sea turtles--Atlantic Coast (U S )--Geographical distribution, Light pollution, Animal orientation, Loggerhead turtle--Orientation, Animal navigation
- Format
- Document (PDF)
- Title
- Do embedded roadway lights protect sea turtles?.
- Creator
- Bertolotti, Lesley L., Florida Atlantic University, Salmon, Michael
- Abstract/Description
-
Pole-mounted street lighting on coastal roadways is often visible in adjacent areas. At roadways near sea turtle nesting beaches, these lights can disrupt the nocturnal orientation of hatchlings as they crawl from the nest to the sea. Our objective was to determine if an alternative lighting system (light-emitting diodes, embedded in the roadway pavement) prevented orientation disruption of loggerhead hatchlings. Hatchlings at the beach oriented normally when the embedded lights were on, or...
Show morePole-mounted street lighting on coastal roadways is often visible in adjacent areas. At roadways near sea turtle nesting beaches, these lights can disrupt the nocturnal orientation of hatchlings as they crawl from the nest to the sea. Our objective was to determine if an alternative lighting system (light-emitting diodes, embedded in the roadway pavement) prevented orientation disruption of loggerhead hatchlings. Hatchlings at the beach oriented normally when the embedded lights were on, or when all lighting was switched off. However, turtles showed poor orientation when exposed to pole-mounted street lighting. Light measurements revealed that street lighting was present at the beach, whereas embedded lighting was absent. I conclude that embedded lighting systems restrict light scatter, leaving adjacent habitats dark, and therefore protect the turtles from artificial lighting allowing for normal seafinding.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13203
- Subject Headings
- Loggerhead turtle, Animal navigation, Animal orientation, Sea turtles--Orientation, Exterior lighting--Environmental aspects, Light pollution
- Format
- Document (PDF)
- Title
- The effect of pollution prevention in wood furniture, marina and auto repair industries.
- Creator
- Shalan, Samira Ghazi., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
Since the industrial revolution, industrial operations have been accompanied with a problem: production of industrial waste, which may be toxic, ignitable, corrosive or reactive. If improperly managed this waste can pose dangerous health and environmental consequences. This study defines the meaning of pollution prevention and outlines its major categories. Three different industries: wood furniture, marina and auto repair industries where chosen to emphasize pollution prevention practices...
Show moreSince the industrial revolution, industrial operations have been accompanied with a problem: production of industrial waste, which may be toxic, ignitable, corrosive or reactive. If improperly managed this waste can pose dangerous health and environmental consequences. This study defines the meaning of pollution prevention and outlines its major categories. Three different industries: wood furniture, marina and auto repair industries where chosen to emphasize pollution prevention practices throughout their operations.
Show less - Date Issued
- 2002
- PURL
- http://purl.flvc.org/fcla/dt/12994
- Subject Headings
- Pollution prevention, Furniture industry and trade--Environmental aspects, Marinas--Environmental aspects, Automobile repair shops--Environmental aspects
- 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 Ascidian Styela plicata As a Potential Bioremediator of the Brown Tide Pelagophytes Aureoumbra lagunensis and Aureococcus anophagefferens.
- Creator
- Klarmann, Phyllis A., Hartmann, James X., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
A brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against...
Show moreA brown tide bloom of the pelagophyte Aureoumbra lagunensis caused significant impacts to north Indian River Lagoon (IRL) in 2012-2013, including seagrass die-offs, fish kills, and reduced growth and grazing of ecologically important bivalves. There is potential for another pelagophyte, Aureococcus anophagefferens, to expand into this system. Filtration rates (FR) of the pleated tunicate Styela plicata exposed to Aureoumbra lagunensis and Aureococcus anophagefferens were measured against exposure to a control alga (Tisochrysis lutea) in order to determine its potential use as a bioremediator against these harmful algal blooms (HABs). In addition, whether S. plicata might serve as a vector of HABs was studied by culturing fecal deposits. Short-term exposure to HABs significantly reduced FR, whereas long-term exposure indicates comparable cell removal compared to the control. Vector potential of S. plicata was inconclusive. Results warrant further research to determine whether S. plicata can acclimate or respond to HAB conditions over time.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004513
- Subject Headings
- Algal blooms -- Florida -- Indian River Lagoon, Cyanobacterial blooms -- Toxicology, Estuarine ecology, Indian River Lagoon (Fla.) -- Environmental aspects, Marine bioremediation, Marine ecology, Marine pollution, Water quality biological assessment
- Format
- Document (PDF)
- Title
- Modeling of gasoline emissions from stationary and mobile sources at Port Everglades.
- Creator
- Kimmlingen, Martina M., Florida Atlantic University, Scarlatos, Panagiotis (Pete) D., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
Available air quality data has been analyzed using the Industrial Source Complex Dispersion Model (ISC3). The FORTRAN program Mobile 5a was utilized to obtain the emission factors. Concerning the toxic volatile organic compounds, the simulations indicate that benzene exceeded the previous permissible air quality standard. Toluene, ethylbenzene and xylene values remained within allowable concentration levels. Long-term annual benzene emissions from stationary sources exceeded the former...
Show moreAvailable air quality data has been analyzed using the Industrial Source Complex Dispersion Model (ISC3). The FORTRAN program Mobile 5a was utilized to obtain the emission factors. Concerning the toxic volatile organic compounds, the simulations indicate that benzene exceeded the previous permissible air quality standard. Toluene, ethylbenzene and xylene values remained within allowable concentration levels. Long-term annual benzene emissions from stationary sources exceeded the former reference concentration of 0.12 mug/m 3 about five times per year, whereas the data for 8 and 24 hours were relatively low. Simulation results for the mobile sources demonstrated that the emission factor is a highly sensitive parameter. Possible realistic scenarios at Port Everglades were obtained through varying benzene concentrations. The results are plotted as concentration contours, in order to visualize areas of suspected health risk associated to air pollution. Compared to the Reference Concentration for Chronic Inhalation Exposure, EPA, the modeled results appear significantly less.
Show less - Date Issued
- 2003
- PURL
- http://purl.flvc.org/fcla/dt/13123
- Subject Headings
- Automobiles--Motors--Exhaust gas--Mathematical models, Harbors--Environmental aspects--Florida, Air--Pollution--Mathematical models, Port Everglades (Fort Lauderdale, Fla)
- Format
- Document (PDF)
- Title
- The fate of copper in flooded south Florida agricultural soils and its toxicological effects on the Florida apple snail, Pomacea paludosa.
- Creator
- Rogevich, Emily Catherine, Florida Atlantic University, Brooks, W. Randy, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Agricultural sites have been acquired under the Comprehensive Everglades Restoration Plan (CERP) for the creation of water storage areas. Copper desorption and toxicity to the Florida apple snail (Pomacea paludosa) were investigated using soils from these sites. Copper concentrations in II soils ranged from 5 to 234 mg/kg Cu dw, and when flooded, resulted in overlying water Cu concentrations from 9 to 308 11g/L Cu. Juvenile apple snails exposed to three flooded soils had high mortality and...
Show moreAgricultural sites have been acquired under the Comprehensive Everglades Restoration Plan (CERP) for the creation of water storage areas. Copper desorption and toxicity to the Florida apple snail (Pomacea paludosa) were investigated using soils from these sites. Copper concentrations in II soils ranged from 5 to 234 mg/kg Cu dw, and when flooded, resulted in overlying water Cu concentrations from 9 to 308 11g/L Cu. Juvenile apple snails exposed to three flooded soils had high mortality and decreased growth within 9 to 16 days in two ofthe three soils examined. To assess Cu toxicity to the apple snail at various life stages and water quality parameters, 96 hour acute toxicity studies were conducted. Copper was more toxic to juvenile than adult apple snails. Copper toxicity increased as pH decreased and decreased as DOC increased. Hardness had no effect on Cu toxicity to the apple snail. Copper toxicity was a function of organism age, DOC and pH. Copper accumulation by juvenile and adult apple snails was determined for multiple exposure pathways. For 28 days, juvenile snails were exposed to aqueous Cu and adult snails were exposed to Cu contaminated soil, water and food. Whole body Cu in juvenile snails increased with time. The mean Cu bioconcentration factor (BCF) for juvenile snails was 1493. For adult snails, the dietary exposure pathway resulted in the highest bioaccumulation factor (BAF). Most Cu accumulated in soft tissue. During a chronic aqueous exposure, apple snails exposed to 8-16 flg /L Cu for 9 months had high Cu accumulation and significantly reduced clutch production (8-16 flg /L) and egg hatching (16 flg/L ). Chronic Cu exposure initially decreased growth in juvenile snails, but growth rebounded by adulthood and snails appeared to acclimate to chronic Cu exposure. When apple snails with high tissue Cu were fed to redear sunfish (Lepomis microlophus) Cu transfer was minimal, suggesting that the risk of trophic transfer (bioaccumulation) of Cu from the snail to redear sunfish is low and that biomagnification is unlikely. It is uncertain if other apple snail predators would be at risk for dietary Cu transfer.
Show less - Date Issued
- 2008
- PURL
- http://purl.flvc.org/fau/fd/FA00000875
- Subject Headings
- Soil pollution--Florida, Florida applesnail--Habitat, Florida applesnail--Effect of heavy metals on, Copper--Toxicology, Ecosystem management--Florida
- 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)
