Current Search: Estuarine ecology. (x)
View All Items
(21 - 29 of 29)
Pages
- Title
- Indian River study annual report 1974-1975 volume 2.
- Creator
- Kerr, George A., Harbor Branch Oceanographic Institute, Smithsonian Institution, Link Foundation, Woods Hole Oceanographic Institution
- Date Issued
- 1974-1975
- PURL
- http://purl.flvc.org/FCLA/DT/3357418
- Subject Headings
- Indian River (Fla:Lagoon), Estuaries--Florida--Indian River (Lagoon), Estuarine ecology--Florida, Water quality--Florida
- Format
- Document (PDF)
- Title
- Indian River study annual report 1973-1974 volume 1.
- Creator
- Fehlmann, H. Adair, Young, David K., Avent, Robert M., Briel, Lawrence I., Eiseman, N. J., Gore, R. H., Jones, Robert S., Kerr, George A., Seibert, Harry H., vonZweck, Ortwin, Wilcox, J. Ross, Harbor Branch Oceanographic Institute, Smithsonian Institution, Link Foundation, Woods Hole Oceanographic Institution
- Date Issued
- 1973/1974
- PURL
- http://purl.flvc.org/FCLA/DT/3357412
- Subject Headings
- Indian River (Fla:Lagoon), Estuaries--Florida--Indian River (Lagoon), Estuarine ecology--Florida, Water quality--Florida
- Format
- Document (PDF)
- Title
- Indian River study annual report 1975-1976 volume 1.
- Creator
- Young, David K., Harbor Branch Oceanographic Institute, Smithsonian Institution, Link Foundation, Woods Hole Oceanographic Institution
- Date Issued
- 1975-1976
- PURL
- http://purl.flvc.org/FCLA/DT/3357421
- Subject Headings
- Indian River (Fla:Lagoon), Estuaries--Florida--Indian River (Lagoon), Estuarine ecology--Florida, Water quality--Florida
- Format
- Document (PDF)
- Title
- Polybrominated Diphenyl Ethers (PBDEs) in Blubber of Free-Ranging Bottlenose Dolphins (Tursiops Truncatus) from Two Southeast Atlantic Estuarine Areas.
- Creator
- Fair, Patricia A., Mitchum, Gregory, Hulsey, Thomas C., Adams, Jeffrey, Zolman, Eric, McFee, Wayne, Wirth, Ed, Bossart, Gregory D., Harbor Branch Oceanographic Institute
- Date Issued
- 2007
- PURL
- http://purl.flvc.org/FCLA/DT/2796080
- Subject Headings
- Polybrominated diphenyl ethers --Toxicology, Bottlenose dolphin --Anatomy, Estuarine ecology --South Carolina, Indian River (Fla. : Lagoon), Polychlorinated biphenyls
- Format
- Document (PDF)
- Title
- The ascidian Styela plicata as a potential bioremediator of bacterial and algal contamination of marine estuarine waters.
- Creator
- Draughon, Lisa D., Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
The tunicate Styela plicata (Ascidiacea) was investigated for its potential use in bioremediation of bacteria and microalgae blooms from estuarine waters. Salinity tolerances, filtration rate, substrate selection, and effects on digested bacteria and ichthyofaunal communities were examined. If acclimated slowly, Styela can be placed in salinities as low as 24 parts per thousand (ppt) before increased fatalities result. An immediate decrease in salinity from 32 ppt to 20 ppt was not...
Show moreThe tunicate Styela plicata (Ascidiacea) was investigated for its potential use in bioremediation of bacteria and microalgae blooms from estuarine waters. Salinity tolerances, filtration rate, substrate selection, and effects on digested bacteria and ichthyofaunal communities were examined. If acclimated slowly, Styela can be placed in salinities as low as 24 parts per thousand (ppt) before increased fatalities result. An immediate decrease in salinity from 32 ppt to 20 ppt was not detrimental at short term exposure (four days). One average-sized (~40g) Styela, exposed to 105 and 106 bacteria or microalgae mL-1, can filter as much as 4.7 L hr-1 and 3.3 L hr-1, respectively. Individual tunicate filtration rates varied from hour to hour, independent of organism size, indicating that filtration rates for this species would be better reported on a population basis rather than on an individual weight or size basis. Bacterial viability in tunicate feces was assessed by ATP analysis. Bacteria were found to be non-viable after passage through the tunicate digestive tract. Filtration of eggs or larvae of recreationally or commercially important fish is of concern. The smallest eggs (~0.6mm) reported in the Indian River Lagoon belong to Cynoscion nebulosus (spotted seatrout) and Bairdiella chrysoura (silver perch). Over the course of two hours, 72.5% of 0.5 mm glass beads (simulated fish eggs) were initially retained, but many were later expelled by the tunicates. For 1.0 mm beads, 49.4% were initially retained and for 2.0 mm beads, 43.5% were initially retained. Neither the size of the oral siphon nor the size of the overall animal was correlated to bead retention. Substrate selection was investigated using the tunicate Phallusia nigra., Newly hatched larvae preferred settling on wood (53.7%), as compared to polyethylene (30.9%), high-density polyethylene (13.0%), and polyvinyl chloride (2.4%). Overall, results of this study indicate S. plicata is very effective at removing bacteria and microalgae from estuarine waters. However, further testing is warranted regarding the unwanted removal of fish eggs and larvae before utilization of S. plicata for bioremedial purposes.
Show less - Date Issued
- 2010
- PURL
- http://purl.flvc.org/FAU/1927312
- Subject Headings
- Marine bioremediation, Estuarine ecology, Water quality management, Water quality biological assessment
- Format
- Document (PDF)
- Title
- Contribution of on-site treatment and disposal systems on coastal nutrient loading.
- Creator
- Morin, Frederic., Florida Atlantic University, Meeroff, Daniel E., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
- Abstract/Description
-
When onsite treatment and disposal systems (OSTDS) are not properly sited, they can be a potential risk to public health and a source of environmental degradation. In Florida, OSTDS location has proven to be problematic from a water resources perspective. The objective of this study is to quantify the pollutant loading contributions from OSTDS on coastal canals, with regard to nutrients and pathogens indicators (Total Coliform, E. coli, Enterococcus). Two similar single-family residential...
Show moreWhen onsite treatment and disposal systems (OSTDS) are not properly sited, they can be a potential risk to public health and a source of environmental degradation. In Florida, OSTDS location has proven to be problematic from a water resources perspective. The objective of this study is to quantify the pollutant loading contributions from OSTDS on coastal canals, with regard to nutrients and pathogens indicators (Total Coliform, E. coli, Enterococcus). Two similar single-family residential locations were identified: Dania Beach, FL (with 100% OSTDS) and Hollywood, FL (with 100% sewer). Field studies were conducted during the height of the wet and dry seasons. During the wet season, surface water quality of the canal was affected by an OSTDS contribution with higher levels of nutrients and pathogens indicators. During the dry season, no OSTDS impact was detected. OSTDS appear to work properly during the dry season.
Show less - Date Issued
- 2005
- PURL
- http://purl.flvc.org/fcla/dt/13224
- Subject Headings
- Estuarine ecology, Sewage disposal--Florida, Sewage--Purification--Nitrogen removal, Land treatment of wastewater--Florida
- 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
- The effect of water conditions on larval development of Nematostella vectensis.
- Creator
- Guidry, Alix Marie, Florida Atlantic University, Baldwin, John D.
- Abstract/Description
-
This project tested the effects of water conditions on developmental rates of larvae of the estuarine sea anemone Nematostella vectensis . Egg masses were collected immediately following fertilization and placed in solutions with different salinities and maintained in a temperature-controlled water bath. Every twelve hours, embryonic development was checked for progression through different morphological stages of development. Comparison of regression analyses of larval development at each...
Show moreThis project tested the effects of water conditions on developmental rates of larvae of the estuarine sea anemone Nematostella vectensis . Egg masses were collected immediately following fertilization and placed in solutions with different salinities and maintained in a temperature-controlled water bath. Every twelve hours, embryonic development was checked for progression through different morphological stages of development. Comparison of regression analyses of larval development at each temperature increment indicated that both temperature and salinity affected the rate of development; development was slower in lower conditions and faster at higher salinities and temperatures, with extreme conditions inducing deleterious effects. The suggested ideal conditions for these larvae are a salinity range of 12.5--20% and a temperature range of 22--24C. These parameters provide a foundation from which a standardized testing method may be established, using N. vectensis larval development.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13169
- Subject Headings
- Marine animals--Larvae--Effect of temperature on, Sea anemones--Larvae--Effect of temperature on, Marine ecology, Water temperature, Estuarine ecology
- Format
- Document (PDF)
- Title
- Alkaline Phosphatase Activity of Seagrass and Water Column Fractions in Florida Bay.
- Creator
- Kletou, Demetris, Koch, Marguerite, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Few phosphorus (P) depleted coastal marine ecosystems have been examined for their capacity to hydrolyze phosphomonoesters (PMEs). The purpose of this study was to examine seasonal APA partitioning between water column fractions (phytoplankton, bacteria and freely dissolved) and benthic autotrophs in Florida Bay, a P limited shallow estuary using low fluorescent substrate (MUF-P) concentrations (≤2.0 μm). APA was higher at the western and northcentral (751 and 695 nmol L^-1 h^-1) sites and...
Show moreFew phosphorus (P) depleted coastal marine ecosystems have been examined for their capacity to hydrolyze phosphomonoesters (PMEs). The purpose of this study was to examine seasonal APA partitioning between water column fractions (phytoplankton, bacteria and freely dissolved) and benthic autotrophs in Florida Bay, a P limited shallow estuary using low fluorescent substrate (MUF-P) concentrations (≤2.0 μm). APA was higher at the western and northcentral (751 and 695 nmol L^-1 h^-1) sites and driven by cyanobacterial blooms, compared to the P limited northeastern (359 nmol L^-1 h^-1) site The free dissolved fraction (<0.2 μm) accounted for the most APA (~50%), followed by the phytoplankton (>1 μm; 30%) and bacteria fraction (<0.2-> 1.2 μm; 8%). Thaiassia testudinum leaves with their associated epiphytes contributed modestly to water column APA (14 and 20%), and only during non-bloom conditions. Rapid hydrolysis of PMEs (undetected in most samplings) in Florida Bay is probably driven by high concentration of organic substrates for microbial and cyanobacterial activity which results from the close association of the shallow water column with the underlying seagrass community and adjacent Everglades wetlands.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000780
- Subject Headings
- Coastal ecology--Florida, Coastal zone management--Florida, Estuarine sediments--Florida--Florida Bay, Aquaculture--Environmental aspects--Florida
- Format
- Document (PDF)
