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Title: Isolation, Analysis and Origin of Bioactive Diterpenes in Pseudopterogorgia acerosa.
Creator: Kate, Abhijeet S., Florida Atlantic University, Kerr, Russell G., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description: Nature has served human kind m many ways, one of which is a source of medicines. Natural products from marine sources represent a relatively new area of research and have shown tremendous potential as a source of new chemical entities in drug discovery. Caribbean gorgomans corals of the genus Pseudopterogorgia have been shown to produce a variety of chemically interesting and biologically significant secondary metabolites. ln this dissertation, the Caribbean coral Pseudopterogorgia acerosa...
Show moreNature has served human kind m many ways, one of which is a source of medicines. Natural products from marine sources represent a relatively new area of research and have shown tremendous potential as a source of new chemical entities in drug discovery. Caribbean gorgomans corals of the genus Pseudopterogorgia have been shown to produce a variety of chemically interesting and biologically significant secondary metabolites. ln this dissertation, the Caribbean coral Pseudopterogorgia acerosa has been investigated for the presence of novel diterpenes and these compounds were found to belong to three different classes: pseudopteranoids, bis-pseudopteranoids and lipidyl pseudopteranes. Nine of these were new compounds. The structural elucidation of these compounds was performed using spectroscopic means such as l D and 20 NMR, and mass spectroscopy. There is growing evidence that secondary metabolites isolated from manne invertebrates may actually be produced by a bacterial symbiont. The research studies in our laboratory regarding the source of diterpenes in the selected gorgonian corals suggested a bacterial origin. The hypothesis that coral associated bacteria are the source of diterpenes in the coral P. acerosa, was evaluated using the series of experiments and evidence supported this biosynthetic origin. A study comparing the "gall" tissue and healthy coral tissue in terms of diterpene content and culturable bacterial communities showed that different groups of diterpenes were concentrated in different coral tissue types. It was also observed that the bacterial populations associated with the "gall" and healthy tissues were considerably different. Furthermore, observed specificity in antimicrobial activity of certain groups of compounds against bacteria isolated from the same coral suggested the ecological role of these compounds. This work with "gall" tissue supports the hypothesis that diseased coral tissue represents an excellent source of bioactive natural products for drug discovery. Additionaly, a simple LC-MS method was developed for the analysis of anticancer drug carmustine in plasma.
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Date Issued: 2008
PURL: http://purl.flvc.org/fau/fd/FA00000864
Subject Headings: Marine pharmacology, Coral reef ecology--Caribbean Area, Natural products--Synthesis
Format: Document (PDF)

Title: Sulfur-35 incorporation in the seagrass Thalassia testudinum under oxic and anoxic conditions.
Creator: Peters, Jasmine Star., Florida Atlantic University, Koch, Marguerite
Abstract/Description: Currently, there is a great deal of interest in the role of sulfur in the seagrass ecosystems and for sulfide, a known phytotoxin, in particular. This research used a 35S tracer technique to examine sulfur metabolism in the seagrass Thalassia testudinum. The uptake of the 35S radiotracer was documented at similar rates under both oxic and anoxic treatments. The highest total radioactivity was in root and rhizome tissue, as compared to the leaves. 35S translocation from roots to leaves was...
Show moreCurrently, there is a great deal of interest in the role of sulfur in the seagrass ecosystems and for sulfide, a known phytotoxin, in particular. This research used a 35S tracer technique to examine sulfur metabolism in the seagrass Thalassia testudinum. The uptake of the 35S radiotracer was documented at similar rates under both oxic and anoxic treatments. The highest total radioactivity was in root and rhizome tissue, as compared to the leaves. 35S translocation from roots to leaves was found to be more efficient in young versus mature leaves. Total sulfur uptake was estimated and found to be significantly different between root and rhizome tissue under oxic conditions. In the anoxic treatment, 1 mM sulfide may have been a threshold, at which the seagrass showed reduced uptake of 35S into the below-ground tissue. While the plants assisted in the production of sulfide in this experiment, sulfide accumulation may inhibit 35S uptake. This is counter to the idea of increased sulfide intrusion under sediment hypoxia. This study represents the first attempt to use 35S to trace sulfur incorporation into seagrass; further research will be required to understand the complex sulfur biochemistry of these important marine plants using this method.
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Date Issued: 2006
PURL: http://purl.flvc.org/fcla/dt/13385
Subject Headings: Seagrasses--Ecology, Sulfates--Physiological effect, Plant morphology, Marine sediments
Format: Document (PDF)

Title: ENVIRONMENTAL INFLUENCES ON COMMON SNOOK (CENTROPOMUS UNDECIMALIS) MOVEMENT IN THE ST. LUCIE ESTUARY.
Creator: Kleiman, Lauren E., Baldwin, John, Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
Abstract/Description: Estuarine ecosystems are dynamic habitats, where the convergence of marine and freshwater results in constant fluxes in environmental abiotic parameters. Organisms must balance these variations within their optimal range to minimize physiological costs, often by movement from unsuitable to more suitable areas. Additional disruptions to ecosystem balances, such as anthropogenic hydrologic discharges, further alter environmental conditions and may cause population-wide movement responses of...
Show moreEstuarine ecosystems are dynamic habitats, where the convergence of marine and freshwater results in constant fluxes in environmental abiotic parameters. Organisms must balance these variations within their optimal range to minimize physiological costs, often by movement from unsuitable to more suitable areas. Additional disruptions to ecosystem balances, such as anthropogenic hydrologic discharges, further alter environmental conditions and may cause population-wide movement responses of mobile organisms. Responses to anthropogenic and natural fluctuations can differ based on time of year, life history stage, or individual characteristics. These ecologically-balanced dynamics are difficult to model. In this study, I examined variability in estuarine environmental data and common snook (Centropomus undecimalis) movement responses to anthropogenic and natural fluctuations in the environment in a managed waterway. ARIMA time series models were tested as a method of modeling variability in environmental parameters. Monthly variance was well described throughout most of the estuary, especially when the interannual and intra-annual patterns were stable, indicating that these models are a good method for these types of data and could be appropriate for forecasting. Euryhaline sportfish movement responses to high discharge events in a managed waterway were observed with passive acoustic telemetry and did not show large-scale, population-wide consistency. Responses were variable between and within individuals, but individual characteristics appear to have influenced behavior in response to disturbances. Thus, these sportfish populations may be more resilient to this type of disturbance than previously hypothesized. Generalized additive mixed effects models showed that the distribution and movement of individual fishes varied in response to multiple natural and anthropogenic factors, and there was no primary driver. The understanding of the relationships among the distribution and movement of fishes and abiotic and anthropogenic factors can guide management of waterways and provide insight into how changes will affect abiotic factors and communities.
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Date Issued: 2022
PURL: http://purl.flvc.org/fau/fd/FA00013995
Subject Headings: Snook, Saint Lucie River Estuary (Fla.), Estuarine ecology, Underwater acoustic telemetry
Format: Document (PDF)

Title: PORIFERA BIODIVERSITY IN THE INDIAN RIVER LAGOON: EVALUATING THE LATITUDINAL ECOTONE AND SIMILARITIES WITH SAINT LUCIE REEF.
Creator: Babbe, Greer, Chaves-Fonnegra, Andia, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description: Sponges (Phylum Porifera) are hardy organisms persisting and predicted to become more dominant world-wide under climate change scenarios. However, we lack baseline knowledge on sponge biodiversity in transitional areas (subtropical to warm-temperate) that are more susceptible to climate change such as The Indian River Lagoon (IRL) (estuary) and Saint Lucie Reef (northern most coral reef) ecosystems in south Florida. The aims of this master’s thesis are to 1) evaluate if sponge assemblages...
Show moreSponges (Phylum Porifera) are hardy organisms persisting and predicted to become more dominant world-wide under climate change scenarios. However, we lack baseline knowledge on sponge biodiversity in transitional areas (subtropical to warm-temperate) that are more susceptible to climate change such as The Indian River Lagoon (IRL) (estuary) and Saint Lucie Reef (northern most coral reef) ecosystems in south Florida. The aims of this master’s thesis are to 1) evaluate if sponge assemblages reflect the previously defined ecotone between subtropical and warm-temperate biomes in the IRL (Chapter one), 2) determine how porifera communities are associated to their respective environment (temperature, water velocity, photosynthetically active radiation, carbonate chemistry, and nutrients) in the IRL and St. Lucie Reef (Chapter two), and 3) establish a distribution baseline for future studies aiming to assess Porifera range shifts during climate change (Chapter one and two). Porifera biodiversity surveys across the IRL and Saint Lucie reef were carried out at different spatial and time scales. Environmental parameters (ocean acidification, temperature and eutrophication) were obtained and compared for sites in Fort Pierce Inlet and St Lucie Reef. Chapter one results show that sponge assemblages do not reflect the previously defined ecotone between subtropical and warm-temperate biomes in the IRL, instead they structure in relation to the inlets (distance from the inlet). The most diverse sponge assemblages are found in Sebastian, Fort Pierce, and Jupiter Inlets, and are significant different among habitats; oyster reefs host a unique assemblage of excavating sponges.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014174
Subject Headings: Sponges--Ecology, Porifera, Indian River (Fla. : Lagoon), Saint Lucie Inlet (Fla.)
Format: Document (PDF)

Title: NITROGEN ENRICHMENT, EUTROPHICATION, AND BOTTOM-UP TROPHIC SHIFTS IN ECOSYSTEMS OF THE INDIAN RIVER LAGOON.
Creator: Brewton, Rachel A., Lapointe, Brian, Florida Atlantic University, Department of Geosciences, Charles E. Schmidt College of Science
Abstract/Description: Eutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and...
Show moreEutrophication of urbanized estuaries is a global issue that continues to worsen as coastal development increases. The Indian River Lagoon (IRL) on Florida’s east-central coast is a eutrophic estuary that is experiencing harmful algal blooms of macroalgae and phytoplankton, as well as widespread seagrass losses. This is concerning as seagrasses provide many ecosystem services, including the provision of essential habitat. These alterations in benthic cover can have ecosystem level effects and require further investigation. Thus, drivers and effects of primary producer alterations in the IRL were investigated through analysis of long-term monitoring data, field surveys of faunal densities inhabiting macroalgae and bare bottom habitats, and stable nitrogen isotope (δ15N) analyses of primary producers, primary consumers, and secondary consumers. Long-term monitoring data from the northern IRL (NIRL) and Banana River Lagoon (BR) demonstrated there have been major seagrass losses coupled with increases in occurrence of the rhizophytic green macroalgae Caulerpa prolifera, which is now the dominant benthic cover in many locations. Multivariate analyses of long-term monitoring data spanning 2011-2020 suggested that the carbon to phosphorus ratio (C:P) of macroalgae is an important factor related to annual changes in benthic cover in the NIRL and BR; increased P-availability is correlated with these primary producer shifts. In situ collections of macroinvertebrates and resident fishes showed the current function and importance of macroalgae as habitat in the NIRL and BR, particularly in the relative absence of seagrass.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014231
Subject Headings: Indian River (Fla. : Lagoon), Estuarine eutrophication, Nitrogen, Harmful Algal Bloom, Estuarine ecology
Format: Document (PDF)

Title: Vertical Ecology and Diversity of Melamphaes (Family Melamphaidae) in the Northern Gulf of Mexico Following the Deepwater Horizon Oil Spill.
Creator: Howard, Natalie, Moore, Jon A., Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description: The Deepwater Horizon Oil Spill had widespread impacts that were seen across the surface of the ocean, deep-sea, and seafloor. To assess damages, NOAA and GoMRI established the Offshore Nekton Sampling and Analysis Program (ONSAP) and the Deep Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND) projects. This response effort would create a vast dataset and collection of samples to aid in understanding the deep-sea of the northern Gulf of Mexico. Genus Melamphaes (Family Melamphaidae), are...
Show moreThe Deepwater Horizon Oil Spill had widespread impacts that were seen across the surface of the ocean, deep-sea, and seafloor. To assess damages, NOAA and GoMRI established the Offshore Nekton Sampling and Analysis Program (ONSAP) and the Deep Pelagic Nekton Dynamics of the Gulf of Mexico (DEEPEND) projects. This response effort would create a vast dataset and collection of samples to aid in understanding the deep-sea of the northern Gulf of Mexico. Genus Melamphaes (Family Melamphaidae), are a group of minimally characterized and understudied fish. This thesis will assess vertical ecology and migratory patterns, variations in specimen size and sampling gear, and introduce species that are newly identified to inhabit the area. The findings suggest that majority of Melamphaes participate in diel vertical migration and sampling equipment has significant impacts on specimen size. Four unreported species of Melamphaes have now been documented in this region, increasing previously reported diversity.
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Date Issued: 2023
PURL: http://purl.flvc.org/fau/fd/FA00014348
Subject Headings: BP Deepwater Horizon Explosion and Oil Spill, 2010, Mexico, Gulf of, Melamphaidae, Aquatic ecology
Format: Document (PDF)

Title: Post-fire Succession and Carbon Storage in the Northern Everglades.
Creator: Reger, Lisa Marie, Benscoter, Brian, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description: Fire plays a key role in the ecology of the Everglades and is a ubiquitous tool for managing the structure, function, and ecosystem services of the Greater Everglades watershed. Decades of hydrologic modifications have led to the alteration of plant community composition and fire regime in much of the Everglades. To create a better understanding of post-fire recovery in sawgrass (Cladium jamaicense) communities, sawgrass marshes in the northern Everglades were studied along a chronosequence...
Show moreFire plays a key role in the ecology of the Everglades and is a ubiquitous tool for managing the structure, function, and ecosystem services of the Greater Everglades watershed. Decades of hydrologic modifications have led to the alteration of plant community composition and fire regime in much of the Everglades. To create a better understanding of post-fire recovery in sawgrass (Cladium jamaicense) communities, sawgrass marshes in the northern Everglades were studied along a chronosequence of time since fire and along a nutrient gradient. Areas closer to a water nutrient source and with fewer mean days dry contained greater total and dead aboveground graminoid biomass whereas live graminoid biomass was greater in areas with less time since fire and with fewer days dry. Post-fire characteristics of sawgrass marshes can provide insight on the effectiveness of fire management practices in the maintenance and restoration of quality habitat in the northern Everglades.
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Date Issued: 2016
PURL: http://purl.flvc.org/fau/fd/FA00004625, http://purl.flvc.org/fau/fd/FA00004625
Subject Headings: Everglades National Park (Fla.)--Environmental conditions., Swamp ecology--Florida--Everglades., Restoration ecology--Florida--Everglades., Forest fires--Florida--Everglades., Prescribed burning--Florida--Everglades., Ecosystem management--Florida--Everglades.
Format: Document (PDF)

Title: A Prayer for the Earth: Discovering a New Cosmological Vision through a Reading of Linda Hogan's Power and Gregory Maguire's Wicked from an Ecofeminist, EarthCentered and Spiritual Perspective.
Creator: McCabe, Casey Elizabeth, Caputi, Jane, Florida Atlantic University
Abstract/Description: Linda Hogan's Power and Gregory Maguire's Wicked are two works of literature that encompass a process of raising and transforming consciousness about humans' relationships with each other and with the Earth and elemental energies. Both can be considered prayers to and for the world. The goal of this thesis is to highlight and explore themes of spirituality, ecofeminism, environmental justice, anti-colonialism, indigenous philosophies regarding sense of place, human and animal rights, and...
Show moreLinda Hogan's Power and Gregory Maguire's Wicked are two works of literature that encompass a process of raising and transforming consciousness about humans' relationships with each other and with the Earth and elemental energies. Both can be considered prayers to and for the world. The goal of this thesis is to highlight and explore themes of spirituality, ecofeminism, environmental justice, anti-colonialism, indigenous philosophies regarding sense of place, human and animal rights, and feminist critical theories of race and gender through the artistic, creative and powerful writing of these authors. These works both reflect and participate in ongoing processes of political and spiritual change away from patriarchal, Eurocentric and imperial culture. By applying concepts including F. Marina Schauffler's "Ecological Conversion" and Gloria Anzaldua's "Mestiza Consciousness," I will show how the novels' characters, though very differently, encompass these transformations of consciousness.
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Date Issued: 2008
PURL: http://purl.flvc.org/fau/fd/FA00000938
Subject Headings: Hogan, Linda,--1964---Power--Criticism and interpretation, Maguire, Gregory--Wicked--Criticism and interpretation, Ecofeminism, Human ecology in literature, Philosophy of nature, Ecology--Moral and ethical aspects
Format: Document (PDF)

Title: Climate change and the molecular ecology of arctic marine mammals.
Creator: O'Corry-Crowe, Gregory
Date Issued: 2008
PURL: http://purl.flvc.org/FCLA/DT/1055929
Subject Headings: Marine mammals --Arctic regions., Wildlife management --Arctic regions., Mammal populations --Arctic regions., Molecular ecology., Climatic changes --Arctic regions.
Format: Document (PDF)

Title: Indian River study annual report 1973-1974 volume 2.
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/3357415
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 1974-1975 volume 1.
Creator: Young, David K., Harbor Branch Oceanographic Institute, Smithsonian Institution, Link Foundation, Woods Hole Oceanographic Institution
Date Issued: 1974-1975
PURL: http://purl.flvc.org/FCLA/DT/3357416
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 2.
Creator: Kerr, George A., Harbor Branch Oceanographic Institute, Smithsonian Institution, Link Foundation, Woods Hole Oceanographic Institution
Date Issued: 1975-1976
PURL: http://purl.flvc.org/FCLA/DT/3357422
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 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: Experimental studies of decapod and fish predation on seagrass macrobenthos.
Creator: Nelson, Walter G., Harbor Branch Oceanographic Institute
Date Issued: 1981
PURL: http://purl.flvc.org/FCLA/DT/3350839
Subject Headings: Decapoda (Crustacea), Predation (Biology), Lagodon rhomboids, Blue crab, Palaemonetes, Penaeus duorarum, Seagrasses --Ecology, Indian River (Fla.: Lagoon)
Format: Document (PDF)

Title: Transport over a narrow shelf: Exuma Cays, Bahamas.
Creator: Smith, Ned P.
Date Issued: 2004
PURL: http://purl.flvc.org/FCLA/DT/2795920
Subject Headings: Exuma Islands, Bahamas --Maps, Continental shelf, Continental shelf --Caribbean Area, Marine ecology, Ocean temperature --Caribbean Sea --Charts, diagrams, etc.
Format: Document (PDF)

Title: Captive breeding for the gastropod conch (Strombus spp.).
Creator: Shawl, Amber L., Davis, Megan, Corsaut, Jerry
Date Issued: 2003
PURL: http://purl.flvc.org/FCLA/DT/2171956
Subject Headings: Gastropoda --Reproduction, Queen conch, Fisheries --Caribbean Sea --Congresses, Fisheries --Mexico, Gulf of --Congresses, Gastropoda --Eggs --Identification, Marine ecology --Experiments
Format: Document (PDF)

Title: Weather and hydrographic conditions associated with coral bleaching: Lee Stocking Island, Bahamas.
Creator: Smith, Ned P.
Date Issued: 2001
PURL: http://purl.flvc.org/FCLA/DT/2795322
Subject Headings: Coral bleaching --Caribbean Sea, Coral reefs and islands --Caribbean Sea, Coral reef ecology --Research, Oceanography --Caribbean Sea --Observations
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)

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