Current Search: Corals (x)
Pages
-
-
Title
-
The molluscan community associated with the scleractinian coral Oculina varicosa.
-
Creator
-
Reed, John K., Mikkelsen, Paula M.
-
Date Issued
-
1987
-
PURL
-
http://purl.flvc.org/FCLA/DT/3172767
-
Subject Headings
-
Scleractinia, Mollusks, Invertebrate communities, Symbiosis, Corals
-
Format
-
Document (PDF)
-
-
Title
-
In situ growth rates of the scleractinian coral Oculina Varicosa occurring with zooxanthellae on 6-M reefs and without on 80-M banks.
-
Creator
-
Reed, John K.
-
Date Issued
-
1982
-
PURL
-
http://purl.flvc.org/fau/fd/FA00007028
-
Subject Headings
-
Florida, Oculinidae, Scleractinian corals, Growth, Zooxanthella
-
Format
-
Document (PDF)
-
-
Title
-
Harmful algae on tropical coral reefs: Bottom-up eutrophication and top-down herbivory.
-
Creator
-
Littler, Mark M., Littler, Diane S., Brooks, Barrett L., Harbor Branch Oceanographic Institute
-
Date Issued
-
2006
-
PURL
-
http://purl.flvc.org/FCLA/DT/2875923
-
Subject Headings
-
Algae, Eutrophication, Animal-plant relationships, Corals
-
Format
-
Document (PDF)
-
-
Title
-
Tubastrine, a new guanidinostyrene from the coral Tubastrea aurea.
-
Creator
-
Sakai, R., Higa, T., Harbor Branch Oceanographic Institute
-
Date Issued
-
1987
-
PURL
-
http://purl.flvc.org/FCLA/DT/3343809
-
Subject Headings
-
Coral, Antiviral agents, Herpes simplex virus, Rhabdoviruses
-
Format
-
Document (PDF)
-
-
Title
-
A cembranolide diterpene farnesyl protein transferase inhibitor from the marine soft coral Lobophytum cristagalli.
-
Creator
-
Coval, S. J., Patton, R. W., Petrin, J. M., James, L., Rothofsky, M. L., Lin, S. L., Patel, Mahesh, Reed, John K., McPhail, A. T., Bishop, W. R.
-
Date Issued
-
1996
-
PURL
-
http://purl.flvc.org/FCLA/DT/3331913
-
Subject Headings
-
Corals, Alcyoniidae, Ras proteins, Diterpenes, Antineoplastic agents
-
Format
-
Document (PDF)
-
-
Title
-
CLIMATE CHANGE AND OCEAN ACIDIFICATION EFFECTS ON TROPICAL REEF MACROALGAE.
-
Creator
-
McNicholl, Conall, Koch, Marguerite S., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
-
Abstract/Description
-
Tropical marine macroalgae perform an essential role in coral reef function and health, however, their persistence in a rapidly changing ocean remains uncertain. The rise in sea surface temperatures and decrease in pH (ocean acidification = OA) are predicted to have damaging effects on marine calcifiers. Calcifying macroalgae have varied, often negative, responses to these conditions, however our lack of understanding about the mechanisms involved with calcification prevent us from...
Show moreTropical marine macroalgae perform an essential role in coral reef function and health, however, their persistence in a rapidly changing ocean remains uncertain. The rise in sea surface temperatures and decrease in pH (ocean acidification = OA) are predicted to have damaging effects on marine calcifiers. Calcifying macroalgae have varied, often negative, responses to these conditions, however our lack of understanding about the mechanisms involved with calcification prevent us from interpreting these results fully. Thus, I conducted a series of experiments on five calcifying species, utilizing microsensors, radioisotopes, and mesocosms, in an attempt to define biotic and abiotic mechanisms involved in calcification and dissolution under OA. Microsensor work demonstrated that all species elevate the thalli surface pH 2-3X higher under OA, which promoted calcification. The use of a photosynthetic inhibitor revealed species-specific light-triggered thalli pH control that stimulated calcification, indicating strong biotic control over calcification. When exposed to OA conditions, stronger organismal control over calcification was shown to maintain calcification in the light. A major gap in our understanding of calcification under OA is whether it affects organismal capacity to form new calcium carbonate, or if dissolution occurs, reducing calcification rates. Using radioisotopes, I found that the ability to form new calcium carbonate under OA in the light was not affected in any species. This suggested that species with reduced net calcification were actually experiencing dissolution. This study also highlighted that all species were experiencing dissolution in the dark under OA. Finally, in a short-term growth experiment, I examined the combined effects of OA and increased temperature and found complex responses in species that are negatively affected by OA. This included a crustose coralline that appears to have an additive negative effect where temperature enhances the effect of OA but also a species that exhibited a negative effect which was evidently offset with increased temperature. Here, I define distinct abiotic (light, temperature, dissolution) and biotic (proton pump & photosynthesis), that are essential for understanding macroalgae persistence on future coral reefs.
Show less
-
Date Issued
-
2019
-
PURL
-
http://purl.flvc.org/fau/fd/FA00013397
-
Subject Headings
-
Coral reefs, Seaweed, Climate Change, Ocean acidification
-
Format
-
Document (PDF)
-
-
Title
-
Coral-Algal Symbioses in Mesophotic Montastraea cavernosa in the Gulf of Mexico.
-
Creator
-
Polinski, Jennifer, Voss, Joshua, Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
-
Abstract/Description
-
Mesophotic reefs represent biodiverse ecosystems that may act as a refuge for depth-generalist coral species threatened in shallow habitats. Despite the importance of coral-algal symbioses, few studies focus on mesophotic zooxanthellae assemblages and their influence on connectivity. This study compared zooxanthellae in Montastraea cavernosa at shallow and mesophotic depths at Flower Garden Banks National Marine Sanctuary and McGrail Bank. Mesophotic corals contained more zooxanthellae and...
Show moreMesophotic reefs represent biodiverse ecosystems that may act as a refuge for depth-generalist coral species threatened in shallow habitats. Despite the importance of coral-algal symbioses, few studies focus on mesophotic zooxanthellae assemblages and their influence on connectivity. This study compared zooxanthellae in Montastraea cavernosa at shallow and mesophotic depths at Flower Garden Banks National Marine Sanctuary and McGrail Bank. Mesophotic corals contained more zooxanthellae and more chlorophyll a and c2 per unit area coral. Increased zooxanthellae within mesophotic corals may represent an adaptive strategy to optimize light capture in low-light environments. Genetic profiles for zooxanthellae assemblages from shallow and mesophotic corals showed similar diversity across banks and between depths. The dominant sequence making up assemblages was identified as Symbiodinium type C1. Similar assemblage diversity suggests that zooxanthellae assemblages will not limit connectivity potential between shallow and mesophotic corals at these reefs.
Show less
-
Date Issued
-
2016
-
PURL
-
http://purl.flvc.org/fau/fd/FA00004665, http://purl.flvc.org/fau/fd/FA00004665
-
Subject Headings
-
Adaptation (Biology), Coral reef biology, Coral reef ecology -- Research, Coral reefs and islands -- Monitoring, Corals -- Habitat, Marine biodiversity, Marine resources conservation
-
Format
-
Document (PDF)
-
-
Title
-
FOOD WEB MODELING TO ASSESS INTERACTIONS BETWEEN ARTIFICIAL REEFS AND NATURAL REEFS.
-
Creator
-
McNamee, Elizabeth A., Hughes, Colin, Florida Atlantic University, Department of Environmental Sciences, Charles E. Schmidt College of Science
-
Abstract/Description
-
The effect of artificial reefs on natural reefs is poorly understood. This study focused on Aquarius Reef Base (ARB), an underwater habitat offshore of Key Largo, Florida, and 14 natural reef sites spanning 4 habitats, on the surrounding Conch Reef. Food web models were created for ARB and natural reef habitats. Biomass at each habitat was quantified by fish surveys. Using Ecopath, species were organized into functional groups with supporting data from previous research for other inputs. ARB...
Show moreThe effect of artificial reefs on natural reefs is poorly understood. This study focused on Aquarius Reef Base (ARB), an underwater habitat offshore of Key Largo, Florida, and 14 natural reef sites spanning 4 habitats, on the surrounding Conch Reef. Food web models were created for ARB and natural reef habitats. Biomass at each habitat was quantified by fish surveys. Using Ecopath, species were organized into functional groups with supporting data from previous research for other inputs. ARB’s food web was found to have a large predator biomass with insufficient prey biomass to sustain the population, suggesting that these predators must forage on nearby natural reefs where the predator/prey ratio is smaller. Between 0.57km2 and 1.79km2 of natural reef is estimated to be a sufficient spatial subsidy for the large predatory biomass at ARB when the biomass is added as determined by the seascape around the artificial reef.
Show less
-
Date Issued
-
2021
-
PURL
-
http://purl.flvc.org/fau/fd/FA00013798
-
Subject Headings
-
Artificial reefs, Coral reefs, Food chains (Ecology)
-
Format
-
Document (PDF)
-
-
Title
-
Chemoenzymatic synthesis of 9,11-secosteroids using an enzyme extract from a marine coral.
-
Creator
-
Rodriguez, Lesbeth Caridad., Florida Atlantic University, Kerr, Russell G.
-
Abstract/Description
-
9,11-Secogorgosterol, a secondary metabolite from the gorgonian Pseudopterogorgia americana, exhibits inhibitory activity against protein kinase C, and potent anti-proliferative and anti-inflammatory activity. An efficient method for the production of 9,11-secogorgosterol has been developed and optimized using an enzyme extract from the gorgonian P. americana. The gorgonian also produces two other 9,11-secosteroids which have marked differences in their side chains and nuclei, which suggested...
Show more9,11-Secogorgosterol, a secondary metabolite from the gorgonian Pseudopterogorgia americana, exhibits inhibitory activity against protein kinase C, and potent anti-proliferative and anti-inflammatory activity. An efficient method for the production of 9,11-secogorgosterol has been developed and optimized using an enzyme extract from the gorgonian P. americana. The gorgonian also produces two other 9,11-secosteroids which have marked differences in their side chains and nuclei, which suggested that the enzymes responsible for their production were likely relatively nonspecific. Novel 9,11-secosteroids have been synthesized using the enzyme extract from the gorgonian.
Show less
-
Date Issued
-
1997
-
PURL
-
http://purl.flvc.org/fcla/dt/15431
-
Subject Headings
-
Steroids, Enzymes--Synthesis, Alcyonacea, Corals
-
Format
-
Document (PDF)
-
-
Title
-
Artificial reef morphology: Relationship to fish recruitment and community structure.
-
Creator
-
Lea, Barbara Chudzik, Florida Atlantic University, Courtenay, Walter R. Jr., Bourne, Godfrey R., Charles E. Schmidt College of Science, Department of Biological Sciences
-
Abstract/Description
-
Rock and coral reef fishes are known to select their habitat, and selection oftentimes involves the settlement of pelagic larval stages. Thus, I examined the short-term temporal relationship between artificial reef morphology and the composition of warm-water reef fish assemblages 30 m offshore of the Town of Palm Beach, Florida. Correlations were found between reef height and total fish abundance and species richness. Reef height was also correlated with log transformed numbers of juveniles....
Show moreRock and coral reef fishes are known to select their habitat, and selection oftentimes involves the settlement of pelagic larval stages. Thus, I examined the short-term temporal relationship between artificial reef morphology and the composition of warm-water reef fish assemblages 30 m offshore of the Town of Palm Beach, Florida. Correlations were found between reef height and total fish abundance and species richness. Reef height was also correlated with log transformed numbers of juveniles. Horizontal opening size showed an inverse correlation with species richness and a weak inverse trend with juvenile abundance. Furthermore, vertical openings were directly proportional to juvenile and total fish abundance, and to species richness. Piscivore abundance was weakly influenced by presence and dimensions of vertical crevices. Thus, artificial reefs with many varied-sized vertical crevices are most desirable for attracting juvenile warm-water reef fishes.
Show less
-
Date Issued
-
1994
-
PURL
-
http://purl.flvc.org/fcla/dt/15063
-
Subject Headings
-
Artificial reefs, Coral reef fishes--Morphology
-
Format
-
Document (PDF)
-
-
Title
-
Isolation and Biomimetic Synthesis of Marine Natural Products from the Gorgonian Briareum Asbestinum.
-
Creator
-
Simpson, Johnathon, West, Lyndon M., Florida Atlantic University, Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science
-
Abstract/Description
-
Throughout history, natural products have produced a plethora of biologically active compounds that have established applications in medicine, biology, and pharmacy. The exploration for improved cytotoxic agents has continued to be a crucial path in natural products drug discovery. The focal point of this thesis sheds light on the biosynthetic relationship between the two distinct classes of briarane diterpenoids, the γ-lactone briarane and the briareolate esters. Additionally, this study...
Show moreThroughout history, natural products have produced a plethora of biologically active compounds that have established applications in medicine, biology, and pharmacy. The exploration for improved cytotoxic agents has continued to be a crucial path in natural products drug discovery. The focal point of this thesis sheds light on the biosynthetic relationship between the two distinct classes of briarane diterpenoids, the γ-lactone briarane and the briareolate esters. Additionally, this study elaborates on the discovery and elucidation of structurally unique secondary metabolites from the gorgonian coral Briareum asbestinum. The first chapter of this thesis provides a review of the development and discovery of diverse secondary metabolites. In addition, this chapter describes the role of natural products in drug discovery and summarizes the research progress in marine natural product chemistry in conjunction with a detailed overview of the current marine-derived pharmaceuticals.
Show less
-
Date Issued
-
2021
-
PURL
-
http://purl.flvc.org/fau/fd/FA00013857
-
Subject Headings
-
Marine natural products, Diterpenoids, Biomimetics, Soft corals
-
Format
-
Document (PDF)
-
-
Title
-
STONY CORAL TISSUE LOSS DISEASE SUSCEPTIBILITY AND RESISTANCE: GENOMIC FACTORS AMONG ORBICELLA FAVEOLATA CORALS IN SOUTH FLORIDA.
-
Creator
-
Klein, Allison M., Voss, Joshua D., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
-
Abstract/Description
-
Stony coral tissue loss disease (SCTLD) has spread throughout the entirety of Florida’s Coral Reef (FCR) and across the Caribbean, impacting over 50 coral species. The threatened hermatypic coral, Orbicella faveolata, demonstrates intraspecific variation in SCTLD resistance and has been categorized into three resistance levels: “High”, “Medium”, and “Low”. This study evaluated potential genomic underpinnings of variable disease susceptibility by monitoring and sampling 90 O. faveolata...
Show moreStony coral tissue loss disease (SCTLD) has spread throughout the entirety of Florida’s Coral Reef (FCR) and across the Caribbean, impacting over 50 coral species. The threatened hermatypic coral, Orbicella faveolata, demonstrates intraspecific variation in SCTLD resistance and has been categorized into three resistance levels: “High”, “Medium”, and “Low”. This study evaluated potential genomic underpinnings of variable disease susceptibility by monitoring and sampling 90 O. faveolata colonies from Southeast Florida and the Lower Keys. High resolution analyses of >11,000 single nucleotide polymorphisms identified no significant genetic lineages among O. faveolata colonies associated with SCTLD resistance or susceptibility. Algal symbiont community analysis revealed that Durusdinium was present in greater abundances in SCTLD-affected colonies compared to the “High” resistance group, suggesting that algal symbiont community structure may play a role in SCTLD resistance. Data generated by this research will be combined with complementary approaches to further investigate the complex drivers of SCTLD resilience.
Show less
-
Date Issued
-
2022
-
PURL
-
http://purl.flvc.org/fau/fd/FA00013996
-
Subject Headings
-
Corals--Diseases, Scleractinia, Intraspecific variation
-
Format
-
Document (PDF)
-
-
Title
-
GENETIC STRUCTURE OF SHALLOW AND MESOPHOTIC POPULATIONS OF A DOMINANT, BROADCAST SPAWNING CORAL, MONTASTRAEA CAVERNOSA, IN THE GULF OF MEXICO AND WESTERN CARIBBEAN.
-
Creator
-
Sturm, Alexis B., Voss, Joshua D., Florida Atlantic University, Department of Biological Sciences, Charles E. Schmidt College of Science
-
Abstract/Description
-
Coral reef ecosystems across the Tropical Western Atlantic, are rapidly degrading due to a combination of anthropogenic stressors including coastal development, overfishing, and climate change-induced coral bleaching and disease outbreaks. Despite this general pattern, certain reef ecosystems are less exposed to these stressors due to a lack of/or distance from coastal development and/or their depth. These characteristics protect these coral reef ecosystems from rapid degradation and these...
Show moreCoral reef ecosystems across the Tropical Western Atlantic, are rapidly degrading due to a combination of anthropogenic stressors including coastal development, overfishing, and climate change-induced coral bleaching and disease outbreaks. Despite this general pattern, certain reef ecosystems are less exposed to these stressors due to a lack of/or distance from coastal development and/or their depth. These characteristics protect these coral reef ecosystems from rapid degradation and these coral populations potentially serve as important refugia. Developing an understanding of the connectivity dynamics among these refugia and to more degraded reefs is critical to developing networks of marine protected areas and management to ensure the persistence and recovery of coral metapopulations. In particular, increased research focus has been placed on mesophotic coral ecosystems (MCEs, 30-150 m) which are deeper and more buffered from anthropogenic stressors than shallow reefs (<30 m). A collection of hypotheses known as the Deep Reef Refugia Hypothesis surmises that MCEs may serve as larval sources to reseed shallow coral populations following a disturbance-driven decline. This dissertation research focuses on quantifying the population genetic structure of a dominant, depthgeneralist, coral species, Montastraea cavernosa, across previously understudied shallow and mesophotic reefs throughout the Gulf of Mexico and Western Caribbean to quantify the refugia potential of these reefs and characterize their roles in the regional coral metapopulation. Chapter 1 provides a review of the ecology and population genetic connectivity dynamics of shallow and mesophotic coral populations in the Tropical Western Atlantic.
Show less
-
Date Issued
-
2022
-
PURL
-
http://purl.flvc.org/fau/fd/FA00014054
-
Subject Headings
-
Montastraea, Corals, Mexico, Gulf of, Caribbean Area
-
Format
-
Document (PDF)
-
-
Title
-
EVALUATING THE EFFECT OF THERMAL ANOMALIES ON CORAL REEF BENTHIC COMPETITIVE INTERACTIONS.
-
Creator
-
Spagnolia, Christopher T., Chaves-Fonnegra, Andia, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
-
Abstract/Description
-
Climate change has intensified thermal anomalies in coral reef ecosystems, contributing to coral bleaching and decline. As corals die, reef fragmentation increases, and species interactions in the benthos change. However, it is unclear which competitive interactions may prevail and structure future reef ecosystems. The aim of this thesis was to evaluate the effect of thermal anomalies on coral reef benthic competitive interactions. Photoquadrats in southeast Florida reef sites were assessed...
Show moreClimate change has intensified thermal anomalies in coral reef ecosystems, contributing to coral bleaching and decline. As corals die, reef fragmentation increases, and species interactions in the benthos change. However, it is unclear which competitive interactions may prevail and structure future reef ecosystems. The aim of this thesis was to evaluate the effect of thermal anomalies on coral reef benthic competitive interactions. Photoquadrats in southeast Florida reef sites were assessed over 15-years to generate interaction metrics and determine effects on hard coral survivorship. A state-transition model was created to predict the resultant community across 100 years with thermal scenarios concordant with the IPCC RCP 4.5 and 8.5. Interaction doubled across three thermal anomaly events and ended up mainly composed of pairwise examples between Dictyota, Halimeda, Niphates erecta, and Erythropodium caribaeorum. Century projections confirm that soft coral and sponge interactions will increase through thermal anomalies. The survival of hard corals was more successful when colonies were in permanent or intermittent interactions than when colonies were solitary (indirect interactions). Living hard corals were mostly found interacting with the macroalgae, Dictyota, and sponge Aplysina cauliformis, while corals that died were mainly in interactions with the soft coral E. caribaeorum, and sponges N. erecta, C. delitrix, D. anchorata, and Ircinia campana. Future reefs will be composed of more interactions between soft corals and sponges as thermal anomalies intensify, which will result in a patchier and flatter community.
Show less
-
Date Issued
-
2023
-
PURL
-
http://purl.flvc.org/fau/fd/FA00014257
-
Subject Headings
-
Coral reef ecology, Climate change, Benthic ecology
-
Format
-
Document (PDF)
-
-
Title
-
Biological impact caused by changes on a tropical reef.
-
Creator
-
Jones, Robert S., Randall, R. H., Wilder, M. J., Harbor Branch Oceanographic Institute
-
Date Issued
-
1976
-
PURL
-
http://purl.flvc.org/FCLA/DT/3183785
-
Subject Headings
-
Coral reef ecology--Guam, Coral reef ecology --Research, Ecology--Research, Effluent (Sewage)
-
Format
-
Document (PDF)
-
-
Title
-
The influence of nearshore waters on corals of the Florida reef tract.
-
Creator
-
Cook, Clayton B., Mueller, E. M., Ferrier, M. D., Annis, E. R.
-
Date Issued
-
2002
-
PURL
-
http://purl.flvc.org/fau/fd/FA00007396
-
Subject Headings
-
Florida, Straits of, Reefs--Florida, Corals--Florida, Montastraea, Corals--Growth
-
Format
-
Document (PDF)
-
-
Title
-
Atmospheric nitrogen deposition from a remote source enriches macroalgae in coral reef ecosystems near Green Turtle Cay, Abacos, Bahamas.
-
Creator
-
Barile, Peter J., Lapointe, Brian E.
-
Date Issued
-
2005
-
PURL
-
http://purl.flvc.org/FCLA/DT/2827829
-
Subject Headings
-
Nitrogen, Atmospheric deposition, Coral reef ecology, Coral reefs and islands, Algae
-
Format
-
Document (PDF)
-
-
Title
-
The decline of coral reefs in the Florida Keys, USA: the nexus of hypersalinity, eutrophication, political science and marine science.
-
Creator
-
Lapointe, Brian E., Matzie, William R.
-
Date Issued
-
1998
-
PURL
-
http://purl.flvc.org/FCLA/DT/3351217
-
Subject Headings
-
Coral reefs and islands--Florida, Coral declines, Salinity, Eutrophication, Political science, Marine science
-
Format
-
Document (PDF)
-
-
Title
-
Comments on “Trophic structure and productivity of a windward coral reef community on Eniwetok Atoll” [Ecological Monographs 25 (3) (1955) 291–320].
-
Creator
-
Barile, Peter J., Harbor Branch Oceanographic Institute
-
Date Issued
-
2004
-
PURL
-
http://purl.flvc.org/FCLA/DT/2848322
-
Subject Headings
-
Food chains (Ecology), Coral reef ecology, Coral reefs and islands, Coastal ecology, Benthos
-
Format
-
Document (PDF)
-
-
Title
-
Land-based nutrient enrichment of the Buccoo Reef Complex and fringing coral reefs of Tobago, West Indies.
-
Creator
-
Lapointe, Brian E., Langton, Richard, Bedford, Bradley J., Potts, Arthur C., Day, Owen, Hu, Chuanmin
-
Date Issued
-
2010-03
-
PURL
-
http://purl.flvc.org/FCLA/DT/1429256
-
Subject Headings
-
Coral reef ecology --West Indies, Coral reef ecology --Research, Eutrophication, Marine pollution
-
Format
-
Document (PDF)
Pages