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Full-Text Articles in Physical Sciences and Mathematics

The Role Of Bacterial Symbionts And Bioluminescence In The Pyrosome, Pyrosoma Atlanticum, Alexis Berger May 2020

The Role Of Bacterial Symbionts And Bioluminescence In The Pyrosome, Pyrosoma Atlanticum, Alexis Berger

HCNSO Student Theses and Dissertations

The pelagic tunicate, Pyrosoma atlanticum, is known for its brilliant bioluminescence, but the mechanism causing this bioluminescence has not been fully characterized. This study identifies the bacterial bioluminescent symbionts of P. atlanticum collected in the northern Gulf of Mexico using various methods such as electron microscopy, light microscopy, and molecular genetics. The bacteria are localized within a specific pyrosome light organ. Bioluminescent symbiotic bacteria of Vibrionaceae composed >50% of taxa in tunicate samples (n=13), which was shown by utilizing current molecular genetics methodologies. While searching for bacterial lux genes in 2 tunicate samples, we also serendipitously generated a draft …


The Microscopic Threat With A Macroscopic Impact: Microplastics Along The Southeast Florida Reef Tract, Emma Wightman May 2020

The Microscopic Threat With A Macroscopic Impact: Microplastics Along The Southeast Florida Reef Tract, Emma Wightman

HCNSO Student Theses and Dissertations

Microplastics have been found in large quantities in marine water samples and biota around the world. These microplastics, when present in the marine environment, decrease water quality and negatively impact marine life. This research quantified and classified marine plastic pollution along the Southeast Florida Reef Tract (SEFRT), in order to understand how this plastic is entering the ocean and the scope of the microplastic contamination in the northern SEFRT. Surface and bottom water samples were collected at 7 sites along the SEFRT for 6 months, filtered, and microscopically analyzed for microplastic content and composition using Fourier-transform infrared spectrophotometry (FTIR). Classification …


Examination Of Parasite Assemblages In Killifish Of The Genus Fundulus Across The Atlantic Coast Of The United States And Canada, Derek Garvey Apr 2020

Examination Of Parasite Assemblages In Killifish Of The Genus Fundulus Across The Atlantic Coast Of The United States And Canada, Derek Garvey

HCNSO Student Theses and Dissertations

Killifish of the genus Fundulus were examined to assess the factors shaping parasite community structure at a genus level. A database of previous parasite surveys on Fundulus species across the Atlantic coast of the United States and Canada was created from a literature review. The database included parasite and environmental factor data from 15 sources. Additional sites from New Brunswick, Maine, Massachusetts, Rhode Island, North Carolina, and South Carolina were sampled for Fundulus species. The resulting database includes data for 10 species from a total of 57 unique geographic sites. Data on the diversity and abundance of metazoan parasites were …


Fish Assemblages Associated With A Newly Deployed Eco-Engineered Artificial Seawall In The Intercoastal Waters Of Port Everglades, Olmo Cinti Apr 2020

Fish Assemblages Associated With A Newly Deployed Eco-Engineered Artificial Seawall In The Intercoastal Waters Of Port Everglades, Olmo Cinti

HCNSO Student Theses and Dissertations

As the demand for urbanization of coastal areas increases, there is a strong interest to create new infrastructures that would replace natural habitats (Airoldi & Beck, 2007; Dugan et al., 2011). These infrastructures, due to their differences in composition and structure, are often associated with decreasing biodiversity, and proliferation of invasive species (Firth et al., 2014; Moschella et al., 2005). To minimize or attenuate these negative effects of hardening shorelines eco-engineering can be implemented. This kind of approach focuses on the modification of artificial habitats to enhance services that would not be otherwise obtained (Barbier et al., 2011; Mayer-Pinto et …


Understanding The Toxicity Of Single Hydrocarbons, Oil, And Dispersed Oil: A Species Sensitivity Assessment For Five Atlantic Coral Species, Nicholas R. Turner Apr 2020

Understanding The Toxicity Of Single Hydrocarbons, Oil, And Dispersed Oil: A Species Sensitivity Assessment For Five Atlantic Coral Species, Nicholas R. Turner

HCNSO Student Theses and Dissertations

Coral reefs are keystone coastal ecosystems that are at risk of exposure to petroleum hydrocarbons from a range of sources, including oil spill incidents and chronic runoff, and are usually one of the highest valued natural resources for protection in Net Environmental Benefit Analysis (NEBA)/Spill Impact Mitigation Assessment (SIMA) of response methods and environmental damage. Previous research evaluating hydrocarbon impacts to corals has resulted in no clear characterization of sensitivity, as work has generally focused on higher-level effects, compounded by significant variability in experimental methodology. This represents an important knowledge gap in oil spill preparedness and response as it relates …


A Temporal Analysis Of The Euphausiid Assemblage In The Gulf Of Mexico After The Deepwater Horizon Oil Spill, With Notes On Seasonal Reproduction, Nathan A. La Spina Apr 2020

A Temporal Analysis Of The Euphausiid Assemblage In The Gulf Of Mexico After The Deepwater Horizon Oil Spill, With Notes On Seasonal Reproduction, Nathan A. La Spina

HCNSO Student Theses and Dissertations

This thesis presents the results of the first multi-year study on the euphausiid assemblage in the vicinity of the Deepwater Horizon oil spill (DWHOS), covering depths down to 1000 m. There are no data on the euphausiid assemblage from this region prior to the oil spill; therefore, the data in this study were analyzed with respect to year (samples collected in 2011 vs. those collected between 2015 – 2016), and season (May vs. August) to determine if any trends were present. These results presented here show a statistically significant decrease in both abundance and biomass between 2011 and 2015 – …


Atlantic Spotted Dolphin (Stenella Frontalis) And Bottlenose Dolphin (Tursiops Truncatus) Nearshore Distribution, Bimini, The Bahamas, Skylar L. Muller Apr 2020

Atlantic Spotted Dolphin (Stenella Frontalis) And Bottlenose Dolphin (Tursiops Truncatus) Nearshore Distribution, Bimini, The Bahamas, Skylar L. Muller

HCNSO Student Theses and Dissertations

Bimini, The Bahamas, includes two islands surrounded by a diverse assemblage of ecosystems and a large array of organisms, including two delphinid species, Atlantic spotted dolphins (Stenella frontalis) and common bottlenose dolphins (Tursiops truncatus, inshore ecotype). Within a predefined nearshore zone, individuals of both species had largely overlapping distribution from 2003-2018; Atlantic spotted dolphins tended to disperse farther to the north while bottlenose dolphins were located farther south. The distribution of both species varied significantly by year. Atlantic spotted dolphin sightings varied across years and months while bottlenose dolphin sightings varied by month, with differences between …


Predation Efficiency And Prey Choice Of Estuarine Organisms Under Varying Anthropogenic Light Types And Intensities, Carmen Montalvo Apr 2020

Predation Efficiency And Prey Choice Of Estuarine Organisms Under Varying Anthropogenic Light Types And Intensities, Carmen Montalvo

HCNSO Student Theses and Dissertations

The coastlines of Florida are becoming highly urbanized, and the growing human population is affecting many mangrove and estuarine habitats. Exploring the predation efficiency and prey choice of estuarine organisms under varying anthropogenic light types and intensities could help determine anthropogenic effects. Mangrove habitats support both relatively large predators such as Blue Striped Grunt (Haemulon sciurus) and Gray Snapper (Lutjanus griseus), and a diversity of smaller taxa that occupy lower trophic levels, including Grass Shrimp (Palaemonetes paludosus) and Mosquitofish (Gambusia holbrooki). Understanding how predation (or predation evasion) efficiencies are affected by different …


Sea Level Rise Vulnerability Analysis Of Mangrove Ecosystems Using Gis, Kayla Caldwell Apr 2020

Sea Level Rise Vulnerability Analysis Of Mangrove Ecosystems Using Gis, Kayla Caldwell

HCNSO Student Theses and Dissertations

Climate change is accelerating beyond what is natural due to excessive emissions from human activities. The sea level has been rising for many years and is currently at a rate of 3.6 mm/yr. Mangroves are known to only keep pace with a sea level rate of less than 1.2 mm/yr. Mangroves are particularly vulnerable to rising sea levels if they are not able to keep pace through vertical sediment accretion or inland migration. To test the vulnerability of the south Florida mangrove ecosystems to sea level rise, this study analyzed changes in the mangrove forest coverage of the Oleta River …


Comparative Study Of The Effects Of Light On Photophore Ultrastructure From Two Families Of Deep-Sea Decapod Crustaceans: Oplophoridae And Sergestidae, Jamie E. Sickles Apr 2020

Comparative Study Of The Effects Of Light On Photophore Ultrastructure From Two Families Of Deep-Sea Decapod Crustaceans: Oplophoridae And Sergestidae, Jamie E. Sickles

HCNSO Student Theses and Dissertations

Counterillumination, the mechanism by which pelagic species produce bioluminescence to replace the light blocked by their bodies to hide their silhouettes, has been known for over 100 years. However, little is known about how these animals are able to so precisely replicate the intensity of downwelling light. The recent discovery of opsins in photophores (Bracken-Grissom et al. 2020) suggests that these autogenic organs (i.e. non-bacterial) may be sensitive to light, in addition to their function of emitting visible light. The study presented here is 1) the first ultrastructural assessment of photophores in species Systellaspis debilis, Janicella spinicauda, Parasergestes armatus, …


An Investigation Into The Factors Influencing Growth And Survival Of Caribbean Acroporid Corals In A Floating Nursery, Cassie M. Vanwynen Apr 2020

An Investigation Into The Factors Influencing Growth And Survival Of Caribbean Acroporid Corals In A Floating Nursery, Cassie M. Vanwynen

HCNSO Student Theses and Dissertations

For decades, coral reef ecosystems have been in decline. To promote recovery, restoration efforts have been implemented for many degraded reefs across the globe. In the Caribbean, there is restoration focus on the coral genus Acropora. Current methods target Acropora cervicornis and A. palmata, two threatened species of branching coral that can mate to form a hybrid taxon, A. prolifera. By including the hybrid in restoration efforts, researchers may better understand how this taxon may promote nursery expansion and outplanting in restoration efforts. Establishing efforts in novel areas may further advance restoration methods by comparing location differences in nursery …


Spatial And Temporal Distribution Of Essential And Non-Essential Elements Recorded In Western Arctic Bowhead Whales (Balaena Mysticetus), Samantha L. Shore Apr 2020

Spatial And Temporal Distribution Of Essential And Non-Essential Elements Recorded In Western Arctic Bowhead Whales (Balaena Mysticetus), Samantha L. Shore

HCNSO Student Theses and Dissertations

Western Arctic bowhead whales, Balaena mysticetus, migrate annually among the Bering, Chukchi, and Beaufort seas. Foraging along their route, they use keratinous baleen to filter microscopic zooplankton from the water column. A single baleen plate from an adult bowhead whale grows continuously and stores 20+ years of dietary and environmental data. This study utilized induced coupled plasma-mass spectrometry (ICP-MS) to evaluate concentrations of 14 essential and non-essential elements in baleen samples from nine subsistence-harvested whales, yielding continuous data from 1958–1999 (n=148). Stable isotope data previously reported on these samples provided information on location (Beaufort Sea; Bering/Chukchi seas), season (winter; …


Spatial And Temporal Trends Of Southeastern Florida's Octocoral Comunity, Alexandra Hiley Dec 2019

Spatial And Temporal Trends Of Southeastern Florida's Octocoral Comunity, Alexandra Hiley

HCNSO Student Theses and Dissertations

In the Caribbean, local and global stressors have driven significant declines in scleractinian coral cover up to 80% in only three decades. Following these declines, phase shifts in benthic community composition have been reported. Shifts towards macroalgal dominance has been the most widely observed case, however, shifts towards octocoral and sponge dominance have also been reported. In Florida, USA, the Florida Reef Tract is an extensive barrier reef system that contains diverse assemblages of corals, sponges, fish, and other taxa. The Southeast Florida Reef Tract (SEFRT) within the Southeast Florida Coral Reef Conservation Area is the northern portion of this …


Sargassum Infauna Community Structure In The Florida Straits And Gulf Stream, Dayna S. Hunn Dec 2019

Sargassum Infauna Community Structure In The Florida Straits And Gulf Stream, Dayna S. Hunn

HCNSO Student Theses and Dissertations

Community structure of Sargassum-associated organisms was examined from 11 sampling locations in the Florida Straits and Gulf Stream from May—September 2018 using a combination of modified shrimp trawls and dip nets. A total of 5413 organisms were collected from Sargassumhabitat representing 14 species from 10 families. A core group of organisms (Platynereis dumerilii, Litiopa melanostoma, Portunus sayi, Portunus spinimanus, Leander tenuicornis, and Latreutes fucorum) were found throughout the entirety of the geographic range surveyed. This core community was not found to vary significantly with increasing distance to shore (P=0.217) and latitude …


Characterization Of Bacterial Communities In Biscayne Bay Through Genomic Analysis, Eric Fortman Dec 2019

Characterization Of Bacterial Communities In Biscayne Bay Through Genomic Analysis, Eric Fortman

HCNSO Student Theses and Dissertations

Biscayne Bay is a shallow oligotrophic estuary in Southeast Florida. Channelization of rivers, and dredging of canals has greatly altered the historical flow of fresh water into the bay. This, coupled with the rise of a sprawling urban & suburban development, has greatly increased the nutrient load in the bay. This study examined the bacterial community at 14 stations throughout Biscayne Bay —6 stations were located at the mouths of canals; 1 upstream-canal station; 6 stations in the center of the bay; and one ocean influenced station, located near the entrance to the bay. One liter, surface water samples were …


Inferred Function And Dynamics Of Microbial Communities From The Northern Gulf Of Mexico, Deepesh Tourani Nov 2019

Inferred Function And Dynamics Of Microbial Communities From The Northern Gulf Of Mexico, Deepesh Tourani

HCNSO Student Theses and Dissertations

Microbial communities, or microbiomes, are the major drivers of global biogeochemical cycles, acting as primary producers and decomposers across the water column in the oceans. Thus, they reflect changes in physicochemical properties and nutrient composition of the ocean. However, this correlation between ecological changes and the function of marine microbiomes is poorly understood. Large-scale oceanic events such as the bottom-water oxygen-depleted zone (i.e., “dead zone”) and the Deepwater Horizon oil spill in the Gulf of Mexico (GoM) render the ecosystem fragile. These events decrease survival rates of pelagic and coastal macrofauna and affect the biodiversity of the region. As part …


Reconstruction Of Northeastern Pacific Ocean Holocene Production Using Marine Mammal Archaeofauna, Andrea M. Traffichini Jul 2019

Reconstruction Of Northeastern Pacific Ocean Holocene Production Using Marine Mammal Archaeofauna, Andrea M. Traffichini

HCNSO Student Theses and Dissertations

Changes in marine production play a key role in determining the trophic structure of the northeastern Pacific Ocean. This is a region of great environmental fluctuations due to modern, historical, and paleo-environmental variability recorded throughout the Holocene. These fluctuations are recorded in the bone collagen of the marine mammals that reside in these waters. Marine mammal remains from four previously excavated archaeological deposits on Unalaska Island, Alaska are used as a proxy for marine production changes throughout the Holocene (4,500 BP to 350 BP). Historic and modern samples from museum collections, subsistence harvests, and previously published data provide a distinct …


Spatial And Temporal Trends In The Xestospongia Muta (Giant Barrel Sponge) Population On The Southeast Florida Reef Tract, Alanna D. Waldman Jul 2019

Spatial And Temporal Trends In The Xestospongia Muta (Giant Barrel Sponge) Population On The Southeast Florida Reef Tract, Alanna D. Waldman

HCNSO Student Theses and Dissertations

Xestospongia muta, the giant barrel sponge, is a key component of coral reef benthic communities in Southeast Florida and the Caribbean. Xestospongia muta increases habitat complexity and stability, and filters large volumes of water, enhancing water quality and facilitating nutrient cycling. Therefore, it is important to investigate trends in the X. muta population on Southeast Florida reefs in response to anthropogenic stressors, changing environmental conditions and acute disturbances and how these events affect its ecological role in the benthic community. This study identified trends in X. muta population density, volume, and size class distribution over time and across reef …


A Characterization Of A Southeast Florida Stony Coral Assemblage After A Disease Event, Nicole K. Hayes Jul 2019

A Characterization Of A Southeast Florida Stony Coral Assemblage After A Disease Event, Nicole K. Hayes

HCNSO Student Theses and Dissertations

Coral reefs have declined globally due to anthropogenic stressors increasing the frequency and severity of bleaching and disease events. In 2014, a stony coral tissue loss disease (SCTLD) outbreak occurred off the coast of southeast Florida and subsequently spread throughout the region. Data collected by the Southeast Florida Reef Evaluation and Monitoring Project (SECREMP) were used to examine the regional impacts of the disease event on the Southeast Florida stony coral assemblage. A long-term annual monitoring project, SECREMP samples permanent sites along the Southeast Florida Reef Tract (SEFRT) from Miami-Dade County north to Martin County. Analysis of stony coral demographic …


Desperate Coral Larvae? Behavioral Responses To Settlement Cues In Aging Agaricia Agaricites Larvae, Helena Sasha Fulmore Jul 2019

Desperate Coral Larvae? Behavioral Responses To Settlement Cues In Aging Agaricia Agaricites Larvae, Helena Sasha Fulmore

HCNSO Student Theses and Dissertations

The global stressors of ocean warming and acidification, as well as local stressors such as eutrophication, overfishing, and coastal construction, have all contributed to the severe decline in coral populations worldwide. Recovery of coral reefs depends partly on recruitment, which relies on the response of larvae to settlement cues indicative of habitat quality; however, it remains unclear whether recruitment in disturbed areas will be compromised. Specifically, as reefs become more disturbed and dominated by macroalgae, it is important to understand larval behavior in response to changes in habitat quality. In this study, we first assessed the settlement success of newly …


Shallow- Water Hardbottom Communities Support The Separation Of Biogeographic Provinces On The West- Central Florida Gulf Coast, Shelby Eagan Jul 2019

Shallow- Water Hardbottom Communities Support The Separation Of Biogeographic Provinces On The West- Central Florida Gulf Coast, Shelby Eagan

HCNSO Student Theses and Dissertations

Several studies have found separation of biogeographic provinces on the West Florida Shelf (WFS), but the location of this separation differs depending on different organisms with faunal boundaries proposed at Apalachicola, Cedar Key, Anclote Key. Tampa Bay, Charlotte Harbor, Cape Romano, or Cape Sable. Biogeographic boundaries can be gradual over a given space and are often species-specific. Analyses of marine benthic mapping and community characterization of Florida’s West-central coast shallow water (depth) hardbottom habitats indicate a major shift in the benthos across Tampa Bay. Quantitative benthic surveys of 29 sites yielded a total of 4,079 individuals of nine stony coral …


Timing And Potential Drivers Of Symbiont Selection In The Early Life Stages Of The Massive Starlet Coral Siderastrea Siderea, Sarah G. Koerner Jul 2019

Timing And Potential Drivers Of Symbiont Selection In The Early Life Stages Of The Massive Starlet Coral Siderastrea Siderea, Sarah G. Koerner

HCNSO Student Theses and Dissertations

The ability of corals to build reefs can be attributed to their relationship with single-celled algae of the familySymbiodiniaceae.Through the process of photosynthesis, these algae can provide their coral hosts with over 90% of their daily energy requirements. Most coral species acquire multiple species of symbionts from the surrounding water during their larval stage or immediately after settling. However, over time, the coral will select a dominant symbiont speciesthat can depend on the local environment. Until this study, the size or age of the coral at which this transition from multiple Symbiodiniaceaespecies to one dominant species occurs has remained …


Optimizing Lighting Regimes For Rearing Orbicella Faveolata And Acropora Cervicornis Recruits, Paul D. Kreh Jul 2019

Optimizing Lighting Regimes For Rearing Orbicella Faveolata And Acropora Cervicornis Recruits, Paul D. Kreh

HCNSO Student Theses and Dissertations

Coral reef decline worldwide has led to the need for coral reef restoration. The use of sexual reproduction in restoration efforts is required to increase genetic diversity; however, the procedures for rearing newly-settled coral recruits ex situ still need to be optimized. Recruits initially require low light irradiance, but it is unclear when higher irradiances are required to enhance growth and survival. Here we determined the optimal light regime for Orbicella faveolata and Acropora cervicornis recruits. Newly settled recruits were reared under treatments with varied rates of increasing irradiance (after reaching 5 weeks of age), and their survival, growth, and …


Microbial Analysis Of Surfactant-Associated Bacteria In The Sea Surface Microlayer And Remote Sensing Of Associated Slicks, Georgia Parks Jul 2019

Microbial Analysis Of Surfactant-Associated Bacteria In The Sea Surface Microlayer And Remote Sensing Of Associated Slicks, Georgia Parks

HCNSO Student Theses and Dissertations

The sea-surface microlayer (SML) is the boundary layer at the air-sea interface where many biogeochemical processes occur. Many organisms (e.g., bacteria) produce surface active agents (surfactants) for life processes, which accumulate in the SML and dampen short gravity-capillary waves, resulting in sea surface slicks. Synthetic aperture radar (SAR) is capable of remotely sensing these features on the sea surface by measuring reflected backscatter from the ocean surface in microwaves. This study coordinates SAR overpasses with in situ SML and subsurface (SSW) microbial sample collection to guide subsequent analysis after 16s rRNA sequencing on the Illumina MiSeq. In April …


Analysis Of "Observer Effect" In Logbook Reporting Accuracy For U.S. Pelagic Longline Fishing Vessels In The Atlantic And Gulf Of Mexico, Thomas J. Morrell May 2019

Analysis Of "Observer Effect" In Logbook Reporting Accuracy For U.S. Pelagic Longline Fishing Vessels In The Atlantic And Gulf Of Mexico, Thomas J. Morrell

HCNSO Student Theses and Dissertations

Commercial pelagic longline fishers within the U.S. Atlantic, Gulf of Mexico, and Caribbean are required to report all fishing interactions per each gear deployment to NOAA’s Vessel Logbook Program of the Southeast Fisheries Science Center to quantify bycatch, increase conservation efforts, and avoid jeopardizing the existence of vulnerable species listed under the Endangered Species Act (ESA). To provide additional accuracy, the Pelagic Observer Program (POP) of the SEFSC deploys professionally trained observers on longline vessels to produce a statistically reliable subset of longline fisheries data. A comparison of self-reported (“unobserved”) datasets versus observer-collected (“observed”) datasets showed a general consistency for …


Nutrient Concentrations And Effects On Mill Run From Residential, Urban, And Industrial Stormwater Contamination, Melissa Carver May 2019

Nutrient Concentrations And Effects On Mill Run From Residential, Urban, And Industrial Stormwater Contamination, Melissa Carver

HCNSO Student Theses and Dissertations

Nutrients are introduced into the waters of the Commonwealth of Pennsylvania through various methods, mainly through point and non-point sources. Non-point sources would include agricultural means however, there are often other non-point sources that are often overlooked. Water runoff from stormwater is an important contributor to pollution entering various watersheds. Data was collected at 4 locations (the initial point of reference, residential, urban, and industrial) on Mill Run and 2 locations on Woodcock Creek, through surface water collection methods in dry and wet weather. Nitrate, Nitrite, Total Phosphorus, and Total Nitrogen were among the data collected. Total Phosphorus had an …


Determining How Risk Effects Predator-Prey Interactions Of Marine Communities In The Nearshore Environment Of South Bimini, The Bahamas, Kendall Brancart Apr 2019

Determining How Risk Effects Predator-Prey Interactions Of Marine Communities In The Nearshore Environment Of South Bimini, The Bahamas, Kendall Brancart

HCNSO Student Theses and Dissertations

Predators often have strong top-down effects on ecosystems and are considered a priority for conservation and management. Predator activity can influence prey distribution, abundance, and foraging behaviors and are likely to influence habitat by impacting ecological and environmental characteristics as well as presence of competitor species. There are knowledge gaps of the functional diversity of fish assemblages, non-consumptive predator effects, and environmental effects on fish assemblages. With this study, effects of top marine predators, such as sharks and great barracuda, on diversity and abundance of prey communities were examined in putative low (north side of South Bimini = lagoon) and …


The Sedimentology Of Cay Sal Bank - An Incipiently Drowned Carbonate Platform, Luis Ramirez Apr 2019

The Sedimentology Of Cay Sal Bank - An Incipiently Drowned Carbonate Platform, Luis Ramirez

HCNSO Student Theses and Dissertations

Sediment on Cay Sal Bank (CSB) is characterized by its coarse-grain size, poor sorting, predominance of skeletal fragments, and relatively depleted d18O isotope values. CSB is an incipiently drowned platform in close proximity to the Great Bahama Bank (GBB), a carbonate platform which is not incipiently drowned and characterized by fine-grained, non-skeletal sediment. The GBB has locally well-developed oolitic grainstone facies and coral reef margins, which are both lacking on CSB. Platform-top water depths on the GBB are typically 10 m or less, but CSB depth ranges between 7 and 30 m. CSB is devoid of mud, whereas …


Effects Of Deposited Sediment And Turbidity On Survival And Growth Of Orbicella Faveolata Recruits, Morgan Stephenson Apr 2019

Effects Of Deposited Sediment And Turbidity On Survival And Growth Of Orbicella Faveolata Recruits, Morgan Stephenson

HCNSO Student Theses and Dissertations

Corals are frequently exposed to elevated turbidity and deposited sediment caused from coastal construction, dredging, and/or beach renourishment. This study addresses the effects of turbidity and deposited sediment on the survival and growth of newly settled and 6-week-old Orbicella faveolata recruits and disentangles the effects of turbidity and deposited sediment. We conducted two experiments in which newly settled coral recruits were reared in one of ten different turbidity and deposited sediment treatments for five weeks (0 NTU/ 0 mg cm-2, 3.4 NTU/ 0 mg cm-2, 8.2 NTU/ 0 mg cm-2, 16 NTU/ 0 mg …


Optimizing Restoration Site Selection Along The Florida Reef Tract For The Coral Species Acropora Cervicornis And Acropora Palmata, Samantha King Apr 2019

Optimizing Restoration Site Selection Along The Florida Reef Tract For The Coral Species Acropora Cervicornis And Acropora Palmata, Samantha King

HCNSO Student Theses and Dissertations

The decline of Acropora cervicornis and Acropora palmata populations and consequent listing as endangered species has prompted the need for restoration. Since financial resources are limited, optimal sites for restoration should not only be environmentally suitable for outplant survival, but also have a greater capacity to replenish surrounding reefs with larvae. However, in Florida coral larval dispersal patterns and reef connectivity remain poorly studied. Here, we measured long term larval survival and competency of A. cervicornis to calibrate a high resolution (100m) biophysical larval dispersal model of Acropora in the Florida Reef Tract (FRT). This model revealed that there is …