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Articles 1 - 30 of 1730

Full-Text Articles in Physical Sciences and Mathematics

Personalized Medicine: The Use Of Biomarkers And Molecularly Targeted Therapies For Patient Care And Cancer Intervention, Wafa Asad, Emily Schmitt Lavin Sep 2020

Personalized Medicine: The Use Of Biomarkers And Molecularly Targeted Therapies For Patient Care And Cancer Intervention, Wafa Asad, Emily Schmitt Lavin

Mako: NSU Undergraduate Student Journal

Personalized medicine and targeted therapy have been emerging fields of study for the remediation and inhibition of cancer. Personalized medicine in the treatment of cancer involves using genetic, immune, and proteomic profiling to provide therapeutic options as well as prognostic background for every patient and their tumor’s genetic mutations. Targeted therapies allow researchers and medical personnel alike to determine the appropriate treatment for a patient based on the molecular basis and mechanistic actions of a cancerous tumor. The overall significance of this study was to express how these treatments use biomarkers to pinpoint the location, and severity of the ...


Thermal Stress-Related Spatiotemporal Variations In High-Latitude Coral Reef Benthic Communities, Nicholas P. Jones, Joana Figueiredo, David S. Gilliam Aug 2020

Thermal Stress-Related Spatiotemporal Variations In High-Latitude Coral Reef Benthic Communities, Nicholas P. Jones, Joana Figueiredo, David S. Gilliam

Marine & Environmental Sciences Faculty Articles

High-latitude coral reef communities have been postulated as the first areas to undergo reorganisation under climate change. Tropicalisation has been identified in some high-latitude communities and is predicted in others, but it is unclear how the resident benthic taxa are affected. We conducted a long-term (2007–2016) assessment of changes to benthic community cover in relation to thermal stress duration on the Southeast Florida Reef Tract (SEFRT). Thermal stress events, both hot and cold, had acute (thermal stress duration affected benthic cover that year) and chronic (thermal stress duration affected benthic cover the following year) impacts on benthic cover. Chronic ...


Effects Of Surfactants On The Generation Of Sea Spray During Tropical Cyclones, Breanna L. Vanderplow Aug 2020

Effects Of Surfactants On The Generation Of Sea Spray During Tropical Cyclones, Breanna L. Vanderplow

All HCAS Student Capstones, Theses, and Dissertations

Despite significant improvement in computational and observational capabilities, predicting intensity and intensification of major tropical cyclones remains a challenge. In 2017 Hurricane Maria intensified to a Category 5 storm within 24 hours, devastating Puerto Rico. In 2019 Hurricane Dorian, predicted to remain tropical storm, unexpectedly intensified into a Category 5 storm and destroyed the Bahamas. The official forecast and computer models were unable to predict rapid intensification of these storms. One possible reason for this is that key physics, including microscale processes at the air-sea interface, are poorly understood and parameterized in existing forecast models.

Under tropical cyclones, the air-sea ...


Pilot Project For Future Fast And Accurate Detection Of The Human Fecal Marker Hf183 For Presence Of Human Pollution In The New River, Angie Louis Aug 2020

Pilot Project For Future Fast And Accurate Detection Of The Human Fecal Marker Hf183 For Presence Of Human Pollution In The New River, Angie Louis

All HCAS Student Capstones, Theses, and Dissertations

One type of pollution that has a negative impact on the environmental waters originates from fecal contamination. Identifying the source of pollution is an important step in effective resource management, mitigation, and reducing risk to human health. Microbial source tracking (MST) can be used to identify fecal pollution and to identify specific microbes in the environment and the quantitative polymerase chain reaction (qPCR) can be utilized in this analysis. In this pilot study the New River waterway, running through the City of Fort Lauderdale, was tested for a human specific bacteria Bacteroids, using the TaqMan HF183 qPCR assay (HF183/BFDrev ...


Prioritizing The Largest, Oldest Corals For Disease Intervention In A Coral Disease-Ravaged Area: Southeast Florida Coral Reef Ecosystem Conservation Area., Alysha Brunelle Aug 2020

Prioritizing The Largest, Oldest Corals For Disease Intervention In A Coral Disease-Ravaged Area: Southeast Florida Coral Reef Ecosystem Conservation Area., Alysha Brunelle

All HCAS Student Capstones, Theses, and Dissertations

Coral diseases appear to be more devastating than ever before. When a virulent disease ravages a coral ecosystem, it can significantly change the population’s demographics and cause local extinctions. Disease intervention response during such an event is impossible at a landscape scale, therefore priorities must be considered. Saving the largest, oldest colonies of reef-building species is a good choice due to their high fecundity and ecological function. Their size, as a proxy for age, is an indicator of their resistance to previous perturbations which may indicate higher fitness. Their size also provides habitat to many organisms and wave resistance ...


Algal Coverage Detection And Classification Using Envi: Correlation With Dissolved Oxygen Levels In Elkhorn Slough, Ca, Jason Dawson Aug 2020

Algal Coverage Detection And Classification Using Envi: Correlation With Dissolved Oxygen Levels In Elkhorn Slough, Ca, Jason Dawson

All HCAS Student Capstones, Theses, and Dissertations

Estuaries are exposed to varying stressors, whether they be physical, chemical, or environmental. The most notable of stressors is eutrophication of coastal and inland ecosystems. This is a result of increased supply of nutrients fueling production within the system. One outcome of this increased nutrient load to the system is that of algal blooms. These blooms can impact the aesthetic appearance and degrade the quality of health of the system. Many of these coastal zones and waterways are critical habitats for many biological (some endangered) species and serve as recreational areas for human populations. Elkhorn Slough, California is one of ...


Brain-Encysting Trematodes (Euhaplorchis Californiensis) Decrease Raphe Serotonergic Activity In California Killifish (Fundulus Parvipinnis), Siri H. Helland-Riise, Marco A. Vindas, Ida B. Johansen, Lauren E. Nadler, Kelly L. Weinersmith, Ryan F. Hechinger, Øyvind Øverli Jul 2020

Brain-Encysting Trematodes (Euhaplorchis Californiensis) Decrease Raphe Serotonergic Activity In California Killifish (Fundulus Parvipinnis), Siri H. Helland-Riise, Marco A. Vindas, Ida B. Johansen, Lauren E. Nadler, Kelly L. Weinersmith, Ryan F. Hechinger, Øyvind Øverli

Marine & Environmental Sciences Faculty Articles

Modulation of brain serotonin (5-HT) signalling is associated with parasite-induced changes in host behaviour, potentially increasing parasite transmission to predatory final hosts. Such alterations could have substantial impact on host physiology and behaviour, as 5-HT serves multiple roles in neuroendocrine regulation. These effects, however, remain insufficiently understood, as parasites have been associated with both increased and decreased serotonergic activity. Here, we investigated effects of trematode Euhaplorchis californiensis metacercariae on post-stress serotonergic activity in the intermediate host California killifish (Fundulus parvipinnis). This parasite is associated with conspicuous behaviour and increased predation of killifish by avian end-hosts, as well as inhibition of ...


A Classification Of Hull Operators In Archimedean Lattice-Ordered Groups With Unit, Ricardo Enrique Carrera, Anthony W. Hager Jul 2020

A Classification Of Hull Operators In Archimedean Lattice-Ordered Groups With Unit, Ricardo Enrique Carrera, Anthony W. Hager

Mathematics Faculty Articles

The category, or class of algebras, in the title is denoted by W. A hull operator (ho) in W is a reflection in the category consisting of W objects with only essential embeddings as morphisms. The proper class of all of these is hoW. The bounded monocoreflection in W is denoted B. We classify the ho’s by their interaction with B as follows. A “word” is a function w : hoWWW obtained as a finite composition of B and x a variable ranging in hoW. The set of these,“Word”, is in a natural way a partially ordered ...


Shallow-Water Coral Communities Support The Separation Of Marine Ecoregions On The West-Central Florida Gulf Coast, Brian K. Walker, Shelby Eagan, Cory Ames, Sandra Brooke, Sean Keenan, Rene Baumstark Jun 2020

Shallow-Water Coral Communities Support The Separation Of Marine Ecoregions On The West-Central Florida Gulf Coast, Brian K. Walker, Shelby Eagan, Cory Ames, Sandra Brooke, Sean Keenan, Rene Baumstark

Marine & Environmental Sciences Faculty Articles

Florida’s west coast is a 170,000 km2 bedrock shelf (west Florida shelf, WFS) comprised of north-south discontinuous carbonate outcroppings extending more than 200 km from the intertidal zone to a depth of 200 m. These outcrops support diverse benthic communities, which contribute to a multi-billion dollar recreational and commercial fishing industry, yet only about 5% of their extent has been studied in detail. Benthic communities shift over a 6.5° geographic range, but the locations of these shifts are not well-defined. Previous studies have suggested a break in biogeographic regions at Tampa Bay, south at Cape Romano ...


Effectiveness Of Topical Antibiotics In Treating Corals Affected By Stony Coral Tissue Loss Disease, Karen L. Neely, Kevin A. Macaulay, Emily K. Hower, Michelle A. Dobler Jun 2020

Effectiveness Of Topical Antibiotics In Treating Corals Affected By Stony Coral Tissue Loss Disease, Karen L. Neely, Kevin A. Macaulay, Emily K. Hower, Michelle A. Dobler

Marine & Environmental Sciences Faculty Articles

Since 2014, Stony Coral Tissue Loss Disease (SCTLD) has led to mass mortality of the majority of hard coral species on the Florida Reef Tract. Following the successful treatment of SCTLD lesions on laboratory corals using water dosed with antibiotics, two topical pastes were developed as vehicles to directly apply antibiotic treatments to wild corals. These pastes were tested as placebos and with additions of amoxicillin on active SCTLD lesions on multiple coral species. The effectiveness of the pastes without antibiotics (placebo treatments) was 4% and 9%, no different from untreated controls. Adding amoxicillin to both pastes significantly increased effectiveness ...


Uncovering The Role Of Symbiodiniaceae Assemblage Composition And Abundance In Coral Bleaching Response By Minimizing Sampling And Evolutionary Biases, Timothy D. Swain, Simon Lax, Vadim Backman, Luisa A. Marcelino May 2020

Uncovering The Role Of Symbiodiniaceae Assemblage Composition And Abundance In Coral Bleaching Response By Minimizing Sampling And Evolutionary Biases, Timothy D. Swain, Simon Lax, Vadim Backman, Luisa A. Marcelino

Marine & Environmental Sciences Faculty Articles

Background

Biodiversity and productivity of coral-reef ecosystems depend upon reef-building corals and their associations with endosymbiotic Symbiodiniaceae, which offer diverse functional capabilities to their hosts. The number of unique symbiotic partners (richness) and relative abundances (evenness) have been hypothesized to affect host response to climate change induced thermal stress. Symbiodiniaceae assemblages with many unique phylotypes may provide greater physiological flexibility or form less stable symbioses; assemblages with low abundance phylotypes may allow corals to retain thermotolerant symbionts or represent associations with less-suitable symbionts.

Results

Here we demonstrate that true richness of Symbiodiniaceae phylotype assemblages is generally not discoverable from direct ...


Phase-Adjusted Estimation Of The Covid-19 Outbreak In South Korea Under Multi-Source Data And Adjustment Measures: A Modelling Study, Xiaomei Feng, Jing Chen, Kai Wang, Lei Wang, Fengqin Zhang, Zhen Jin, Lan Zou, Xia Wang May 2020

Phase-Adjusted Estimation Of The Covid-19 Outbreak In South Korea Under Multi-Source Data And Adjustment Measures: A Modelling Study, Xiaomei Feng, Jing Chen, Kai Wang, Lei Wang, Fengqin Zhang, Zhen Jin, Lan Zou, Xia Wang

Mathematics Faculty Articles

Based on the reported data from February 16, 2020 to March 9, 2020 in South Korea including confirmed cases, death cases and recovery cases, the control reproduction number was estimated respectively at different control measure phases using Markov chain Monte Carlo method and presented using the resulting posterior mean and 95% credible interval (CrI). At the early phase from February 16 to February 24, we estimate the basic reproduction number R0 of COVID-19 to be 4.79(95% CrI 4.38 - 5.2). The estimated control reproduction number dropped rapidly to Rc ≈ 0.32 ...


Porewater Carbonate Chemistry Dynamics In A Temperate And A Subtropical Seagrass System, Theodor Kindeberg, Nicholas R. Bates, Travis A. Courtney, Tyler Cyronak, Alyssa Griffin, Fred T. Mackenzie, May-Linn Paulsen, Andreas J. Andersson May 2020

Porewater Carbonate Chemistry Dynamics In A Temperate And A Subtropical Seagrass System, Theodor Kindeberg, Nicholas R. Bates, Travis A. Courtney, Tyler Cyronak, Alyssa Griffin, Fred T. Mackenzie, May-Linn Paulsen, Andreas J. Andersson

Marine & Environmental Sciences Faculty Articles

Seagrass systems are integral components of both local and global carbon cycles and can substantially modify seawater biogeochemistry, which has ecological ramifications. However, the influence of seagrass on porewater biogeochemistry has not been fully described, and the exact role of this marine macrophyte and associated microbial communities in the modification of porewater chemistry remains equivocal. In the present study, carbonate chemistry in the water column and porewater was investigated over diel timescales in contrasting, tidally influenced seagrass systems in Southern California and Bermuda, including vegetated (Zostera marina) and unvegetated biomes (0–16 cm) in Mission Bay, San Diego, USA and ...


Behavioural Effects Of The Common Brain-Infecting Parasite Pseudoloma Neurophilia In Laboratory Zebrafish (Danio Rerio), Helene L. E. Midttun, Marco A. Vindas, Lauren E. Nadler, Øyvind Øverli, Ida B. Johansen May 2020

Behavioural Effects Of The Common Brain-Infecting Parasite Pseudoloma Neurophilia In Laboratory Zebrafish (Danio Rerio), Helene L. E. Midttun, Marco A. Vindas, Lauren E. Nadler, Øyvind Øverli, Ida B. Johansen

Marine & Environmental Sciences Faculty Articles

Research conducted on model organisms may be biased due to undetected pathogen infections. Recently, screening studies discovered high prevalence of the microsporidium Pseudoloma neurophilia in zebrafish (Danio rerio) facilities. This spore-forming unicellular parasite aggregates in brain regions associated with motor function and anxiety, and despite its high occurrence little is known about how sub-clinical infection affects behaviour. Here, we assessed how P. neurophilia infection alters the zebrafish´s response to four commonly used neurobehavioral tests, namely: mirror biting, open field, light/dark preference and social preference, used to quantify aggression, exploration, anxiety, and sociability. Although sociability and aggression remained unaltered ...


Erratum: Charles G. Messing (2020) A Revision Of The Unusual Feather Star Genus Atopocrinus With A Description Of A New Species (Echinodermata: Crinoidea). Zootaxa, 4731: 471–491., Charles G. Messing May 2020

Erratum: Charles G. Messing (2020) A Revision Of The Unusual Feather Star Genus Atopocrinus With A Description Of A New Species (Echinodermata: Crinoidea). Zootaxa, 4731: 471–491., Charles G. Messing

Marine & Environmental Sciences Faculty Articles

Erratum.


Fine-Scale Coral Connectivity Pathways In The Florida Reef Tract: Implications For Conservation And Restoration, Charles Frys, Antoine Saint-Amand, Matthieu Le Henaff, Joana Figueiredo, Alyson Kuba, Brian K. Walker, Jonathan Lambrechts, Valentin Vallaeys, David Vincent, Emmanuel Hanert May 2020

Fine-Scale Coral Connectivity Pathways In The Florida Reef Tract: Implications For Conservation And Restoration, Charles Frys, Antoine Saint-Amand, Matthieu Le Henaff, Joana Figueiredo, Alyson Kuba, Brian K. Walker, Jonathan Lambrechts, Valentin Vallaeys, David Vincent, Emmanuel Hanert

Marine & Environmental Sciences Faculty Articles

Connectivity between coral reefs is critical to ensure their resilience and persistence against disturbances. It is driven by ocean currents, which often have very complex patterns within reef systems. Only biophysical models that simulate both the fine-scale details of ocean currents and the life-history traits of larvae transported by these currents can help to estimate connectivity in large reef systems. Here we use the unstructured-mesh coastal ocean model SLIM that locally achieves a spatial resolution of ~100 m, 10 times finer than existing models, over the entire Florida Reef Tract (FRT). It allows us to simulate larval dispersal between the ...


Pattern-Avoiding (0,1)-Matrices, Richard Brualdi, Lei Cao May 2020

Pattern-Avoiding (0,1)-Matrices, Richard Brualdi, Lei Cao

Mathematics Faculty Articles

We investigate pattern-avoiding (0,1)-matrices as generalizations of pattern-avoiding permutations. Our emphasis is on 123-avoiding and 321-avoiding patterns for which we obtain exact results as to the maximum number of 1's such matrices can have. We also give algorithms when carried out in all possible ways, construct all of the pattern-avoiding matrices of these two types.


Survivorship And Growth In Staghorn Coral (Acropora Cervicornis) Outplanting Projects In The Florida Keys National Marine Sanctuary, Matt Ware, Eliza N. Garfield, Ken Nedimyer, Jessica Levy, Les Kaufman, William F. Precht, R. Scott Winters, Steven Miller May 2020

Survivorship And Growth In Staghorn Coral (Acropora Cervicornis) Outplanting Projects In The Florida Keys National Marine Sanctuary, Matt Ware, Eliza N. Garfield, Ken Nedimyer, Jessica Levy, Les Kaufman, William F. Precht, R. Scott Winters, Steven Miller

Marine & Environmental Sciences Faculty Articles

Significant population declines in Acropora cervicornis and A. palmata began in the 1970s and now exceed over 90%. The losses were caused by a combination of coral disease and bleaching, with possible contributions from other stressors, including pollution and predation. Reproduction in the wild by fragment regeneration and sexual recruitment is inadequate to offset population declines. Starting in 2007, the Coral Restoration Foundation™ evaluated the feasibility of outplanting A. cervicornis colonies to reefs in the Florida Keys to restore populations at sites where the species was previously abundant. Reported here are the results of 20 coral outplanting projects with each ...


Critical Habitats And Biodiversity: Inventory, Thresholds And Governance, Alex Rogers, Octavio Aburto-Oropeza, Ward Appeltans, Jorge Assis, Lisa T. Ballance, Philippe Cury, Carlos M. Duarte, Fabio Favoretto, Joy Kumagai, Catherine Lovelock, Patricia Miloslavich, Aidi Niamir, David Obura, Bethan C. O'Leary, Gabriel Reygondeau, Callum Roberts, Yvonne Sadovy, Tracey Sutton, Derek P. Tittensor, Enriqueta Velarde May 2020

Critical Habitats And Biodiversity: Inventory, Thresholds And Governance, Alex Rogers, Octavio Aburto-Oropeza, Ward Appeltans, Jorge Assis, Lisa T. Ballance, Philippe Cury, Carlos M. Duarte, Fabio Favoretto, Joy Kumagai, Catherine Lovelock, Patricia Miloslavich, Aidi Niamir, David Obura, Bethan C. O'Leary, Gabriel Reygondeau, Callum Roberts, Yvonne Sadovy, Tracey Sutton, Derek P. Tittensor, Enriqueta Velarde

Marine & Environmental Sciences Faculty Reports

Key Messages:

  • Evidence suggests that ocean biodiversity at all levels is being lost as a result of the direct and indirect impacts of human pressures. The main drivers of biodiversity loss are overexploitation and human pressures in coastal environments (development, habitat loss, pollution, disturbance). Increasingly, climate change and ocean acidification are and will be drivers of biodiversity loss especially in sensitive coastal ecosystems.

  • Despite advances in understanding the distribution of species and habitats in the ocean, many aspects of marine biodiversity remain poorly understood. As a result, changes in marine biodiversity are difficult to ascertain and there is a critical ...


Symbiosis And Bioinvasive Dynamics Of Durusdinium Trenchii And Its Acroporid Coral Hosts, David Craig Lawson May 2020

Symbiosis And Bioinvasive Dynamics Of Durusdinium Trenchii And Its Acroporid Coral Hosts, David Craig Lawson

HCNSO Student Capstones

Biological invasions are a growing threat to coral reef ecosystems, as increasing anthropogenic transport and changing environmental patterns allow invasive species to establish and spread. Durusdinium trenchii is a dinoflagellate that has invaded the Greater Caribbean reef system and established symbioses with coral hosts. Establishment and persistence of invasive endosymbionts like D. trenchii could indicate a shift in the clade composition of coral holobionts worldwide. Statistical analyses were performed on the GeoSymbio database (Franklin et al. 2012) to determine whether differences in clade composition have occurred over time. Factors that influence biological invasions in marine ecosystems were assessed and analogous ...


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 ...


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 ...


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 al., 2017; Strain ...


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 ...


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 – 2016, indicating ...


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 months April, June, July ...


Hiding In Plain Sight: Elopomorph Larvae Are Important Contributors To Fish Biodiversity In A Low-Latitude Oceanic Ecosystem, Jon A. Moore, Dante Fenolio, April Coan, Tracey Sutton Apr 2020

Hiding In Plain Sight: Elopomorph Larvae Are Important Contributors To Fish Biodiversity In A Low-Latitude Oceanic Ecosystem, Jon A. Moore, Dante Fenolio, April Coan, Tracey Sutton

Marine & Environmental Sciences Faculty Articles

Leptocephalus larvae of elopomorph fishes are a cryptic component of fish diversity in nearshore and oceanic habitats. However, identifying those leptocephali can be important in illuminating species richness in a region. Since the Deepwater Horizon oil spill in 2010, sampling of offshore fishes in the epi-, meso-, and upper bathypelagic depth strata of the northern Gulf of Mexico resulted in 8989 identifiable specimens of leptocephalus larvae or transforming juveniles, in 118 taxa representing 83 recognized and established species and an additional 35 distinctive leptocephalus morphotypes not yet linked to a known described species. Leptocephali account for ∼13% of the total ...


A Survey Of The Order Tetraodontiformes On Coral Reef Habitats In Southeast Florida, Anne C. Sevon Apr 2020

A Survey Of The Order Tetraodontiformes On Coral Reef Habitats In Southeast Florida, Anne C. Sevon

HCNSO Student Capstones

The economy of south Florida relies, in part, on the recreation and tourism industries; both of which are integrally linked to Florida’s coastal ecosystems. These ecosystems provide tourists the opportunity to explore mangroves and the Everglades, enjoy local beaches, and experience the ocean with fishing charters, scuba diving adventures, and snorkeling. One of the major attractions for tourists is the Florida Reef Tract (FRT), which includes multiple coral reef and hardbottom habitats that extend from St. Lucie Inlet through the Florida Keys and into the Dry Tortugas. The FRT has been a major part of research because a wide ...


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 ...


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 ...