Investigating The Acute Physiological Effects Of Effluent Crystal Violet On The Freshwater Bioindicator Daphnia Pulex,
2024
University of Texas at Arlington
Investigating The Acute Physiological Effects Of Effluent Crystal Violet On The Freshwater Bioindicator Daphnia Pulex, Hoang K. Ho
2024 Fall Honors Capstone Projects - Archive
This study examines the effects of acute exposure to crystal violet (CV) on the freshwater zooplankton Daphnia pulex in response to growing concerns over synthetic dyes from industrial runoff in aquatic ecosystems. The primary objective is to assess CV's impact on D. pulex's heart rate, mobility, morphology, and lethality via a series of acute exposure tests. 48-h acute toxicity (0-2000 μg/L), 48-h immobilization (0-180 μg/L), and 9-h heart rate (0-2,000 μg/L) tests were conducted using third-generation daphnids, followed by stereomicroscopic examination and statistical analysis. Results showed increasing mortality and decreasing mobility and heart rate with increasing CV concentration; the …
Investigating Nekton Response To Changing Salinities In The Mississippi Sound: An Experimental And Statistical Approach,
2024
The University of Southern Mississippi
Investigating Nekton Response To Changing Salinities In The Mississippi Sound: An Experimental And Statistical Approach, Adam Murray
Master's Theses
The Mississippi Sound provides nursery habitats for many coastal species and is recognized for its commercial fisheries. Previous freshening events linked to the Bonnet Carré Spillway, a Mississippi River flood diversion structure, proved catastrophic for oyster populations in the Mississippi Sound, but effects on mobile fish and shellfish species are not well-defined. The planned Mid-Breton Sediment Diversion (MBSD), an initiative to combat wetland loss, is also forecasted to lower salinities in the region, increasing the need to better understand responses of commercially and ecologically important species to freshening events. The objective of this study was to characterize effects of salinity …
Global Patterns And Drivers Of Fish Reproductive Potential On Coral Reefs,
2024
Edith Cowan University
Global Patterns And Drivers Of Fish Reproductive Potential On Coral Reefs, Jeneen Hadj-Hammou, Joshua E. Cinner, Diego R. Barneche, Iain R. Caldwell, David Mouillot, James P.W. Robinson, Nina M.D. Schiettekatte, Alexandre C. Siqueira, Brett M. Taylor, Nicholas A.J. Graham
Research outputs 2022 to 2026
Fish fecundity scales hyperallometrically with body mass, meaning larger females produce disproportionately more eggs than smaller ones. We explore this relationship beyond the species-level to estimate the “reproductive potential” of 1633 coral reef sites distributed globally. We find that, at the site-level, reproductive potential scales hyperallometrically with assemblage biomass, but with a smaller median exponent than at the species-level. Across all families, modelled reproductive potential is greater in fully protected sites versus fished sites. This difference is most pronounced for the important fisheries family, Serranidae. When comparing a scenario where 30% of sites are randomly fully protected to a current …
Environmental Dna Identifies Coastal Plant Community Shift 1,000 Years Ago In Torrens Island, South Australia,
2024
Edith Cowan University
Environmental Dna Identifies Coastal Plant Community Shift 1,000 Years Ago In Torrens Island, South Australia, Nicole R. Foster, Alice R. Jones, Oscar Serrano, Anna Lafratta, Paul S. Lavery, Kor-Jent Van Dijk, Ed Biffin, Bronwyn M. Gillanders, Jennifer Young, Pere Masque, Patricia S. Gadd, Geraldine E. Jacobsen, Atun Zawadzki, Andria Greene, Michelle Waycott
Research outputs 2022 to 2026
Anthropogenic activities are causing detrimental changes to coastal plants– namely seagrass, mangrove, and tidal marshes. Looking beyond recent times to past vegetation dynamics is critical to assess the response and resilience of an environment to change. Here, we develop a high-resolution multi-proxy approach, providing a new evidence base to decipher long-term change in coastal plant communities. Combining targeted environmental DNA analysis with chemical analysis of soils, we reconstructed 4,000 years of change at a temperate wetland on Torrens Island South Australia and identified an ecosystem shift that occurred ~ 1000 years ago. What was once a subtidal seagrass system shifted …
Predation Rates On Flatback Turtle Natator Depressus Eggs And Hatchlings At An Island Rookery,
2024
Edith Cowan University
Predation Rates On Flatback Turtle Natator Depressus Eggs And Hatchlings At An Island Rookery, Casper Avenant, Sabrina Fossette, Scott Whiting, Glenn A. Hyndes
Research outputs 2022 to 2026
Predation can significantly threaten the vulnerable egg and hatchling stages of sea turtles, yet for most populations this remains poorly quantified for use in conservation. We provided the first quantified predation rates of flatback turtle eggs and hatchlings at Thevenard Island, a medium-sized rookery on the northwest coast of Australia, with a focus on ghost crabs as potential predators. Burrow densities were used as proxy for ghost crab densities, while start- and end-of-season nest inventories and infrared videography were used to quantify egg and hatchling predation, respectively. Inventories of 27 nests suggested a mean hatching success of 74.2 ± 4.6% …
Patterns Of Carbon And Nitrogen Accumulation In Seagrass (Posidonia Oceanica) Meadows Of The Eastern Mediterranean Sea,
2024
Edith Cowan University
Patterns Of Carbon And Nitrogen Accumulation In Seagrass (Posidonia Oceanica) Meadows Of The Eastern Mediterranean Sea, Eugenia T. Apostolaki, Paul S. Lavery, Victoria Litsi-Mizan, Eduard Serrano, Karina Inostroza, Vasilis Gerakaris, Thanos Dailianis, Julius Glampedakis, Tara Holitzki, Erik Johnson, Miguel A. Mateo, Oscar Serrano
Research outputs 2022 to 2026
The variability in stocks and accumulation rates of organic carbon (Corg), nitrogen (N), and carbonate (CaCO3) was studied in fifteen Posidonia oceanica meadows spread throughout the South Aegean Sea (Greece). In addition, the abiotic and biotic drivers determining the pattern of variability in the accumulation rates were assessed by exploring the influence of sediment characteristics, seagrass traits, and environmental settings. The meadows supported on average (±STDEV) 14.6 ± 5.0 kg Corg m−2, 0.47 ± 0.17 kg N m−2, and 249 ± 210 kg CaCO3 m−2 in the top meter of their sediments, with mean accumulation rates over the last 500 …
Phytoplankton Responses To Changing Irradiance And Carbon Fertilization,
2024
University of South Alabama
Phytoplankton Responses To Changing Irradiance And Carbon Fertilization, Alison Siersma
Graduate Theses and Dissertations (2019 - present)
Phytoplankton play a crucial role in marine ecosystems due to their innate ability to fix carbon. As atmospheric CO2 levels continue to rise from fossil fuel combustion, the resulting increase in dissolved CO2 and the concurrent decrease in ocean pH are likely to impact the phytoplankton community. The response of phytoplankton to elevated CO2 can vary significantly among species and environmental conditions (e.g. light, temperature, nutrient availability). To address these variations, an experiment was conducted using a controlled photobioreactor system, maintaining high and low light, constant temperature, nutrient levels, and two pCO2 concentrations. This study focused on two regionally relevant …
Socio-Ecological Drivers Of Anthropogenic Marine Debris Effects On Coral Reef Communities In The Florida Keys, Usa,
2024
Clemson University
Socio-Ecological Drivers Of Anthropogenic Marine Debris Effects On Coral Reef Communities In The Florida Keys, Usa, Tokea Payton
All Dissertations
The Florida Keys reef tract has rapidly shifted from a structurally complex, hard coral-dominated reef to a less rugose, soft coral-dominated reef. Persistent anthropogenic stressors facilitate ecological transitions by including recreational and commercial fishing and increased anthropogenic marine debris. These artificial structures are becoming habitats for small marine taxa known as cryptofauna. Cryptofauna are among the most essential yet understudied reef taxa where little is known about their fate considering degrading coral reefs and increasing anthropogenic disturbance. With increased anthropogenic stressors on the marine environment, the SCUBA diving community has initiated extensive marine debris removal efforts to assist in cleaning …
Juvenile And Subadult Gulf Sturgeon (Acipenser Desotoi) Use Of The Pascagoula River Estuary,
2024
The University of Southern Mississippi
Juvenile And Subadult Gulf Sturgeon (Acipenser Desotoi) Use Of The Pascagoula River Estuary, Sarah Stovall
Master's Theses
Gulf Sturgeon (GS) are an anadromous species currently listed as “Threatened” under the Endangered Species Act. They reside in habitats across the northern Gulf of Mexico including coastal rivers, estuaries, and marine waters, making annual migrations between freshwater and marine habitats for spawning/summer resting and feeding, respectively. Since past studies prioritize adult movement, understanding how and when juvenile and subadult GS use the Pascagoula River estuary (PRE), a complex, bifurcated river delta federally designated as critical habitat is necessary to improve conservation efforts. My thesis assessed juvenile and subadult GS use of the PRE across four years (2020-2024) by analyzing …
Red Snapper (Lutjanus Campechanus) Neurocranium,
2024
Nova Southeastern University
Red Snapper (Lutjanus Campechanus) Neurocranium, Michelle Bassali, Anthony D'Auria, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Assessment And Prioritization Of Contaminants Of Concern Along Florida's Coral Reef,
2024
Nova Southeastern University
Assessment And Prioritization Of Contaminants Of Concern Along Florida's Coral Reef, Ellen Regina E. Skelton
All HCAS Student Capstones, Theses, and Dissertations
Florida’s Coral Reef (FCR) is the third largest barrier reef in the world and faces significant stress from localized land, water, and air-based sources of pollution. Numerous chemical contaminants have been found in waters surrounding reefs and within corals, including pesticides, hydrocarbons, personal care products, pharmaceuticals, and trace metals. However, for most current and emergent environmental contaminants, little to no consistent information exists regarding environmental concentrations or toxicological effects on corals. Assessment of the levels of contaminants in coral reef environments is needed to conduct risk assessments to guide management, restoration, and recovery strategies, and the coral reef resource management …
Largemouth Bass Neurocranium,
2024
Nova Southeastern University
Largemouth Bass Neurocranium, Owen Duerbeck, Ian Thelwell, Oliva Weeks
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Black Grouper Neurocranium,
2024
Nova Southeastern University
Black Grouper Neurocranium, Angelina Trapani-Banyra, Victoria Bruno, Mason Schleicher
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Snakehead Neurocranium,
2024
Nova Southeastern University
Snakehead Neurocranium, Alexis K. Crass, Megan E. Martiello, Matthew D. Gassmann, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Place-Based Conservation In Coastal And Marine Ecosystems: The Importance Of Engagement With Underrepresented Communities,
2024
The University of Texas Rio Grande Valley
Place-Based Conservation In Coastal And Marine Ecosystems: The Importance Of Engagement With Underrepresented Communities, Viniece Jennings, Kelly M. San Antonio, Mya J. Brown, Lalah Choice, Queriah Simpson, Imani Ford, Hyun Jung Cho, Pedro Solis, Ashley Lacey, De’Marcus Robinson
School of Earth, Environmental, & Marine Sciences Faculty Publications
Through the years, research has described the importance of community-based approaches in the management of coastal and marine ecosystems. Coastal and marine issues are multifaceted and require place-specific approaches developed in partnership with vulnerable communities who are impacted by environmental stressors. Place-based conservation, a management approach that focuses on unique, place-specific characteristics, and other similar methods. It considers the need to integrate human dimensions and location-centered approaches, which are often lacking in typical natural resource management. Meaningful engagement with underrepresented communities can holistically account for socioeconomic factors and cultural knowledge that inform best management practices. As the health of marine …
Black Grouper Neurocranium,
2024
Nova Southeastern University
Black Grouper Neurocranium, Grace K. Triplett, Katelyn A. Mckimmy, Lacey Adamik, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Todaro Channeled Apple Snail (Pomacea Canaliculata),
2024
Nova Southeastern University
Todaro Channeled Apple Snail (Pomacea Canaliculata), Jasmyn Todaro, Amy C. Hirons
Hirons Field Techniques
Channeled Apple Snail (Pomacea canaliculata) shell.
Results From A Multi-Laboratory Ocean Metaproteomic Intercomparison: Effects Of Lc-Ms Acquisition And Data Analysis Procedures,
2024
Woods Hole Oceanographic Institution
Results From A Multi-Laboratory Ocean Metaproteomic Intercomparison: Effects Of Lc-Ms Acquisition And Data Analysis Procedures, Mak A. Saito, Jaclyn K. Saunders, Matthew R. Mcilvin, Erin M. Bertrand, John A. Breier, Margaret Mars Brisbin
School of Earth, Environmental, & Marine Sciences Faculty Publications
Metaproteomics is an increasingly popular methodology that provides information regarding the metabolic functions of specific microbial taxa and has potential for contributing to ocean ecology and biogeochemical studies. A blinded multi-laboratory intercomparison was conducted to assess comparability and reproducibility of taxonomic and functional results and their sensitivity to methodological variables. Euphotic zone samples from the Bermuda Atlantic Time-series Study (BATS) in the North Atlantic Ocean collected by in situ pumps and the autonomous underwater vehicle (AUV) Clio were distributed with a paired metagenome, and one-dimensional (1D) liquid chromatographic data-dependent acquisition mass spectrometry analysis was stipulated. Analysis of mass spectra from …
Red Snapper Neurocranium,
2024
Nova Southeastern University
Red Snapper Neurocranium, Roman Devlin, Michael A. Birnbaum, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
Butterfly Peacock Bass (Cichla Ocellaris) Neurocranium,
2024
Nova Southeastern University
Butterfly Peacock Bass (Cichla Ocellaris) Neurocranium, Jasmyn Todaro, Emma Horton, David Kerstetter
All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series
No abstract provided.
