Gulf Sturgeon (Acipenser Oxyrinchus Desotoi) Pre-Restoration Occupancy Patterns On Ship Island, Mississippi Sound With An Evaluation Of Designated Critical Habitat Use By Eastern And Western Population Segments, 2016 University of Southern Mississippi
Gulf Sturgeon (Acipenser Oxyrinchus Desotoi) Pre-Restoration Occupancy Patterns On Ship Island, Mississippi Sound With An Evaluation Of Designated Critical Habitat Use By Eastern And Western Population Segments, Page Elizabeth Vick
Critical spawning and feeding habitat was designated for federally threatened, anadromous Gulf Sturgeon (GS) to aid in population recovery. This study examined GS occupancy, habitat use, and movement through critical habitat monitored by the Ship Island (SI) acoustic array during overwintering periods from 2011 to 2015 prior to MsCIP SI restoration. An occupancy index analyzed patterns of spatial and temporal habitat use of both western and eastern population segments (WPS and EPS, respectively) of GS on the SI array. The ends of SI along with the passes and cuts of the island, especially Dog Keys Pass (DKP), were occupied by ...
Examining The Combined Effects Of Dissolved Oxygen, Temperature, And Body Size On The Physiological Responses Of A Model Macrobenthic Polychaete Species, Capitella Teleta, 2016 University of Southern Mississippi
Examining The Combined Effects Of Dissolved Oxygen, Temperature, And Body Size On The Physiological Responses Of A Model Macrobenthic Polychaete Species, Capitella Teleta, Kelsey Burns Gillam
While the scientific community is in consensus that coastal systems are threatened by climate change, few climate change studies test the effects of more than one variable directly related to climate change. The dissolved oxygen (DO) levels of the ocean are currently subject to both global warming and eutrophication; 94% of all hypoxia zones are expected to experience >2°C increase by 2035. This dissertation aims to examine how a model organism responds to simultaneous thermal and DO stress involving four levels of DO (100%, 70%, 50%, and 20%) saturation and three temperatures (15°C, 20°C, and 25°C ...
Reproductive Parameters Of Coastal Pelagic Fishes, 2016 Nova Southeastern University
Reproductive Parameters Of Coastal Pelagic Fishes, Sonia Ahrabi-Nejad, David W. Kerstetter, Patricia Blackwelder, Dorothy-Ellen A. Renegar
D. Abigail Renegar
The ability to manage a fish stock relies on an understanding of life history characteristics and basic biology of the species. Numerous age-growth studies are facilitated by the relative ease of ageing fishes through hard-part analyses. Determining reproductive parameters for fish populations is just as important for stock assessments and management, and histological examination of gonads provides the most accurate determination of fecundity and spawning periods. However, research in this area is limited. Coastal pelagic fishes are often targeted commercially and recreationally due to their easy access by private vessels. The objective of this study is to provide baseline data ...
Ultrastructural And Histological Analysis Of Dark Spot Syndrome In Siderastrea Siderea And Agaricia Agaricites, 2016 Nova Southeastern University
Ultrastructural And Histological Analysis Of Dark Spot Syndrome In Siderastrea Siderea And Agaricia Agaricites, Dorothy-Ellen A. Renegar, Patricia Blackwelder, J. D. Miller, D. J. Gochfeld, Alison L. Moulding
D. Abigail Renegar
Dark Spot Syndrome (DSS) typically manifests in scleractinian corals as lesions of varying color, size, shape and location that can result in skeletal changes and tissue death. A causative agent for DSS has not yet been identified. The objective of this study was histological and ultrastructural comparison of the cellular and skeletal characteristics of DSS-affected and healthy Siderastrea siderea and Agaricia agaricites. The greater resolution possible with transmission electron microscopy (TEM) revealed microbial activity and tissue changes not resolvable utilizing histology. DSS-affected tissue had less integrity, with increasing cellular degradation and vacuolization. A high concentration of electron dense inclusions, which ...
Acute And Sub-Acute Toxicity Of The Polycyclic Aromatic Hydrocarbon 1-Methylnaphthalene To The Shallow-Water Coral Porites Divaricata: Application Of A Novel Exposure Protocol, 2016 Nova Southeastern University
Acute And Sub-Acute Toxicity Of The Polycyclic Aromatic Hydrocarbon 1-Methylnaphthalene To The Shallow-Water Coral Porites Divaricata: Application Of A Novel Exposure Protocol, Dorothy-Ellen A. Renegar, Nick Turner, Bernhard Riegl, Richard E. Dodge, Anthony H. Knap, Paul Schuler
D. Abigail Renegar
Previous research evaluating hydrocarbon toxicity to corals and coral reefs has generally focused on community level effects, and results are often not comparable between studies due to variability in hydrocarbon exposure characterization and evaluation of coral health and mortality during exposure. Toxicity of the polycyclic aromatic hydrocarbon 1-methylnaphthalene to the coral Porites divaricata was assessed in a constant exposure toxicity test utilizing a novel toxicity testing protocol uniquely applicable to shallow-water corals, which considered multiple assessment metrics and evaluated the potential for post-exposure mortality and/or recovery. Acute and sub-acute effects (gross morphological changes, photosynthetic efficiency, mortality, and histologic cellular ...
Coral Ultrastructural Response To Elevated Pco2 And Nutrients During Tissue Repair And Regeneration, 2016 Nova Southeastern University
Coral Ultrastructural Response To Elevated Pco2 And Nutrients During Tissue Repair And Regeneration, Dorothy-Ellen A. Renegar, Patricia Blackwelder, Alison L. Moulding
D. Abigail Renegar
Corals and coral reefs have recently experienced widespread decline attributed to anthropogenic pressure on reef systems. Studies have demonstrated that nutrient and pCO2 stress effect coral growth and calcification, but study of specific effects on coral tissue is lacking. The objective of this research was to examine wound healing in corals and how it is affected by exposure to elevated nutrients and pCO2. Coral tissue repair and regeneration during wound healing in Montastraea cavernosa and Porites astreoides were assessed histologically and ultrastructurally by examining colony fragments exposed to elevated nitrate, phosphate, and pCO2. In M. cavernosa, tissue repair was facilitated ...
A Novel Method Of Removing Excess Algae In The Chesapeake Bay Region Using Natural Polymers And Ferroferric Oxide, 2016 Northern Virginia Community College
A Novel Method Of Removing Excess Algae In The Chesapeake Bay Region Using Natural Polymers And Ferroferric Oxide, Rashika Budhathoki
In this article, the authors argue for an improved success rate for removing excess algae from the Chesapeake Bay via magnetic polymers.
Calibration Of Vims Research Vessel Catch Data To Ensure Continuity Of Recruitment Indices For The Chesapeake Bay Region, 2016 Virginia Institute of Marine Science
Calibration Of Vims Research Vessel Catch Data To Ensure Continuity Of Recruitment Indices For The Chesapeake Bay Region, Mary C. Fabrizio, Troy D. Tuckey
The VIMS Juvenile Fish Trawl Survey, which has been in operation since 1955, has undergone considerable changes to the sampling gear, location of sampling sites, and the methodology used to select sampling sites. Recently, a new vessel, the R/V Tidewater, replaced the R/V Fish Hawk, which had been in service for 25 years. In addition to the change in vessel, a new net was used; this net design is more robust to deployment methods and performs more consistently under varying environmental conditions. Therefore, a calibration study was conducted whereby the two research vessels with different nets fished in ...
Comparison Of Predicted And Observed Dioxin Levels In Fish: Implications For Risk Assessment, 2016 University of New Hampshire
Comparison Of Predicted And Observed Dioxin Levels In Fish: Implications For Risk Assessment, Judy S. Lakind, Daniel Q. Naiman
RISK: Health, Safety & Environment
After comparing sampled and modelled dioxin levels in the tissue of fish near pulp and paper mill discharges, the authors argue that, until an improved bioaccumulation model is incorporated into EPA's Risk assessment process, determination of human health Risks associated with consuming dioxin-contaminated fish should be based on sampling.
Newsroom: The Legal Impact Of Marine Debris 10-21-2016, 2016 Roger Williams University
Newsroom: The Legal Impact Of Marine Debris 10-21-2016, Roger Williams University School Of Law
Life of the Law School (1993- )
No abstract provided.
Mammalian Keratin Associated Proteins (Krtaps) Subgenomes: Disentangling Hair Diversity And Adaptation To Terrestrial And Aquatic Environments, Imran Khan, Emanuel Maldonado, Vitor Vasconcelos, Stephen J. O'Brien, Warren E. Johnson, Agostinho Antunes
Background: Adaptation of mammals to terrestrial life was facilitated by the unique vertebrate trait of body hair, which occurs in a range of morphological patterns. Keratin associated proteins (KRTAPs), the major structural hair shaft proteins, are largely responsible for hair variation.
Results: We exhaustively characterized the KRTAP gene family in 22 mammalian genomes, confirming the existence of 30 KRTAP subfamilies evolving at different rates with varying degrees of diversification and homogenization. Within the two major classes of KRTAPs, the high cysteine (HS) subfamily experienced strong concerted evolution, high rates of gene conversion/recombination and high GC content. In contrast, high ...
Surfactant-Associated Bacteria In The Near-Surface Layer Of The Ocean, 2016 Nova Southeastern University
Surfactant-Associated Bacteria In The Near-Surface Layer Of The Ocean, Naoko Kurata, Katie E. Vella, Bryan Hamilton, Mahmood S. Shivji, Alexander Soloviev, Silvia Matt, Aurelien Tartar, William Perrie
Certain marine bacteria found in the near-surface layer of the ocean are expected to play important roles in the production and decay of surface active materials; however, the details of these processes are still unclear. Here we provide evidence supporting connection between the presence of surfactant-associated bacteria in the near-surface layer of the ocean, slicks on the sea surface, and a distinctive feature in the synthetic aperture radar (SAR) imagery of the sea surface. From DNA analyses of the in situ samples using pyrosequencing technology, we found the highest abundance of surfactant-associated bacterial taxa in the near-surface layer below the ...
Ecological And Economic Effects Of Derelict Fishing Gear In The Chesapeake Bay 2015/2016 Final Assessment Report, 2016 Virginia Institute of Marine Science
Ecological And Economic Effects Of Derelict Fishing Gear In The Chesapeake Bay 2015/2016 Final Assessment Report, Donna Marie Bilkovic, H. Ward Slacum Jr., Kirk J. Havens, Danielle Zaveta, Christopher F.G. Jeffrey, Andrew M. Scheld, David Stanhope, Kory Angstadt, John D. Evans
Derelict fishing gear represents a major challenge to marine resource management: whether through deliberate abandonment or through accidental loss, derelict traps in particular have significant negative effects both economic (e.g., reduced fishery harvest from ghost fishing and gear competition that leads to the reduced efficiency of active gear) and ecological (e.g., degraded habitats and marine food webs and crab and bycatch mortality). Throughout the Chesapeake Bay, commercial harvest of hard-shelled blue crabs is a major fishing activity: every year sees the deployment of several hundred thousand blue crab traps (known locally as crab “pots”) across the Bay, of ...
Assessing Ecological And Economic Effects Of Derelict Fishing Gear: A Guiding Framework, 2016 CSS-Dynamac, Inc.
Assessing Ecological And Economic Effects Of Derelict Fishing Gear: A Guiding Framework, Christopher F.G. Jeffrey, Kirk J. Havens, H. Ward Slacum Jr., Donna Marie Bilkovic, Danielle Zaveta, Andrew M. Scheld, Sean Willard, John D. Evans
Developing standardized protocols to assess the ecological and socio-economic effects of marine debris – especially, derelict fishing gear – is critical for the protection of natural resources and for evaluating policies and programs designed to reduce and remove debris. This document outlines a Derelict Fishing Gear Assessment Framework to guide the development and implementation of derelict gear assessment, management and mitigation. The framework draws from techniques and protocols developed to assess derelict crab traps effects in the Chesapeake Bay and on past derelict gear assessments either conducted by or known to the framework authors. However, this framework is generalized and intended to ...
Spatial And Temporal Recruitment Patterns Of Juvenile Grunts (Haemujon Spp.) In South Florida, 2016 Nova Southeastern University
Spatial And Temporal Recruitment Patterns Of Juvenile Grunts (Haemujon Spp.) In South Florida, L. K. B. Jordan, David S. Gilliam, Robin L. Sherman, Paul T. Arena, Fleur M. Harttung, Robert M. Baron, Richard E. Spieler
Grunts (Haemulidae) are important fisheries species and represent a major component of reef fish communities in the Greater Caribbean region. To date, little is known about their recruitment pattems. Data from more than 2,000 visual fish counts from multiple natural and artificial reef studies in Broward County, Florida, over a seven-year period, were examined to identify both spatial and temporal trends in recruitment of juvenile (i.e., < 5cm TL) grunts of the genus Haemulon. In general, data from these studies indicate that juvenile Haemulon spp. recruitment increases in the spring and peaks in the early summer months (i.e., June and July). Data from natural reef surveys revealed a predominantly nearshore preference for recruitment in water depths less than 8 m. However, on artificial reefs, recruitment commoniy occurred at 20 m depths. The biotic and abiotic factors determining the settlement of grunts are not clear and will be examined in future studies.
The Structure Of Fish Assemblages On Vessel-Reefs And Adjacent Natural Reefs In Southeast Florida, 2016 Nova Southeastern University Oceanographic Center
The Structure Of Fish Assemblages On Vessel-Reefs And Adjacent Natural Reefs In Southeast Florida, Paul T. Arena
Derelict vessels are commonly deployed as artificial reefs in theUnited States, mainly for recreational fishers and divers.Broward County,Floridaalone has more than 70 vessel-reefs located in its coastal waters. Despite their popularity, few studies have rigorously examined fish assemblages on these structures and compared them to natural reefs. Resource managers need information about fish assemblages on vessel-reefs and natural reefs to better understand the dynamics of local fish populations, understanding which can then effect more informed management decisions.
The nearshore environment ofBroward County,Floridaconsists of three reef terraces, each separated by sand substrate, running parallel to the coastline in ...
Fish Colonization Of A Newly Deployed Vessel-Reef Off Southeast Florida: Preliminary Results, 2016 Nova Southeastern University
Fish Colonization Of A Newly Deployed Vessel-Reef Off Southeast Florida: Preliminary Results, Paul T. Arena, Lance K. B. Jordan, Patrick Quinn, Arlo H. Hemphill, David R. Bryan, Brian Buskirk, Richard E. Spieler
Fish colonization on the Ebenezer II, a 25.5m merchant marine vessel, was studied from May 2002 - July 2003. The ship was scuttled in May 2002 off Broward County, Florida at a depth of 21m and was censused 10 times during the study period using a modified Bohnsack and Bannerot visual census method. Adjacent natural reefs and the Mcallister, a nearby, 30m tugboat deployed in June 1998, were censused during the same period.
Distinct changes in the fish assemblage on the Ebenezer II were observed throughout the sample period. A pioneer assemblage was observed during the first three months, characterized ...
To Fish Or Not To Fish? What Effect Do California’S Marine Protected Areas Have On Up-And-Coming Kellet’S Whelk Fishery?, 2016 California Polytechnic State University - San Luis Obispo
To Fish Or Not To Fish? What Effect Do California’S Marine Protected Areas Have On Up-And-Coming Kellet’S Whelk Fishery?, Jennifer Greene
STAR (STEM Teacher and Researcher) Presentations
Kellet’s whelk, Kelletia kelletii, were observed at sample sites throughout their range from Baja California, Mexico, to Monterey, CA to determine patterns of population density. Sample sites in each region were either located within California marine protected areas where take of the Kellet’s whelk in prohibited, or in non-protected areas where the whelks can be fished both commercially and recreationally. Kellet’s whelk population density was compared between all MPA and non-MPA sample sites. These mean densities were also found for sites in Santa Barbara and San Diego near active fishing ports and compared to data from the ...
Weights And Balances: Integrating Models For Prevention And Response To Southern California Offshore Oil Spills, Carmen Watts Clayton, Amoret Bunn
STAR (STEM Teacher and Researcher) Presentations
Licensing offshore oil and gas reserves in the United States waters are overseen by the U.S. Department of the Interior’s Bureau of Safety and Enforcement (BSEE). The licensing application includes planning for any worst-case oil spill scenario between BSEE and the applicant based on lessons learned from historic offshore spills such as the Deepwater Horizon (2010), Exxon Valdez (1989), and the Union Oil Platform Blowout (1969). The process for planning to respond to oil spills involves coordination with multiple agencies, trustees, and stakeholders to ensure that oil spill responses consider multiple factors, including ecologically sensitive species, commercial transportation ...
Eelgrass/Macroalgae Discussion Primer For Tac Activities 2016-2017, 2016 University of New Hampshire
Eelgrass/Macroalgae Discussion Primer For Tac Activities 2016-2017, Piscataqua Region Estuaries Partnership
See also: "Eelgrass Distribution and Biomass in the Great Bay Estuary for 2015" http://scholars.unh.edu/prep/354
"Eelgrass Distribution in the Great Bay Estuary for 2014" http://scholars.unh.edu/prep/352/
The issue of eelgrass and macroalgae in the Great Bay Estuary (GBE) is extremely important and complex. The purpose of this document is to clarify issues and questions to make for a more productive and informed discussion.