Density Of Hemigrapsus Sanguineus And Carcinus Maenas In Kettle Cove, Cape Elizabeth, Maine,
2019
University of Southern Maine
Density Of Hemigrapsus Sanguineus And Carcinus Maenas In Kettle Cove, Cape Elizabeth, Maine, Valerie Huston, Teresa Martel, Zimzim Mohamed
Thinking Matters Symposium Archive
Our focus for this project is to determine how the population densities of Hemigrapsus sanguineus, Asian shore crab and Carcinus maenas, European green crabs have shifted over a brief period of time. We are comparing data collected on September 17, 2018, to data collected on October 22, 2018. The location where the two sets of data were collected from is Kettle Cove, Cape Elizabeth, Maine. The GPS coordinance was 43°.33.55N70°.13.40N. We discuss what affects the influences of environmental factors such as temperature, salinity, high intertidal versus low intertidal, and percent ascophyllum cover affect have on the population densities of these …
Quantifying Atlantic Sea Scallop (Placopecten Magellanicus) Larval Abundance Throughout Cape Elizabeth, Maine,
2019
University of Southern Maine
Quantifying Atlantic Sea Scallop (Placopecten Magellanicus) Larval Abundance Throughout Cape Elizabeth, Maine, Hannah Haskell, Britney Evangelista, Alex Loftis
Thinking Matters Symposium Archive
As markets for the Atlantic Sea scallop are growing, the need for sustainable and reliable harvesting methods such as aquaculture is more imperative than ever. Due to the difficulty of maintaining sea scallop hatcheries, scallop farmers typically collect larvae from the ocean and raise them until a marketable size on lease sites. In order to efficiently collect scallop larvae, being able to predict when the larvae are most abundant in the water column is crucial. The goal of our research was to learn when scallop larvae are most abundant in the water column and to determine if there is a …
Beach Composition Preferences For Nesting Populations Of Leatherback Sea Turtles (Dermochelys Coriacea), Armila Beach, Guna Yala Comarca,
2019
SIT Study Abroad
Beach Composition Preferences For Nesting Populations Of Leatherback Sea Turtles (Dermochelys Coriacea), Armila Beach, Guna Yala Comarca, Scott Campbell
Independent Study Project (ISP) Collection
Sea turtles play a critical role in marine ecosystems all over the world, including the Caribbean Sea. However, many sea turtle species are under threat due to anthropogenic impacts, such as habitat destruction and fisheries bycatch. This has caused significant declines in sea turtle populations around the world, which in turn has impacted marine ecosystems where sea turtles play critical roles in proper ecosystem functioning. A crucial part of the sea turtle life cycle that has been threatened by anthropogenic factors is nesting. Sea turtles rely on unspoiled beaches with particular physical characteristics for laying their eggs. One of the …
Age And Growth Of Gray Triggerfish (Balistes Capriscus) From A North-Central Gulf Of Mexico Artifical Reef Zone,
2019
Mississippi State University
Age And Growth Of Gray Triggerfish (Balistes Capriscus) From A North-Central Gulf Of Mexico Artifical Reef Zone, Amanda E. Jefferson, Robert J. Allman, Ashley E. Pacicco, James S. Franks, Frank J. Hernandez, Mark A. Albins, Sean P. Powers, Robert L. Shipp, J. Marcus Drymon
Faculty Publications
The overexploitation of many traditionally targeted reef fishes such as red snapper (Lutjanus campechanus, Poey 1860), alongside the implementation of increasingly restrictive management measures on those species, has led to increased targeting of conventionally discarded Gulf of Mexico gray triggerfish (Balistes capriscus, Gmelin 1789) commercially and recreationally. The goal of this study was to assess age and growth of gray triggerfish from the Alabama Artificial Reef Zone in the north-central Gulf of Mexico. Gray triggerfish (n = 1135) were collected predominantly from artificial habitat during 1999 – 2017. Specimens were sexed macroscopically and ages were assigned …
Sex-Specific Growth And Reproductive Dynamics Of Red Drum In The Northern Gulf Of Mexico,
2019
University of Southern Mississippi
Sex-Specific Growth And Reproductive Dynamics Of Red Drum In The Northern Gulf Of Mexico, Corbin F. Bennetts, Robert T. Leaf, Nancy J. Brown-Peterson
Faculty Publications
The Red Drum Sciaenops ocellatus stock is heavily targeted in the Gulf of Mexico (GOM) by recreational fishers and supports a small commercial fishery in Mississippi. Despite their popularity, little recent work has been done to describe their life history. In this work, we describe sex‐specific growth and reproductive dynamics of Red Drum collected from the northern GOM from September 2016 through October 2017. We evaluated seven candidate growth models and found that the three‐parameter von Bertalanffy growth function (VBGF) was the best candidate length‐at‐age model. No significant difference in growth between sexes was observed with the three‐parameter VBGF, despite …
Importance Of Weak Trophic Interactions In The Structure Of The Food Web In La Paz Bay, Southern Gulf Of California: A Topological Approach, Andrés F. Navia, Sergio R. Maciel-Zapata, Adrián F. González-Acosta, Robert T. Leaf, Victor H. Cruz-Escalona
Faculty Publications
Here, we describe the trophic structure of the La Paz Bay, Baja California Sur, Mexico, and evaluate the role of weak trophic interactions in the ecosystem using a suite of topological indices. We used information derived from published and unpublished stomach contents analysis studies from the region to construct an unweighted and directional trophic network (comprising 250 nodes and 1528 associated interactions) to assess the impact of predators in three scenarios. Each scenario simulated the removal of weak interactions corresponding to removal of those nodes with trophic contributions less than 5%, 10%, and 15%. In each removal scenario, the nodes …
Sponge Community Biocomplexity, Competition, And Functional Significance In Hard-Bottom Habitats Of The Florida Keys, Fl (Usa),
2019
Old Dominion University
Sponge Community Biocomplexity, Competition, And Functional Significance In Hard-Bottom Habitats Of The Florida Keys, Fl (Usa), Marla Maxine Valentine
Biological Sciences Theses & Dissertations
Sponges can have powerful effects on ecosystem processes in shallow, tropical marine ecosystems and are an integral component of the bentho-pelagic cycle of nutrients, via filtering of dissolved and particulate organic matter from the water column. The diversity of marine communities is thought to play a determining role in intensity of ecosystem processes; thus the loss of taxa alters community function and by extension ecosystem processes. Coastal sponge populations worldwide are increasingly exposed to declining water quality that in several regions has resulted in mass sponge mortalities and reduced sponge diversity. In the Florida Keys (Florida, USA), for example, frequent …
Upper Ocean Dynamics And Mixing In The Arabian Sea During Monsoons,
2019
University of South Carolina
Upper Ocean Dynamics And Mixing In The Arabian Sea During Monsoons, Corinne Beverly Trott
Theses and Dissertations
The Indian summer monsoon is a complex, nonlinear phenomenon involving atmospheric, oceanic, and land-based interactions from June through September. During this period, a strong low-level jet known as the Findlater Jet develops over the western Arabian Sea, advecting seasonally high quantities of warm, moist air to the Indian subcontinent, leading to the largest precipitation rates on the planet. The winds associated with the Findlater Jet seasonally strengthen the Arabian Sea eddy field, known for its intensity and variability. Comparison between the eddies in the western Arabian Sea during monsoon regimes of varying intensities revealed more high-amplitude eddies in strong (high-rainfall) …
The House Of The Fish: Collaborative Coral Reef Awareness Project On Nosy Be,
2019
SIT Study Abroad
The House Of The Fish: Collaborative Coral Reef Awareness Project On Nosy Be, Meghan Hurley
Independent Study Project (ISP) Collection
The purpose of this project was to initiate a place-based coral reef education project, with the ultimate goal of improved localized conservation efforts in the face of growing global threats. Three principal groups that interact with coral reefs on Nosy Be were interviewed: fishers, tourist guides, and conservationists. Research was conducted on the biology of coral reefs, and on the most prominent threats facing coral reefs in the Indian Ocean and around Nosy Be. Information and direct quotes from interviews, and the results of research, were incorporated into a photographic journal entitled "In the House of the Fish" or "An-tragno …
The Impacts Of Episodic Floods, Droughts, Turbidites On Organic Carbon Burial Over The Past 2,000 Years In The Santa Barbara Basin, California,
2019
University of South Carolina
The Impacts Of Episodic Floods, Droughts, Turbidites On Organic Carbon Burial Over The Past 2,000 Years In The Santa Barbara Basin, California, Caitlyn Sarno
Theses and Dissertations
Over the past several millennia, Southern California has experienced episodic climate that have influenced the magnitude and composition of terrestrial and marine material that ultimately reaches ocean sediments. Here, we analyze elemental concentrations, stable isotopes, and n-alkane lipids as tracers of terrestrial and marine sources in drought, turbidite, and flood horizons from a well-dated sediment core in the Santa Barbara Basin (SBB) that spans the last 2,000 years. Stable isotopes (δ13C and δ15N), indicate that more terrestrial organic carbon (OC) input occurred during floods relative to non-event periods, while bulk C/N ratios remained relatively constant (~10). Long chain n-alkanes, (C27, …
Dataset For: Ecotoxicological Benthic Impacts Of Experimental Oil-Contaminated Marine Snow Deposition,
2019
University of South Florida
Dataset For: Ecotoxicological Benthic Impacts Of Experimental Oil-Contaminated Marine Snow Deposition, Justine S. Van Eenennaam, Melissa Rohal, Jagos R. Radovic, Thomas B. Oldenburg, Isabel Romero, Albertinka J. Murk, Edwin M. Foekema
C-IMAGE data
This dataset contains experimental data on the effect of artificial marine snow on marine benthic invertebrates, water quality measurements, water nutrient measurements, oxygen measurements, and data on oil biodegradation (n-alkanes). Excel sheet with raw data from the experiment: exposure conditions, biota response, chemistry, and observations are included. This dataset supports the publication: van Eenennaam, J.S., Rohal, M., Montagna, P.A., Radović, J.R., Oldenburg, T.B., Romero, I.C., Murk, A.J. and Foekema, E.M. (2019). Ecotoxicological benthic impacts of experimental oil-contaminated marine snow deposition. Marine Pollution Bulletin, 141, 164-175. doi: 10.1016/j.marpolbul.2019.02.025
Factors Contributing To The Success Of Restored Oyster Reefs In The Choptank River Of The Chesapeake Bay, Virginia,
2019
Nova Southeastern University
Factors Contributing To The Success Of Restored Oyster Reefs In The Choptank River Of The Chesapeake Bay, Virginia, Tara L. Bardar
HCNSO Student Capstones
Populations of Crassostrea virginica, the Eastern oyster, have been declining since the late 1800s. While overharvesting is the primary cause of decline, the Eastern oyster is also facing the threat of disease and habitat loss. As oyster populations decline, habitat suitable for oyster spats declines as well, as these prefer to settle on the shells of other oysters that have formed reefs. Knowing this, oyster restoration projects have been focused around testing methods that will increase recruitment of spat and allow oyster reefs to form. A current and ongoing restoration project in the Choptank River of the Chesapeake Bay, …
The Coastal Ocean Circulation Influence On The 2018 West Florida Shelf K. Brevis Red Tide Bloom,
2019
University of South Florida
The Coastal Ocean Circulation Influence On The 2018 West Florida Shelf K. Brevis Red Tide Bloom, Robert H. Weisburg, Yonggang Liu, Chad Lembke, Chuanmin M. Hu, Katherine Hubbard, Mathew Garrett
Marine Science Faculty Publications
Blooms of the harmful alga, Karenia brevis on the west Florida continental shelf are thought to initiate offshore before manifesting as a nuisance along the coastline. Contributing to such blooms are a complex sequence of events occurring within oligotrophic waters, which in any given year may or may not be facilitated by the ocean circulation. Once initiation occurs, the delivery from the region of offshore origination to the region of coastline manifestation requires an upwelling circulation, whereby K. brevis cells are advected shoreward along the bottom. The 2018 K. brevis bloom was particularly intense owing to cells from the …
Phytoene Accumulation In The Novel Microalga Chlorococcum Sp. Using The Pigment Synthesis Inhibitor Fluridone,
2019
New Mexico State University
Phytoene Accumulation In The Novel Microalga Chlorococcum Sp. Using The Pigment Synthesis Inhibitor Fluridone, Kelly Laje, Mark Seger, Barry Dungan, Peter Cooke, Juergen Polle, F. Omar Holguin
Publications and Research
Carotenoids are lipophilic pigments found in plants and algae, as well as some bacteria, archaea, and fungi that serve two functions—(1) as light harvesting molecules—primary carotenoids, and (2) as antioxidants, acting against reactive oxygen species–secondary carotenoids. Because of their strong antioxidant properties, they are also valuable for the development of anti-aging and photo-protective cosmetic applications. Of particular interest is the carotenoid phytoene, for its colorless and UV absorption characteristics. In this study, we targeted a reduction of phytoene desaturase (PDS) activity with the pigment-inhibiting herbicide 1-methyl-3-phenyl-5-[3- (trifluoromethyl)phenyl]pyridin-4-one (fluridone), which leads to the over-accumulation of phytoene in the recently characterized microalgal …
Hydrocarbon Concentration Data From Sediment Cores Collected Aboard R/V Justo Sierra Cruise Js-0815 In The Southern Gulf Of Mexico From 2015-07-31 To 2015-08-08,
2019
University of South Florida
Hydrocarbon Concentration Data From Sediment Cores Collected Aboard R/V Justo Sierra Cruise Js-0815 In The Southern Gulf Of Mexico From 2015-07-31 To 2015-08-08, Isabel C. Romero
C-IMAGE data
This dataset consists of hydrocarbon measurements in sediment cores collected aboard R/V Justo Sierra cruise JS-0815 in the southern Gulf of Mexico from 2015-07-31 to 2015-08-08. The dataset contains the date, location and depth where the sediment cores were collected and the concentration of polycyclic aromatic hydrocarbon (PAHs) and biomarkers (hopanes, steranes, alkanes) analyzed at 5 mm intervals. The measurements were done following the method outlined in Romero et al., 2015 and using GC/MS/MS/MRM (gas chromatography with tandem mass spectrometry, operated in multiple reaction monitoring mode) on an Agilent 7680B gas chromatograph coupled with an Agilent 7010 triple quadrupole mass …
Comments On Edgar Et Al. (2018) Paper For South-Western Australia,
2019
Department of Primary Industries and Regional Development, Western Australia
Comments On Edgar Et Al. (2018) Paper For South-Western Australia, Daniel J. Gaughan, Nick Caputi, Brett W. Molony, Brent S. Wise, Gavin Begg, Stephen Mayfield, Michael Steer, Tim M. Ward, Adrian Linnane, Ben Stobart, Sean Sloan, Thor Saunders
Fisheries Research Articles
Edgar, Ward, and Stuart-Smith (2018) argue that Australian fishery stocks are suffering rapid declines and that to meet sustainability targets an expanded network of ‘no-fishing’ reserves is required. The three lines of evidence used were underwater visual surveys (UVSs), Australian catches, and one case study.
Macroalgal Monitoring In The Great Bay Estuary: 2018 Annual Report,
2019
University of New Hampshire, Durham
Macroalgal Monitoring In The Great Bay Estuary: 2018 Annual Report, David M. Burdick, Gregg E. Moore, Arthur C. Mathieson, Andrew Payne, Chris Peter
PREP Reports & Publications
Since 2013, the abundance and taxa of intertidal macroalgae have been assessed at fixed locations throughout the Great Bay Estuary in New Hampshire. Algal abundance may be influenced by environmental conditions such as nutrient levels, water temperature, light and invasive species. Therefore, abundance of different algal groups can provide insights into the overall health of the estuary and signal ecological change. In 2018, intertidal abundance data for percentage cover and biomass were collected, as planned, from five of the eight sites. For the first time, subtidal sampling arrays were also incorporated at all four sites in Great Bay proper to …
White Spot Syndrome Virus (Wssv) In Cultured Juvenile Blue Crabs Callinectes Sapidus: Oral Versus Injection Exposure, And Feeding Frequency Effects,
2019
University of Southern Mississippi
White Spot Syndrome Virus (Wssv) In Cultured Juvenile Blue Crabs Callinectes Sapidus: Oral Versus Injection Exposure, And Feeding Frequency Effects, Reginald B. Blaylock, Stephen S. Curran, Jeffrey M. Lotz
Faculty Publications
The efficacy of oral versus injection exposure and the effect of feeding frequency on the transmission of white spot syndrome virus (WSSV) in cultured juvenile blue crabs Callinectes sapidus were investigated. Crabs in Group 1 (G-1, n = 48) were exposed once orally to 100 mg of WSSV-infected shrimp tissue mg-1 of body weight (BW). The oral inoculum contained 2.6 × 109 WSSV genome copies mg-1 tissue. Group 2 (G-2, n = 46) received the same dosage once weekly for 5 wk. Group 3 (G-3, n = 12) was injected with 0.01 ml (2.6 × 107 …
Population Dynamics And Demographics Of Spotted Seatrout, Cynoscion Nebulosus, Through Spatial Analysis: Towards An Integrative Management Approach,
2019
Louisiana State University and Agricultural and Mechanical College
Population Dynamics And Demographics Of Spotted Seatrout, Cynoscion Nebulosus, Through Spatial Analysis: Towards An Integrative Management Approach, Ashley Melancon Baer
LSU Doctoral Dissertations
Spotted seatrout (Cynoscion nebulosus) is one of the most highly prized sportfish along the Gulf of Mexico coast, particularly in Louisiana. Although spotted seatrout are considered to be well managed and sustainably fished according to the state’s most recent stock assessment, the spatial ecology of this species is largely understudied in Louisiana waters. Acoustic telemetry is an innovative technology that is commonly used to assess the movements and behavior of aquatic species, and can be used as a tool to address the paucity of information on the spatial dynamics of spotted seatrout. The focus of this study was …
Diving Behavior And Fine-Scale Kinematics Of Free-Ranging Risso's Dolphins Foraging In Shallow And Deep-Water Habitats,
2019
Calvin University
Diving Behavior And Fine-Scale Kinematics Of Free-Ranging Risso's Dolphins Foraging In Shallow And Deep-Water Habitats, Patricia Arranz, Kelly J. Benoit-Bird
University Faculty Publications and Creative Works
No abstract provided.
