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Articles 1 - 13 of 13
Full-Text Articles in Life Sciences
The Vertical And Horizontal Distribution Of Deep-Sea Crustaceans Of The Order Euphausiacea (Malacostraca: Eucarida) From The Northern Gulf Of Mexico With Notes On Reproductive Seasonality., Charles Douglas Fine
The Vertical And Horizontal Distribution Of Deep-Sea Crustaceans Of The Order Euphausiacea (Malacostraca: Eucarida) From The Northern Gulf Of Mexico With Notes On Reproductive Seasonality., Charles Douglas Fine
HCNSO Student Theses and Dissertations
The vertical and horizontal distributions of Euphausiacea in the northern Gulf of Mexico, including the location of the Deepwater Horizon oil spill, were analyzed from 340 trawl samples collected between April-June, 2011. This study is the first comprehensive survey of euphausiid distributions from depths deeper than 1000 m in the Gulf of Mexico and included stratified sampling from five discrete depth ranges (0-200 m, 200-600 m, 600-1000 m, 1000-1200 m, and 1200-1500 m). In addition, this study encompasses the region heavily impacted by the Deepwater Horizon oil spill. Data presented here could potentially be used in ecosystem models investigating trophic …
Condition Of Larval Spanish Mackerel Scomberomorus Maculatus In Relation To The Deepwater Horizon Oil Spill, John Timothy Ransom, J.E. Filbrun, Frank J. Hernandez Jr.
Condition Of Larval Spanish Mackerel Scomberomorus Maculatus In Relation To The Deepwater Horizon Oil Spill, John Timothy Ransom, J.E. Filbrun, Frank J. Hernandez Jr.
Faculty Publications
The Deepwater Horizon oil spill (DWHOS) coincided with the pelagic larval stages of many valued commercial and recreational fishes in the northern Gulf of Mexico. Larval fish survival and eventual recruitment into adult populations may have been impacted directly through toxicity or indirectly through changes in the planktonic food web caused by the release of oil and chemical dispersants during the DWHOS event. Using samples from a long-term ichthyoplankton survey off the coast of Alabama, USA, in a region impacted by the DWHOS, the abundance and condition of larval Spanish mackerel Scomberomorus maculatus were compared during summer months in years …
Experimental Assessment Of Lionfish Removals To Mitigate Reef Fish Community Shifts On Northern Gulf Of Mexico Artificial Reefs, Kristin A. Dahl, William F. Patterson Iii, Richard A. Synder
Experimental Assessment Of Lionfish Removals To Mitigate Reef Fish Community Shifts On Northern Gulf Of Mexico Artificial Reefs, Kristin A. Dahl, William F. Patterson Iii, Richard A. Synder
C-IMAGE Publications
Substantial declines in reef fishes were observed at northern Gulf of Mexico artificial reef sites between 2009−2010 and 2011−2012, a period that bracketed the appearance of invasive lionfish in this ecosystem. Small demersal reef fishes, the predominant prey of lionfish in other systems, displayed the greatest declines. However, a confounding factor during this time was the Deepwater Horizon Oil Spill (DWH) in summer 2010. In some areas, targeted lionfish removals have been demonstrated to mitigate negative effects on native fishes. Therefore, we conducted a 2 yr experiment to examine the effectiveness and ecological benefits of targeted lionfish removals at artificial …
Condition Of Larval Red Snapper (Lutjanus Campechanus) Relative To Environmental Variability And The Deepwater Horizon Oil Spill, Frank J. Hernandez Jr., J.E. Filbrun, J. Fang, John Timothy Ransom
Condition Of Larval Red Snapper (Lutjanus Campechanus) Relative To Environmental Variability And The Deepwater Horizon Oil Spill, Frank J. Hernandez Jr., J.E. Filbrun, J. Fang, John Timothy Ransom
Faculty Publications
The Deepwater Horizon oil spill(DWHOS)spatially and temporally overlapped with the spawning of many fish species, including Red Snapper, one of the most economically important reef fish in the Gulf of Mexico. To investigate potential impacts of the DWHOS on larval Red Snapper, data from a long-term ichthyoplankton survey off the coast of Alabama were used to examine: (1)larval abundances among pre-impact (2007–2009), impact(2010), and post-impact (2011, 2013) periods; (2) proxies for larval condition (size-adjusted morphometric relationships and dry weight) among the same periods; and (3) the effects of background environmental variation on larval condition. We found that larval Red Snapper …
Employing Extant Stable Carbon Isotope Data In Gulf Of Mexico Sedimentary Organic Matter For Oil Spill Studies, Brad E. Rosenheim, Matthew A. Pendergraft, George C. Flowers, Robert Carney, José L. Sericano, Jeff Chanton, Zeynep Dincer, Terry L. Wade
Employing Extant Stable Carbon Isotope Data In Gulf Of Mexico Sedimentary Organic Matter For Oil Spill Studies, Brad E. Rosenheim, Matthew A. Pendergraft, George C. Flowers, Robert Carney, José L. Sericano, Jeff Chanton, Zeynep Dincer, Terry L. Wade
Marine Science Faculty Publications
We have compiled and mapped available carbon isotope data from sedimentary organic material sampled from the Gulf of Mexico prior to 2010. These data provide a baseline to which any changes in the Gulf of Mexico after the 2010 Deepwater Horizon oil spill can be compared. The mean (±1σ) δ13C values, relative to PDB, are −21.4±1.9‰ (entire Gulf of Mexico), −21.7±1.2‰ (shelf sediments), −20.4±1.6‰ (deepwater sediments), and −25.2±4.1‰ (seep-affected sediments). We compare pre-spill mean δ13C values to carbon isotope measurements of sedimentary organic material from coretop samples collected after the 2010 Deepwater Horizon oil …
Changes In Sediment Redox Conditions Following The Bp Dwh Blowout Event, D. W. Hastings, Patrick Schwing, G. R. Brooks, R. A. Larson, J. L. Morford, T. Roeder, K. A. Quinn, T. Bartlett, Isabel C. Romero, David Hollander
Changes In Sediment Redox Conditions Following The Bp Dwh Blowout Event, D. W. Hastings, Patrick Schwing, G. R. Brooks, R. A. Larson, J. L. Morford, T. Roeder, K. A. Quinn, T. Bartlett, Isabel C. Romero, David Hollander
Marine Science Faculty Publications
Following the blowout of the Macondo well, a pulse in sedimentation resulted in changes in sedimentary redox conditions. This is demonstrated by downcore and temporal changes in the concentration of redox sensitive metals: Mn, Re, and Cd. Sediment cores collected in the NE Gulf of Mexico (GoM) reveal increased sedimentation after the Deepwater Horizon (DWH) blowout. The formation of mucous-rich marine snow in surface waters and subsequent rapid deposition to underlying sediments is the likely cause. Respiration of this material resulted in decreased pore-water oxygen concentration and a shoaled redoxcline, resulting in two distinct Mn peaks in sediments following …
Hotspots, Extinction Risk And Conservation Priorities Of Greater Caribbean And Gulf Of Mexico Marine Bony Shorefishes, Christi Linardich
Hotspots, Extinction Risk And Conservation Priorities Of Greater Caribbean And Gulf Of Mexico Marine Bony Shorefishes, Christi Linardich
Biological Sciences Theses & Dissertations
Understanding the status of species is important for allocation of resources to redress biodiversity loss. Regional organizations tasked with managing threats to the 1,360 marine bony shorefishes of the Caribbean and Gulf of Mexico would benefit from a delineation of conservation priorities. However, prior to this study, conservation status was known for only one quarter of these shorefishes. Extinction risk assessment under IUCN Red List Criteria is a widely-used, objective method to communicate species-specific conservation needs. Data were collated on each species’ distribution, population, habitats and threats and experts at three Red List workshops assigned a global level extinction risk …
Associations Of Metal Exposure In Otoliths With Lesion Formation In Offshore, Northeastern Gulf Of Mexico Fishes Collected After The Deepwater Horizon Oil Spill (2011-2013), Ernst B. Peebles
C-IMAGE data
This dataset contains annual metal concentrations for the years 2009-2011 within the otoliths of six, offshore Gulf of Mexico fishes: Red Grouper, Epinephelus morio; Red Porgy, Pagrus pagrus; Red Snapper, Lutjanus campechanus; Southern Hake, Urophycis floridana; Tilefish, Lopholatilus chamaeleonticeps; and Yellowedge Grouper, Hyporthodus flavolimbatus. Fish were collected from the northeastern Gulf of Mexico, from approximately the Louisiana Shelf to the West Florida Shelf. For each sample, a suite of 9 isotopes was measured within fish otoliths: 24Mg, 51V, 53Cr, 57Fe, 59Co, 60Ni, 63Cu, 64Zn, and 208Pb. Annual metal concentrations were determined by averaging metal concentrations corresponding to the annual increment …
Local Versus Generalized Phenotypes In Two Sympatric Aurelia Species: Understanding Jellyfish Ecology Using Genetics And Morphometrics, Luciano M. Chiaverano, Keith Bayha, William M. Graham
Local Versus Generalized Phenotypes In Two Sympatric Aurelia Species: Understanding Jellyfish Ecology Using Genetics And Morphometrics, Luciano M. Chiaverano, Keith Bayha, William M. Graham
Faculty Publications
For individuals living in environmentally heterogeneous environments, a key component for adaptation and persistence is the extent of phenotypic differentiation in response to local environmental conditions. In order to determine the extent of environmentally induced morphological variation in a natural population distributed along environmental gradients, it is necessary to account for potential genetic differences contributing to morphological differentiation. In this study, we set out to quantify geographic morphological variation in the moon jellyfish Aurelia exposed at the extremes of a latitudinal environmental gradient in the Gulf of Mexico (GoM). We used morphological data based on 28 characters, and genetic data …
Age, Growth, Reproduction, And Diet Of The Finetooth Shark, Carcharhinus Isodon, In The Northern Gulf Of Mexico, Jeremy Michael Higgs
Age, Growth, Reproduction, And Diet Of The Finetooth Shark, Carcharhinus Isodon, In The Northern Gulf Of Mexico, Jeremy Michael Higgs
Master's Theses
The current study examined life history parameters of the finetooth shark, Carcharhinus isodon, in the northern Gulf of Mexico (nGOM) to provide an accurate description of the species’ reproductive biology, age, growth and diet composition. A total of 1,489 finetooth sharks (830 female; 659 male) were collected from coastal waters of the nGOM between Apalachicola Bay, Florida (29.873° N and 84.514° W) and East Bay, Louisiana (28.959° N and 89.279° W) from June 2006 through October 2013. Peak reproductive development occurred during May/June for both males and females, which was followed by mating and an 11-12 month gestation period. …
Tidal Hydrodynamics Under Future Sea Level Rise And Coastal Morphology In The Northern Gulf Of Mexico, Davina L. Passeri, Scott C. Hagen, Nathaniel G. Plant, Matthew V. Bilskie, Stephen C. Medeiros, Karim Alizad
Tidal Hydrodynamics Under Future Sea Level Rise And Coastal Morphology In The Northern Gulf Of Mexico, Davina L. Passeri, Scott C. Hagen, Nathaniel G. Plant, Matthew V. Bilskie, Stephen C. Medeiros, Karim Alizad
Faculty Publications
This study examines the integrated influence of sea level rise (SLR) and future morphology on tidal hydrodynamics along the Northern Gulf of Mexico (NGOM) coast including seven embayments and three ecologically and economically significant estuaries. A large-domain hydrodynamic model was used to simulate astronomic tides for present and future conditions (circa 2050 and 2100). Future conditions were simulated by imposing four SLR scenarios to alter hydrodynamic boundary conditions and updating shoreline position and dune heights using a probabilistic model that is coupled to SLR. Under the highest SLR scenario, tidal amplitudes within the bays increased as much as 67% (10.0 …
Assessing The Impacts Of Oil-Associated Marine Snow Formation And Sedimentation During And After The Deepwater Horizon Oil Spill, Kendra L. Daly, Uta Passow, Jeffrey Chanton, David Hollander
Assessing The Impacts Of Oil-Associated Marine Snow Formation And Sedimentation During And After The Deepwater Horizon Oil Spill, Kendra L. Daly, Uta Passow, Jeffrey Chanton, David Hollander
Marine Science Faculty Publications
The Deepwater Horizon oil spill was the largest in US history, unprecedented for the depth and volume of oil released, the amount of dispersants applied, and the unexpected, protracted sedimentation of oil-associated marine snow (MOS) to the seafloor. Marine snow formation, incorporation of oil, and subsequent gravitational settling to the seafloor (i.e., MOSSFA: Marine Oil Snow Sedimentation and Flocculent Accumulation) was a significant pathway for the distribution and fate of oil, accounting for as much as 14% of the total oil released. Long residence times of oil on the seafloor will result in prolonged exposure by benthic organisms and economically …
Quantification Of Boat Visitation Rates At Artificial And Natural Reefs In The Eastern Gulf Of Mexico Using Acoustic Recorders, Peter Simard, Kara R. Wall, David A. Mann, Carrie C. Wall, Christopher D. Stallings
Quantification Of Boat Visitation Rates At Artificial And Natural Reefs In The Eastern Gulf Of Mexico Using Acoustic Recorders, Peter Simard, Kara R. Wall, David A. Mann, Carrie C. Wall, Christopher D. Stallings
Marine Science Faculty Publications
Artificial reefs are commonly used as a management tool, in part to provide ecosystem services, including opportunities for recreational fishing and diving. Quantifying the use of artificial reefs by recreational boaters is essential for determining their value as ecosystem services. In this study, four artificial–natural reef pairs in the eastern Gulf of Mexico (off western Florida) were investigated for boat visitation rates using autonomous acoustic recorders. Digital SpectroGram (DSG) recorders were used to collect sound files from April 2013 to March 2015. An automatic detection algorithm was used to identify boat noise in individual files using the harmonic peaks generated …