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Articles 1 - 30 of 282
Full-Text Articles in Life Sciences
The Expanded Footprint Of The Deepwater Horizon Oil Spill In The Gulf Of Mexico Deep-Sea Benthos, Michael G. Reuscher, Jeffrey G. Baguley, Paul A. Montagna
The Expanded Footprint Of The Deepwater Horizon Oil Spill In The Gulf Of Mexico Deep-Sea Benthos, Michael G. Reuscher, Jeffrey G. Baguley, Paul A. Montagna
C-IMAGE Publications
The 2010 Deepwater Horizon blowout off the coast of Louisiana caused the largest marine oil spill on record. Samples were collected 2–3 months after the Macondo well was capped to assess damage to macrofauna and meiofauna communities. An earlier analysis of 58 stations demonstrated severe and moderate damage to an area of 148 km2. An additional 58 archived stations have been analyzed to enhance the resolution of that assessment and determine if impacts occurred further afield. Impacts included high levels of total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAH) in the sediment, low diversity, low evenness, and …
Influence Of Oil, Dispersant, And Pressure On Microbial Communities From The Gulf Of Mexico, Nuttapol Noirungsee, Steffen Hackbusch, Juan Viamonte, Paul Bubenheim, Andreas Liese, Rudolf Müller
Influence Of Oil, Dispersant, And Pressure On Microbial Communities From The Gulf Of Mexico, Nuttapol Noirungsee, Steffen Hackbusch, Juan Viamonte, Paul Bubenheim, Andreas Liese, Rudolf Müller
C-IMAGE Publications
The Deepwater Horizon incident in the Gulf of Mexico in 2010 released an unprecedented amount of petroleum hydrocarbons 1500 meters below the sea surface. Few studies have considered the influence of hydrostatic pressure on bacterial community development and activity during such spills. The goal of this study was to investigate the response of indigenous sediment microbial communities to the combination of increased pressure, hydrocarbons and dispersant. Deep-sea sediment samples collected from the northern Gulf of Mexico were incubated at atmospheric pressure (0.1 MPa) and at elevated pressure (10 MPa), with and without the addition of crude oil and dispersant. After …
A First Comprehensive Baseline Of Hydrocarbon Pollution In Gulf Of Mexico Fishes, Erin Pulster, Adolfo Gracia, Maickel Armenteros, Gerardo Toro-Farmer, Susan M. Snyder, Brigid Carr, Madison Schwaab, Tiffany Nicholson, Justin Mrowicki, Steven Murawski
A First Comprehensive Baseline Of Hydrocarbon Pollution In Gulf Of Mexico Fishes, Erin Pulster, Adolfo Gracia, Maickel Armenteros, Gerardo Toro-Farmer, Susan M. Snyder, Brigid Carr, Madison Schwaab, Tiffany Nicholson, Justin Mrowicki, Steven Murawski
C-IMAGE Publications
Despite over seven decades of production and hundreds of oil spills per year, there were no comprehensive baselines for petroleum contamination in the Gulf of Mexico (GoM) prior to this study. Subsequent to the 2010 Deepwater Horizon (DWH) spill, we implemented Gulf-wide fish surveys extending over seven years (2011–2018). A total of 2,503 fishes, comprised of 91 species, were sampled from 359 locations and evaluated for biliary polycyclic aromatic hydrocarbon (PAH) concentrations. The northern GoM had significantly higher total biliary PAH concentrations than the West Florida Shelf, and coastal regions off Mexico and Cuba. The highest concentrations of biliary PAH …
The Southern Gulf Of Mexico: A Baseline Radiocarbon Isoscape Of Surface Sediments And Isotopic Excursions At Depth, Samantha H Bosman, Patrick Schwing, Rebekka A. Larson, Natalie E. Wildermann, Gregg R. Brooks, Isabel Romero, Joan-Albert Sanchez-Cabeza, Ana Carolina Ruiz-Fernández, Maria Luisa Machain-Castillo, Adolfo Gracia, Elva Escobar-Briones, Steven Murawski, David Hollander, Jeffrey P. Chanton
The Southern Gulf Of Mexico: A Baseline Radiocarbon Isoscape Of Surface Sediments And Isotopic Excursions At Depth, Samantha H Bosman, Patrick Schwing, Rebekka A. Larson, Natalie E. Wildermann, Gregg R. Brooks, Isabel Romero, Joan-Albert Sanchez-Cabeza, Ana Carolina Ruiz-Fernández, Maria Luisa Machain-Castillo, Adolfo Gracia, Elva Escobar-Briones, Steven Murawski, David Hollander, Jeffrey P. Chanton
C-IMAGE Publications
The southern Gulf of Mexico (sGoM) is home to an extensive oil recovery and development infrastructure. In addition, the basin harbors sites of submarine hydrocarbon seepage and receives terrestrial inputs from bordering rivers. We used stable carbon, nitrogen, and radiocarbon analyses of bulk sediment organic matter to define the current baseline isoscapes of surface sediments in the sGoM and determined which factors might influence them. These baseline surface isoscapes will be useful for accessing future environmental impacts. We also examined the region for influence of hydrocarbon deposition in the sedimentary record that might be associated with hydrocarbon recovery, spillage and …
Changes In Reef Fish Community Structure Following The Deepwater Horizon Oil Spill, Justin P. Lewis, Joseph H. Tarnecki, Steven B. Garner, David D. Chagaris, William F. Patterson Iii
Changes In Reef Fish Community Structure Following The Deepwater Horizon Oil Spill, Justin P. Lewis, Joseph H. Tarnecki, Steven B. Garner, David D. Chagaris, William F. Patterson Iii
C-IMAGE Publications
Large-scale anthropogenic disturbances can have direct and indirect effects on marine communities, with direct effects often taking the form of widespread injury or mortality and indirect effects manifesting as changes in food web structure. Here, we report a time series that captures both direct and indirect effects of the Deepwater Horizon Oil Spill (DWH) on northern Gulf of Mexico (nGoM) reef fish communities. We observed significant changes in community structure immediately following the DWH, with a 38% decline in species richness and 26% decline in Shannon-Weiner diversity. Initial shifts were driven by widespread declines across a range of trophic guilds, …
Deepwater Horizon And The Rise Of The Omics, Joel E. Kostka, Samantha Joye, Rita Collwell
Deepwater Horizon And The Rise Of The Omics, Joel E. Kostka, Samantha Joye, Rita Collwell
C-IMAGE Publications
Microbial genomics techniques came of age following the Deepwater Horizon spill, offering researchers unparalleled insights into how ecosystems respond to such environmental disasters.
Spatial Contrasts In Hepatic And Biliary Pahs In Tilefish (Lopholatilus Chamaeleonticeps) Throughout The Gulf Of Mexico, With Comparison To The Northwest Atlantic, Susan M. Snyder, Jill A. Olin, Erin Pulster, Steven Murawski
Spatial Contrasts In Hepatic And Biliary Pahs In Tilefish (Lopholatilus Chamaeleonticeps) Throughout The Gulf Of Mexico, With Comparison To The Northwest Atlantic, Susan M. Snyder, Jill A. Olin, Erin Pulster, Steven Murawski
C-IMAGE Publications
A multinational demersal longline survey was conducted on the Gulf of Mexico continental shelf over the years 2015 and 2016 to generate a Gulf-wide baseline of polycyclic aromatic hydrocarbon (PAH) concentrations in demersal fishes. Tilefish (Lopholatilus chamaeleonticeps) were sampled in all regions of the Gulf of Mexico for biometrics, bile, and liver. Tilefish liver was also obtained from surveys in the northwest Atlantic Ocean for comparison. Liver tissues (n = 305) were analyzed for PAHs and select alkylated homologs using QuEChERS extractions and gas chromatography tandem mass spectrometry. Bile samples (n = 225) were analyzed for …
Chronic Pah Exposures And Associated Declines In Fish Health Indices Observed For Ten Grouper Species In The Gulf Of Mexico, Erin Pulster, Adolfo Gracia, Maickel Armenteros, Brigid Carr, Justin Mrowicki, Steven Murawski
Chronic Pah Exposures And Associated Declines In Fish Health Indices Observed For Ten Grouper Species In The Gulf Of Mexico, Erin Pulster, Adolfo Gracia, Maickel Armenteros, Brigid Carr, Justin Mrowicki, Steven Murawski
C-IMAGE Publications
Ten grouper species grouper (n = 584) were collected throughout the Gulf of Mexico (GoM) from 2011 through 2017 to provide information on hepatobiliary polycyclic aromatic hydrocarbon (PAH) concentrations in the aftermath of the Deepwater Horizon (DWH) oil spill. Liver and bile samples were analyzed for PAHs and their metabolites using triple quadrupole mass spectrometry (GC/MS/MS) and high-performance liquid chromatography with fluorescence detection (HPLC-F), respectively. Data were compared among species and sub-regions of the GoM to understand spatiotemporal exposure dynamics in these economically and ecologically important species. Significant differences in the composition and concentrations of PAHs were detected spatially, …
Detedit: A Graphical User Interface For Annotating And Editing Events Detected In Long-Term Acoustic Monitoring Data, Alba Solsona-Berga, Kaitlin E. Frasier, Simone Baumann-Pickering, Sean M. Wiggins, John A. Hildebrand
Detedit: A Graphical User Interface For Annotating And Editing Events Detected In Long-Term Acoustic Monitoring Data, Alba Solsona-Berga, Kaitlin E. Frasier, Simone Baumann-Pickering, Sean M. Wiggins, John A. Hildebrand
C-IMAGE Publications
Passive acoustic monitoring has become an important data collection method, yielding massive datasets replete with biological, environmental and anthropogenic information. Automated signal detectors and classifiers are needed to identify events within these datasets, such as the presence of species-specific sounds or anthropogenic noise. These automated methods, however, are rarely a complete substitute for expert analyst review. The ability to visualize and annotate acoustic events efficiently can enhance scientific insights from large, previously intractable datasets. A MATLAB-based graphical user interface, called DetEdit, was developed to accelerate the editing and annotating of automated detections from extensive acoustic datasets. This tool is highly-configurable …
Life History Of Northern Gulf Of Mexico Warsaw Grouper Hyporthodus Nigritus Inferred From Otolith Radiocarbon Analysis, Beverly K. Barnett, Jeffrey P. Chanton, Robert Ahrens, Laura Thornton, William F. Patterson Iii
Life History Of Northern Gulf Of Mexico Warsaw Grouper Hyporthodus Nigritus Inferred From Otolith Radiocarbon Analysis, Beverly K. Barnett, Jeffrey P. Chanton, Robert Ahrens, Laura Thornton, William F. Patterson Iii
C-IMAGE Publications
Warsaw grouper, Hyporthodus nigritus, is a western Atlantic Ocean species typically found at depths between 55 and 525 m. It is listed as a species of concern by the U.S. National Marine Fisheries Service and as near threatened by the International Union for the Conservation of Nature. However, little information exists on the species’ life history in the northern Gulf of Mexico (nGOM) and its stock status in that region is currently unknown. Age of nGOM Warsaw grouper was investigated via opaque zone counts in otolith thin sections (max age = 61 y), and then the bomb 14C chronometer …
The First Global Deep-Sea Stable Isotope Assessment Reveals The Unique Trophic Ecology Of Vampire Squid Vampyroteuthis Infernalis (Cephalopoda), A. V. Golikov, F. R. Ceia, R. M. Sabirov, J. D. Ablett, Ian G. Gleadall, Gudmundur Gudmundsson, Henk-Jan T. Hoving, Heather L. Judkins
The First Global Deep-Sea Stable Isotope Assessment Reveals The Unique Trophic Ecology Of Vampire Squid Vampyroteuthis Infernalis (Cephalopoda), A. V. Golikov, F. R. Ceia, R. M. Sabirov, J. D. Ablett, Ian G. Gleadall, Gudmundur Gudmundsson, Henk-Jan T. Hoving, Heather L. Judkins
USF St. Petersburg campus Faculty Publications
Vampyroteuthis infernalis Chun, 1903, is a widely distributed deepwater cephalopod with unique morphology and phylogenetic position. We assessed its habitat and trophic ecology on a global scale via stable isotope analyses of a unique collection of beaks from 104 specimens from the Atlantic, Pacific and Indian Oceans. Cephalopods typically are active predators occupying a high trophic level (TL) and exhibit an ontogenetic increase in δ15N and TL. Our results, presenting the first global comparison for a deep-sea invertebrate, demonstrate that V. infernalis has an ontogenetic decrease in δ15N and TL, coupled with niche broadening. Juveniles are mobile zooplanktivores, while larger …
Temporal Variability Of Polycyclic Aromatic Hydrocarbons In Deep-Sea Cephalopods Of The Northern Gulf Of Mexico, Isabel C. Romero, Heather L. Judkins, Michael Vecchione
Temporal Variability Of Polycyclic Aromatic Hydrocarbons In Deep-Sea Cephalopods Of The Northern Gulf Of Mexico, Isabel C. Romero, Heather L. Judkins, Michael Vecchione
USF St. Petersburg campus Faculty Publications
As part of the effort to understand the effects of the Deepwater Horizon Oil Spill (DWHOS), we analyzed tissue from five species of midwater oceanic cephalopods in the northern Gulf of Mexico (GoM) during three time periods, including one period sampled fortuitously just before the spill (2010), and two periods sampled after the spill (2011 and 2015–2016). The species, Japetella diaphana, Abralia redfieldi, Histioteuthis corona, Leachia atlantica, and Onychoteuthis banksii were collected in three geographic areas in the GoM (east, south and southeast of the Macondo wellhead). Results indicate a shift in the composition of polycyclic aromatic hydrocarbons (PAHs) in …
Succession Of Microbial Populations And Nitrogen-Fixation Associated With The Biodegradation Of Sediment-Oil-Agglomerates Buried In A Florida Sandy Beach, Boryoung Shin, Ioana Bociu, Max Kolton, Markus Huettel, Joel E Kostka
Succession Of Microbial Populations And Nitrogen-Fixation Associated With The Biodegradation Of Sediment-Oil-Agglomerates Buried In A Florida Sandy Beach, Boryoung Shin, Ioana Bociu, Max Kolton, Markus Huettel, Joel E Kostka
C-IMAGE Publications
The Deepwater Horizon (DWH) oil spill contaminated coastlines from Louisiana to Florida, burying oil up to 70 cm depth in sandy beaches, posing a potential threat to environmental and human health. The dry and nutrient-poor beach sand presents a taxing environment for microbial growth, raising the question how the biodegradation of the buried oil would proceed. Here we report the results of an in-situ experiment that (i) characterized the dominant microbial communities contained in sediment oil agglomerates (SOAs) of DWH oil buried in a North Florida sandy beach, (ii) elucidated the long-term succession of the microbial populations that developed in …
Hepatobiliary Analyses Suggest Chronic Pah Exposure In Hakes (Urophycis Spp.) Following The Deepwater Horizon Oil Spill, Rachel E. Struch, Erin Pulster, Andrea D. Schreier, Steven A. Murawski
Hepatobiliary Analyses Suggest Chronic Pah Exposure In Hakes (Urophycis Spp.) Following The Deepwater Horizon Oil Spill, Rachel E. Struch, Erin Pulster, Andrea D. Schreier, Steven A. Murawski
C-IMAGE Publications
Prior to the Deepwater Horizon oil spill, we lacked a comprehensive baseline of oil contamination in the Gulf of Mexico's sediments, water column, and biota. Gaps in prespill knowledge limit our ability to determine the aftereffects of the Deepwater Horizon blowout or prepare to mitigate similar impacts during future oil spill disasters. We examined spatiotemporal differences in exposure to and metabolism of polycyclic aromatic hydrocarbons (PAHs) in 2 hake species (Urophycis spp.) to establish a current baseline for these ecologically important, abundant, and at-risk demersal fishes. Gulf hake (Urophycis cirrata) and southern hake (Urophycis floridana) were collected throughout the Gulf …
Improving The Integration Of Restoration And Conservation In Marine And Coastal Ecosystems: Lessons From The Deepwater Horizon Disaster, Richard L. Wallace, Gilbert Gilbert, John E. Reynolds Iii
Improving The Integration Of Restoration And Conservation In Marine And Coastal Ecosystems: Lessons From The Deepwater Horizon Disaster, Richard L. Wallace, Gilbert Gilbert, John E. Reynolds Iii
C-IMAGE Publications
In the wake of the Deepwater Horizon disaster, much has been learned about the biological, ecological, physical, and chemical conditions of the Gulf of Mexico. In parallel, the research community has also gained insight about the social and organizational structures and processes necessary for oil spill response and subsequent marine and coastal restoration. However, even with these lessons from both the Deepwater Horizon and previous spills, including 1989’s Exxon Valdez and the Ixtoc 1 in 1979, our understanding of how to avoid future crises has not advanced at the same pace as offshore oil and gas development. We argue that …
Resolving The Dilemma Of Dispersant Use For Deep Oil Spill Response, Steven Murawski, Michael Schlüter, Claire B. Paris-Limouzy, Zachary M. Aman
Resolving The Dilemma Of Dispersant Use For Deep Oil Spill Response, Steven Murawski, Michael Schlüter, Claire B. Paris-Limouzy, Zachary M. Aman
C-IMAGE Publications
No abstract provided.
Hepatobiliary Analyses Suggest Chronic Pah Exposurein Hakes (Urophycis Spp.) Following The Deepwater Horizon Oil Spill, Rachel Struch, Erin Pulster, Andrea D. Schreier, Steven Murawski
Hepatobiliary Analyses Suggest Chronic Pah Exposurein Hakes (Urophycis Spp.) Following The Deepwater Horizon Oil Spill, Rachel Struch, Erin Pulster, Andrea D. Schreier, Steven Murawski
C-IMAGE Publications
Prior to theDeepwater Horizon oil spill, we lacked a comprehensive baseline of oil contamination in the Gulf of Mexico’s sediments, water column, and biota. Gaps in prespill knowledge limit our ability to determine the aftereffects of the Deepwater Horizon blowout or prepare to mitigate similar impacts during future oil spill disasters. We examined spatio temporal differences in exposure to and metabolism of polycyclic aromatic hydrocarbons (PAHs) in 2 hake species (Urophycis spp.)to establish a current baseline for these ecologically important, abundant, and at‐risk demersal fishes. Gulf hake (Urophycis cirrata) and southern hake (Urophycis floridana) were …
Potential Influence Of The Deepwater Horizon Oil Spill On Phytoplankton Primary Productivity In The Northern Gulf Of Mexico, Yao Li, Chuanmin Hu, Antonietta Quigg, Huilin Gao
Potential Influence Of The Deepwater Horizon Oil Spill On Phytoplankton Primary Productivity In The Northern Gulf Of Mexico, Yao Li, Chuanmin Hu, Antonietta Quigg, Huilin Gao
C-IMAGE Publications
Nine years after the Deepwater Horizon (DwH) oil spill (20 April–15 July 2010), the recovery of primary productivity at the ocean surface remains to be investigated. Here, we used the normalized fluorescence line height (nFLH) from the Moderate Resolution Imaging Spectroradiometer as an indicator of chlorophyll a concentration (Chl a). First, from the spatiotemporal variations of nFLH between 2001 and 2017, a reduction of nFLH after the DwH oil spill was observed (for a relatively long period, from 2011 to 2014). Second, a stepwise multiple regression model was used to examine which of the following environmental factors could explain …
Associations Between Chronic Exposure To Polycyclic Aromatic Hydrocarbons And Health Indices In Gulf Of Mexico Tilefish (Lopholatilus Chamaeleonticeps) Post Deepwater Horizon, Susan M. Syder, Erin Pulster, Steven Murawski
Associations Between Chronic Exposure To Polycyclic Aromatic Hydrocarbons And Health Indices In Gulf Of Mexico Tilefish (Lopholatilus Chamaeleonticeps) Post Deepwater Horizon, Susan M. Syder, Erin Pulster, Steven Murawski
C-IMAGE Publications
A time series of polycyclic aromatic hydrocarbon (PAH) data was collected for Gulf of Mexico demersal fishes in the years following the Deepwater Horizon oil spill (2012–2017). Tilefish (Lopholatilus chamaeleonticeps ) were sampled via demersal longline at repeat stations in the northern Gulf of Mexico in 2012 to 2015 and 2017. Bile samples (n = 256) were analyzed via high‐performance liquid chromatography with fluorescence detection for PAH metabolites as a biomarker of exposure to PAHs. Liver tissues (n = 230) were analyzed for accumulation of PAHs and alkylated homologs via quick, easy, cheap, effective, rugged, and safe …
Natural And Anthropogenic Oil Impacts On Benthic Foraminifera In The Southern Gulf Of Mexico, M. L. Machain-Castillo, A. C. Ruiz-Fernández, Adolfo Gracia, J. A. Sanchez-Cabeza, A. Rodríguez-Ramírez, H. M. Alexander-Valdés, L. H. Pérez-Bernal, X. A. Nava-Fernández, L. E. Gómez-Lizárraga, L. Almaraz-Ruiz, Patrick Schwing, David Hollander
Natural And Anthropogenic Oil Impacts On Benthic Foraminifera In The Southern Gulf Of Mexico, M. L. Machain-Castillo, A. C. Ruiz-Fernández, Adolfo Gracia, J. A. Sanchez-Cabeza, A. Rodríguez-Ramírez, H. M. Alexander-Valdés, L. H. Pérez-Bernal, X. A. Nava-Fernández, L. E. Gómez-Lizárraga, L. Almaraz-Ruiz, Patrick Schwing, David Hollander
Marine Science Faculty Publications
The Campeche Sound is the major offshore oil producing area in the Southern Gulf of Mexico (SGoM). To evaluate the impact of oil related activities in the ocean floor sediments, we analyzed the geochemical (major and trace element, organic carbon and hydrocarbon concentrations) and biological (benthic foraminifera) composition of 62 superficial sediment samples, from 13 to 1336 m water depth. Cluster and Factor analysis of all the variables indicate that their distribution patterns are mainly controlled by differences between the terrigenous and carbonate platforms in the SGoM. Benthic foraminiferal assemblages were abundant and diverse, and their distribution patterns are mainly …
Decomposition Of Sediment-Oil-Agglomerates In A Gulf Of Mexico Sandy Beach, Ioana Bociu, Boryoung Shin, Wm Brian Wells, Joel E Kostka, Konstantinos T Konstantinidis, Markus Huettel
Decomposition Of Sediment-Oil-Agglomerates In A Gulf Of Mexico Sandy Beach, Ioana Bociu, Boryoung Shin, Wm Brian Wells, Joel E Kostka, Konstantinos T Konstantinidis, Markus Huettel
C-IMAGE Publications
Sediment-oil-agglomerates (SOA) are one of the most common forms of contamination impacting shores after a major oil spill; and following the Deepwater Horizon (DWH) accident, large numbers of SOAs were buried in the sandy beaches of the northeastern Gulf of Mexico. SOAs provide a source of toxic oil compounds, and although SOAs can persist for many years, their long-term fate was unknown. Here we report the results of a 3-year in-situ experiment that quantified the degradation of standardized SOAs buried in the upper 50 cm of a North Florida sandy beach. Time series of hydrocarbon mass, carbon content, n-alkanes, PAHs, …
Density-Dependent Condition And Growth Of Invasive Lionfish In The Northern Gulf Of Mexico, Kristin A. Dahl, Morgan A. Edwards, William F. Patterson Iii
Density-Dependent Condition And Growth Of Invasive Lionfish In The Northern Gulf Of Mexico, Kristin A. Dahl, Morgan A. Edwards, William F. Patterson Iii
C-IMAGE Publications
Absent natural population control, invasive red lionfish Pterois volitans (hereafter, lionfish) have reached record densities in the northern Gulf of Mexico (nGOM), though the role of density dependence on their population dynamics remains poorly understood. This study examined the effects of population density, sex, and habitat on lionfish condition (i.e. mass relative to total length) and size-at-age. Lionfish density was estimated with a remotely operated vehicle during 2010-2017 at a series of nGOM natural (n = 16) and artificial (n = 22) reefs, and individual lionfish (n = 3296) were sampled at additional reefs in the same system between 2013 …
Evolving And Sustaining Ocean Best Practices And Standards For The Next Decade, Frank Muller-Karger
Evolving And Sustaining Ocean Best Practices And Standards For The Next Decade, Frank Muller-Karger
Marine Science Faculty Publications
The oceans play a key role in global issues such as climate change, food security, and human health. Given their vast dimensions and internal complexity, efficient monitoring and predicting of the planet’s ocean must be a collaborative effort of both regional and global scale. A first and foremost requirement for such collaborative ocean observing is the need to follow well-defined and reproducible methods across activities: from strategies for structuring observing systems, sensor deployment and usage, and the generation of data and information products, to ethical and governance aspects when executing ocean observing. To meet the urgent, planet-wide challenges we face, …
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
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 …
Petrocarbon Evolution: Ramped Pyrolysis/Oxidation And Isotopic Studies Of Contaminated Oil Sediments From The Deepwater Horizon Oil Spill In The Gulf Of Mexico, Kelsey L. Rogers, Samantha H. Bosman, Mary Lardie-Gaylord, Ann Mcnichol, Brad E. Rosenheim, Joseph P. Montoya, Jeffrey P. Chanton
Petrocarbon Evolution: Ramped Pyrolysis/Oxidation And Isotopic Studies Of Contaminated Oil Sediments From The Deepwater Horizon Oil Spill In The Gulf Of Mexico, Kelsey L. Rogers, Samantha H. Bosman, Mary Lardie-Gaylord, Ann Mcnichol, Brad E. Rosenheim, Joseph P. Montoya, Jeffrey P. Chanton
C-IMAGE Publications
Hydrocarbons released during the Deepwater Horizon (DWH) oil spill weathered due to exposure to oxygen, light, and microbes. During weathering, the hydrocarbons’ reactivity and lability was altered, but it remained identifiable as “petrocarbon” due to its retention of the distinctive isotope signatures (14C and 13C) of petroleum. Relative to the initial estimates of the quantity of oil-residue deposited in Gulf sediments based on 2010–2011 data, the overall coverage and quantity of the fossil carbon on the seafloor has been attenuated. To analyze recovery of oil contaminated deep-sea sediments in the northern Gulf of Mexico we tracked the …
Anaerobic Degradation Of Hexadecane And Phenanthrene Coupled To Sulfate Reduction By Enriched Consortia From Northern Gulf Of Mexico Seafloor Sediment, Boryoung Shin, Minjae Kim, Karsten Zengler, Kuk-Jeong Chin, Will A. Overholt, Lisa M. Gieg, Konstantinos T. Konstantinidis, Joel E. Kostka
Anaerobic Degradation Of Hexadecane And Phenanthrene Coupled To Sulfate Reduction By Enriched Consortia From Northern Gulf Of Mexico Seafloor Sediment, Boryoung Shin, Minjae Kim, Karsten Zengler, Kuk-Jeong Chin, Will A. Overholt, Lisa M. Gieg, Konstantinos T. Konstantinidis, Joel E. Kostka
C-IMAGE Publications
To advance understanding of the fate of hydrocarbons released from the Deepwater Horizon oil spill and deposited in marine sediments, this study characterized the microbial populations capable of anaerobic hydrocarbon degradation coupled with sulfate reduction in non-seep sediments of the northern Gulf of Mexico. Anaerobic, sediment-free enrichment cultures were obtained with either hexadecane or phenanthrene as sole carbon source and sulfate as a terminal electron acceptor. Phylogenetic analysis revealed that enriched microbial populations differed by hydrocarbon substrate, with abundant SSU rRNA gene amplicon sequences from hexadecane cultures showing high sequence identity (up to 98%) to Desulfatibacillum alkenivorans (family Desulfobacteraceae), …
Assessing Seasonality And Density From Passive Acoustic Monitoring Of Signals Presumed To Be From Pygmy And Dwarf Sperm Whales In The Gulf Of Mexico, John A. Hildebrand, Kaitlin E. Fraiser, Simone Baumann-Pickering, Sean M. Wiggins, Karlina P. Merkens, Lance P. Garrison, Melissa S. Soldevilla, Mark A. Mcdonald
Assessing Seasonality And Density From Passive Acoustic Monitoring Of Signals Presumed To Be From Pygmy And Dwarf Sperm Whales In The Gulf Of Mexico, John A. Hildebrand, Kaitlin E. Fraiser, Simone Baumann-Pickering, Sean M. Wiggins, Karlina P. Merkens, Lance P. Garrison, Melissa S. Soldevilla, Mark A. Mcdonald
C-IMAGE Publications
Pygmy sperm whales (Kogia breviceps) and dwarf sperm whales (Kogia sima) are deep diving cetaceans that commonly strand along the coast of the southeast US, but that are difficult to study visually at sea because of their elusive behavior. Conventional visual surveys are thought to significantly underestimate the presence of Kogia and they have proven difficult to approach for tracking and tagging. An approach is presented for density estimation of signals presumed to be from Kogia spp. based on passive acoustic monitoring data collected at sites in the Gulf of Mexico (GOM) from the period following …
De Novo Assembly And Transcriptome Dataset Of Liver, Testis And Head Kidney From Red Drum (Sciaenops Ocellatus), Tracy A. Sherwood, Kevan L. Main, Dana L. Wetzel
De Novo Assembly And Transcriptome Dataset Of Liver, Testis And Head Kidney From Red Drum (Sciaenops Ocellatus), Tracy A. Sherwood, Kevan L. Main, Dana L. Wetzel
C-IMAGE Publications
Red drum (Sciaenops ocellatus) is an estuarine Sciaenid with high commercial value and recreational demand. During the past 50 years, overfishing has caused declines in the population that resulted in the development of red drum commercial and stock enhancement aquaculture fisheries. Despite the potential high economic value in both wild and aquaculture commercial fisheries the availability of transcriptomic data for red drum in public databases is limited. The data here represents the transcriptome profiles of three tissues: liver, testis and head kidney from red drum. The data was generated using Illumina high-throughput RNA sequencing, Trinity for de novo …
Sources Of Carbon To Suspended Particulate Organic Matter In The Northern Gulf Of Mexico, Kelsey L. Rogers, Samantha H Bosman, Sarah Weber, Cedric Magen, Joseph P. Montoya, Jeffrey Chanton
Sources Of Carbon To Suspended Particulate Organic Matter In The Northern Gulf Of Mexico, Kelsey L. Rogers, Samantha H Bosman, Sarah Weber, Cedric Magen, Joseph P. Montoya, Jeffrey Chanton
C-IMAGE Publications
Suspended particulate organic carbon (POCsusp) in the Gulf of Mexico is unique compared to other seas and oceans. In addition to surface primary production, isotopic analysis indicates that microbial cycling of oil and riverine inputs are primary sources of carbon to POCsusp in the Gulf. To characterize POCsusp from seep sites and non-seep north central Gulf (NCG) sites potentially affected by the Deepwater Horizon (DWH) spill, we analyzed 277 and 123 samples for δ13C and Δ14C signatures, respectively. Depth, partitioned into euphotic ( < 300 m) and deep ( > 300 m), was the main driver of spatial δ …
Dispersant Enhances Hydrocarbon Degradation And Alters The Structure Of Metabolically Active Microbial Communities In Shallow Seawater From The Northeastern Gulf Of Mexico, Xiaoxu Sun, Lena Chu, Elisa Mercando, Isabel Romero, David Hollander, Joel E Kostka
Dispersant Enhances Hydrocarbon Degradation And Alters The Structure Of Metabolically Active Microbial Communities In Shallow Seawater From The Northeastern Gulf Of Mexico, Xiaoxu Sun, Lena Chu, Elisa Mercando, Isabel Romero, David Hollander, Joel E Kostka
C-IMAGE Publications
Dispersant application is a primary emergency oil spill response strategy and yet the efficacy and unintended consequences of this approach in marine ecosystems remain controversial. To address these uncertainties, ex situ incubations were conducted to quantify the impact of dispersant on petroleum hydrocarbon (PHC) biodegradation rates and microbial community structure at as close as realistically possible to approximated in situ conditions [2 ppm v/v oil with or without dispersant, at a dispersant to oil ratio (DOR) of 1:15] in surface seawater. Biodegradation rates were not substantially affected by dispersant application at low mixing conditions, while under completely dispersed conditions, biodegradation …