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Articles 1 - 15 of 15
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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 …
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 …
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 …