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50 results for “oil spill”
Data from: Evidence of lasting impact of the Deepwater Horizon oil spill on a deep Gulf of Mexico coral community
A coral community 11 km southwest of the site of the Deepwater Horizon blowout at 1,370 m water depth was discovered 3.5 months after the well was capped on 3 November 2010. Gorgonian corals at the site were partially covered by a brown flocculent material (floc) that contained hydrocarbons fingerprinted to the oil spill. Here we quantify the visible changes to the corals at this site during five visits over 17 months by digitizing images of individual branches of each colony and categorizing their condition. Most of the floc visible in November 2010 was absent from the corals by the third visit in March 2011, and there was a decrease in the median proportions of the colonies showing obvious signs of impact after the first visit. During our second visit in 2010, about six weeks after the first, we documented the onset of hydroid colonization (a sign of coral deterioration) on impacted coral branches that increased over the remainder of the study. Hydroid colonization of impacted portions of coral colonies by the last visit in March 2012 correlated positively with the proportion of the colony covered by floc during the first two visits in late 2010. Similarly, apparent recovery of impacted portions of the coral by March 2012 correlated negatively with the proportion of the coral covered with floc in late 2010. A notable feature of the impact was its patchy nature, both within and among colonies, suggesting that the impacting agent was not homogeneously dispersed during initial contact with the corals. While the median level of obvious visible impact decreased over time, the onset of hydroid colonization and the probability of impacts that were not visually obvious suggest that future visits may reveal additional deterioration in the condition of these normally long-lived corals.
Data from: Evaluation of Blue Crab, Callinectes sapidus, megalopal settlement and condition during the Deepwater Horizon oil spill
The Blue Crab, Callinectes sapidus, is a commercially, culturally, and ecologically significant species in the Gulf of Mexico (GOM), whose offshore stages were likely impacted by the Deepwater Horizon oil spill (DWH). To test for DWH effects and to better understand the planktonic ecology of this species, we monitored Callinectes spp. megalopal settlement and condition at sites within and outside of the spill extent during and one year after the DWH. We tested for DWH effects by comparing 2010 settlement against baseline data available for two sites, and by testing for differences in settlement and condition inside and outside of the spill extent. We also developed time series models to better understand natural drivers of daily settlement variation (seasonal and lunar trends, hydrodynamics, wind) during 2010 and 2011. Overall, we found that neither megalopal settlement nor body weight were significantly reduced at oiled sites, but that high unexplained variation and low statistical power made detection of even large effects unlikely. Time series models revealed remarkably consistent and relatively strong seasonal and lunar trends within sites (explaining on average 28% and 9% of variation, respectively), while wind and hydrodynamic effects were weak (1–5% variation explained) and variable among sites. This study provides insights into DWH impacts as well as the natural drivers of Callinectes spp. megalopal settlement across the northern GOM.
Oil Spill
Oil is a risky business. Trying out particle system in Blender. Source: Objaverse 1.0 / Sketchfab
The mysterious oil spill in the northeastern coast of Brazil: tracking offshore seawater and the need for improved vessel facilities
<p>PAHs and aliphatics data obtained in seawater from NE Brazil</p>
Data from: Gene expression profiling reveals deep-sea coral response to the Deepwater Horizon oil spill
Deep-sea coral communities are key components of the Gulf of Mexico ecosystem and were adversely affected by the Deepwater Horizon (DWH) oil spill. Coral colonies exposed to oil and dispersant exhibited mortality, damage, and physiological signatures of stress. Understanding how corals respond to oil and dispersant exposure at the molecular level is important to elucidate the sub-lethal effects of the DWH disaster, and reveal broader patterns of coral stress responses. Gene expression profiles from RNAseq data were compared between corals at an impacted site and from a reference site. A total of 1,439 differentially expressed genes (≥ 2-fold) were shared among impacted Paramuricea biscaya colonies. Genes involved in oxidative stress, immunity, wound repair, tissue regeneration, and metabolism of xenobiotics were significantly differentially expressed in impacted corals. Enrichment among the over-expressed genes indicates the corals were enduring high metabolic demands associated with cellular stress responses and repair mechanisms. Under-expression of genes vital to toxin processing also suggests a diminished capacity to cope with environmental stressors. Our results provide evidence that deep-sea corals exhibited genome-wide cellular stress responses to oil and dispersant exposure and demonstrate the utility of next-generation sequencing for monitoring anthropogenic impacts in deep waters. These analyses will facilitate the development of diagnostic markers for oil and dispersant exposure in deep-sea invertebrates and inform future oil spill response efforts.
Data from: Deepwater Horizon oil spill impacts on sea turtles could span the Atlantic
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Data from: Spatio-temporal modelling of auk abundance after the Erika oil spill and implications for conservation
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Data from: Projecting the recovery of a long-lived deep-sea octocoral species after the Deepwater Horizon oil spill using structured population models
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Data from: Dramatic shifts in benthic microbial eukaryote communities following the Deepwater Horizon oil spill
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Data from: Evidence of lasting impact of the Deepwater Horizon oil spill on a deep Gulf of Mexico coral community
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A comparative analysis of analytical techniques for rapid oil spill identification
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Data from: Gene expression profiling reveals deep-sea coral response to the Deepwater Horizon oil spill
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Data from: Evaluation of Blue Crab, Callinectes sapidus, megalopal settlement and condition during the Deepwater Horizon oil spill
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Data from: Spatio-temporal models reveal subtle changes to demersal communities following the Exxon Valdez oil spill
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Data from: Long-term reproductive impairment in a seabird after the Prestige oil spill
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Data from: Fluctuating asymmetry in Menidia beryllina before and after the 2010 DeepWater Horizon oil spill
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Predation on Vachellia trees in the Evrona Nature Reserve following an oil spill
<p>The Evrona Nature Reserve (southern Israel; 29°40′N, 35°00′E) was affected by two large oil spills in 1975 and 2014, respectively. Between Nov 2019 to Oct 2019, we recorded invertebrate and vertebrate predation rates using the artificial caterpillar method (Howe et al. 2009, Entomol Exp App) in oil-polluted and unpolluted Vachellia trees.</p>
Figure 9. Fresh oil spill from a in Main Pattern of the Caspian Sea Surface Oil Pollution Revealed by Satellite Data
Figure 9. Fresh oil spill from a moving vessel seen in SAR imagery of the Caspian Sea. SAR Sentinel-1A, 7 June 2019, 14:38 UTC. Length of oil spill - 89 km.
Data from: Genetic and epigenetic variation in Spartina alterniflora following the Deepwater Horizon oil spill
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Predation on Vachellia trees in the Evrona Nature Reserve following an oil spill
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.