Effects of COREXIT® EC9500A on bacteria from a beach oiled by the Deepwater Horizon spill

Hamdan, Leila J.; Fulmer, Preston A.

doi:10.3354/ame01482

Cited by 111 publications

(89 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach degrades the oil directly at the source, which minimizes intact oil at the water's surface, and assures minimal shoreline damage. Dispersants have been found to have an accelerating effect on bacteria growth and the rate of natural biodegradation in some studies (Baelum et al 2012), but a slowing down effect in others (Hamdan and Fulmer 2011). Regardless, chemical dispersants are not very effective in degrading oil in wave-sheltered and low salinity areas because of a lack of hydrodynamic mixing (Chapman et al 2007).…”

Section: Disaster Managementmentioning

confidence: 99%

Consequences of oil spills: a review and framework for informing planning

Chang¹,

Stone²,

Demes³

et al. 2014

E&S

256

132

View full text Add to dashboard Cite

ABSTRACT. As oil transportation worldwide continues to increase, many communities are at risk of oil spill disasters and must anticipate and prepare for them. Factors that influence oil spill consequences are myriad and range from the biophysical to the social. We provide a summary literature review and overview framework to help communities systematically consider the factors and linkages that would influence consequences of a potential oil spill. The focus is on spills from oil tanker accidents. Drawing primarily on empirical studies of previous oil spill disasters, we focused on several main domains of interest: the oil spill itself, disaster management, the physical marine environment, marine biology, human health, economy, and policy. Key variables that influence the severity of consequences are identified, and significant interactions between variables are delineated. The framework can be used to clarify the complexity of oil spill impacts, identify lessons that may be transferable from other oil spill disasters, develop scenarios for planning, and inform risk analysis and policy debates in localities that are seeking to understand and reduce their vulnerability to potential spill disasters. As a case study, the framework is used to consider potential oil spills and consequences in Vancouver, Canada. Major increases in oil tanker traffic are anticipated in this region, creating urgent new demands for risk information, disaster management planning, and policy responses. The case study identifies particular conditions that distinguish the Vancouver context from other historic events; in particular, proximity to a densely populated urban area, the type of oil being transported, financial compensation schemes, and local economic structure. Drawing lessons from other oil spill disasters is important but should be undertaken with recognition of these key differences. Some types of impacts that have been relatively inconsequential in previous events may be very significant in a Vancouver case.

show abstract

Section: Disaster Managementmentioning

confidence: 99%

Consequences of oil spills: a review and framework for informing planning

Chang¹,

Stone²,

Demes³

et al. 2014

E&S

256

132

View full text Add to dashboard Cite

show abstract

“…Though there have been few studies published on the effects of dispersants on microbial community profiles (Nyman et al, 2007;Hamdan and Fulmer, 2011) and to our knowledge, there are no published investigations on the effects of dispersant loading on denitrification or N mineralization rates of coastal marsh soils. Therefore, the goal of our study was to determine the effects of a range of Corexit EC9500A additions on two important N cycling processes in coastal wetlands, N mineralization and denitrification.…”

Section: Introductionmentioning

confidence: 89%

“…Soils were exposed to the dispersant at same ratios as used in the Hamdan and Fulmer (2011) study, at Corexit:wet soil ratios of 0:10, 1:10, 1:100, 1:1000 and 1:10 000 for 5 d under anaerobic condition, after which MBN was measured. These rates also provided a broad range in order to determine critical toxic thresholds to the microbial consortia.…”

Section: Microbial Biomass N (Mbn)mentioning

confidence: 99%

“…Toxicity tests of Corexit EC9500A have been conducted on invertebrates and adult fish showing no significant deleterious effects at environmental concentrations, but there has been a paucity of research on the toxicity of dispersants on wetland soil microbial communities (Hamdan and Fulmer, 2011). Microbes facilitate many biogeochemical processes in coastal wetlands and estuaries, including organic matter decomposition, water quality improvements and are the essential regulators of the base of the detrital food chain.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of dispersant used for oil spill remediation on nitrogen cycling in Louisiana coastal salt marsh soil

Pietroski¹,

White²,

DeLaune³

2015

Chemosphere

View full text Add to dashboard Cite

“…Even effects on the microbial world are being examined. For example, Corexit might interfere with the capacity of bacteria from beaches to remediate spills (12). Perhaps the one component of aquatic environments that has never been studied for interactions with Corexit is viruses.…”

mentioning

confidence: 99%

Corexit 9500 Inactivates Two Enveloped Viruses of Aquatic Animals but Enhances the Infectivity of a Nonenveloped Fish Virus

Pham

Huang

Chen

et al. 2014

Appl Environ Microbiol

View full text Add to dashboard Cite

The effects of Corexit 9500, a dispersant used to clean up oil spills, on invertebrates, lower vertebrates, birds, and human health have been examined, but there is a significant lack of study of the effect of this dispersant on aquatic viruses. In this study, the effects of Corexit 9500 on four aquatic viruses of differing structural composition were examined. Corexit 9500 reduced the titer of the enveloped viral hemorrhagic septicemia virus (VHSV) at all concentrations (10% to 0.001%) examined. The titer of frog virus 3 (FV3), a virus with both enveloped and nonenveloped virions, was reduced only at the high Corexit 9500 concentrations (10% to 0.1%). Corexit 9500 was unable to reduce the titer of nonenveloped infectious pancreatic necrosis virus (IPNV) but enhanced the titer of chum salmon reovirus (CSV) by 2 to 4 logs. With the ability to inactivate enveloped viruses and possibly enhance some nonenveloped viruses, Corexit 9500 has the potential to alter the aquatic virosphere.

show abstract

Effects of COREXIT® EC9500A on bacteria from a beach oiled by the Deepwater Horizon spill

Cited by 111 publications

References 28 publications

Consequences of oil spills: a review and framework for informing planning

Consequences of oil spills: a review and framework for informing planning

Effects of dispersant used for oil spill remediation on nitrogen cycling in Louisiana coastal salt marsh soil

Corexit 9500 Inactivates Two Enveloped Viruses of Aquatic Animals but Enhances the Infectivity of a Nonenveloped Fish Virus

Contact Info

Product

Resources

About