Thresholds in marsh resilience to the Deepwater Horizon oil spill

Silliman, Brian R.; Dixon, Philip M.; Wobus, Cameron; He, Qiang; Daleo, Pedro; Hughes, Brent B.; Rissing, Matthew; Willis, Jonathan M.; Hester, Mark W.

doi:10.1038/srep32520

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Thresholds in marsh resilience to the Deepwater Horizon oil spill

2016
By Silliman, Brian R. ; Dixon, Philip M. ; Wobus, Cameron ; ...
Source: Sci Rep. 2016; 6: 32520.

[PDF-1.21 MB]

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Journal Title:

Scientific Reports
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Silliman, Brian R. ; Dixon, Philip M. ; Wobus, Cameron ; He, Qiang ; Daleo, Pedro ; ... More +

Silliman, Brian R. ; Dixon, Philip M. ; Wobus, Cameron ; He, Qiang ; Daleo, Pedro ; Hughes, Brent B. ; Rissing, Matthew ; Willis, Jonathan M. ; Hester, Mark W. Less -
NOAA Program & Office:

DWH (Deepwater Horizon)
Description:

Ecosystem boundary retreat due to human-induced pressure is a generally observed phenomenon. However, studies that document thresholds beyond which internal resistance mechanisms are overwhelmed are uncommon. Following the Deepwater Horizon (DWH) oil spill, field studies from a few sites suggested that oiling of salt marshes could lead to a biogeomorphic feedback where plant death resulted in increased marsh erosion. We tested for spatial generality of and thresholds in this effect across 103 salt marsh sites spanning ~430 kilometers of shoreline in coastal Louisiana, Alabama and Mississippi, using data collected as part of the natural resource damage assessment (NRDA). Our analyses revealed a threshold for oil impacts on marsh edge erosion, with higher erosion rates occurring for ~1–2 years after the spill at sites with the highest amounts of plant stem oiling (90–100%). These results provide compelling evidence showing large-scale ecosystem loss following the Deepwater Horizon oil spill. More broadly, these findings provide rare empirical evidence identifying a geomorphologic threshold in the resistance of an ecosystem to increasing intensity of human-induced disturbance.
Keywords:

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BP Deepwater Horizon Explosion And Oil Spill, 2010 Marshes
Source:

Sci Rep. 2016; 6: 32520.
DOI:

https://dx.doi.org/10.1038/srep32520
Pubmed ID:

27679956
Pubmed Central ID:

PMC5040145
Document Type:

Journal Article
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CC BY
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PMC
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urn:sha256:50958041cdf5c37c5a8a9df4214f0b0ff44d45a1a00d45fe29e8dd67950e3a89
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https://repository.library.noaa.gov/view/noaa/27618/noaa_27618_DS1.pdf
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Thresholds in marsh resilience to the Deepwater Horizon oil spill

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