Board Ac)on on the Report Inges)on and Effects of Dispersed Oil on - - PDF document

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5/1/13 Board Ac)on on the Report Inges)on and Effects of Dispersed Oil on Marine Zooplankton by Richard Lee Skidaway Ins7tute of Oceanography, Savannah, GA C130 Hercules Drops Dispersant on the Deepwater Horizon Spill 1 5/1/13 Agenda

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Board Ac)on on the Report ‐ Inges)on and Effects of Dispersed Oil

n Marine Zooplankton

by Richard Lee

Skidaway Ins7tute of Oceanography, Savannah, GA

C‐130 Hercules Drops Dispersant on the Deepwater Horizon Spill

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This agenda item asks the board to approve the final report funded under this project 7tled “Inges7on and Effects of Dispersed Oil on Marine Zooplankton” Background ‐

Review of recent research regarding:
the uptake and effects of dispersed oil by

zooplankton (large plankton from the animal kingdom, i.e. not plants), and

iden7fies gaps in the research where further

inves7ga7on is needed

September 2012 – Board presenta7on on the dra[

report by Dick Lee of the Skidaway Ins7tute of Oceanography

Agenda Item Evidence of Inges)on of Oil by Zooplankton aBer a Spill

Copepods with oil droplets found in areas of large oil

spills

Crab larvae with oil droplets off the coast of

Louisiana a[er Deepwater Horizon spill

Zooplankton collected a[er Deepwater Horizon spill

had deple7on of C13 and petroleum PAHs

Laboratory studies have shown inges7on of oil

droplets by salps and copepods

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Fecal pellets with oil droplets being formed in gut of a

doliolid. Ready for discharge.

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Gaps and Priori)es in Future Research

Iden7fied a number of major gaps in research focusing on the dispersant and oil effects on marine zooplankton that can be used to guide future research. Some

f these include;
Perhaps the highest priority for the PWS region is to determine the effects of

dispersants and dispersed oil on important zooplankton groups, par7cularly herring larvae

Un7l recently most studies with dispersants and dispersed oil have used

estuarine or nearshore zooplankton

Rela7vely few studies have been carried out on open ocean zooplankton
More sublethal effects research on the reproduc7on and growth of open
cean zooplankton, par7cularly fish larvae, that have previously shown to be

quite sensi7ve to low concentra7ons of dispersed oil

Lethal and sublethal effects research of the non‐ionic surfactants versus ionic

surfactants present in commercial dispersants

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Requested Board Ac)on

Accept the final report funded under this project