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Project Information

Title: Nearshore Synthesis: Sea Otters and Sea Ducks

Project Year and Number: 2008: 070808-A

Other Fiscal Years and Numbers for this Project: 2010: 10100808, 2009: 090808, 2008: 070808, 2007: 070808

Principal Investigator (PI): Brenda Ballachey, US Geological Survey

Assisting Personnel: Jim Bodkin, Dan Esler, Keith Miles

Research Location: Prince William Sound

Restoration Category: Research

Injured Resources Addressed: Sea Otters

Abstract: This is an amendment to Project 070808 (Sea Otter Recovery and Nearshore Synthesis). Sea otters, and other nearshore birds and mammals were severely impacted by the 1989 Exxon Valdez oil spill. In areas where acute effects were greatest and lingering oil persists, recovery for some of those nearshore birds and mammals remains incomplete through 2007. We present five objectives in this proposal: (1) Evaluate progress toward nearshore ecosystem recovery through surveys of expression of the Cytochrome P450 1A biomarker; (2) Estimate the frequency of use of oiled intertidal habitats by foraging sea otters; (3) Conduct histopathological examinations of sea otter liver biopsies; (4) Evaluate PCB concentrations in sea otters and sea ducks, and (5) Evaluate expression of an array of genes indicative of injury in sea ducks. Anticipated outcomes will identify the current level of exposure to lingering oil in a suite of nearshore vertebrates, potential pathways of exposure to lingering oil through intertidal foraging by sea otters, the potential contribution of non-EVO contaminants (PCBs) to expression of the P450 biomarker, and the potential for injury at the cellular level in sea otters and sea ducks.


Geographic Regions Prince William Sound
Species Marine Mammals - Sea Otters
Seabirds - Sea ducks
Fields of Expertise Contaminants/Toxicology
Management & Policy
Population Biology
Resource Management
Technological Methods Modeling
Professional Activity Data Synthesis/Visualization
Field research and Data Collection
Ecosystems Marine – Nearshore
Species Specific Research Issues Marine Mammals - Contaminants
Marine Mammals - Distribution and abundance
Marine Mammals - Use of ecosystems indicators
Seabirds - Contaminants
Seabirds - Distribution and abundance
Seabirds - Ecosystems indicators

Proposal: View PDF (283 KB)

Funding Recommendations: View

Funding Detail For: 2008 , 2009

Quarterly Project Tasks For: 2008 , 2009

Annual Reports: 2008: View (25 KB) 2009: Not Applicable

Final Report: See Project 1568

Publications from this Project: None Available

More information may be available for this project under other years:

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Project Number Proposal Annual Reports Final Report Data
2010: 10100808 View (PDF) 2010: Not Applicable
View No datasets
2009: 090808 View (PDF) 2009: Not Applicable
View See Project 10100750
2008: 070808 View (PDF) 2008: View (PDF)
2007: View (PDF)
View See Project 10100750