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Project Information

Title: Surveys to Monitor Marine Bird Abundance in PWS During Winter and Summer 2005

Project Year and Number: 2005: 050751

Other Fiscal Years and Numbers for this Project: 2011: 10100751, 2010: 10100751, 2008: 080751, 2007: 070751, 2004: 040159, 2002: 02159, 2001: 01159, 2000: 00159, 1999: 99159, 1998: 98159, 1997: 97159-CLO, 1996: 96159, 1994: 94159, 1993: 93045

Principal Investigator (PI): David Irons, US Fish & Wildlife Service

Assisting Personnel: None

Research Location: Prince William Sound

Restoration Category: Monitoring

Injured Resources Addressed: Bald Eagles , Black Oystercatchers , Common Loons , Common Murres , Cormorants , Harlequin Ducks , Kittlitz's Murrelets , Marbled Murrelets , Pigeon Guillemot , Sea Otters

Abstract: This project will conduct small boat surveys to monitor abundance of marine birds and sea otters (Enhydra lutris) in Prince William Sound, Alaska during March and July 2005. Seven previous surveys have monitored population trends for >65 bird and 8 marine mammal species in Prince William Sound after the Exxon Valdez Oil Spill. We will use data collected in 2005 to examine trends from summer 1989-2005 and from winter 1990-2005 by determining whether populations in the oiled zone changed at the same rate as those in the unoiled zone. We will also examine overall population trends for the Sound from 1989-2005. Due to the lack of data prior to the Exxon Valdez oil spill, continued monitoring of marine birds and sea otters is needed to determine whether populations injured by the spill are recovering. Data collected in 2000 indicated that bald eagles (Haliaeetus leucocephalus) are increasing in winter and summer throughout Prince William Sound, harlequin ducks (Histrionicus histrionicus) are increasing in the oiled area in winter, and black oystercatchers are increasing throughout Prince William Sound in summer. Numbers of all other injured species are either not changing or are declining in the oiled area. Common loons (Gavia immer), cormorants (Phalacrocorax spp.), and common murres (Uria aalgae) are showing no trend in the oiled area; pigeon guillemots (Cepphus columba) and marbled murrelets (Brachyramphus marmoratus) are declining in the oiled areas of Prince William Sound and Kittlitz’s Murrelet (Brachyramphus brevirostris) is declining throughout Prince William Sound. Results of these surveys up through 1998 have been published by Irons et al. (2000) and Lance et al. (2001). Analyses of these survey data are the only ongoing means to evaluate the recovery of most of these injured species. A final report will be written upon completion of the project that will address population status of species observed during the survey.


Keywords

Geographic Regions Gulf of Alaska
Prince William Sound
Species Marine Mammals - Sea Otters
Seabirds - Sea ducks
Fields of Expertise Ecology

Proposal: View PDF (2,236 KB)

Funding Recommendations: View

Funding Detail For: 2005 , 2006

Quarterly Project Tasks For: 2005 , 2006

Other materials associated with this project: View

Annual Reports: 2005: Not Applicable 2006: Not Applicable

Final Report: View

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
2011: 10100751 View (PDF) 2011: View (PDF)
2010: View (PDF)
View No datasets
2008: 080751 View (PDF) 2008: Due 09/01/2008
View No datasets
2007: 070751 View (PDF) 2007: View (PDF)
See Project 080751 See Project 080751
2004: 040159 View (PDF) 2004: View (PDF)
See Project 050751 See Project 050751
2002: 02159 View (PDF) 2002: Not Available
See Project 050751 See Project 050751
2001: 01159 View (PDF) 2001: Not Available
See Project 050751 See Project 050751
2000: 00159 Not Available 2000: View (PDF)
See Project 050751 See Project 050751
1999: 99159 Not Available 1999: Not Available
See Project 050751 See Project 050751
1998: 98159 Not Available 1998: View (PDF)
See Project 050751 See Project 050751
1997: 97159-CLO Not Available 1997: Not Available
See Project 96159 See Project 96159
1996: 96159 Not Available 1996: Not Available
View No datasets
1994: 94159 Not Available 1994: Not Available
View No datasets
1993: 93045 Not Available 1993: Not Applicable
View No datasets