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Project Information

Title: Population Dynamics of Brown Bears After EVOS

Project Year and Number: 1991: TM04

Other Fiscal Years and Numbers for this Project: 1990: TM04, 1989: TM04

Principal Investigator (PI): Richard Sellers, Alaska Department of Fish & Game

Assisting Personnel: Sterling Miller

Research Location: Kodiak Island

Restoration Category: Damage Assessment

Injured Resources Addressed: Not Specified

Abstract: We estimated survival and reproductive rates of brown bears (Ursus urctos) on the coast of Katmai National Park, Alaska, during 1989-95 to assess effects of the 1989 Exxon Valdez oil spill. Fifteen percent of fecal samples (n = 27) fiom brown bears captured in 1989 contained hydrocarbons indicative of exposure to crude oil. Females captured in 1989 and 1990 were divided into 2 groups: 12 with multimual relocations that included oiled coastline, and 21 that used unoiled areas. Survival rates during 1989-91 were not different (P > 0.90) between females from oiled versus unoiled areas. Based on the assumption that the availability and toxicity of oil was negligible by 1992, we also compared survival rates of both groups during 1989-91 with 1992-95 and observed no difference (P > 0.40). Recruitment rates during 1989-95 were not different (P = 0.12) between females fiom oiled and unoiled areas. Finite growth rates for the 2 groups suggested both were stable (X = 1.003 and 1.014, respectively, for bears using oiled and unoiled areas).


Keywords

Geographic Regions Cook Inlet
Fields of Expertise Ecology

Proposal: PDF Not Available

Funding Recommendations: View

Funding Detail For: 1991

Quarterly Project Tasks For: 1991

Annual Report: 1991: 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
1990: TM04 Not Available 1990: Not Applicable
See Project TM04 See Project TM04
1989: TM04 Not Available 1989: Not Applicable
See Project TM04 See Project TM04