Effects of the Exxon Valdez oil spill on the abundance and distribution of humpback whales (Megaptera novaeangliae) in Prince William Sound

Dahlheim, Marilyn E.; Von Ziegesar, Olga

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Effects of the Exxon Valdez oil spill on the abundance and distribution of humpback whales (Megaptera novaeangliae) in Prince William Sound

1993
By Dahlheim, Marilyn E. ; Von Ziegesar, Olga
Series: Marine mammal study ; no. 1

[PDF-1.01 MB]

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Alternative Title:

Exxon Valdez oil spill state/federal natural resource damage assessment final report
Personal Author:

Dahlheim, Marilyn E. ; Von Ziegesar, Olga

Dahlheim, Marilyn E. ; Von Ziegesar, Olga Less -
Corporate Authors:

National Marine Mammal Laboratory (U.S.)
NOAA Program & Office:

NMFS (National Marine Fisheries Service)
Description:

"Photo-identification studies of Prince William Sound humpback whales were conducted from May to September in 1989 and 1990 to assess the impact of the spill on humpback whale life history and ecology. In 1989, concurrent studies were conducted in Southeast Alaska on humpback whales to determine if whales avoided contaminated waters of PrInce William Sound and moved to other northern feeding areas. In 1989, photographic analysis of Prince William humpbacks resulted in the identification of 59 whales. In 1990, 66 whales were documented. More whales were seen in these two seasons than any year previous to the spill. The increase in whale sightings may have been due to the increase in effort during the 1989 and 1990. Because of the difference in survey effort before and after the spill, it is impossible to determine if in the number of humpback whales using the Sound. Distribution varied among years and may be related to prey distribution. Only one Prince William Sound humpback whale was documented to move from Prince William Sound to southeastern Alaska during the 1989 season. Calving rates during 1989 and 1990 were not significantly different than in previous years. No reports of dead stranded humpback whales occurred during the study period. No observations were made of humpback whales swimming through oil"--Abstract.
Content Notes:

Marilyn E. Dahlheim and Olag von Ziegesar.

Title from cover.

"December 1993."

Also available online in PDF.

Includes bibliographical references (pages 16-19).
Keywords:

[+]

Counting Effect Of Oil Spills On Effect Of Water Pollution On Environmental Aspects Geographical Distribution Humpback Whale Monitoring Oil Spills
Series:

Marine mammal study ; no. 1
Document Type:

Miscellaneous
Place as Subject:

Alaska ; Prince William Sound

Alaska ; Prince William Sound Less -
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:a4f2769a351e1cda8c7734c9af4aa6c38b2c8e3c50898eef92454ee1aff788e9
Download URL:

https://repository.library.noaa.gov/view/noaa/3227/noaa_3227_DS1.pdf
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Effects of the Exxon Valdez oil spill on the abundance and distribution of humpback whales (Megaptera novaeangliae) in Prince William Sound

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