Killer Whale Entanglements in Alaska Summary Report: 1991-2022

Bolling, Z. M.; Wright, S. K.; Teerlink, S. S.; Lyman, E. G.

doi:10.25923/ta1p-5v77

i

Killer Whale Entanglements in Alaska Summary Report: 1991-2022

2023
By Bolling, Z. M. ; Wright, S. K. ; Teerlink, S. S.
Series: NOAA technical memorandum NMFS F/AKR ; 32

Details

Alternative Title:

Killer Whale Entanglements in Alaska: Summary Report 1991-2022
Personal Author:

Bolling, Z. M. ; Wright, S. K. ; Teerlink, S. S. ; Lyman, E. G.
Corporate Authors:

United States. National Marine Fisheries Service. Alaska Regional Office. Protected Resources Division. ; United States. National Ocean Service. Office of National Marine Sanctuaries.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; AKR (Alaska Region) ; NOS (National Ocean Service) ; ONMS (Office of National Marine Sanctuaries)
Description:

This technical memorandum provides a comprehensive summary of 37 killer whale entanglement reports in Alaska from 1991 to 2022. Trawl and longline gear were associated with most reported incidents (n=30). The severity of the entanglements varied, with some whales experiencing no known lasting injury, and others, a majority (n= 25), suffering mortality. There are several factors that correlate with entanglement risk, including gear type, age class, and seasonality. Additionally, we summarize techniques, strategies, and best practices for entanglement responders and review potential bycatch mitigation tactics. This technical memorandum is intended to be used as a resource for researchers, policy makers, and stakeholders working to better understand and lessen the impacts of entangling materials, including fishing gear, on killer whales in Alaska.
Series:

NOAA technical memorandum NMFS F/AKR ; 32
DOI:

https://doi.org/10.25923/ta1p-5v77
Format:

PDF
Document Type:

Technical Memorandum
Place as Subject:

Alaska ; North Pacific Ocean
License:

https://creativecommons.org/publicdomain/zero/1.0/
Rights Information:

CC0 Public Domain
Compliance:

Submitted
Download URL:

https://repository.library.noaa.gov/view/noaa/56185/noaa_56185_DS1.pdf
File Type:

[PDF - 4.82 MB]
Collection(s):

National Ocean Service (NOS) ; National Marine Fisheries Service (NMFS)
Main Document Checksum:

urn:sha-512:7d1d812050f320eed7cfb63ef9a14580623785526d4f30b8ea7d4b2dfcef7f0385bffe5eb1b949d86c779fb0b8527dbe7e136a8d27c0e400723d98b6f2bef7e1

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