Bowhead whale distribution and relative density in relation to remote-sensed physical and biological environmental data in the Pacific Arctic, 2014-2019

Brower, A.; Ferguson, M.; Willoughby, A.

doi:10.25923/04ms-fg30

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Bowhead whale distribution and relative density in relation to remote-sensed physical and biological environmental data in the Pacific Arctic, 2014-2019

2022
By Brower, A. ; Ferguson, M. ; Willoughby, A.
Series: NOAA technical memorandum NMFS-AFSC ; 438

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Personal Author:

Brower, A. ; Ferguson, M. ; Willoughby, A.

Brower, A. ; Ferguson, M. ; Willoughby, A. Less -
Corporate Authors:

Alaska Fisheries Science Center (U.S.)
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies)

NMFS (National Marine Fisheries Service) ; AFSC (Alaska Fisheries Science Center) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) Less -
Description:

The 2019 bowhead whale (Balaena mysticetus) autumn migration across the western Beaufort Sea was unprecedented. During line-transect aerial surveys conducted during 2019 as part of the Aerial Surveys of Arctic Marine Mammals project, bowhead whales were mostly absent in September and October, and whales that were sighted were farther offshore and in deeper water than previous survey years with similarly light sea ice cover. These results were consistent with observations from subsistence hunters from Utqiaġvik, Nuiqsut, and Kaktovik, Alaska. To investigate this anomalous migration, we conducted a preliminary investigation that incorporated a visual assessment of spatial patterns between bowhead whale relative density and remotely sensed physical and biological variables (sea ice, sea surface temperature, chlorophyll a, and net primary productivity of carbon) at the temporal resolution of one month over the period from 2014 to 2019.
Keywords:

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ASAMM Beaufort Bowhead Whale Migration Remote Sensing
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NOAA technical memorandum NMFS-AFSC ; 438
DOI:

https://doi.org/10.25923/04ms-fg30
Document Type:

Technical Memorandum
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Public Domain
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Submitted
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urn:sha256:3cead7134cd820800d41f1e31ebed37881253e0e1c2507913b8a1010cfdc9118
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https://repository.library.noaa.gov/view/noaa/43044/noaa_43044_DS1.pdf
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Bowhead whale distribution and relative density in relation to remote-sensed physical and biological environmental data in the Pacific Arctic, 2014-2019

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