Cited by 91Marine animal studies overviewAvian ecology and behaviorMarine and fisheries research

Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997

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Baduini, C. L., Hyrenbach, K. D., Coyle, K. O., Pinchuk, A., Mendenhall, V., Hunt, G. L.·2001·Fisheries Oceanography

Abstract

During summer 1997, hundreds of thousands of emaciated short‐tailed shearwaters (Puffinus tenuirostris) died in the south‐eastern Bering Sea. Using strip transect methodology, we documented the distribution and abundance of short‐tailed shearwaters during cruises conducted prior to, during, and after the die‐off, as well as the distributions and abundances of floating carcasses. The distributions and abundances of short‐tailed shearwaters in 1997 were similar to those found during the 1970s and early 1980s. In August–September 1997, we observed 163 floating shearwater carcasses, most of which were between St Paul Island and Nunivak Island. We estimated ≈ 190 000 carcasses were afloat in the study area, about 11% of the surveyed population. Between spring (June) and autumn (August/September), mean net body mass of shearwaters decreased by 19%, mean pectoral muscle mass decreased by 14%, and mean percentage body lipid content decreased by 46%, from 15.6% in spring to 8.4% in autumn. Compared with spring, short‐tailed shearwater diets broadened in autumn 1997, to include, in addition to adult euphausiids Thysanoessa raschii, juveniles of T. inermis, T. raschii and T. spinifera, crab megalops, fish and squid. We discuss how the ecosystem anomalies in the south‐eastern Bering Sea during spring and summer 1997 relate to the mortality event and suggest possible implications of long‐term climate change for populations of apex predators in the south‐eastern Bering Sea.

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Crossref · 10.1046/j.1365-2419.2001.00156.x

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  • Ocean warming associated with climate change has precipitated bottom-up trophic cascades that have restructured both benthic and pelagic food webs and driven declines in shearwaters and auklets.

    “More recently, ocean warming associated with climate change has precipitated bottom-up trophic cascades, analogous to those proposed here for terrestrial systems, which have restructured both benthic and pelagic food webs and driven declines in shearwaters and auklets (112–114).”

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Authors
Baduini, C. L., Hyrenbach, K. D., Coyle, K. O., Pinchuk, A., Mendenhall, V., & Hunt, G. L.
Affiliations
  • University of California, Irvine (US)
  • Scripps Institution of Oceanography (US)
  • University of Alaska Fairbanks (US)
  • United States Fish and Wildlife Service (US)
Corresponding author
  • Baduini, C. L.
  • Mendenhall, V.
Venue
Fisheries Oceanography
Publisher
Wiley
Published
2001-03
Volume
10
Issue
1
Pages
117-130
ISSN
  • 1054-6006 (ISSN-L)
  • 1365-2419
OpenAlex
W2086417370
Cited by
91
References
55
Citations by year
2026: 3 · 2025: 1 · 2024: 4 · 2023: 4 · 2022: 3 · 2021: 6 · 2020: 3 · 2019: 1 · 2018: 5 · 2017: 3 · 2016: 2 · 2014: 2 · 2013: 4 · 2012: 3
FWCI
9.42
Type
journal article
Language
en
Open access
Locations
  • Fisheries Oceanography (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
U.S. Fish and Wildlife Service
Topics
  • Physical Sciences › Environmental Science › Ecology › Marine animal studies overview
  • Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
Keywords
short-tailed shearwater, Puffinus tenuirostris, mass mortality, emaciation, weight loss, body fat content, diet composition, krill, Thysanoessa raschii, Thysanoessa inermis, Thysanoessa spinifera, climate change, top predators

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