Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997
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 af...
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crwiley:10.1046/j.1365-2419.2001.00156.x 2024-06-23T07:51:44+00:00 Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 Baduini, C. L. Hyrenbach, K. D. Coyle, K. O. Pinchuk, A. Mendenhall, V. Hunt, G. L. 2001 http://dx.doi.org/10.1046/j.1365-2419.2001.00156.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2419.2001.00156.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2419.2001.00156.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 10, issue 1, page 117-130 ISSN 1054-6006 1365-2419 journal-article 2001 crwiley https://doi.org/10.1046/j.1365-2419.2001.00156.x 2024-06-11T04:42:12Z 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. Article in Journal/Newspaper Bering Sea Nunivak Nunivak Island Puffinus tenuirostris Thysanoessa raschii Wiley Online Library Bering Sea Fisheries Oceanography 10 1 117 130 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Baduini, C. L. Hyrenbach, K. D. Coyle, K. O. Pinchuk, A. Mendenhall, V. Hunt, G. L. |
spellingShingle |
Baduini, C. L. Hyrenbach, K. D. Coyle, K. O. Pinchuk, A. Mendenhall, V. Hunt, G. L. Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
author_facet |
Baduini, C. L. Hyrenbach, K. D. Coyle, K. O. Pinchuk, A. Mendenhall, V. Hunt, G. L. |
author_sort |
Baduini, C. L. |
title |
Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
title_short |
Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
title_full |
Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
title_fullStr |
Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
title_full_unstemmed |
Mass mortality of short‐tailed shearwaters in the south‐eastern Bering Sea during summer 1997 |
title_sort |
mass mortality of short‐tailed shearwaters in the south‐eastern bering sea during summer 1997 |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1046/j.1365-2419.2001.00156.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2419.2001.00156.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2419.2001.00156.x |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Nunivak Nunivak Island Puffinus tenuirostris Thysanoessa raschii |
genre_facet |
Bering Sea Nunivak Nunivak Island Puffinus tenuirostris Thysanoessa raschii |
op_source |
Fisheries Oceanography volume 10, issue 1, page 117-130 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2419.2001.00156.x |
container_title |
Fisheries Oceanography |
container_volume |
10 |
container_issue |
1 |
container_start_page |
117 |
op_container_end_page |
130 |
_version_ |
1802642859022614528 |