LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999
Puffinus tenuirostris mortality in the south-eastern Bering Sea, 1997–1999. Marine Ornithology 29: 11–18. During 1997, hundreds of thousands of Short-tailed Shearwaters Puffinus tenuirostris starved to death in the Bering Sea. We surveyed the distribution and abundance of floating carcasses during a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.172.1352 2023-05-15T15:43:24+02:00 LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 K. David Hyrenbach Cheryl L. Baduini George L. Hunt G. L. Line Short-tailed Shearwater The Pennsylvania State University CiteSeerX Archives 2000 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.172.1352 http://www.marineornithology.org/PDF/29_1/29_1_3.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.172.1352 http://www.marineornithology.org/PDF/29_1/29_1_3.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.marineornithology.org/PDF/29_1/29_1_3.pdf text 2000 ftciteseerx 2016-01-07T16:03:39Z Puffinus tenuirostris mortality in the south-eastern Bering Sea, 1997–1999. Marine Ornithology 29: 11–18. During 1997, hundreds of thousands of Short-tailed Shearwaters Puffinus tenuirostris starved to death in the Bering Sea. We surveyed the distribution and abundance of floating carcasses during a cruise between 27 August–12 September, and estimated that over 95 000 carcasses were afloat within three survey grids covering approximately 52 400 km 2. We repeatedly surveyed the same areas during two subsequent cruises in 1998 and 1999, and used standard population sampling techniques to evaluate the background levels of shearwater mortality during additional years when a die-off did not occur. The mortality event we observed in 1997 was unusual due to its extent and magnitude. During the die-off, dead shearwaters were sighted within all three survey grids. Conversely, we only encountered carcasses at one of these sites in 1998. Moreover, carcass densities in 1997 were at least one order of magnitude higher than those recorded during the following year. Surveys of seabird mortality at sea can account for floating carcasses before they are lost through advection and scavenging. Therefore, vessel-based surveys are likely to improve the accuracy of seabird mortality estimates based solely on counts of beach-cast carcasses. Here we describe the use of line transects to estimate seabird mortality at sea, and offer suggestions to standardize future surveys. Standardized Text Bering Sea Puffinus tenuirostris Unknown Bering Sea |
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Open Polar |
collection |
Unknown |
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ftciteseerx |
language |
English |
description |
Puffinus tenuirostris mortality in the south-eastern Bering Sea, 1997–1999. Marine Ornithology 29: 11–18. During 1997, hundreds of thousands of Short-tailed Shearwaters Puffinus tenuirostris starved to death in the Bering Sea. We surveyed the distribution and abundance of floating carcasses during a cruise between 27 August–12 September, and estimated that over 95 000 carcasses were afloat within three survey grids covering approximately 52 400 km 2. We repeatedly surveyed the same areas during two subsequent cruises in 1998 and 1999, and used standard population sampling techniques to evaluate the background levels of shearwater mortality during additional years when a die-off did not occur. The mortality event we observed in 1997 was unusual due to its extent and magnitude. During the die-off, dead shearwaters were sighted within all three survey grids. Conversely, we only encountered carcasses at one of these sites in 1998. Moreover, carcass densities in 1997 were at least one order of magnitude higher than those recorded during the following year. Surveys of seabird mortality at sea can account for floating carcasses before they are lost through advection and scavenging. Therefore, vessel-based surveys are likely to improve the accuracy of seabird mortality estimates based solely on counts of beach-cast carcasses. Here we describe the use of line transects to estimate seabird mortality at sea, and offer suggestions to standardize future surveys. Standardized |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
K. David Hyrenbach Cheryl L. Baduini George L. Hunt G. L. Line Short-tailed Shearwater |
spellingShingle |
K. David Hyrenbach Cheryl L. Baduini George L. Hunt G. L. Line Short-tailed Shearwater LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
author_facet |
K. David Hyrenbach Cheryl L. Baduini George L. Hunt G. L. Line Short-tailed Shearwater |
author_sort |
K. David Hyrenbach |
title |
LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
title_short |
LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
title_full |
LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
title_fullStr |
LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
title_full_unstemmed |
LINE TRANSECT ESTIMATES OF SHORT-TAILED SHEARWATER PUFFINUS TENUIROSTRIS MORTALITY IN THE SOUTH-EASTERN BERING SEA, 1997–1999 |
title_sort |
line transect estimates of short-tailed shearwater puffinus tenuirostris mortality in the south-eastern bering sea, 1997–1999 |
publishDate |
2000 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.172.1352 http://www.marineornithology.org/PDF/29_1/29_1_3.pdf |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Puffinus tenuirostris |
genre_facet |
Bering Sea Puffinus tenuirostris |
op_source |
http://www.marineornithology.org/PDF/29_1/29_1_3.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.172.1352 http://www.marineornithology.org/PDF/29_1/29_1_3.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766377490381537280 |