Euphausiid transport in the Western Arctic Ocean
The article of record as published may be located at http://dx.doi.org/10.3354/meps07387 Euphausiids are commonly found in the stomachs of bowhead whales Balaena mysticetus hunted near Barrow, Alaska; however, no evidence exists of a self-sustaining population in this region. To explain euphausiid p...
Main Authors: | , , , , , |
---|---|
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2008
|
Subjects: | |
Online Access: | https://hdl.handle.net/10945/40387 |
id |
ftnavalpschool:oai:calhoun.nps.edu:10945/40387 |
---|---|
record_format |
openpolar |
spelling |
ftnavalpschool:oai:calhoun.nps.edu:10945/40387 2024-06-09T07:38:21+00:00 Euphausiid transport in the Western Arctic Ocean Berline, L. Spitz, Y.H. Ashjian, C.J. Campbell, R.G. Maslowski, W. Moore, S.E. Oceanography 2008-05-22 application/pdf https://hdl.handle.net/10945/40387 unknown Marine Ecology Progress Series, Vol. 360: 163-178, 2008 https://hdl.handle.net/10945/40387 This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. Article 2008 ftnavalpschool 2024-05-15T00:40:11Z The article of record as published may be located at http://dx.doi.org/10.3354/meps07387 Euphausiids are commonly found in the stomachs of bowhead whales Balaena mysticetus hunted near Barrow, Alaska; however, no evidence exists of a self-sustaining population in this region. To explain euphausiid presence near Barrow, their transport from the northern Bering Sea was investigated through particle tracking experiments using velocity fields from an ocean general circulation model in 4 contrasted circulation scenarios (1997, 1998, 2002 and 2003). Euphausiids were released during their spawning season (April−June) in the bottom and surface layers in the northern Bering Sea, their endemic region, and tracked through the Chukchi-Beaufort Sea. Results show that both Anadyr Gulf and Shpanberg Strait are potential regions of origin for euphausiids. Topographically steered bottom particles have 4 to 5 times higher probability of reaching Barrow than surface particles (ca. 95% versus 20% of particles). As euphausiids are often found near the bottom on the northern Bering shelf, this suggests a very high probability of euphausiids reaching Barrow, making this location a privileged area for whale feeding. The main pathways to Barrow across the Chukchi Sea shelf are Central Valley (CV) and Herald Valley (HV). The transit to Barrow takes 4 to 20 mo. Arrivals at Barrow have 2 peaks at ca. 200 d (fall, CV particles) and 395 d after release (spring, mixed CV and HV) on average, because of the seasonal cycle of the Chukchi Sea currents. Elevated euphausiid abundance in the fall at Barrow is favored by a high Bering Strait northward transport and by southerly winds, driving organisms through CV rather than through the HV pathway. Article in Journal/Newspaper Anadyr Anadyr' Arctic Arctic Ocean Balaena mysticetus Barrow Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Alaska Naval Postgraduate School: Calhoun Anadyr ENVELOPE(177.510,177.510,64.734,64.734) Anadyr’ ENVELOPE(176.233,176.233,64.882,64.882) Arctic Arctic Ocean Bering Sea Bering Shelf ENVELOPE(-170.783,-170.783,60.128,60.128) Bering Strait Chukchi Sea Herald Valley ENVELOPE(-175.000,-175.000,71.500,71.500) |
institution |
Open Polar |
collection |
Naval Postgraduate School: Calhoun |
op_collection_id |
ftnavalpschool |
language |
unknown |
description |
The article of record as published may be located at http://dx.doi.org/10.3354/meps07387 Euphausiids are commonly found in the stomachs of bowhead whales Balaena mysticetus hunted near Barrow, Alaska; however, no evidence exists of a self-sustaining population in this region. To explain euphausiid presence near Barrow, their transport from the northern Bering Sea was investigated through particle tracking experiments using velocity fields from an ocean general circulation model in 4 contrasted circulation scenarios (1997, 1998, 2002 and 2003). Euphausiids were released during their spawning season (April−June) in the bottom and surface layers in the northern Bering Sea, their endemic region, and tracked through the Chukchi-Beaufort Sea. Results show that both Anadyr Gulf and Shpanberg Strait are potential regions of origin for euphausiids. Topographically steered bottom particles have 4 to 5 times higher probability of reaching Barrow than surface particles (ca. 95% versus 20% of particles). As euphausiids are often found near the bottom on the northern Bering shelf, this suggests a very high probability of euphausiids reaching Barrow, making this location a privileged area for whale feeding. The main pathways to Barrow across the Chukchi Sea shelf are Central Valley (CV) and Herald Valley (HV). The transit to Barrow takes 4 to 20 mo. Arrivals at Barrow have 2 peaks at ca. 200 d (fall, CV particles) and 395 d after release (spring, mixed CV and HV) on average, because of the seasonal cycle of the Chukchi Sea currents. Elevated euphausiid abundance in the fall at Barrow is favored by a high Bering Strait northward transport and by southerly winds, driving organisms through CV rather than through the HV pathway. |
author2 |
Oceanography |
format |
Article in Journal/Newspaper |
author |
Berline, L. Spitz, Y.H. Ashjian, C.J. Campbell, R.G. Maslowski, W. Moore, S.E. |
spellingShingle |
Berline, L. Spitz, Y.H. Ashjian, C.J. Campbell, R.G. Maslowski, W. Moore, S.E. Euphausiid transport in the Western Arctic Ocean |
author_facet |
Berline, L. Spitz, Y.H. Ashjian, C.J. Campbell, R.G. Maslowski, W. Moore, S.E. |
author_sort |
Berline, L. |
title |
Euphausiid transport in the Western Arctic Ocean |
title_short |
Euphausiid transport in the Western Arctic Ocean |
title_full |
Euphausiid transport in the Western Arctic Ocean |
title_fullStr |
Euphausiid transport in the Western Arctic Ocean |
title_full_unstemmed |
Euphausiid transport in the Western Arctic Ocean |
title_sort |
euphausiid transport in the western arctic ocean |
publishDate |
2008 |
url |
https://hdl.handle.net/10945/40387 |
long_lat |
ENVELOPE(177.510,177.510,64.734,64.734) ENVELOPE(176.233,176.233,64.882,64.882) ENVELOPE(-170.783,-170.783,60.128,60.128) ENVELOPE(-175.000,-175.000,71.500,71.500) |
geographic |
Anadyr Anadyr’ Arctic Arctic Ocean Bering Sea Bering Shelf Bering Strait Chukchi Sea Herald Valley |
geographic_facet |
Anadyr Anadyr’ Arctic Arctic Ocean Bering Sea Bering Shelf Bering Strait Chukchi Sea Herald Valley |
genre |
Anadyr Anadyr' Arctic Arctic Ocean Balaena mysticetus Barrow Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Alaska |
genre_facet |
Anadyr Anadyr' Arctic Arctic Ocean Balaena mysticetus Barrow Beaufort Sea Bering Sea Bering Strait Chukchi Chukchi Sea Alaska |
op_relation |
Marine Ecology Progress Series, Vol. 360: 163-178, 2008 https://hdl.handle.net/10945/40387 |
op_rights |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
_version_ |
1801371639074521088 |