Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK
Our long term goals are to understand (1) the biological-physical oceanographic characteristics and mechanisms on the shelf near Barrow, AK that together produce a favorable feeding environment for the bowhead whale there and (2) the potential impact of climate change, particularly the ongoing reduc...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA574605 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA574605 |
id |
ftdtic:ADA574605 |
---|---|
record_format |
openpolar |
spelling |
ftdtic:ADA574605 2023-05-15T15:39:40+02:00 Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK Ashjian, Carin J Campbell, Robert G Okkonen, Stephen R Stafford, Kathleen M WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF BIOLOGY 2012-09-30 text/html http://www.dtic.mil/docs/citations/ADA574605 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA574605 en eng http://www.dtic.mil/docs/citations/ADA574605 Approved for public release; distribution is unlimited. DTIC Biological Oceanography *WHALES *ZOOPLANKTON ALASKA BEAUFORT SEA CANYONS CLIMATE CHANGE CONTINENTAL SHELVES CONTINENTAL SLOPES SALINITY SEA ICE TEMPERATURE UPWELLING WIND BOWHEAD WHALES BELUGA WHALES EUPHAUSIIDS Text 2012 ftdtic 2016-02-24T10:32:13Z Our long term goals are to understand (1) the biological-physical oceanographic characteristics and mechanisms on the shelf near Barrow, AK that together produce a favorable feeding environment for the bowhead whale there and (2) the potential impact of climate change, particularly the ongoing reduction in sea ice and variability in Pacific Water presence near Barrow, on this feeding environment. This region is a critical feeding area for migrating bowhead whales, particularly during the fall migration (e.g., Lowry et al., 2004). Results from biophysical sampling conducted during August-September 2005- 2008 demonstrated that the oceanography of the shelf is complex, dynamic, and highly variable and that advection is closely coupled to the direction and magnitude of the winds. In addition, oceanographic and atmospheric conditions impact the composition, distribution, and availability of plankton prey for the bowhead whale. Assessment and understanding of interannual and longer-term variability in the physical mechanisms influencing ocean conditions and the resulting distribution and abundance of plankton on the shelf are necessary to predict potential impacts of climate change. Prepared in collaboration with the Graduate School of Oceanography, University of Rhode Island, Narragansett, and the Applied Physical Laboratory, University of Washington, Seattle. The original document contains color images. Text Barrow Beaufort Sea Beluga Beluga* bowhead whale Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK Sea ice Alaska Defense Technical Information Center: DTIC Technical Reports database Lowry ENVELOPE(-64.150,-64.150,-84.550,-84.550) Pacific |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Biological Oceanography *WHALES *ZOOPLANKTON ALASKA BEAUFORT SEA CANYONS CLIMATE CHANGE CONTINENTAL SHELVES CONTINENTAL SLOPES SALINITY SEA ICE TEMPERATURE UPWELLING WIND BOWHEAD WHALES BELUGA WHALES EUPHAUSIIDS |
spellingShingle |
Biological Oceanography *WHALES *ZOOPLANKTON ALASKA BEAUFORT SEA CANYONS CLIMATE CHANGE CONTINENTAL SHELVES CONTINENTAL SLOPES SALINITY SEA ICE TEMPERATURE UPWELLING WIND BOWHEAD WHALES BELUGA WHALES EUPHAUSIIDS Ashjian, Carin J Campbell, Robert G Okkonen, Stephen R Stafford, Kathleen M Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
topic_facet |
Biological Oceanography *WHALES *ZOOPLANKTON ALASKA BEAUFORT SEA CANYONS CLIMATE CHANGE CONTINENTAL SHELVES CONTINENTAL SLOPES SALINITY SEA ICE TEMPERATURE UPWELLING WIND BOWHEAD WHALES BELUGA WHALES EUPHAUSIIDS |
description |
Our long term goals are to understand (1) the biological-physical oceanographic characteristics and mechanisms on the shelf near Barrow, AK that together produce a favorable feeding environment for the bowhead whale there and (2) the potential impact of climate change, particularly the ongoing reduction in sea ice and variability in Pacific Water presence near Barrow, on this feeding environment. This region is a critical feeding area for migrating bowhead whales, particularly during the fall migration (e.g., Lowry et al., 2004). Results from biophysical sampling conducted during August-September 2005- 2008 demonstrated that the oceanography of the shelf is complex, dynamic, and highly variable and that advection is closely coupled to the direction and magnitude of the winds. In addition, oceanographic and atmospheric conditions impact the composition, distribution, and availability of plankton prey for the bowhead whale. Assessment and understanding of interannual and longer-term variability in the physical mechanisms influencing ocean conditions and the resulting distribution and abundance of plankton on the shelf are necessary to predict potential impacts of climate change. Prepared in collaboration with the Graduate School of Oceanography, University of Rhode Island, Narragansett, and the Applied Physical Laboratory, University of Washington, Seattle. The original document contains color images. |
author2 |
WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF BIOLOGY |
format |
Text |
author |
Ashjian, Carin J Campbell, Robert G Okkonen, Stephen R Stafford, Kathleen M |
author_facet |
Ashjian, Carin J Campbell, Robert G Okkonen, Stephen R Stafford, Kathleen M |
author_sort |
Ashjian, Carin J |
title |
Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
title_short |
Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
title_full |
Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
title_fullStr |
Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
title_full_unstemmed |
Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK |
title_sort |
episodic upwelling of zooplankton within a bowhead whale feeding area near barrow, ak |
publishDate |
2012 |
url |
http://www.dtic.mil/docs/citations/ADA574605 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA574605 |
long_lat |
ENVELOPE(-64.150,-64.150,-84.550,-84.550) |
geographic |
Lowry Pacific |
geographic_facet |
Lowry Pacific |
genre |
Barrow Beaufort Sea Beluga Beluga* bowhead whale Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK Sea ice Alaska |
genre_facet |
Barrow Beaufort Sea Beluga Beluga* bowhead whale Episodic Upwelling of Zooplankton within a Bowhead Whale Feeding Area near Barrow, AK Sea ice Alaska |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA574605 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766371696578658304 |