Marine environment of the eastern and central Aleutian Islands
Abstract To examine the marine habitat of the endangered western stock of the Steller's sea lion ( Eumetopias jubatus ), two interdisciplinary research cruises (June 2001 and May to June 2002) measured water properties in the eastern and central Aleutian Passes. Unimak, Akutan, Amukta, and Segu...
Published in: | Fisheries Oceanography |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2005
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-2419.2005.00373.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2005.00373.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2005.00373.x |
id |
crwiley:10.1111/j.1365-2419.2005.00373.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-2419.2005.00373.x 2024-06-02T07:58:51+00:00 Marine environment of the eastern and central Aleutian Islands LADD, CAROL HUNT, GEORGE L. MORDY, CALVIN W. SALO, SIGRID A. STABENO, PHYLLIS J. 2005 http://dx.doi.org/10.1111/j.1365-2419.2005.00373.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2005.00373.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2005.00373.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 14, issue s1, page 22-38 ISSN 1054-6006 1365-2419 journal-article 2005 crwiley https://doi.org/10.1111/j.1365-2419.2005.00373.x 2024-05-03T11:56:52Z Abstract To examine the marine habitat of the endangered western stock of the Steller's sea lion ( Eumetopias jubatus ), two interdisciplinary research cruises (June 2001 and May to June 2002) measured water properties in the eastern and central Aleutian Passes. Unimak, Akutan, Amukta, and Seguam Passes were sampled in both years, and three additional passes (Umnak, Samalga, and Tanaga) were sampled in 2002. In the North Pacific (and to a lesser extent in the Bering Sea), a strong front in water properties was observed near Samalga Pass in June of both years, with significantly warmer, fresher, and more nitrate‐poor water east of Samalga Pass than west of the pass. These water properties reflect differences in source waters (Alaska Coastal Current versus Alaskan Stream), mixing depth, and Bering Sea influence. Strong cross‐Aleutian gradients were also observed with warmer, fresher water on the North Pacific side of the archipelago. The nutrient content of the waters flowing through the passes, combined with the effects of mixing within the passes, influences the transport of nutrients into the Bering Sea. As water moves away from the strong mixing of the passes and becomes more stratified, phytoplankton can take advantage of the enhanced nutrient concentrations. Thus, the northern side of the Aleutian Islands (especially in the lee of the islands) appears to be more productive. Combined with evidence of coincident changes in many ecosystem parameters near Samalga Pass, it is hypothesized that Samalga Pass forms a physical and biogeographic boundary between the eastern and central Aleutian marine ecosystems. Article in Journal/Newspaper Archipelago Bering Sea Alaska Aleutian Islands Wiley Online Library Bering Sea Pacific Fisheries Oceanography 14 s1 22 38 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract To examine the marine habitat of the endangered western stock of the Steller's sea lion ( Eumetopias jubatus ), two interdisciplinary research cruises (June 2001 and May to June 2002) measured water properties in the eastern and central Aleutian Passes. Unimak, Akutan, Amukta, and Seguam Passes were sampled in both years, and three additional passes (Umnak, Samalga, and Tanaga) were sampled in 2002. In the North Pacific (and to a lesser extent in the Bering Sea), a strong front in water properties was observed near Samalga Pass in June of both years, with significantly warmer, fresher, and more nitrate‐poor water east of Samalga Pass than west of the pass. These water properties reflect differences in source waters (Alaska Coastal Current versus Alaskan Stream), mixing depth, and Bering Sea influence. Strong cross‐Aleutian gradients were also observed with warmer, fresher water on the North Pacific side of the archipelago. The nutrient content of the waters flowing through the passes, combined with the effects of mixing within the passes, influences the transport of nutrients into the Bering Sea. As water moves away from the strong mixing of the passes and becomes more stratified, phytoplankton can take advantage of the enhanced nutrient concentrations. Thus, the northern side of the Aleutian Islands (especially in the lee of the islands) appears to be more productive. Combined with evidence of coincident changes in many ecosystem parameters near Samalga Pass, it is hypothesized that Samalga Pass forms a physical and biogeographic boundary between the eastern and central Aleutian marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
LADD, CAROL HUNT, GEORGE L. MORDY, CALVIN W. SALO, SIGRID A. STABENO, PHYLLIS J. |
spellingShingle |
LADD, CAROL HUNT, GEORGE L. MORDY, CALVIN W. SALO, SIGRID A. STABENO, PHYLLIS J. Marine environment of the eastern and central Aleutian Islands |
author_facet |
LADD, CAROL HUNT, GEORGE L. MORDY, CALVIN W. SALO, SIGRID A. STABENO, PHYLLIS J. |
author_sort |
LADD, CAROL |
title |
Marine environment of the eastern and central Aleutian Islands |
title_short |
Marine environment of the eastern and central Aleutian Islands |
title_full |
Marine environment of the eastern and central Aleutian Islands |
title_fullStr |
Marine environment of the eastern and central Aleutian Islands |
title_full_unstemmed |
Marine environment of the eastern and central Aleutian Islands |
title_sort |
marine environment of the eastern and central aleutian islands |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1365-2419.2005.00373.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2419.2005.00373.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2419.2005.00373.x |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Archipelago Bering Sea Alaska Aleutian Islands |
genre_facet |
Archipelago Bering Sea Alaska Aleutian Islands |
op_source |
Fisheries Oceanography volume 14, issue s1, page 22-38 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2419.2005.00373.x |
container_title |
Fisheries Oceanography |
container_volume |
14 |
container_issue |
s1 |
container_start_page |
22 |
op_container_end_page |
38 |
_version_ |
1800742409690152960 |