Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands
Hydrographic, acoustic and zooplankton data were collected during June 1992 and June 1995 along transects to the north and south of Kiska and Buldir Islands in the western Aleutian Islands to look for mesoscale relationships between zooplankton community composition, biomass, and associated frontal...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
1998
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/8j79j2nr |
id |
ftcdlib:oai:escholarship.org:ark:/13030/qt8j79j2nr |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org:ark:/13030/qt8j79j2nr 2023-06-18T03:40:01+02:00 Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands Coyle, KO Weingartner, TJ Hunt, GL 1998-01-01 application/pdf https://escholarship.org/uc/item/8j79j2nr unknown eScholarship, University of California qt8j79j2nr https://escholarship.org/uc/item/8j79j2nr CC-BY zooplankton acoustics water masses Aleutian Islands Oceanography Ecology Zoology Marine Biology & Hydrobiology article 1998 ftcdlib 2023-06-05T18:02:17Z Hydrographic, acoustic and zooplankton data were collected during June 1992 and June 1995 along transects to the north and south of Kiska and Buldir Islands in the western Aleutian Islands to look for mesoscale relationships between zooplankton community composition, biomass, and associated frontal systems and pycnoclines. Hydrographic data revealed a front dividing the Bering Sea water mass from the mixed regime in the passes and Alaska Stream water south of the islands. Chlorophyll concentration and ADB (acoustically determined biomass) were consistently higher on the Bering Sea side of the front in June 1992. Elevated ADB in the Bering Sea was due to aggregates of Neocalanus cristatus copepodid V in the pycnocline separating the upper mixed layer from the underlying cold intermediate layer. N. cristatus abundance was significantly higher (p < 0.05) in Bering Sea water in June 1992 than in Pacific water in June 1992 and Bering Sea water in June 1995. N. fleminger abundance was significantly higher in Bering Sea water than in Pacific water in both 1992 and 1995. N. plumchrus and Eucalanus bungil stages III and IV were more abundant in Pacific water than in Bering Sea water. The results clearly demonstrate the utility of interfacing acoustics, net samples and hydrographic data to elucidate mesoscale associations of zooplankton to fronts, water masses and pycnoclines. Article in Journal/Newspaper Bering Sea Alaska Aleutian Islands University of California: eScholarship Bering Sea Pacific Kiska ENVELOPE(155.830,155.830,50.258,50.258) |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
zooplankton acoustics water masses Aleutian Islands Oceanography Ecology Zoology Marine Biology & Hydrobiology |
spellingShingle |
zooplankton acoustics water masses Aleutian Islands Oceanography Ecology Zoology Marine Biology & Hydrobiology Coyle, KO Weingartner, TJ Hunt, GL Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
topic_facet |
zooplankton acoustics water masses Aleutian Islands Oceanography Ecology Zoology Marine Biology & Hydrobiology |
description |
Hydrographic, acoustic and zooplankton data were collected during June 1992 and June 1995 along transects to the north and south of Kiska and Buldir Islands in the western Aleutian Islands to look for mesoscale relationships between zooplankton community composition, biomass, and associated frontal systems and pycnoclines. Hydrographic data revealed a front dividing the Bering Sea water mass from the mixed regime in the passes and Alaska Stream water south of the islands. Chlorophyll concentration and ADB (acoustically determined biomass) were consistently higher on the Bering Sea side of the front in June 1992. Elevated ADB in the Bering Sea was due to aggregates of Neocalanus cristatus copepodid V in the pycnocline separating the upper mixed layer from the underlying cold intermediate layer. N. cristatus abundance was significantly higher (p < 0.05) in Bering Sea water in June 1992 than in Pacific water in June 1992 and Bering Sea water in June 1995. N. fleminger abundance was significantly higher in Bering Sea water than in Pacific water in both 1992 and 1995. N. plumchrus and Eucalanus bungil stages III and IV were more abundant in Pacific water than in Bering Sea water. The results clearly demonstrate the utility of interfacing acoustics, net samples and hydrographic data to elucidate mesoscale associations of zooplankton to fronts, water masses and pycnoclines. |
format |
Article in Journal/Newspaper |
author |
Coyle, KO Weingartner, TJ Hunt, GL |
author_facet |
Coyle, KO Weingartner, TJ Hunt, GL |
author_sort |
Coyle, KO |
title |
Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
title_short |
Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
title_full |
Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
title_fullStr |
Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
title_full_unstemmed |
Distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western Aleutian Islands |
title_sort |
distribution of acoustically determined biomass and major zooplankton taxa in the upper mixed layer relative to water masses in the western aleutian islands |
publisher |
eScholarship, University of California |
publishDate |
1998 |
url |
https://escholarship.org/uc/item/8j79j2nr |
long_lat |
ENVELOPE(155.830,155.830,50.258,50.258) |
geographic |
Bering Sea Pacific Kiska |
geographic_facet |
Bering Sea Pacific Kiska |
genre |
Bering Sea Alaska Aleutian Islands |
genre_facet |
Bering Sea Alaska Aleutian Islands |
op_relation |
qt8j79j2nr https://escholarship.org/uc/item/8j79j2nr |
op_rights |
CC-BY |
_version_ |
1769004810688790528 |