1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea
The distribution, size, length-specific weight, growth, and feeding of age-0 walleye pollock (Theragra chalcogramma) were examined along with their prey distribution patterns in two contrasting transects over a four-year period (1994-1997) in relation to biophysical properties of frontal regions aro...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.513.9840 http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.513.9840 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.513.9840 2023-05-15T15:43:22+02:00 1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea Richard D. Brodeur Matthew T. Wilson Lorenzo Ciannelli Miriam Doyle The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.513.9840 http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.513.9840 http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf Habitat Juvenile pollock Zooplankton Bering Sea Pribilof Islands text ftciteseerx 2016-01-08T09:47:13Z The distribution, size, length-specific weight, growth, and feeding of age-0 walleye pollock (Theragra chalcogramma) were examined along with their prey distribution patterns in two contrasting transects over a four-year period (1994-1997) in relation to biophysical properties of frontal regions around the Pribilof Islands, Bering Sea. There were significant interannual differences in catch of age-0 pollock, but transect and habitat differences (inshore vs. front vs. offshore) were not significant for either catch or size of pollock. There were significant variations in length-specific weight and growth of pollock, but the trends were inconsistent. Copepods dominated the zooplankton biomass in all habitats and years; there were no consistent differences in the densities of the dominant zooplankton taxa among the habitats. There were, however, strong habitat and transect differences in juvenile pollock diet, particularly for the larger and presumably rarer prey taxa (euphausiids, chaetognaths, fish). We did not find any evidence that occupying a particular habitat was beneficial to young pollock, although other factors (e.g. bioenergetic advantage and predation refuge) that we did not examine here could have been more variable and critical to pollock survival. In a physically dynamic system such as the Pribilof Islands, age-0 pollock may need to continuously search for optimal conditions of Text Bering Sea Theragra chalcogramma Copepods Unknown Bering Sea |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
topic |
Habitat Juvenile pollock Zooplankton Bering Sea Pribilof Islands |
spellingShingle |
Habitat Juvenile pollock Zooplankton Bering Sea Pribilof Islands Richard D. Brodeur Matthew T. Wilson Lorenzo Ciannelli Miriam Doyle 1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
topic_facet |
Habitat Juvenile pollock Zooplankton Bering Sea Pribilof Islands |
description |
The distribution, size, length-specific weight, growth, and feeding of age-0 walleye pollock (Theragra chalcogramma) were examined along with their prey distribution patterns in two contrasting transects over a four-year period (1994-1997) in relation to biophysical properties of frontal regions around the Pribilof Islands, Bering Sea. There were significant interannual differences in catch of age-0 pollock, but transect and habitat differences (inshore vs. front vs. offshore) were not significant for either catch or size of pollock. There were significant variations in length-specific weight and growth of pollock, but the trends were inconsistent. Copepods dominated the zooplankton biomass in all habitats and years; there were no consistent differences in the densities of the dominant zooplankton taxa among the habitats. There were, however, strong habitat and transect differences in juvenile pollock diet, particularly for the larger and presumably rarer prey taxa (euphausiids, chaetognaths, fish). We did not find any evidence that occupying a particular habitat was beneficial to young pollock, although other factors (e.g. bioenergetic advantage and predation refuge) that we did not examine here could have been more variable and critical to pollock survival. In a physically dynamic system such as the Pribilof Islands, age-0 pollock may need to continuously search for optimal conditions of |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Richard D. Brodeur Matthew T. Wilson Lorenzo Ciannelli Miriam Doyle |
author_facet |
Richard D. Brodeur Matthew T. Wilson Lorenzo Ciannelli Miriam Doyle |
author_sort |
Richard D. Brodeur |
title |
1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
title_short |
1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
title_full |
1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
title_fullStr |
1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
title_full_unstemmed |
1Interannual and Regional Variability in Distribution and Ecology of Juvenile Pollock and their Prey in Frontal Structures of the Bering Sea |
title_sort |
1interannual and regional variability in distribution and ecology of juvenile pollock and their prey in frontal structures of the bering sea |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.513.9840 http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Theragra chalcogramma Copepods |
genre_facet |
Bering Sea Theragra chalcogramma Copepods |
op_source |
http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.513.9840 http://www.pmel.noaa.gov/foci/sebscc/special_issue/manuscripts/brodeur_rev.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766377463925964800 |