Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea
Groundfish fisheries in the southeast Bering Sea in Alaska have been constrained in recent years by management measures to protect the endangered Steller sea lion (Eumetopias jubatus). There is concern that the present commercial harvest may produce a localized depletion of groundfish that would aff...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | http://aquaticcommons.org/8835/ http://fishbull.noaa.gov/1063/conners.pdf http://aquaticcommons.org/8835/1/conners_Fish_Bull_2008.pdf |
id |
ftaquaticcommons:oai:generic.eprints.org:8835 |
---|---|
record_format |
openpolar |
spelling |
ftaquaticcommons:oai:generic.eprints.org:8835 2023-05-15T15:43:20+02:00 Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea Conners, M. Elizabeth Munro, Peter 2008 application/pdf http://aquaticcommons.org/8835/ http://fishbull.noaa.gov/1063/conners.pdf http://aquaticcommons.org/8835/1/conners_Fish_Bull_2008.pdf en eng http://aquaticcommons.org/8835/1/conners_Fish_Bull_2008.pdf Conners, M. Elizabeth and Munro, Peter (2008) Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea. Fishery Bulletin, 106(3), pp. 281-292. Biology Ecology Fisheries Article PeerReviewed 2008 ftaquaticcommons 2020-08-30T00:02:50Z Groundfish fisheries in the southeast Bering Sea in Alaska have been constrained in recent years by management measures to protect the endangered Steller sea lion (Eumetopias jubatus). There is concern that the present commercial harvest may produce a localized depletion of groundfish that would affect the foraging success of Steller sea lions or other predators. A three-year field experiment was conducted to determine whether an intensive trawl fishery in the southeast Bering Sea created a localized depletion in the abundance of Pacific cod (Gadus macrocephalus). This experiment produced strongly negative results; no difference was found in the rate of seasonal change in Pacific cod abundance between stations within a regulatory no-trawl zone and stations in an immediately adjacent trawled area. Corollary studies showed that Pacific cod in the study area were highly mobile and indicated that the geographic scale of Pacific cod movement was larger than the spatial scale used as the basis for current no-trawl zones. The idea of localized depletion is strongly dependent on assumed spatial and temporal scales and contains an implicit assumption that there is a closed local population. The scale of movement of target organisms is critical in determining regional effects of fishery removals. Article in Journal/Newspaper Bering Sea Alaska International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons Bering Sea Pacific |
institution |
Open Polar |
collection |
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
op_collection_id |
ftaquaticcommons |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Conners, M. Elizabeth Munro, Peter Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
topic_facet |
Biology Ecology Fisheries |
description |
Groundfish fisheries in the southeast Bering Sea in Alaska have been constrained in recent years by management measures to protect the endangered Steller sea lion (Eumetopias jubatus). There is concern that the present commercial harvest may produce a localized depletion of groundfish that would affect the foraging success of Steller sea lions or other predators. A three-year field experiment was conducted to determine whether an intensive trawl fishery in the southeast Bering Sea created a localized depletion in the abundance of Pacific cod (Gadus macrocephalus). This experiment produced strongly negative results; no difference was found in the rate of seasonal change in Pacific cod abundance between stations within a regulatory no-trawl zone and stations in an immediately adjacent trawled area. Corollary studies showed that Pacific cod in the study area were highly mobile and indicated that the geographic scale of Pacific cod movement was larger than the spatial scale used as the basis for current no-trawl zones. The idea of localized depletion is strongly dependent on assumed spatial and temporal scales and contains an implicit assumption that there is a closed local population. The scale of movement of target organisms is critical in determining regional effects of fishery removals. |
format |
Article in Journal/Newspaper |
author |
Conners, M. Elizabeth Munro, Peter |
author_facet |
Conners, M. Elizabeth Munro, Peter |
author_sort |
Conners, M. Elizabeth |
title |
Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
title_short |
Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
title_full |
Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
title_fullStr |
Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
title_full_unstemmed |
Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea |
title_sort |
effects of commercial fishing on local abundance of pacific cod (gadus macrocephalus) in the bering sea |
publishDate |
2008 |
url |
http://aquaticcommons.org/8835/ http://fishbull.noaa.gov/1063/conners.pdf http://aquaticcommons.org/8835/1/conners_Fish_Bull_2008.pdf |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Bering Sea Alaska |
genre_facet |
Bering Sea Alaska |
op_relation |
http://aquaticcommons.org/8835/1/conners_Fish_Bull_2008.pdf Conners, M. Elizabeth and Munro, Peter (2008) Effects of commercial fishing on local abundance of Pacific cod (Gadus macrocephalus) in the Bering Sea. Fishery Bulletin, 106(3), pp. 281-292. |
_version_ |
1766377409866629120 |