Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank
Abstract In June of 1999, fishermen were allowed access to the southern section of Georges Bank Closed Area II in the North Atlantic to harvest the large biomass of sea scallops Placopecten magellanicus that had accumulated during a 5‐year multispecies fishing ban. Prior to the opening, managers con...
Published in: | North American Journal of Fisheries Management |
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Language: | English |
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Online Access: | http://dx.doi.org/10.1577/m04-111.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M04-111.1 |
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crwiley:10.1577/m04-111.1 2023-12-03T10:26:54+01:00 Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank Gedamke, Todd DuPaul, William D. Hoenig, John M. 2005 http://dx.doi.org/10.1577/m04-111.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M04-111.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Fisheries Management volume 25, issue 3, page 1122-1129 ISSN 0275-5947 1548-8675 Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2005 crwiley https://doi.org/10.1577/m04-111.1 2023-11-09T14:27:46Z Abstract In June of 1999, fishermen were allowed access to the southern section of Georges Bank Closed Area II in the North Atlantic to harvest the large biomass of sea scallops Placopecten magellanicus that had accumulated during a 5‐year multispecies fishing ban. Prior to the opening, managers conducted a fine‐scale survey of the area and a catch quota was established as a fixed percentage of the estimated biomass. The estimate of biomass was uncertain because it was based on estimates of dredge efficiency that ranged from 16% to 40%. Because survey stations were reoccupied at the end of the fishery and significant removals had occurred, it was possible to use the index‐removal method to obtain an estimate of gear efficiency. The estimate was 54% and ranged from 41% to 54% depending on model inputs. The 54% efficiency is believed to represent a maximal efficiency estimate. Article in Journal/Newspaper North Atlantic Wiley Online Library (via Crossref) North American Journal of Fisheries Management 25 3 1122 1129 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Gedamke, Todd DuPaul, William D. Hoenig, John M. Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
topic_facet |
Management, Monitoring, Policy and Law Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract In June of 1999, fishermen were allowed access to the southern section of Georges Bank Closed Area II in the North Atlantic to harvest the large biomass of sea scallops Placopecten magellanicus that had accumulated during a 5‐year multispecies fishing ban. Prior to the opening, managers conducted a fine‐scale survey of the area and a catch quota was established as a fixed percentage of the estimated biomass. The estimate of biomass was uncertain because it was based on estimates of dredge efficiency that ranged from 16% to 40%. Because survey stations were reoccupied at the end of the fishery and significant removals had occurred, it was possible to use the index‐removal method to obtain an estimate of gear efficiency. The estimate was 54% and ranged from 41% to 54% depending on model inputs. The 54% efficiency is believed to represent a maximal efficiency estimate. |
format |
Article in Journal/Newspaper |
author |
Gedamke, Todd DuPaul, William D. Hoenig, John M. |
author_facet |
Gedamke, Todd DuPaul, William D. Hoenig, John M. |
author_sort |
Gedamke, Todd |
title |
Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
title_short |
Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
title_full |
Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
title_fullStr |
Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
title_full_unstemmed |
Index‐Removal Estimates of Dredge Efficiency for Sea Scallops on Georges Bank |
title_sort |
index‐removal estimates of dredge efficiency for sea scallops on georges bank |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1577/m04-111.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/M04-111.1 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
North American Journal of Fisheries Management volume 25, issue 3, page 1122-1129 ISSN 0275-5947 1548-8675 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/m04-111.1 |
container_title |
North American Journal of Fisheries Management |
container_volume |
25 |
container_issue |
3 |
container_start_page |
1122 |
op_container_end_page |
1129 |
_version_ |
1784276380866838528 |