Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean
Abstract.—Preservation of ecosystem structure is the guiding principle by which the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) endeavors to manage the harvests of living resources of the Southern Ocean (with the notable exception of marine mammals). The experiences...
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1681
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.765 http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.596.765 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.596.765 2023-05-15T13:58:49+02:00 Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean Roger P. Hewitt Christopher D. Jones Inigo Everson The Pennsylvania State University CiteSeerX Archives 1681 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.765 http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.765 http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf text 1681 ftciteseerx 2016-01-08T13:46:19Z Abstract.—Preservation of ecosystem structure is the guiding principle by which the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) endeavors to manage the harvests of living resources of the Southern Ocean (with the notable exception of marine mammals). The experiences of CCAMLR with regard to fisheries on Antarctic krill Euphausia superba, mackerel icefish Champhsocephalus gunnari and Patagonian toothfish Dissostichus eleginoides are reviewed. The unifying paradigm employed by CCAMLR is the application of a precautionary approach, which explicitly incorporates uncertainty in the analysis of risk of exceeding defined management criteria. Each fishery, however, presents a unique set of circumstances and unresolved concerns. While the current fishery for krill is small compared to the precautionary limit established by CCAMLR, fishing effort concentrated near colonies of land-breeding krill predators may pose a threat in addition to those posed by the broader-scale influence of climatic cycles and trends on krill production. Management of the fishery on mackerel icefish relies on frequent surveys and short-term population projections because of high variability in natural mortality and is further complicated by the dual role of icefish as both consumers of krill and alternative prey to krill predators. While CCAMLR management of the fishery on toothfish is based on longer-term projections and has demonstrated success in addressing incidental mortality of seabirds, large-scale misreporting of catches, particularly in the Indian Ocean sector, threatens to compromise the viability of the fishery. These concerns are discussed in the context of CCAMLR’s long-term goal of feed-back management schemes, whereby conservation measures are adjusted in response to ecosystem monitoring. Text Antarc* Antarctic Antarctic Krill Euphausia superba Icefish Patagonian Toothfish Southern Ocean Unknown Antarctic Indian Southern Ocean |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
Abstract.—Preservation of ecosystem structure is the guiding principle by which the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) endeavors to manage the harvests of living resources of the Southern Ocean (with the notable exception of marine mammals). The experiences of CCAMLR with regard to fisheries on Antarctic krill Euphausia superba, mackerel icefish Champhsocephalus gunnari and Patagonian toothfish Dissostichus eleginoides are reviewed. The unifying paradigm employed by CCAMLR is the application of a precautionary approach, which explicitly incorporates uncertainty in the analysis of risk of exceeding defined management criteria. Each fishery, however, presents a unique set of circumstances and unresolved concerns. While the current fishery for krill is small compared to the precautionary limit established by CCAMLR, fishing effort concentrated near colonies of land-breeding krill predators may pose a threat in addition to those posed by the broader-scale influence of climatic cycles and trends on krill production. Management of the fishery on mackerel icefish relies on frequent surveys and short-term population projections because of high variability in natural mortality and is further complicated by the dual role of icefish as both consumers of krill and alternative prey to krill predators. While CCAMLR management of the fishery on toothfish is based on longer-term projections and has demonstrated success in addressing incidental mortality of seabirds, large-scale misreporting of catches, particularly in the Indian Ocean sector, threatens to compromise the viability of the fishery. These concerns are discussed in the context of CCAMLR’s long-term goal of feed-back management schemes, whereby conservation measures are adjusted in response to ecosystem monitoring. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Roger P. Hewitt Christopher D. Jones Inigo Everson |
spellingShingle |
Roger P. Hewitt Christopher D. Jones Inigo Everson Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
author_facet |
Roger P. Hewitt Christopher D. Jones Inigo Everson |
author_sort |
Roger P. Hewitt |
title |
Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
title_short |
Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
title_full |
Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
title_fullStr |
Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
title_full_unstemmed |
Reconciling Fisheries with Conservation: Three Examples from the Southern Ocean |
title_sort |
reconciling fisheries with conservation: three examples from the southern ocean |
publishDate |
1681 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.765 http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Icefish Patagonian Toothfish Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Icefish Patagonian Toothfish Southern Ocean |
op_source |
http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.596.765 http://swfsc.noaa.gov/uploadedFiles/Divisions/AERD/Publications/Hewitt et al., 2008.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766267180138102784 |