HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago?
The marbled notothenia (Notothenia rossii) was the first species targeted by commercial fishing in the Southern Ocean. The species has been heavily fished around South Georgia and Iles Kerguelen in the first half of the 1970’s and at Elephant Island in 1979/80. The closure of the fishery for this sp...
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ftopenagrar:oai:www.openagrar.de:timport_mods_00004593 2023-05-15T13:56:19+02:00 HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? Kock, Karl-Hermann Jones, Christopher D. 2012 https://www.openagrar.de/receive/timport_mods_00004593 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00004593/dn051167.pdf eng eng https://www.openagrar.de/receive/timport_mods_00004593 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00004593/dn051167.pdf only signed in user info:eu-repo/semantics/openAccess Text book Text 2012 ftopenagrar 2022-05-01T23:08:24Z The marbled notothenia (Notothenia rossii) was the first species targeted by commercial fishing in the Southern Ocean. The species has been heavily fished around South Georgia and Iles Kerguelen in the first half of the 1970’s and at Elephant Island in 1979/80. The closure of the fishery for this species was one of the first conservation measures the ‘Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)’ adopted in 1985. Fish biomass within a CCAMLR Subarea or Division or part of it, is commonly estimated by targeting a number of species including N. rossii simultaneously in the same survey. Surveys are conducted under the assumption that the target fish species are more or less evenly distributed over the area at the time of the survey. This assumption is violated in the case of N. rossii which shows an extremely skewed abundance in that a large proportion of the population tends to aggregate in small areas while most of the area of distribution is only thinly populated. In order to provide more accurate estimates we suggest modification to the way the survey is designed Book Antarc* Antarctic Elephant Island Notothenia rossii South Shetland Islands Southern Ocean OpenAgrar (OA) Antarctic Southern Ocean Kerguelen South Shetland Islands Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) |
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English |
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Text Kock, Karl-Hermann Jones, Christopher D. HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
topic_facet |
Text |
description |
The marbled notothenia (Notothenia rossii) was the first species targeted by commercial fishing in the Southern Ocean. The species has been heavily fished around South Georgia and Iles Kerguelen in the first half of the 1970’s and at Elephant Island in 1979/80. The closure of the fishery for this species was one of the first conservation measures the ‘Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)’ adopted in 1985. Fish biomass within a CCAMLR Subarea or Division or part of it, is commonly estimated by targeting a number of species including N. rossii simultaneously in the same survey. Surveys are conducted under the assumption that the target fish species are more or less evenly distributed over the area at the time of the survey. This assumption is violated in the case of N. rossii which shows an extremely skewed abundance in that a large proportion of the population tends to aggregate in small areas while most of the area of distribution is only thinly populated. In order to provide more accurate estimates we suggest modification to the way the survey is designed |
format |
Book |
author |
Kock, Karl-Hermann Jones, Christopher D. |
author_facet |
Kock, Karl-Hermann Jones, Christopher D. |
author_sort |
Kock, Karl-Hermann |
title |
HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
title_short |
HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
title_full |
HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
title_fullStr |
HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
title_full_unstemmed |
HasNotothenia rossiiaround Elephant Island and the lower South Shetland Islands (Subarea 48.1) recovered from exploitation some 30 years ago? |
title_sort |
hasnotothenia rossiiaround elephant island and the lower south shetland islands (subarea 48.1) recovered from exploitation some 30 years ago? |
publishDate |
2012 |
url |
https://www.openagrar.de/receive/timport_mods_00004593 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00004593/dn051167.pdf |
long_lat |
ENVELOPE(-55.184,-55.184,-61.085,-61.085) |
geographic |
Antarctic Southern Ocean Kerguelen South Shetland Islands Elephant Island |
geographic_facet |
Antarctic Southern Ocean Kerguelen South Shetland Islands Elephant Island |
genre |
Antarc* Antarctic Elephant Island Notothenia rossii South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Elephant Island Notothenia rossii South Shetland Islands Southern Ocean |
op_relation |
https://www.openagrar.de/receive/timport_mods_00004593 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00004593/dn051167.pdf |
op_rights |
only signed in user info:eu-repo/semantics/openAccess |
_version_ |
1766263757562970112 |