Résultats de la recherche
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Proposal to continue the time series of CCAMLR-sponsored research surveys to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea in 2015
be retained at a total of 60 sets. A nominal catch limit of 68 tonnes, to be taken from the shelf ... Bay. Survey timing and methods will remain the same as in previous years, and the number of sets will ... . Parker and S. Mormede (New Zealand) Title: Proposal to continue the time series of CCAMLR-sponsored ... research surveys to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea in 2015 ...
Meeting Document : WG-SAM-14/25 : Auteur(s): S.M. Hanchet, S.J. Parker and S. Mormede (New Zealand)
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An acoustic estimation of krill densities to the north of South Georgia in January 1994
the northern coast of South Georgia from RRS lames Clark Ross during January 1994. Difference in ... krill densities from 120 kHz signals attributed krill. At less than 1 g m-2, mean weighted krill ... provide further evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s ... ): Watkins, J.L., Brierley, A.S. Title: An acoustic estimation of krill densities to the north of South ...
Meeting Document : WG-EMM-95/74 : Auteur(s): Watkins, J.L., Brierley, A.S.
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Sexual ratio of Dissostichus eleginoides from longlines samples: a partial indicator of reproductive migration in Subarea 48.3
males at size of first maturity join the female population. After the first week of June, the sex ratio ... Abstract: The examination of the sexual ratio of D. eleginoides between the first week of March ... and the third week of July 1996, in the subarea 48.3 shows that the sex ratio departs from the ... turns back to a higher number of females. Because the longline remains most of the time close to the ...
Meeting Document : WG-FSA-96/44 : Auteur(s): Moreno, C.A., Guerra, J., Zuleta, A.
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Choice of a procedure for deciding closure of CCAMLR fisheries: a simulation model
Secretariat of CCAMLR, as described in Conservation Measures, have been difficult to implement because of the ... histories are simulated and the performance of four Models for making closure decisions is investigated ... under a variety of circumstances. The Model described in the existing Conservation Measures is shown to ... have a high probability of allowing large over- or under-shoots of the TAC. The most successful model ...
Meeting Document : CCAMLR-X/BG/09 : Auteur(s): Secretariat
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Estimation of toothfish distribution and population size in Subarea 88.3 by results of research longline fishing in 2011–2012
set at a depth from 625 to 2336 m. Total number of set hooks amounted 171096. In 2011 research fishing ... . Collected from research fishing data contributes to the achievement of the main objectives of research- make ... estimation of toothfish quantity, as well as expand the knowledge about toothfish`s and by-catch species ... V.V. Akishin (Russia) Title: Estimation of toothfish distribution and population size in Subarea 88.3 ...
Meeting Document : WG-SAM-12/20 : Auteur(s): V.A. Tatarnikov, I.G. Istomin and V.V. Akishin (Russia)
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Results of a CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2013
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... first survey was completed in February (Hanchet al. 2012a). In this paper we provide the results of the ... second survey in the time series. The objectives of this second survey were: To carry out a longline ... standardised manner; and To sample additional experimental stations in adjacent areas to identify areas of high ...
Meeting Document : WG-SAM-13/32 : Auteur(s): S.J. Parker, S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and R. Sarralde (Spain)
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Estimating prey consumption of the non-breeder component of an Adélie penguin population
recorded at the breeding colonies. However, recent work suggests that the size of the non-breeder component ... Abstract: Estimating the consumption of prey by higher-order predators is a priority for WG-EMM ... Southern Ocean. Previous assessments of prey consumption for seabirds have focussed on breeders using data ... of an Adélie penguin population can be substantial compared with the size of the breeder population ...
Meeting Document : WG-EMM-17/12 : Auteur(s): L. Emmerson and C. Southwell
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A brief review of information relevant to the establishment of a Krill Research Zone within the proposed Ross Sea Region Marine Protected Area
Abstract: At the close of the Commission for the Conservation of Antarctic Marine Living ... Region Marine Protected Area (RSRMPA) that included the addition of a Krill Research Zone (KRZ). A ... central aim of the proposed KRZ is to enhance research opportunities within the RSRMPA. To provide a ... , focusing primarily on krill and krill-dependent predators. Here we provide a summary of that review, which ...
Meeting Document : WG-EMM-16/49 : Auteur(s): E.S. Klein and G.M. Watters
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A review of tag-based stock assessments of the Antarctic toothfish Dissostichus mawsoni in Subarea 48.4
rate population abundance, and the mis-identification of species at release. This paper presents a ... Abstract: The stock abundance of Antarctic toothfish in Subarea 48.4 is estimated using tag based ... the Petersen estimation method to the use of the Chapman bias corrected estimator; a correction ... specifically developed to reduce estimation bias in populations with low recaptures, a feature typical of the ...
Meeting Document : WG-FSA-15/44 : Auteur(s): N. Walker, M. Soeffker, V. Laptikhovsky and T. Earl (United Kingdom)
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Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in June 2005
growth parameters, including the use of a length-at-age vector, (iii) consideration of a vulnerability ... Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides,was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ...
Meeting Document : WG-FSA-05/30 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)