Resultados de la búsqueda
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Size selectivity of the RMT8 plankton net and a commercial trawl for Antarctic krill
study on krill damaged during trawling operations indicates an effect of trawling duration and total ... has been studied. Selection curves indicate that krill length classes smaller 20 mm are ... underrepresented in the RMT8. For the commercial trawl with a liner mesh size of 12mm the length classes smaller 35 ... and 45 mm are undersampled, probably depending on the size composition of the catch. A preliminary ...
Meeting Document : WG-EMM-07/28 : Autor(es): V. Siegel (Germany)
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
Abstract: This study used an operating model to simulate a Dissostichus eleginoides population in ... impact on the numbers of tagged fish recaptures and accuracy of tag-based estimates using the Chapman ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ... minimum numbers of recaptures are required to ensure a low likelihood of biomass overestimation. For ...
Meeting Document : WG-SAM-17/13 : Autor(es): L. Robinson, P. Burch and K. Reid
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Analysis of observer coverage for Japanese krill fishing vessels
had the largest impacts, and year coverage had moderate impacts on CV for both mean krill length and ... explore proper allocation of scientific observers on Japanese krill fishing vessels using the data from ... 1995 to 2008. Based on the multistage sampling theory, we derived the equation of variance in four ... bycatch. Fish bycatch required moderate coverage for haul but low improvement were made by increasing ...
Meeting Document : WG-SAM-10/17 : Autor(es): T. Okuda, M. Kiyota and H. Okamura (Japan)
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Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob and Lena Banks
highest for models on the assumption of 22% of total IUU catch and lowest for models with assumption of no ... were set as follows: parameters for ALK (k, Linf and t0) were fixed; year class strength (YCS) was ... Abstract: I made six sensitive runs of CASAL models (LENGTH/AGE_IUU_MODEL) for stock status ... during the latest WG-SAM meeting. The six models with three kinds of assumptions on IUU catch were ...
Meeting Document : WG-FSA-14/23 : Autor(es): K. Taki (Japan)
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OPTIONS FOR USING UNREPLICATED ECOSYSTEM MONITORING DATA TO DETECT IMPACTS
an important challenge. Potential strategies are likely to consist of a method for inferring impacts ... interventions based on subtle indications of an impact. Our example impact was characterised by an increase in ... control sites. Identifying how these data could be used in an ecosystem management strategy is therefore ... and a schedule of tactical interventions in response to these impacts (e.g. restrictions on fishing ...
Meeting Document : WG-EMM-09/26 : Autor(es): S. Hill, J. Forcada, P. Trathan and C. Waluda (United Kingdom)
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The Antarctic toothfish: how common a prey for Weddell seals?
common (as evidenced by more than 30 years of sustained research projects on that toothfish population ... Abstract: Reported herein are observations of Weddell seals (Leptonychotes weddellii) feeding on ... the quantity of toothfish captured lead us to suggest that this species is a significant prey item for ... ). Author(s): P.J. Ponganis and T.K. Stockard (USA) Title: The Antarctic toothfish: how common a prey for ...
Meeting Document : WG-EMM-07/P4 : Autor(es): P.J. Ponganis and T.K. Stockard (USA)
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Estimating the biodiversity of the sub-Antarctic Indian part for the ecoregionalisation of CCAMLR areas 58.5.1 and 58.6: Part II. foraging habitats of top predators from French Antarctic Territories – areas of ecological significance in the Southern Ocean
identify area of importance for conservation in the Southern Ocean. The preliminary results on locations ... Abstract: Preliminary analysis of long term dataset on individual tracking of 19 species of ... data show that top predators are largely distributed on the southern part of the Indian Ocean from the ... Ocean Tuna Commission-IOTC, Commission for the Conservation of Southern Bluefin Tuna-CCSBT, Southern ...
Meeting Document : WS-MPA-11/08 : Autor(es): K. Delord, C. Bost, C. Guinet and H. Weimerskirch (France)
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Draft revised Management Plan for ASMA No. 1: Admiralty Bay, King George Island, South Shetland Islands
Abstract: Brazil is coordinating the implementation of the review of the Management Plan for the ... on those aspect of the management plan relevant to living marine resources following the procedures ... described in ATCM Decision 9 (2005). In particular the advice of CCAMLR is requested on the proposal that in ... shall be submitted to CCAMLR for its consideration and that commercial harvesting specified in such a ...
Meeting Document : WG-EMM-13/05 : Autor(es): J. Leal Madruga (Submitted by Brazil on behalf of the ASMA No. 1 Management Group – Brazil, Ecuador, Peru and Poland)
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Revision of Conservation Measure 91-01 (2000), Annex 91-01/A ‘Information to be included in Management Plans for CEMP sites’
). These guidelines provided an excellent framework for map production and were used as a starting point ... Abstract: At the 2003 meeting of the Commission, the Terms of Reference (TOR) for the Advisory ... Subgroup on Protected Areas were endorsed by the Commission (CCAMLR XXII (paragraph 4.26). One task, which ... , as appropriate, guidelines for the production of maps of protected areas relevant to CCAMLR”. The ...
Meeting Document : WG-EMM-04/19 : Autor(es): Chair, Subgroup on Protected Areas
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RESEARCH PLAN FOR TOOTHFISH BY SHINSEI MARU NO. 3 IN 2008/09
first year survey, important information, including information on distribution of toothfish, size ... consider possibility of re-opening the area for new and/or exploratory fishery. Therefore, it is essential ... to continue the scientific research to accumulate scientific information on toothfish in this area ... contribute to the future study on the distribution and population structure of Dissostichus spp. Author(s ...
Meeting Document : WG-FSA-08/39 : Autor(es): Delegation of Japan