Resultados de la búsqueda
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Preliminary trials to test mitigation measures aimed at reducing Macrourus spp. by-catch on autoliners targeting D. eleginoides with longlines in the CCAMLR Convention Area
significant. In order for the benefits of mackerel bait in reducing macrourid (and other species) bycatch to ... Abstract: Pilot studies were carried out in 48.3 in 2006 and in 88.1 and 88.2 in 2007 by the ... in catch rates of Macrourus spp due to bait was significant, but not for hook-type. Bait type had ... similar effects on the catch rates of Dissostchus spp. and of all other by-catch species combined. However ...
Meeting Document : WG-FSA-07/33 : Autor(es): R.E. Mitchell, D.J. Agnew, T. Carruthers, J. Clark, L. Ross (United Kingdom) and J. van Heerden (South Africa)
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Progress on the integrated stock assessment by CASAL for Antarctic toothfish Dissostichus mawsoni in Subarea 48.6
modeling of migration. Author(s): K. Sawada and T. Okuda Title: Progress on the integrated stock ... mawsoni at the research block 48.6_2, as a test run for integrated assessment model for stock assessment ... of D. mawsoni at Subarea 48.6. Our preliminary analysis is problematic as a stock assessment, but ... indicates future tasks for improvement: further sensitivity analysis of IUU, addition of ageing data and ...
Meeting Document : WG-FSA-2019/21 : Autor(es): K. Sawada and T. Okuda
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Biomass results from the International Synoptic Krill Survey in Area 48, 2019
Abstract: Results from the International Synoptic Krill Survey in Area 48, 2019, are presented ... ), and trawls (164) were carried out as per survey procedures developed in 2018, which were based on the ... methods and procedures used in the CCAMLR 2000 krill acoustic survey. Backscatter from krill were ... delineated using the ‘swarms’ method and integrated to produce distribution maps of krill areal density and ...
Meeting Document : SG-ASAM-2019/08 Rev. 1 : Autor(es): G. Macaulay, G. Skaret, T. Knutsen, O.A. Bergstad, B. Krafft, S. Fielding, S. Choi, S. Chung, K. Demianenko, V. Podhornyi, K. Vishnyakova, L. Pshenichnov, A. Chuklin, A. Shishman, X. Wang, X. Zhao and M. Cox
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A shore-based randomised sampling design used in the artisanal longline fishery for Dissostichus eleginoides off central Chile
-hour periods. Compared to shipboard sampling, the design allowed more flexibility in allocation of ... from targetted individuals caught in the artisanal longline fishery for Dissostichus eleginoides off ... -based randomised sampling design used in the artisanal longline fishery for Dissostichus eleginoides off ... used, divided into primary sampling units of days/area and secondary sampling units of three- and eight ...
Meeting Document : WG-FSA-96/54 : Autor(es): Rubilar, P., Ashford, J., Jones, C.
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REPORT ON AUSTRALIAN FISHING EFFORT AND SEABIRD BYCATCH IN FISHERIES OUTSIDE THE CONVENTION AREA
, and seabird bycatch mitigation measures in Australian fisheries outside the Convention Area. Mandatory ... observer data to fully assess each trawl fishery. As part of efforts to better assess seabird bycatch in ... in the largest Australian trawl fishery. Depending on the findings; the need for further assessments ... (Australia) Title: REPORT ON AUSTRALIAN FISHING EFFORT AND SEABIRD BYCATCH IN FISHERIES OUTSIDE THE ...
Meeting Document : WG-FSA-08/37 Rev. 1 : Autor(es): T. Hewitt and I. Hay (Australia)
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Barcoding and beyond: applications and developments for biodiversity evaluation in the Southern Ocean
Abstract: DNA barcoding is a valuable tool for biodiversity studies in the Southern Ocean. It can ... be combined with other types of systematics data (morphology, other sequence markers) to reassess the ... for fisheries, ecology or large scale biodiversity surveys. The rise of Next Generation Sequencing ... (NGS) techniques in the last 15 years has provided exciting new developments in classical barcoding ...
Meeting Document : WG-EMM-2019/54 : Autor(es): A. Dettai, G. Duhamel, C. Gallut, M. Eléaume and A. Martin
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LENGTH-BASED ASSESSMENT FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3
identification of cohorts from the survey model, given the differential age structures observed in the population ... distribution of the population from the survey data which, in conjunction with the bootstrapped survey biomass ... Abstract: The current assessment method for the mackerel icefish (Champsocephalus gunnari) in sub ... this issue of determining cohorts, using stratified bootstrap techniques to estimate the length ...
Meeting Document : WG-SAM-09/15 : Autor(es): R.M. Hillary, D.J. Agnew and R. Mitchell (United Kingdom)
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Penguins, fur seals, and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica
may have a significant effect on krill abundance, we estimated the energy and prey requirements of ... commercial krill fishery harvest m the South Shetland Island region (1.0 x 108 kg) was approximately 12% of ... , and may affect prey availability to penguins and fur seals. This differs from the conclusions of Ichii ... , and fishing: prey requirements and potential competition in the South Shetland Islands, Antarctica ...
Meeting Document : WG-EMM-99/57 : Autor(es): D.A. Croll and B.R. Tershy (USA)
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THE ANTARCTIC KRILL AND ECOSYSTEM SURVEY WITH R/V “G. O. SARS” IN 2008
purposes for the AKES project were to • evaluate the links between the krill resources and distribution in ... (Target strength; the ability of an organism to reflect sound) for krill and ice fish • study aggregations ... of krill, fish and plankton relative to the hydrography • compare aggregations and abundance of krill ... Abstract: This report describes the multipurpose AKES survey (Antarctic Krill and Ecosystem ...
Meeting Document : WG-EMM-08/28 : Autor(es): S.A. Iversen (Norway), W. Melle, E. Bagøien, D. Chu, B. Edvardsen, B. Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B. Krafft, S. Kaartvedt, P.B. Lona, S. Murray, L. Naustvoll, L. Nøttestad, M. Ostrowski, V. Siegel, Ø. Skagseth, G. Skaret, H. Søiland, X. Zhao and C.B. Årnes
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Tests for anomalous years in the CCAMLR index series (draft)
Abstract: The properties of a method for detecting anomalous years in CCAMLR index series are ... obtained on the assumption that the series being considered consists of random values from a constant ... from a wide range of distributions. Some examples are given to illustrate the performance of the ... anomalous years in the CCAMLR index series (draft) Approval: Approved ...
Meeting Document : WG-EMM-Stats-97/06 : Autor(es): MacKenzie, D., Manly, B.F.