Resultados de la búsqueda
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
Abstract: The depletion-corrected average catch (DCAC) formula is an extension of the potential ... -yield formula, and it provides useful estimates of sustainable yield for data-poor fisheries on long ... biomass. The size of the windfall is expressed as being equivalent to a number of years of sustainable ... production, in the form of a “windfall ratio”. The DCAC is calculated as the sum of catches divided by the ...
Meeting Document : WG-SAM-11/P3 : Autor(es): A.D. McCall
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REPORT ON THE ABANDONED GILLNET RETRIEVAL OPERATION CONDUCTED BY AUSTRALIA IN CCAMLR STATISTICAL DIVISION 58.4.3B (BANZARE BANK)
gillnets as a fishing method to target toothfish in the Convention area. Estimating the impact of IUU ... fishing is hampered by a lack of data on the design, deployment, catch and bycatch rates of gill nets ... (Statistical Division 58.4.3b), and the toothfish and bycatch found when a section of the gillnet was retrieved ... . Based on the amount of toothfish found in the 8 km long section of net retrieved, upwards of 29 tonnes ...
Meeting Document : TASO-09/10 : Autor(es): Snowdon, D., Hamill, J., McEachan, F., Welsford, D.
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What do we know about fish stocks in the Southern Scotia region? A review and prospects for future research
Abstract: Work on finfish in the southern Scotia Arc was restricted to taxonomy until the end of ... 1978/79. The fishery was lucrative for a few seasons only, and was closed in 1989/90. Stocks of finfish ... of mackerel ice fish and marbled notothenia, had recovered from exploitation by the end of the 1980’s ... /beginning of the 1990’s. Since the early 1990’s, most species appeared to have changed little in abundance ...
Meeting Document : WG-FSA-00/14 : Autor(es): K.-H. Kock (Germany) and C. Jones (USA)
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REVISED RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4A and B BY SHINSEI MARU NO. 3 IN 2009/10
status and biological characteristics of Dissostichus spp. in Division 58.4.4 a & b has been revised ... according to the recommendations of the working group. The working group recommended the consecutive ... research focusing on tagging program for a period of 3-5 years to estimate current stock size accurately ... division that includes 4 SSRUs, taking into account the conservative exploitation rate (less than 3.8 % of ...
Meeting Document : WG-FSA-09/12 : Autor(es): Delegation of Japan
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Broadbandwidth sound scattering and absorption from krill (Meganyctiphanes norvegica), Mysids (Praunus flexuousus and Neomysis integer) and shrimp (Crangon crangon)
Abstract: Sound scattering and absorption measurements were made of Northern krill ... (Meganyctiphanes norvegica) over the acoustical bandwidth of 30 to 210 kHz and compared to similar scattering ... measurements made of Antarctic krill (Euphausia superba; Demer and Conti, 2003a). The measurements of total ... total target strengths (TTS) of crustaceans with markedly different shapes (i.e. Mysidacea, a mix of ...
Meeting Document : WG-EMM-04/40 : Autor(es): S.G. Conti, D.A. Demer (USA) and A.S. Brierley (United Kingdom)
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Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
Abstract: In anticipation of the development of a new fishery for the oceanic squid Martialia ... hyadesi in the Scotia Sea a revision is presented of annual consumption of the species by higher predators ... and a brief review is provided of information about the life cycle and distribution obtained from ... 245,000 tonnes compared with an upper estimate of 550,000 tonnes if less reliable data are included. M ...
Meeting Document : WG-FSA-96/20 : Autor(es): Rodhouse, P.G.
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An integrated assessment model for Antarctic krill: progress update
Abstract: Estimates of population parameters from different configurations of an integrated model ... trawl data. The different configurations of the integrated model were varied based on whether acoustic ... weighted, by whether natural mortality was estimated by the model or pre-assigned a value of 0.8, and by ... whether a narrow or wide version of the age-length transition matrix was used. The biomass data calculated ...
Meeting Document : WG-EMM-12/27 : Autor(es): D. Kinzey, G. Watters and C. Reiss (USA)
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Fundamentos científicos de la propuesta conjunta de Nueva Zelandia y Estados Unidos para establecer un área marina protegida en la región del Mar de Ross
Region (RSR). A substantial amount of material has already been presented to the Scientific Committee ... and its working groups, and here we provide an abridged and annotated summary of that material. We ... organize our summary by linking spatial data to the specific protection and scientific objectives of the ... continental slope, the Balleny Islands and vicinity, and the northern RSR. A set of maps (provided in an ...
Meeting Document : SC-CAMLR-IM-I/08 : Autor(es): Delegations of the USA and New Zealand
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KRILL FISHERY REPORT: 2011 UPDATE
of which has been taken from Subarea 48.2 between February and May. Approximately 55% of the catch ... has been taken by two vessels using the continuous fishing system. The forecast total catch of krill ... and reported a total catch of 211974 t; three vessels used the continuous fishing system. For the ... first time, the catches of krill approached the apportioned limit for Subarea 48.1 (25% of the trigger ...
Meeting Document : WG-EMM-11/05 : Autor(es): Secretariat
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Developing the Secretariat’s data management systems
administrative work of the Commission and Scientific Committee. These systems are being redeveloped as part of a ... long-term program of work which started in 2013. The work has focused on the development of structural ... and data elements of the enterprise data model, data warehouse, quality assurance, reference data ... , data extracts and metadata, and the appraisal of candidate systems for automated loading of, and ...
Meeting Document : SC-CAMLR-XXXV/BG/25 Rev. 1 : Autor(es): CCAMLR Secretariat