Search results
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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 : Author(s): A.D. McCall
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KRILL FISHERY REPORT: 2008 UPDATE
for krill in Area 48 in the 2007/08 season, and these vessels have taken 84110 t of krill to date. The ... preliminary estimate of the total catch of krill for the season is approximately 108343 t. This compares with ... 104586 t of krill reported in the STATLANT data for 2006/07. With the exception of Poland, all ... Contracting Parties have submitted complete sets of haul-by-haul data for 2006/07. The report includes ...
Meeting Document : WG-EMM-08/05 : Author(s): Secretariat
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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 : Author(s): K.-H. Kock (Germany) and C. Jones (USA)
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Proposal for a Climate Change Response Work Program for CCAMLR
Terms of Reference of the Intersessional Correspondence Group (ICG) to develop approaches for ... integrating considerations of the impacts of climate change into the work of CCAMLR (components of TORs 7 and ... 8). It aims to build on related work of the Commission, SC-CAMLR and its working groups, and to link ... that the objective of a Climate Change Response Work Program is: To provide a mechanism for identifying ...
Meeting Document : CCAMLR-XXXVI/20 : Author(s): Delegations of Australia and Norway on behalf the Climate Change Intersessional Correspondence Group
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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 : Author(s): D. Kinzey, G. Watters and C. Reiss (USA)
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Uncertainty in standard sphere calibrations
Abstract: In fisheries acoustics, the standard sphere method of echosounder calibration is most ... method, a series of experiments were conducted in a deep tank (Demer and Hewitt, 1993). Results indicated ... that variations in pulse length (0.1 and 0.3 ms), water temperature (0.5 to 5.5 C), and choice of ... variations in the system gains of 0.3, 0.2 and 1.5 dB, respectively. Additionally, system gain values ...
Meeting Document : WG-EMM-95/70 : Author(s): Demer, D.A., Hewitt, R.P.
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A proposal for a CCAMLR vessel monitoring system
Abstract: A draft configuration of the CCAMLR Vessel Monitoring System (VMS) was prepared using ... available expertise in the design and implementation of satellite-based vessel monitoring of several CCAMLR ... Members and of the Forum Fisheries Agency. Technical consultation on VMS development, set-up and operation ... , available onboard equipment and its use, and transmission and processing of position reports was provided by ...
Meeting Document : CCAMLR-XIV/14 : Author(s): Secretariat
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Domain 1 Marine Protected Area Preliminary Proposal PART A-1: Priority Areas for Conservation
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... display of a large amount of information, not only contributing to the best science available but also ... providing a platform for the sharing and visualization of information, highlighting the multinational ... approach in all stages of the decision making process. In particular, this paper describes the ...
Meeting Document : SC-CAMLR-XXXVI/17 : Author(s): Delegations of Argentina and Chile
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Krill distribution pattern due to water structure and dynamics near the South Sandwich Islands in January–February 2000 (Krill Synoptic Survey 2000)
: waters of Antarctic Circumpolar Current, Weddell Sea and Secondary Frontal zone of Weddell Gyre. The ... schematic maps of geostrophic waters circulation are made. The joint analysis of environment parameters and ... length frequency, maturity stages and waters inhabited. Distribution of the 1st krill group (juveniles 25 ... -29 mm) well corresponds to meanders of Weddell Current to West of archipelago and distribution of the ...
Meeting Document : WG-EMM-00/33 : Author(s): V. Sushin, P. Chernyshkov, V. Shnar, F. Litvinov and K. Shulgovskiy (Russia)
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Antarctic's pelagic ecosystem: how environmental change will affect Salpidae population structure
vulnerable region of Western Antarctic. The relatively simple food web of this area relies on krill ... - Euphausia superba. Presumably as a result of climatic fluctuations, a decrease in the numbers of this ... crustacean has been recorded, followed by an increase in the population of the gelatinous zooplankter Salpa ... the summer season of 2010. It has been found that the horizontal distribution of this gelatinous ...
Meeting Document : WG-EMM-15/P08 : Author(s): A.W. Słomska, A.A. Panasiuk-Chodnicka, M.I. Żmijewska and M.K. Mańko (Poland)