Resultados de la búsqueda
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Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
vulnerable marine ecosystems (VMEs). We describe a spatially explicit production model that can be used to ... investigate a range of simple scenarios for simulating the effect and management of benthic impacts from ... longline fishing effort. Simulations were carried out under a range of productivity assumptions, impact ... simulated considered a range of areal closure radii and bycatch trigger thresholds. We conclude that ...
Meeting Document : WG-SAM-10/19 : Autor(es): A. Dunn, S.J. Parker and S. Mormede (New Zealand)
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The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012
. A codend liner, usually in place for the entire survey, was used only in the icefish strata, Gunnari ... Ridge, Plateau Southeast and Plateau West, and in a repeat of the hauls in Ground B. Catches in this ... those of 2011 and about one and a half times higher than the long-term average. Champsocephalus gunnari ... Lepidonotothen squamifrons was four times higher than the average. A slightly higher than average weight of ...
Meeting Document : WG-FSA-12/25 : Autor(es): G.B. Nowara and T. Lamb (Australia)
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An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
Abstract: A calibrated 120 kHz single-beam echo-sounder was integrated into an ocean glider and ... the distribution of Antarctic krill (Euphausia superba). During the glider missions, a research vessel ... undertook acoustic transects using a calibrated, hull-mounted, multi-frequency echo-sounder. Net hauls were ... a thresholded schools analysis technique (SHAPES), and acoustic data were converted to krill density ...
Meeting Document : WG-EMM-14/P02 : Autor(es): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
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Revised stock assessment of the Patagonian toothfish, Dissostichus eleginoides, in research block C of Division 58.4.4 (Ob & Lena Banks) using CASAL
, Shinsei maru No. 3, has conducted research fishing in accordance with a research plan submitted under CM ... order to participate in the tagging program and achieve a robust stock assessment. A preliminary ... assessment of stock status of D. eleginoides in SSRU C was made by Japan using a CASAL catch-at-length model ... posterior trace. The results seem to be not yet reliable and model not yet robust to use it as a management ...
Meeting Document : WG-FSA-14/06 : Autor(es): A. Rélot-Stirnemann (France)
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Research plan for the exploratory longline fishery for Dissostichus spp. in 2015/16 in Division 58.4.4
, Shinsei maru No. 3, had conducted research fishing in accordance with a research plan submitted under CM ... its intention to achieve a robust stock assessment that would provide advice on a catch limit ... according to CCAMLR decision rules. This paper aims to present a research plan for 2015/2016 that takes into ... estimated during WG-FSA 2014 using a CASAL model constructed for D. eleginoides. The vulnerable biomass was ...
Meeting Document : WG-FSA-15/67 : Autor(es): A. Rélot-Stirnemann (France)
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Acoustic data for the 1994 Krill Flux Workshop
Abstract: A methodology is described which when applied to data from an acoustic survey will ... with the specifications given in wg-krill-93 Appendix D. A program written to calculate such sections ... is also described and example output displayed. A similar program calculates current speeds normal to ... a section given an oceanographic dataset of current direction and speed. The two programs produce ...
Meeting Document : WS-Flux-94/04 : Autor(es): Secretariat
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An illustrative management procedure for exploring dynamic feedback in krill catch limit allocations among small-scale management units
Abstract: A Management Procedure (MP) approach is proposed to assist in advising regarding the ... which simulates the “true” dynamics of the resource with tests across a wide range of scenarios for the ... here have a feedback structure, and hence are able to react and self-correct. It is important, as with ... dynamics. A MP module separate from the operating model contains the methods and rules that are used to ...
Meeting Document : WG-EMM-06/28 : Autor(es): É. Plagányi and D. Butterworth (South Africa)
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Draft Revised Management Plan for ASPA 149, Cape Shirreff and San Telmo Island, Livingston Island, South Shetland Islands
Abstract: A draft revised Management Plan for ASPA 149 is being considered through an ... intersessional contact group formed during the 2004 meeting of the CEP/ATCM. Since a marine area is included in ... the plan, approval is required by CCAMLR. It should be noted that this area is also a CEMP site ... Management Plans for Antarctic Specially Protected Areas. In preparing the draft plan, a detailed assessment ...
Meeting Document : WG-EMM-04/8 : Autor(es): Delegations of Chile and USA
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophrys and D. chrysostoma at Campbell Island, New Zealand, 1942–96
-browed Albatross numbers went into a steep decline in the 1970s and, since at least 1984, have been ... % and 4.8% per annum at different colonies. A demographic study carried out between 1984 and 1996 ... and 0.953, respectively). Black-browed Albatrosses breed for the first time at a younger average age ... than do Grey-headed Albatrosses (10 years and 13.5 years, respectively), have a higher average breeding ...
Meeting Document : WG-FSA-04/58 : Autor(es): S.M. Waugh (New Zealand), H. Weimerskirch (France), P.J. Moore and P.M. Sagar (New Zealand)
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Spatial distribution of predator/prey interactions in the Scotia Sea: implications for measuring predator/fisheries overlap
Abstract: The measurement of spatial overlap between predators and fisheries exploiting a common ... distribution of predators, krill and krill fisheries and an effort-corrected index of relative abundance as a ... overlap. Despite distinct differences in foraging ecology a group of krill-dependent species including ... had a characteristic scale of c 200 km and the relationship with distance from land showed a log ...
Meeting Document : WG-EMM-02/14 : Autor(es): K. Reid, M. Sims, R.W. White and K.W. Gillon (United Kingdom)