Resultados de la búsqueda
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Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
Abstract: This paper investigates the influence of mixing of fish, and the uneven distribution of ... tag placements and recapture effort, on bias in the Petersen estimate. It does so by constructing a ... linear model of the South Georgia toothfish fishery, simulating fish movements within this system and ... overlaying various combinations of tagging and recapture effort to investigate bias. The fishable grounds ...
Meeting Document : WG-FSA-SAM-05/6 Rev. 1 : Autor(es): D.J. Agnew, G.P. Kirkwood, J. Pearce and J. Clark (United Kingdom)
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Ecosystem modelling for the Antarctic krill fishery
the Antarctic ecosystem. This species serves as prey for many organisms in the ecosystem and has also ... been the target of an small industrial fishery since the mid 1970s. New quotas have recently been set ... but there is concern that the reduction in krill biomass due tome fishery may have impacts on other ... krill predators such as penguins, seals and whales. In order to evaluate the effects of krill fishing on ...
Meeting Document : WG-EMM-01/65 : Autor(es): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)
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Proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 14 years in ... Subarea 88.1 and for nine years in Subarea 88.2. Associated research has led to an assessment of the ... fisheries potential yield, but a source of ongoing uncertainty in the stock assessment concerns recruitment ... time from the fishery. At its 2010 meeting, the Scientific Committee agreed that a time series of ...
Meeting Document : WG-SAM-11/16 : Autor(es): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
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REPORT ON ACTIVITIES OF THE SCIENTIFIC COMMITTEE ON ANTARCTIC RESEARCH (SCAR) 2007/08
Abstract: This paper reports on the various activities conducted by or involving SCAR that relate ... biennial business and delegates meetings, and the SCAR/IASC 2008 IPY Open Science Conference, as well as ... reports on progress with the Evolution and Biodiversity in the Antarctic (EBA) programme, SCAR-MarBIN, the ... Southern Ocean Continuous Plankton Recorder Survey and the Census of Antarctic Marine Life (CAML) project ...
Meeting Document : CCAMLR-XXVII/BG/42 : Autor(es): SCAR Observer to CCAMLR (G. Hosie, Australia)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 1996 winter and 1996/97 pup-rearing season
Abstract: The results of the survey of entanglement of Antarctic fur seals at Bird Island, South ... Georgia for the sixth consecutive winter (1996) and eighth consecutive summer (1996/97) are reported. In ... winter 17 seals were observed entangled, double the number in 1995 and the third highest total so far. As ... proportion. Synthetic string (fishing line) (47%), fishing net (24%) and packaging bands (18 %) were the main ...
Meeting Document : SC-CAMLR-XVI/BG/06 : Autor(es): Delegation of the United Kingdom
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Penguin foraging behavior in relation to the distribution of prey
Abstract: The diving behavior of 7 chinstrap penguins (Pygoscelis antarctica) (N=12,171 dives ... ) was measured concurrently with a hydroacoustic assessment of the vertical distribution and abundance ... of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland ... migration pattern, being dispersed in the upper portion of the water column at night and more concentrated ...
Meeting Document : WG-KRILL-93/47 : Autor(es): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)
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Research and monitoring to support an MPA in the Ross Sea Region
Abstract: Conservation Measure 91-04 establishes the requirement for research and monitoring ... research and monitoring plans shall, to the extent necessary and inter alia, specify “(a) scientific ... research pursuant to the specific objectives of the MPA; (b) other research consistent with the specific ... objectives of the MPA; and/or (c) monitoring of the degree to which the specific objectives of the MPA are ...
Meeting Document : WG-EMM-12/46 : Autor(es): G.M. Watters and C.S. Reiss (USA)
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A false positive in the CCAMLR tag overlap statistic arising from low catch volume and consequent limited sample size
Abstract: The draft CCAMLR compliance report has recorded that when fishing in Subarea 88.2 in ... 2013/14 the vessel Argos Georgia achieved a tag overlap statistic of 52% rather than the required ... minimum of 60% as specified in CM 41-01. A review of the data indicates that the number of fish tagged was ... above the rate per tonne required by CM 41-10, but due to sampling noise the distribution of the length ...
Meeting Document : WG-FSA-14/31 : Autor(es): C. Darby (United Kingdom)
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Plan of research program of the Ukraine in Subarea 48.2 in 2016 (second season)
Abstract: During March-April 2015 Ukraine began the research within statistical subarea 48.2 in ... accordance with the recommendations of CCAMLR-XXXIII. The certain number of the following bottom long line ... surveys are proposed to be conducted during March-April 2016. The research surveys will be conducted by ... the Ukrainian flagged FV SIMEIZ. The data collected in first year of the research showed the ...
Meeting Document : WG-SAM-15/40 : Autor(es): Delegation of Ukraine
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A meta-analysis of by-catch in the Ross Sea toothfish fishery
Abstract: Following the recommendation of WG-FSA in 2014 the Secretariat has undertaken an ... analysis of bycatch in CCAMLR longline fisheries. The numerical target catch ratio (the number of target ... fish as a proportion of the total number of fish caught), using haul by haul data from the Ross Sea ... toothfish fishery from 2008 – 2014, was used as a single metric to examine the amount of bycatch reported by ...
Meeting Document : WG-FSA-15/04 Rev. 1 : Autor(es): CCAMLR Secretariat