Search results
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Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment
Abstract: Using a modeling framework for toothfish population dynamics, fishing and data ... collection, this study investigated how the bias and precision of a CASAL assessment is influenced by various ... aspects of a tagging program, in particular the effects of the numbers of fish tagged, the duration of a ... simulation study indicated that: (1) A high tag size-overlap (at least 60%, better 100%) and high tagging ...
Meeting Document : WG-SAM-12/24 : Author(s): P.E. Ziegler (Australia)
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Estimating krill recruitment and its variability
Paper Title: Estimating krill recruitment and its variability Abstract / Description: A maximum ... recruits in a population sampled by a net haul survey. Preliminary results from a series of five net haul ... surveys in the South Atlantic and the Indian Ocean sectors of the Southern Ocean give a mean recruitment ... and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding result for recruitment ... 7050 Tasmania, Australia Abstract A maximum likelihood method is developed for the decomposition ... of krill density-at-length data into the proportion of recruits in a population sampled by a net ... haul survey. Preliminary results from a series of five net haul surveys in the South Atlantic and the ... Indian Ocean sectors of the Southern Ocean give a mean recruitment rate for l+ krill (the ratio of the ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Author(s): de la Mare, W.K
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Fisher training exchanges in seabird mitigation
. The aim was to provide a placement for a fisher from a Latin American county on board a vessel ... operating in the New Zealand fishery, which had a proven record of seabird-friendly fishing techniques. The ... a Chilean skipper, Luis Uribe- a swordfish fisher from working in the Southern Chilean artisanal ... fleet- on board a the Sanford vessel San Aotea II, using demersal longline methods to fish for ling and ...
Meeting Document : WG-FSA-05/47 : Author(s): S. Waugh (New Zealand)
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CCAMLR-IWC WORKSHOP TO REVIEW INPUT DATA FOR ANTARCTIC MARINE ECOSYSTEM MODELS: UPDATE ON PROGRESS 2008
an update on progress towards the holding of this workshop at the CCAMLR Secretariat. A revised ... , including seals, whales, finfish and krill. A metadatabase has been established. The groups of experts have ... cover a number of groups and a group of experts familiar with statistics, assessments and ecosystem ... modelling. Originally, the outcomes of the Workshop were envisaged to comprise a paper from each of the ...
Meeting Document : WG-EMM-08/15 : Author(s): A. Constable and N. Gales (Co-conveners)
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Methodology for automated spatial sea ice summaries in the Southern Ocean
Abstract: Sea ice is recognised as a core driver of both ecosystem dynamics and fishery ... access are in use by CCAMLR. We develop a method to spatially and temporally summarise satellite-derived ... operations around the Antarctic continental margin. A spatial view is used to characterise the spatial ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ...
Meeting Document : WG-FSA-14/54 : Author(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)
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RELEVANT ISSUES IN REGARDS TO THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES IN AREA 48
Abstract: In 2008, the Ukraine submitted a paper to the Scientific Committee highlighting the ... limits among SSMUs in Area 48 (CCAMLR- XXVII/43). The Ukraine suggested that a research plan was ... necessary for CCAMLR to fill those gaps, together with developing in future a funding mechanism to support ... useful in a course of the consideration a decision on a Stage 1 allocation. In addition, this meeting ...
Meeting Document : WG-EMM-09/31 : Author(s): L. Pshenichnov and G. Milinevsky (Ukraine)
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Update for CCAMLR WG-EMM on the BAS, BirdLife, SCAR penguin tracking database development and analysis project
Abstract: In late 2012 SCAR, BirdLife and BAS developed a successful proposal (to the UK Darwin ... . The database will have a web-based user interface that will allow data holders to submit data and ... attach a range of access levels; access may be granted only to the data holder, to a wider group, or to a ... general public domain. A penguin database (built along analogous lines and interoperable with the BirdLife ...
Meeting Document : WG-EMM-14/03 : Author(s): P. Trathan, B. Lascelles (United Kingdom) and M. Hindell (Australia)
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Review of the 2007 budget, draft 2008 budget and forecast budget for 2009
outcome of the budget for 2007, a draft of the 2008 budget and an indicative forecast for the 2009 budget ... for 2007 is not expected to exceed budget and carries forward a surplus of A$194 000 to 2008. The ... surplus includes an unbudgeted, half-year New Member Contribution of A$53 312 in respect of the People’s ... Republic of China, which applied to become a member of the Commission in July 2007. General Services Staff ...
Meeting Document : CCAMLR-XXVI/04 : Author(s): Executive Secretary
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Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
commercial fishery, with a nominal mesh size A = 80 mm and A = 100 mm, made of double twines with a thickness ... Chionodraco rastrospinosus exhibit a lower tendency to pass through meshes of the codend than Antarctic ... icefish and bumphead notothenia. The solution to the problem of ensuring selectivity of codends at a ... sufficiently good level seems possible as a result of the application of webbing with permanently open meshes ... carried out for two types of steelon codends used in commercial fishery, with a nominal mesh size A = 80 ... mm and A = 100 mm, made of double twines with a thickness of 4.2 mm. The studies covered 6 major ... rastrospinosus exhibit a lower tendency to pass through meshes of the codend than Antarctic icefish and bumphead ... notothenia. 3. The solution to the problem of ensuring selectivity of codends at a sufficiently good level ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Author(s): Zaucha, J.
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Monitoring Antarctic toothfish (D. mawsoni) recruitment in the southern Ross Sea
recruitment variability, are key inputs for integrated assessments of fish stocks. A quantitative longline ... was started in 2012. The first year established the feasibility of carrying out a random stratified ... longline survey from a fishing vessel platform, the FV San Aotea II, to monitor recruiting toothfish using ... standardised gear in a standardised manner. It also established the appropriate depths and stratum boundaries ...
Meeting Document : WG-FSA-17/57 : Author(s): S.M. Hanchet, S. Mormede, S. Parker, K. Large, A. Dunn and B. Sharp