Résultats de la recherche
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Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.1
to 170 cm in length, with a broad mode at approximately 120–160 cm (Figure 2). Weighted Frequency ... operating in this fishery are required to conduct fishery-based research in accordance with Conservation ... catch limits in the early stages of fishery development. Scenarios were developed using a range of tag ... biomass of fish in this division is also similar to those subareas. This is inconsistent with the ...
Document : Site Section: Publications
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Distribution of foraging by female Antarctic fur seals
. The result was consistent with past observations from ship-based surveys and it allowed estimation of ... pattern was consistent among years of different prey availability. Lactating females were constrained to ...
Meeting Document : WG-EMM-03/38 : Auteur(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Ecosystem studies carried out during the second Ukrainian Marine Antarctic Expedition in Subareas 48.2 and 48.1 in 1998
, generation of 1995); in the latter- krill of the second and third group with the evident share of the ... navigational season of 1998 as abnormally cold), recruitment of the stock (for the first time for recent years ...
Meeting Document : WG-EMM-00/5 : Auteur(s): V. Bibik and P. Gozhik (Ukraine)
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Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill
ecosystem with the most obvious impacts on survival and breeding success of some of the major krill ... . Fluctuations in year class success in parts, or all, of the population across the Scotia Sea, can generate ... . There is now extensive evidence that there are years when there is a very low abundance of Antarctic ...
Meeting Document : WS-AREA 48-98/8 : Auteur(s): E.J. Murphy, J.L. Watkins, K. Reid, P.N. Trathan, I. Everson, J.P. Croxall, J. Priddle, M.A. Brandon, A.S. Brierley (UK) and E. Hofman (USA)
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Some specific characteristics of Dissostichus eleginoides biology in the vicinity of the Kerguelen Islands (Division 58.5.1)
food component in December-February were replaced with natal-subtropic species of the squid ... Abstract: For recent years Dissostichus eleginoids is the main target species of trawling and ...
Meeting Document : WG-FSA-96/16 : Auteur(s): Pshenichnov, L.K.
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A review of by-catch in CCAMLR exploratory toothfish fisheries
to carry out research on associated organisms have increased with time but charismatic megafauna tend ... skates. Bycatch by weight formed 6.7% of total catch per year, however the number of individuals landed ... years, despite no significant reduction in fishing effort probably linked to changes in landings of ...
Meeting Document : WG-FSA-14/16 : Auteur(s): E. McClure, K. Reid (Secretariat)
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Revised research plan for the 2017/18 exploratory longline fishery of D. mawsoni in Subarea 48.6 by South Africa and Japan
were released in the most recent year as effective for the biomass estimation, except for 48.6_4 which ... current research operation in Subarea 48.6 for the next fishing season with the same survey design ... considered the last three years when estimating biomass. The estimated median stock sizes in blocks 48.6_2W ...
Meeting Document : WG-FSA-17/10 : Auteur(s): Delegations of Japan and South Africa
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Report of the Workshop on data and modelling issues relevant to the planning of a potential Marine Protected Area (MPA) east of the zero meridian in the Weddell Sea (MAUD)
measures addressing the western subarea WSMPA proposal, and 2) undertook to engage with Germany and other ... next few years. The workshop that had multi-meber participation had two objectives. First, to discuss ...
Meeting Document : WG-EMM-2019/14 : Auteur(s): Delegation of Norway
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Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution
heterogeneity with another of the haul-level methods giving similar estimates. The year-level methods gave very ... fishing year is therefore important for such assessments and this issue is studied using simulation ... . Between-haul heterogeneity within fishing year was simulated using samples from the Dirichlet-multinomial ... (D-M) distribution with marginal class probabilities generated using a simple age-structured model ...
Meeting Document : WG-SAM-07/7 : Auteur(s): S.G. Candy (Australia)
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On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment
comparison of results of stock assessment based on bottom trawl surveys (1984-1997) with the total catch ... icefish concentrations reaches 40-50 m;- at scientific trawlings the use of trawls with mesh less than 80 ... ;- catchability of a "slower" small-mesh bottom trawl with the best will of researches is not 1.0;- as a ... surveys in 1990). As a result, over more than 10 years bottom surveys pervert the real state of near ...
Meeting Document : WG-FSA-00/45 : Auteur(s): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)