Resultados de la búsqueda
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
distribution of sizes, GSI and Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward ... spawning migration and southward feeding migration as Ross Sea stock. Life history seems to be related to ... that larvae are driven further eastward. We cannot identify an appropriate stock unit currently. The ... addition, we considered that only recaptures for 1 year at liberty is effective to estimate the ...
Meeting Document : WG-SAM-16/07 : Autor(es): Delegations of Japan and South Africa
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The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill
Abstract: A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the ... sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone ... a more favourable food environment for high larval krill growth rates. We found that complex under ... , by providing structures that offer protection from predators and to collect organic material released ...
Meeting Document : WG-EMM-18/P04 : Autor(es): B. Meyer, U. Freier, V. Grimm, J. Groeneveld, B.P.V. Hunt, S. Kerwath, R. King, C. Klaas, E. Pakhomov, K.M. Meiners, J. Melbourne-Thomas, E.J. Murphy, S.E. Thorpe, S. Stammerjohn, D. Wolf-Gladrow, L. Auerswald, A. Götz, L. Halbach, S. Jarman, S. Kawaguchi, T. Krumpen, G. Nehrke, R. Ricker, M. Sumner, M. Teschke, R. Trebilco and N.I. Yilmaz
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Investigations of krill transport factors in the local areas in the Scotia Sea: variability of krill distribution in the fishing grounds under the transport impact
samples form the basis of this work. It is shown that the multiple replacements of the water masses in ... each study areas were accompanied with pulsatory pattern of krill transport, i.e. krill transported ... biomass portions with different commercial importance were transported into the fishing grounds. The ... fleet. The authors come to a determination that the development of krill stocks management procedures ...
Meeting Document : WG-EMM-07/17 : Autor(es): S.M. Kasatkina and V.N. Shnar (Russia)
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Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea
important to the whales, a relationship with potential parallels to that known between well-studied fish ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... mawsoni). Increasingly rare, large fish are much more energetically dense and may also be socially ... apparent relationship between RSKW prevalence and the availability of large toothfish, we speculate that ...
Meeting Document : WG-FSA-12/P03 : Autor(es): D.G. Ainley and G. Ballard
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Assessing data requirements for tag-based estimates of local biomass in data-poor and exploratory fisheries
Research Block 5843a_1 with a fixed exploitation rate and various tagging rate scenarios to assess the ... estimator. The results showed that tag-based biomass estimates obtained from a low numbers of recaptures ... will have a high risk of over-estimating biomass and that for a given number of tagged fish available a ... and the consequent number of tagged fish available. Simulations of toothfish populations could be ...
Meeting Document : WG-SAM-17/13 : Autor(es): L. Robinson, P. Burch and K. Reid
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Changing status of three notothenioid fish at the South Shetland Islands (1983–2016) after impacts of the 1970–80s commercial fishery
with trends reported in seabirds that feed on juveniles of these notothenioids: decrease in the areas ... Islands region (FAO Subarea 48.1) remains prohibited since 1991; results indicate that it cannot be ... started in 1983. Our inshore results were consistent with those from offshore bottom trawl sampling in ...
Meeting Document : WG-FSA-17/P01 : Autor(es): E. Barrera-Oro, E. Marschoff and D. Ainley
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Plan of research program of the Russian Federation in Subarea 48.5 (Weddell Sea) in season 2016/17
subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... could be found in geographical location, bathymetric profile, currents system and follows from results ... reliable stock assessment and following estimation of precautionary limits in accordance with CCAMLR ... -year research program in the Weddell Sea that is prospected for 3-5 years. Detailed plan of fishing ...
Meeting Document : WG-SAM-16/25 : Autor(es): Delegation of the Russian Federation
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Plan of the research program of Russian Federation in Subarea 48.5 (Weddell Sea) in season 2017/18
subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... could be found in geographical location, bathymetric profile, currents system and follows from results ... reliable stock assessment and following estimation of precautionary limits in accordance with CCAMLR ... -year research program in the Weddell Sea that is prospected for 3-5 years. Detailed plan of fishing ...
Meeting Document : WG-SAM-17/22 : Autor(es): Delegation of the Russian Federation
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Plan of the research program of Russian Federation in Subarea 48.5 (Weddell Sea) in season 2017/18
subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... could be found in geographical location, bathymetric profile, currents system and follows from results ... reliable stock assessment and following estimation of precautionary limits in accordance with CCAMLR ... -year research program in the Weddell Sea that is prospected for 3-5 years. Detailed plan of fishing ...
Meeting Document : WG-FSA-17/25 : Autor(es): Delegation of the Russian Federation
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Notification for scientific research in 2019/20 under CM 24-01: Proposal for a winter longline survey of Antarctic toothfish in the northern region of Subareas 88.1 and 88.2
patterns may be influenced by changes in sea ice or circulation patterns that affect observed recruitment ... September 2019. The survey will be coordinated with a corresponding survey targeting Antarctic toothfish ... transport mechanism for subsequent advection patterns, all of which could be impacted by climate change ... the understanding of those parts of the adult stock that contribute to recruitment, and hence the ...
Meeting Document : WG-SAM-18/09 : Autor(es): Delegation of New Zealand