Resultados de la búsqueda
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Monitoring and managing the effects of environmental change on toothfish assessments
Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... environmental conditions that are maintained over a number of years, which includes the effects of global ... climate change. The effects of environmental variability and change on toothfish population dynamics and ... productivity are largely unknown and are difficult to predict given our current understanding of the Southern ...
Meeting Document : WG-SAM-18/22 : Autor(es): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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A revised Krill Trawl logbook for the 2019 season
Abstract: During the 2017 Scheme of International Scientific Observation workshop (WS-SISO), the ... data collection requirements for krill observers were discussed, with recommendations tabled in the WS ... -SISO Convener’s Report (SC-CAMLR-XXXVI/08) for amendments to the krill e-logbook used by SISO observers ... . This paper summarizes the changes to the e-logbook for proposed introduction in the 2019 season. Author ...
Meeting Document : WG-EMM-18/39 : Autor(es): CCAMLR Secretariat
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Changes observed in krill length frequency distribution during repeated sampling on the South Georgia shelf in 2000 January–February
on 22 February and 3 February correspondingly. The comparative analysis revealed the strong ... difference in krill inhabiting Northwest and Northeast South Georgian waters. According to the data available ... the difference do not disappear in time, instead certain increase of krill length was observed in both ... parts. The data analyzed confirm that krill on the Northern South Georgian shelf has different origin ...
Meeting Document : WG-EMM-01/40 : Autor(es): V.A. Sushin and F.F. Litvinov (Russia)
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Review of biological characteristics of the Antarctic toothfish (Dissostichus mawsoni) and its distribution in Antarctic waters
Abstract: Results of published studies on the biology, biomass and distribution of the Antarctic ... toothfish (Dissostichus mawsoni) were reviewed. The review focused on those aspect of the species which are ... of importance for the assessment of its biomass and identification of its stocks. The trophodynamics ... of D. mawsoni are mentioned only in brief. Most published materials refer to studies conducted in the ...
Meeting Document : WG-FSA-98/37 : Autor(es): Secretariat
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Designing Marine Protected Area networks: insights from the CHARM3 project
Action 12 of the CHARM3 project, which focuses on spatial conservation planning in the English Channel ... . The first analysis investigates the use of species area curves for setting marine habitat targets and ... shows this approach is sensitive to sample size and the type of species richness estimator. Thus, there ... targets are objective and scientifically defensible. The second analysis combines the Marxan and MinPatch ...
Meeting Document : WS-MPA-11/22 : Autor(es): R.J. Smith and K. Metcalfe (UK)
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THE AUSTRALIAN SKATE TAGGING PROGRAM AT HEARD ISLAND AND MCDONALD ISLANDS, CCAMLR DIVISION 58.5.2
Abstract: Tagging of the three species of skates taken as by-catch in the Heard Island and ... McDonald Islands toothfish fishery, Bathyraja eatonii, B. irrasa and B. murrayi has taken place over the ... last eight years with nearly 6,000 skates tagged. The recapture rate has been low, less than one ... were released. The mean distance between release and recapture was 4.8 nautical miles, even though the ...
Meeting Document : WG-FSA-08/55 : Autor(es): G.B. Nowara and T. Lamb (Australia)
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
Abstract: Information on natural mortality rates of the mackerel icefish, Champsocephalus gunnari ... , from the period prior to large scale commercial harvesting is discussed. Methods based on population ... age structure and growth parameters are used. It is concluded that only in the three earliest years ... , 195 1, 1964 and 1966, do the data reflect an unexploited population. The best estimate of M from ...
Meeting Document : WG-FSA-97/05 : Autor(es): Everson, I.
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Numerical model of ecosystem including Euphausia superba Dana as a key species in the Antarctic Ocean
Abstract: On the processes to investigate a proper model for understanding the processes that ... govern the biochemical cycle in Antarctic Ocean, we made a research plan as follows: (1) to develop an ... ecology (4) to develop a numerical model to couple the OGCM and ecosystem models (5) to develop a ... numerical model including the effect of marine mammal consumption and catch of krill (6) to develop the ...
Meeting Document : WG-EMM-95/52 : Autor(es): Naganobu, M., Kishi, M.J.
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Diagnostic model of functioning of Antarctic krill population in the Cooperation Sea
mathematical modelling of Antarctic krill population in the Cooperation Sea. The choice of investigation area ... , its stocks, other pelagic system components, inhabitancy conditions, landing by FVs for the period ... from 1978 to 1984 and 1988. The objective of the researches was to reveal causes of sharp fluctuations ... in krill abundance in the Cooperation Sea basing on mathematical modelling. The main task was to ...
Meeting Document : WG-Joint-94/07 : Autor(es): V. Belyaev and M. Khudoshina (Ukraine)
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Development of a fine-scale model of land-based predator foraging demands in the Antarctic
Abstract: The CCAMLR Secretariat has been requested to provide annual calculations of the catch ... of krill within the critical period-distance of land-based predators in Subareas 48.1 and 48.2 (100km ... from colonies, December- March). This index of the overlap of predators and the fishery is unsuitable ... is developed, which is based on a detailed model of the supposed functional interaction between these ...
Meeting Document : WG-Joint-94/08 : Autor(es): D.J. Agnew and G. Phegan (Secretariat)