Resultados de la búsqueda
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Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
Abstract: Variability is a key feature of the pelagic ecosystems of the Southern Ocean and an ... fluctuations observed during some years. Low krill abundance was associated with reduced representation of the ... 3+ age group, whereas when krill were abundant the 3+ age class was the major age group present. The ... mortality rates will be a valuable next step. The dominance of the changes in krill population age structure ...
Meeting Document : WG-EMM-01/53 : Autor(es): E. Murphy and K. Reid (United Kingdom)
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Adélie penguins as indicators of the state of the sea-ice in Adélie Land
factors. First, the season saw an extreme sea-ice extent that forced Adélie parents to cover great ... desertion by the partner and the risk of dying of prolonged fast for the chick(s). Second, the season was ... -14, as sea ice extended as far as 80 km from the colony but over the entire breeding period. Snow ... years” occurring within three breeding seasons will definitely affect the demographics of the population ...
Meeting Document : WG-EMM-17/01 Rev. 1 : Autor(es): Y. Ropert-Coudert, A. Kato and C. Barbraud
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CCAMLR MPAs and the global climate and biodiversity crisis
Performance Review Panels (2008 and 2017, respectively) made recommendations for CCAMLR to advance its MPA ... targets call for a global network of MPAs to curb biodiversity loss, and both the first and second CCAMLR ... CCAMLR MPAs. This has implications not only for the conservation of marine life in the Convention Area ... bulk of a representative system of MPAs by 2020, specifically recommending that CCAMLR: Acknowledges ...
Meeting Document : CCAMLR-38/BG/44 : Autor(es): Submitted by ASOC
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Dynamic model of krill Euphausia superba swarm
Abstract: During the Italian Antarctic Expeditions to the Ross Sea, in the years 1989- 1994 ... (Okubo, 1980, 1986). It was assumed that the above mentioned model can also be applicable to krill swarms ... normally used for fish groupings. Author(s): Kalinowski, J., Azzali, M. Title: Dynamic model of krill ...
Meeting Document : WG-EMM-95/68 : Autor(es): Kalinowski, J., Azzali, M.
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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)
Abstract: The workshop was convened to follow up the agreement in the 2018 meeting of CCAMLR on ... an approach to facilitate progress on the further development of the Weddell Sea MPA proposal. In its ... Members to further collate and enhance information for the sub-area east of the prime meridian over the ... next few years. The workshop that had multi-meber participation had two objectives. First, to discuss ...
Meeting Document : WG-EMM-2019/14 : Autor(es): Delegation of Norway
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
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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Feasibility of trawl surveys to estimate abundance of juvenile toothfish in Subarea 88.1
conducting trawl surveys for juvenile toothfish in Subarea 88.1 (Ross Sea). Potential problems including a ... , were considered using data from published and unpublished literature, the exploratory longline fishery ... average over the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January ... –February because of ice. Ice cover varied greatly between years, with the untrawlable area ranging from 31 ...
Meeting Document : WG-FSA-SAM-04/07 : Autor(es): Wood, B.A., ODriscoll, R.L., Hanchet, S.M.
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Adélie penguin colony size predicts south polar skua abundance on Ross Island, Antarctica
carrion. We estimated skua abundance at Adélie penguin colonies on Ross Island in two consecutive years ... and tested for a relationship between these estimates and penguin colony sizes. We used distance ... areas that skuas occupied. Applying our regression model to published mean Adélie penguin colony sizes ... also likely an overestimate. We plan to revise our estimates and regression model by redefining the ...
Meeting Document : WG-EMM-14/55 : Autor(es): D.J. Wilson, P.O’B. Lyver (New Zealand), A.L. Whitehead (Australia), T.C. Greene (New Zealand), K. Dugger (USA), B.J. Karl, J.R.F. Barringer, R. McGarry (New Zealand), A.M. Pollard and D.G. Ainley (USA)
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Acoustic estimates of krill abundance at South Georgia, 1981–1998
of the years between 1990 and 1998 it was possible to calculate separate biomass estimates for the ... Georgia are presented for periods within ten austral summers between 1981 and 1998. This time series ... includes some previously published estimates arising from cruises where determination of krill density was ... a primary objective, and estimates derived for the first time here from acoustic data collected as a ...
Meeting Document : WS-AREA 48-98/9 : Autor(es): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)
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KRILL FISHERY BEHAVIOUR IN THE SOUTHWEST ATLANTIC
). Other nations do not have a preference for an upper limit of catch. Locations of operations were very ... /operational requirements in an area. These kinds of analysis show the importance of good year-round data from ... Abstract: 10 years worth of recent finescale haul-by haul krill data were used to characterize ... . However, this pattern only holds for operations by Japan. Preferred level of catch by Japan derived ...
Meeting Document : WG-EMM-08/39 : Autor(es): S. Kawaguchi (Australia)