Search results
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Krill population trends
for the last 20 years. There have been suggestions of changes in the distribution and abundance of Antarctic ... for the last 20 years. There have been suggestions of changes in the distribution and abundance of Antarctic ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Author(s): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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Investigating emigration in stock assessment models of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H
to explain the remaining data. Models that include more than one area may be required to model both ... to explain the remaining data. Models that include more than one area may be required to model both ... of tagged fish with few being recaptured after more than 3 years at liberty, a steepening of the decay rate ... that includes both tagged and untagged fish), but requires a significant amount of immigration each year ...
Meeting Document : WG-FSA-14/56 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Setting management goals using information from predators
Abstract: This paper is a published book chapter examining how goals and reference points might ... This paper is a published book chapter examining how goals and reference points might be set ...
Meeting Document : WG-EMM-07/P7 : Author(s): A. Constable (Australia)
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Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
0 APYI'l1X Bl1~aX naCTOHOI'l1X, Ha6nlO~aB[[/l1XCH BO BpeMH npOBe~eHl1H CbeMKl1. B KaqeCTBe OnTI1Man bHblX ... pinnipeds were tallied by species, with no differentiation made between age and sex classes except for fur ... over the past 80 years, with the first post-exploitation record of successful pup production being ... , Aspland or O'Brien Islands. The absence of animals at these islands conforms to previous survey data ... largest pupping sites are at Telmo Island and Cape Shirreff, on the north coast of Livingston Island ... 4000 individuals. Notes on other pinniped species observed during the survey are presented. The optimal ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 427-440 : Author(s): Bengtson, J.L., L.M. Ferm, T.J. Härkönen, E.G. Schaner and B.S. Stewart
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Age and growth of Antarctic Euphausiacea (Crustacea) under natural conditions
once. Author(s): V. Siegel (FRG) Title: Age and growth of Antarctic Euphausiacea (Crustacea) under ... Age and growth of Antarctic Euphausiacea (Crustacea) under natural conditions ... Peninsula and the southeastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... and the southeastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years for the krill ...
Meeting Document : SC-CAMLR-VI/BG/24 : Author(s): V. Siegel (FRG)
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G
2–3 years) it be made mandatory for vessels to complete all of their sets inside one or more ... 2–3 years) it be made mandatory for vessels to complete all of their sets inside one or more ... be relaxed in future years once sufficient tags have been recaptured to carry out an assessment of the stock ... be relaxed in future years once sufficient tags have been recaptured to carry out an assessment of the stock ...
Meeting Document : WG-FSA-14/59 : Author(s): S.M. Hanchet and S.J. Parker (New Zealand)
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Do fish prey size affect the foraging patterns and breeding output of the Antarctic shag Phalacrocorax bransfieldensis?
and Notothenia rossii observed in the last eighteen years around the South Shetland Islands, may be one ... observed in the last eighteen years around the South Shetland Islands, may be one of the reasons to explain ... twelve years at colonies monitored in that archipelago. Author(s): R. Casaux and A. Baroni (Argentina ... the steady decrease in the number of breeding Antarctic shags observed in the last twelve years at colonies ...
Meeting Document : WG-EMM-02/4 : Author(s): R. Casaux and A. Baroni (Argentina)
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Effect of a shore-based sampling program on Notothenia coriiceps populations
of 1992/93 to 1994/95 at one specific zone (site 1) with those taken in the same last summer at two close ... summers of 1992/93 to 1994/95 at one specific zone (site 1) with those taken in the same last summer ... to an intensive sampling effort carried out at one specific site. Author(s): R. Casaux and E. Barrera-Oro ... of the proportion of larger fish in the population, but related to an intensive sampling effort carried out at one ...
Meeting Document : WG-FSA-99/24 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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A life table for female Antarctic fur seals breeding at Cape Shirreff, Livingston Island
Abstract: Mark-resight data were analysed for five cohorts (1997-2001) to estimate age-specific ... juvenile survival, age at first reproduction, and resight probabilities. Longitudinal histories of presence ... and pregnancy of adult females (aged by cementum annuli) were used to estimate age-specific survival ... . These data are used to construct an age-dependent life table for female fur seals breeding at Cape Shirreff ...
Meeting Document : WG-EMM-06/39 : Author(s): M.E. Goebel, B.I. McDonald, J.D. Lipsky (USA), V.I. Vallejos, R.A. Vargas, O. Blank (Chile), D.P. Costa (USA) and N.J. Gales (Australia)
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Krill catch distribution in relation to predator colonies 1987 to 1992
is similar to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken within 100 ... years. It is estimated that the catch in the critical period-distance was equal to 12% and 15 ... % of the total exploitation of krill in these two subareas respectively. Author(s): Secretariat Title: Krill ... to that seen for other years, with 70% of the total catch from Subarea 48.1 being taken within 100 km ...
Meeting Document : WG-KRILL-93/10 : Author(s): Secretariat