Search results
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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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Size compositions of males and females in the course of the life cycle of Euphausia superba
different years. The observed variations were related to stages of krill maturity during the reproductive ... years. The observed variations were related to stages of krill maturity during the reproductive cycle ... ) is the only criterion for examining population age structure in the field. Usually, when analyzing size ... m layer. Indeed, one reported catch using a Juday net (36 cm diameter) from 200 to 500 m and deeper ... , initial value (Figure 7). The above explanations are not the only ones possible and some other ... (age) groups, but also of the sequence of reproductive cycle stages. The latter relates ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Author(s): Makarov, R.R.
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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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Acoustic data analysis and models of krill spatial distribution
biomass estimate. The wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales ... . The computed frequency distribution of krill biomass is bimodal and appears to be the mixture of two lognormal ... distributions. These two distributions may correspond to the between and within patch biomass. These results ... estimate. The wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales smaller ...
Meeting Document : SC-CAMLR-VII/BG/25 : Author(s): United States of America
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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
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A proposal to improve observer safety: independent two-way satellite communication devices and personal lifesaving beacons
of the CCAMLR System of Scientific Observation (SISO) to require that observers be equipped with independent two ... Title: A proposal to improve observer safety: independent two-way satellite communication devices ... and personal lifesaving beacons Microsoft Word File: e-cc-xxxvii-20.docx Approval: Approved Secretariat ... System of Scientific Observation (SISO) to require that observers be equipped with independent two-way ...
Meeting Document : CCAMLR-XXXVII/20 : Author(s): Delegation of the USA
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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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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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New photo-identification catalogues from Crozet and Kerguelen Islands
for this issue. One of the key point to understand the process of depredation is to use photo-identification ... . One of the key point to understand the process of depredation is to use photo-identification, pictures ... concern for fishery. Killer whale and sperm whales are the two odontocetes species mainly responsible ... for fishery. Killer whale and sperm whales are the two odontocetes species mainly responsible for this issue ...
Meeting Document : WG-FSA-15/71 : Author(s): P. Tixier, N. Gasco and C. Guinet (France)
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Results of the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the 2013/14 season
and 58.4.1C SSRUs. A prospective estimation of the local biomass (B LOC) of one localized area ... models. The IEO is starting the process of reading otoliths with ageing purposes, data to be added ... for ageing purposes are also presented. Author(s): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain ... and 58.4.1C SSRUs. A prospective estimation of the local biomass (BLOC) of one localized area ...
Meeting Document : WG-SAM-14/12 Rev. 1 : Author(s): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain)