Resultados de la búsqueda
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The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin
, its distribution ranges from the Scotia Arc region, namely South Georgia, in the Atlantic Ocean sector ... to the Kerguelen-Heard Plateau in the Indian Ocean sector. Mackerel icefish have been heavily ... exploited since the beginning of the 1970's with reported annual catches exceeding 50- 100 000 tomes in ... characteristics in common, such as feeding mode and food, early life history, and growth in the first years of ...
Meeting Document : WG-FSA-96/24 : Autor(es): Everson, I., Kock, K.-H.
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Beach litter survey Signy Island, South Orkney Islands, 1993/94
summers. Debris was cleared from three study beaches, Foca Cove, Cummings Cove and Starfish Cove, in ... from any scientific research stations in the South Orkney Islands. The beach litter surveys carried out ... in 1990/91, 1991/92 and 1992/93 showed a drop in both the weight of debris and the total number of ... kg in 1993/94 compared to 4.45 kg in 1992/93, and the number of items recovered increased to 118 ...
Meeting Document : CCAMLR-XIII/BG/11 : Autor(es): Delegation of United Kingdom
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Exploratory longline fishing around the Kerguelen Islands (Division 58.5.1). Description of the fishing effort; catchability and target size of Dissostichus eleginoides
about 2 400 to 3 600 straight hooks, which are from 61 to 75 mm in length. The bait used is either ... fact that fish become unhooked along the side of the ship, which leads to a real catchability value in ... eleginoides confirm that fish caught are large, their average length being greater than that in catches made ... previously by trawlers in the same area. This average length is comparable for the two successive fishing ...
Meeting Document : WG-FSA-92/31 Rev. 1 : Autor(es): G. Duhamel (France)
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New Zealand Antarctic research programme
reconnaissance and photography are used in the Ross Sea sector of Antarctica to determine where Adelie penguins ... surviving chicks in mid-January (when weight and measurements of samples of chicks at Capes Royds and ... world population. Some rookeries are photographed in all, or most, of the seasons to study the pattern ... of natural population fluctuations. Populations at nearly all rookeries have increased markedly in ...
Meeting Document : WG-CEMP-92/24 : Autor(es): P.R. Wilson (New Zealand)
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
occurred in the same time and place (i.e. within a specific distance and in the same fishing season). The ... in the Ross Sea region. This index was subsequently used in 2013 to select the tagging data to be ... included in the stock assessment for the Ross Sea region and Amundsen Sea region, with the understanding ... to include in the stock assessment, with respect to both tag release and tag recapture data. Here we ...
Meeting Document : WG-SAM-14/30 : Autor(es): S. Mormede (New Zealand)
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New Zealand’s exploratory fishery for toothfish within the SPRFMO Convention Area: update and future directions
caught, that these were mostly male (~85%), and that most fish were in spawning condition or spent. These ... will be shared with CCAMLR and had been used in the stock assessment of Antarctic toothfish in the Ross ... collected in more detail than the timing of the voyages has allowed so far. In addition, to maximise the ... Antarctic toothfish in the region. It is anticipated that this model, targeted for completion in 2021, will ...
Meeting Document : SC-CAMLR-XXXVI/BG/18 : Autor(es): M. Cryer, A. Dunn and J. Fenaughty
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New Zealand submission for the trial of the CCAMLR observer training program accreditation scheme
Abstract: In 2011, the Scientific Committee endorsed the procedure for training and accreditation ... presented in SC-CAMLR-XXX/08, and invited Members to participate in a trial of the initial review and ... technical peer review. These are described in Parts a–c of the proposed procedure for a CCAMLR observer ... -hoc TASO noted that in order to receive high-quality data from the CCAMLR Scheme of International ...
Meeting Document : WG-FSA-17/41 : Autor(es): A. Dunn, D. Kerrigan and A. McNabb
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CASAL model evaluation incorporating the calculation of harvest rate for D. eleginoides at Division 58.4.4b
Abstract: In order to achieve the milestone “1.5 Update CASAL model” of the ongoing research plan ... 58.4.4b were revised. Following WG-SAM-2019 suggestions (para 6.76 in the WG-SAM2019 report), we conducted ... (CAY and MAY) as defined in CASAL manual (Bull et. al. 2012) using each CASAL runs according to WG-SAM ... -2019 suggestions (para 6.76 in the WG-SAM2019 report). A single-sex age structured CASAL model was ...
Meeting Document : WG-FSA-2019/62 : Autor(es): T. Okuda and F. Massiot-Granier
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CEMP INDICES: 2011 UPDATE
indicator species collected by standard methods in the three Integrated Study Regions of the Convention Area ... anomalies in these data. This report covers biological indices only. Six Members submitted data for 13 sites ... and 12 CEMP parameters in 2010/11. No data was received from CEMP sites in Area 88. Since 1989/90, a ... total of 116 anomalous values (anomalies, see Appendix 1) have been observed in the times series of ...
Meeting Document : WG-EMM-11/06 : Autor(es): Secretariat
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Impact of predation by Cape fur seals Arctocephalus pusillus on Cape gannets Morus capensis at Malgas Island, Western Cape, South Africa
(Morus capensis) fledglings around Malgas Island in the 2000/01 breeding season, 11 000 in 2003/04 and 10 ... 000 in 2005/06. This amounted to about 29%, 83% and 57% of the overall production of fledglings at the ... island in these breeding seasons, respectively. Preliminary modelling suggests this predation is not ... sustainable. There was a 25% reduction in the size of the colony, the second largest of only six extant Cape ...
Meeting Document : WG-EMM-06/9 : Autor(es): A.B. Makhado, R.J.M. Crawford and L.G. Underhill (South Africa)