Resultados de la búsqueda
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Integrated weight longlines with paired streamer lines – best management practice for demersal longline fisheries: preliminary results
Abstract: Minimizing the time gear is available to seabirds by increasing the sink rate of ... mitigation trials targeting Pacific cod in the Bering Sea, Alaska, USA. Our objective was to evaluate IW as a ... behaviour, sink rate of the gear and breaking strength. All mitigation technologies dramatically decreased ... demonstrated that IW longlines reduce risk to seabirds by minimizing the distance astern that birds have access ...
Meeting Document : WG-FSA-06/52 : Autor(es): K. Dietrich, E. Melvin and L. Conquest (USA)
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Preliminary examination of otolith microchemistry to determine stock structure in Antarctic toothfish (Dissostichus mawsoni) between SSRU 88.1C and 88.2H
CCAMLR SSRUs 88.1C (Ross Sea) and 88.2H (Amundsen Sea), could be differentiated by the trace elemental ... concentrations in the otolith edge and then to (ii) assess the potential of natal signatures to distinguish ... stocks among these regions. For the elements (Mg, Al and Sr) spatial variation in otolith chemistry was ... shown. This resulted in the correct classification of 63% of fish overall to their original capture ...
Meeting Document : WG-SAM-14/33 : Autor(es): R. Tana, B.J. Hicks, C. Pilditch and S.M. Hanchet (New Zealand)
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Fishing ground selection in krill fishery: trends in its patterns across years, seasons, and nations
scale data. Among the 15 SSMUs within Areas 48.1, 48.2 and 48.3 including the pelagic SSMUs, only one ... third of them were identified as the main contributors to the total catch. A shift of operational timing ... seasonal SSMU selection were characterized by following the result of cluster analysis. Frequently used ... SSMUs did not always match the areas of high krill densities observed by scientific surveys, and ...
Meeting Document : WG-EMM-05/28 : Autor(es): S. Kawaguchi (Australia), K. Taki and M. Naganobu (Japan)
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Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1999/2000
associated with seabirds at Bird Island, South Georgia. In this, the seventh year of standardised recording ... . Quantities of fishing gear remained within the levels of previous years for all other species, except black ... -browed albatross, which increased by133% from the previous maximum. Marine debris (the vast majority of ... which were plastics) showed 75% and 93% increases from the previous maxima for wandering albatross and ...
Meeting Document : SC-CAMLR-XIX/BG/04 : Autor(es): Delegation of the United Kingdom
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Delayed laying and prolonged fasting in Adelie penguins Pygoscelis adeliae
sites had to delay egg laying until the snow melted. Maximum length of fasting periods comprising pre ... at the subcolony sites. Adélie Penguins at Ardley Island inhabit both small rocky outcrops and flat ... , stony hillocks (storm bars). The latter had a distinctly thicker snow cover this time so that the ... pebbles necessary for nest building were unattainable. Consequently, we observed the behaviour of the ...
Meeting Document : WG-CEMP-94/23 : Autor(es): Joachim Ulbricht and Detlev Zippel (Germany)
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Foraging energetics of grey headed albatrosses Diomedea chrysostoma at Bird Island, South Georgia
Albatrosses Diomedea chrysostoma were measured, using the doubly labelled water method, at Bird Island, South ... ) was 27.7 W, 2.5 times the estimated basal metabolic rate (BMR). On average the birds ingested nearly ... twice as much food energy as they expended to obtain it. The metabolic rate during flight (estimated ... ) times the predicted BMR. This is the lowest cost of flight yet measured, but consistent with the highly ...
Meeting Document : SC-CAMLR-VII/BG/31 : Autor(es): D.P. Costa (USA) and P.A. Prince (United Kingdom)
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Notification for research vessel activity in Divisions 58.4.4a and 58.4.4b
Abstract: The main objective of this research is to collect various biological and physical data ... the status of these stocks. No information related to recent stock size exists in this area due to the ... interest to know the current stock size. Also, tagging activities during this survey will contribute to the ... future investigation on the distribution and population structure of Dissostichus spp.. A notification is ...
Meeting Document : SC-CAMLR-XXVI/09 : Autor(es): Delegation of Japan
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CPUE values derived from Soviet fishery statistics as indicators of Antarctic krill density fluctuations in 1977–1991
Abstract: The average CPUE values, annual and calculated for the periods of 1977-1986 and 1986 ... fluctuations. Rather high stability of the values investigated is revealed. It is proposed that krill density ... of 170-200 g/m2 may be considered as an average characteristic value for the area 48. It was revealed ... , that interannual CPUEs variability is lower for the area 48 as a whole, comparing subareas, most ...
Meeting Document : WG-EMM-04/39 : Autor(es): F.F. Litvinov, A.Z. Sundakov and G.N. Andrianov (Russia)
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Sexing fledglings and yearlings of magellanic penguins by discriminant analysis of morphometric measurements.
Abstract: Discriminant analysis was used to identify the sexes of fledglings and yearlings in the ... 102 fledglings and 140 yearlings from the breeding stock at Punta Clara, Chubut, Argentina. Total ... (body) length and bill depth were the most useful variables for discriminating between age classes ... , followed by length of the middle toe and bill length. Yearling, besides being distinguishable by plumage ...
Meeting Document : WG-CEMP-90/42 : Autor(es): J.A. Scolaro (Argentina)
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Proposal for a CCAMLR Workshop on Marine Protected Areas (2011)
Abstract: The Scientific Committee has agreed that the proposed 2011 workshop should be a ... priorityfor support by the MPAs Special Fund. It requested that the MPAs Special FundCorrespondence Group ... should develop a proposal for the workshop, and that funds could beset aside for this purpose as required ... (SC-CAMLR-XXVIII, paragraph 3.32). The Correspondence Group has therefore developed this preliminary ...
Meeting Document : WG-EMM-10/31 : Autor(es): MPA Special Fund Correspondence Group