Resultados de la búsqueda
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Phytoplankton standing stocks in relation to krill in Antarctic waters
Abstract: Investigations on krill trawl operations in the southern ocean were accompanied by the ... phytoplankton and zooplankton studies during the First Indian Antarctic Krill Expedition. The study area which ... , consisting of 32 diatoms and one dinoflagellete. Chaetoceros and Nitzschia spp. dominated the phytoplankton ... organisms. The other common diatoms present during the studies were Navicula, Rhizosolenia, Leptocylindrus ...
Meeting Document : WG-EMM-98/34 : Autor(es): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia
. Consequently, the authority responsible for the management of Southern Ocean marine resources (CCAMLR) actively ... campaigned for compliance with the MARPOL provisions relating to waste disposal at sea, and for cutting of ... incidence has been halved in recent years. However, the South Georgia fur seal population has approximately ... doubled in the same period, so that the overall total of animals entangled may even have increased ...
Meeting Document : SC-CAMLR-XV/BG/03 : Autor(es): Delegation of the United Kingdom
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Revised research plan for toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2013/14
comparative CPUE, modified Lincoln-Petersen and CASAL models following advices during the last WG-SAM meeting ... . Detailed results using CASAL models in SSRU C are described in a separated document. The catch and tagging ... data in SSRU D were not enough to be applied to modified Lincoln-Petersen and CASAL models. Thus the ... stock sizes of D. eleginoides in SSRU D is estimated only by using CPUE comparison with the stock size ...
Meeting Document : WG-FSA-13/36 : Autor(es): Delegation of Japan
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JAPANESE SCIENTIFIC OBSERVER ACTIVITIES FOR KRILL FISHERY IN CCAMLR CONVENTION AREA FROM 2003/04 TO 2007/08 FISHING SEASONS
Abstract: This document introduces the recent activities and outcome of Japanese scientific ... observers onboard the commercial krill fishing vessel from 2003/04 to 2007/08 fishing seasons. Main fishing ... grounds of the Japanese fishery were the Subareas 48.1, 48.2, and 48.3. Recent observation effort was ... concentrated to the Subarea 48.3. The observer coverage was 32.2 – 51.4 %, and exceeded 50 % in 2007/08 season ...
Meeting Document : WG-EMM-09/19 : Autor(es): M. Kiyota and T. Iida (Japan)
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IDENTIFICATION OF DATA QUALITY METRICS FOR TAGGING DATA SELECTION
Abstract: The suite of data quality metrics introduced by Middleton & Dunn (2008) is examined ... to identify those metrics that are most informative with respect to the identification of good ... rates of recapture of tags released by the trip, and above-median tag recapture rates by the trip.A ... bootstrap analysis indicates that the range of data quality metrics associated with known good tagging data ...
Meeting Document : WG-SAM-09/19 : Autor(es): D.A.J. Middleton and A. Dunn (New Zealand)
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Short note: Time series of Drake Passage Oscillation Index (DPOI) during 1952-2008 and its possible influence on environmental variability
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... westerly winds (westerlies) determined from sea-level pressure differences across the Drake Passage ...
Meeting Document : WG-EMM-08/33 : Autor(es): M. Naganobu, J. Kondo and K. Kutsuwada (Japan)
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Estimation of size at maturity and calculation of an appropriate size limit for male Paralomis formosa
-specific, median chela height of Paralomis formosa. The second derivative of the spline which made the best ... - carapace width, and Pr(72mm ≤ sBC ≤ 90mm) ≈ 0.95. The spline modeling technique appears to overcome some of ... the philosophical and statistical problems associated with estimating size at maturity by fitting ... be made to make the spline technique more robust to outliers in Y-space (crabs with regenerating ...
Meeting Document : WG-FSA-96/35 : Autor(es): Watters, G.
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Pup production and distribution of breeding Antarctic fur seals (Arctocephalus gazella) at South Georgia
Abstract: A census of the breeding population of Antarctic fur seals (Arctocephalus gazella) at ... South Georgia was carried out during the 1990/91 breeding season. Using counts of adult females ashore ... at the breeding grounds during the pupping period, together with corrections for the likelihood of a ... 269,000 (95% confidence intervals 188,000- 350,000). The breeding population in 1990/91 was reduced at ...
Meeting Document : WG-CEMP-92/39 : Autor(es): I.L. Boyd (United Kingdom)
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Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
removed from 170) during the 142 days of the 1988-89 pup-rearing season at Bird Island, South Georgia ... . This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in ... the best covered areas; a maximum value might approach 1%. Poly-propylene straps (packaging bands ... ) formed 59% of collars, nylon string (15%), fishing net (13%) and six other materials comprising the rest ...
Meeting Document : CCAMLR-VIII/BG/05 : Autor(es): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)
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Selectivity of standard polish commercial trawl codends on Antarctic fishing grounds
= 100 mm, made of double twines with a thickness of 4.2 mm. The studies covered 6 major fish species. 1 ... . It appears from the study that Antarctic icefish and bumphead notothenia are subject to selection ... during trawling, although the effectiveness of this process- especially in the latter case- is not ... tendency to pass through meshes of the codend than Antarctic icefish and bumphead notothenia. 3. The ...
Meeting Document : SC-CAMLR-VII/BG/11 : Autor(es): J. Zaucha (Poland)