Résultats de la recherche
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Hidroacustics survey around Elephant Island (Subarea 48.1) and South Orkney Islands (Subarea 48.2), austral summer 2016
Abstract: This paper submits the results of the acoustic cruise made in the austral summer of ... , and the presence of fish shoals in 1,500 nautical miles over the shelf and the continental slope (100 ... fish species in the research, besides other finfish species in the area. The mackerel icefish was found ... and semi-pelagic overnight. During the darkness hours the mean determined depth in the schools was ...
Meeting Document : WG-FSA-16/21 : Auteur(s): N.A. Landeros and P.M. Arana
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The population of Mirounga leonina at stranger point (25 de Mayo – King George I.)
Stranger Point (25 de Mayo-King george I.) between 1980-87(excluding 1981). A decline in the population was ... observed in 1980-82 and 1987. The female component was mainly affected in 1 980-82 (r=-0.568) while the ... male component was affected in 1987 (r=-0.463). A possible influence of El Niño Southern Oscillation ... (ENSO) events upon the numerical changes in the studied population is postulated. Author(s): Delegation ...
Meeting Document : SC-CAMLR-VII/BG/33 : Auteur(s): Delegation of Argentina
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A spatial multi-species operating model of the Antarctic Peninsula krill fishery and its impacts on land-breeding
-predator-fishery dynamics is described. This has been developed in response to requests for scientific ... management units (SSMUs) in the Scotia Sea, to reduce the potential impact of fishing on land-based predators ... . SMOM has been revised from the original version presented in Plagányi and Butterworth (2006a) in three ... main ways: 1) Accounting for seasonality; 2) Explicitly modelling fish and whales in addition to ...
Meeting Document : WG-SAM-07/12 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)
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Report of the Steering Committee for the WG-EMM Workshop on Plausible Ecosystem Models for Testing Approaches to Krill Management
“Workshop on plausible ecosystem models for testing approaches to krill management” in preparation for the ... different management approaches to underlying uncertainties in the ecological, fishery, monitoring and ... assessment systems. As agreed at WG-EMM in 2003, intersessional activities have included (i) provision of ... advice on the potential contributions from experts in preparation for the workshop and in participating ...
Meeting Document : WG-EMM-04/25
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Research standards for exploratory fisheries
Abstract: The potential for data poor exploratory fisheries in the CAMLR Convention area to ... in the past are reviewed. Exploratory fisheries and research questions for subareas without currently ... assessed stocks (48.6, 58.4, parts of 88.1 and 88.2) are summarized. The multi-nation, multi-year ... exploratory fishery in the Ross Sea leading to an assessment of D. mawsoni and the fishery for D. eleginoides ...
Meeting Document : WG-SAM-11/15 Rev. 1 : Auteur(s): D. Kinzey (USA)
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Report on a tuna long-lining fishing voyage aboard Southern Venture to observe seabird by-catch problems
birds survived hooking in this study because of the lighter gear and quicker recovery of the long-line ... (about 6 hours between beginning the set and beginning hauling-in). Petrels, particularly Cape Pigeons ... % of bait-takes resulted in a bird being hooked. The mollymawk was hooked at night near full moon, but ... under thick cloud. Most bait-takes occurred in daylight, particularly before dusk. The vessel's ...
Meeting Document : WG-IMALF-94/10 : Auteur(s): M.J. Imber (New Zealand)
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DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT
biological sampling data from a fishing trip. In particular these measures aim to quantify the prevalence of ... assist in assessing which data from a trip should be used in an assessment, and can also guide how these ... is fitted in an assessment model.The data quality measures illustrate sometimes substantial variation ... in the quality of particular data sets from different trips in the Ross Sea Antarctic toothfish ...
Meeting Document : WG-SAM-08/13 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Further calculations of the effects of krill fishing on predators
situation where predator survival rates depend on other factors in addition to krill biomass. This is ... random component in the relationship between krill biomass and availability. An examination of the ... consequences in the case of the blackbrowed albatross suggest that these other factors result in yet lesser ... estimate the levels of krill harvesting which would result in halving the sizes of various krill predator ...
Meeting Document : WG-Krill-94/24 : Auteur(s): D.S. Butterworth and R.B. Thomson (South Africa)
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A critical issue for feedback management – how do we determine the level of functional overlap between krill fishing operations and penguin foraging activity?
Abstract: The spatial distribution of the Antarctic krill fishery in Subareas 48.1 to 48.3 has ... changed over time. The majority of catches in Subarea 48.1 are now taken south of the South Shetland ... Islands, following regional decreases in seasonal sea-ice cover. As the cumulative spatial footprint of ... target the same type types of krill swarms in the same places). In contrast to Subarea 48.1, the fishery ...
Meeting Document : WG-EMM-15/11 : Auteur(s): P.N. Trathan, J.R.D. Silk, S.L. Hill (United Kingdom) and H.J. Lynch (USA)
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Soft-sediment macrozoobenthos from Domain 1 (Antarctica): A preliminary report using community parameters and proxies
Abstract: The present scientific report presents the analysis of a database compilation in order ... biogenic opal and TOC in sites with highest density of benthic organisms. Although, sampling effort can ... play an important role in the results, data suggests that the seafloor around King George Island can be ... considered as a hot-spot of diversity as well as production, and the geochemical proxies are in agree with ...
Meeting Document : SC-CAMLR-XXXVI/BG/10 : Auteur(s): Delegation of Chile