Résultats de la recherche
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On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment
bottom trawl surveys conducted by research and small-tonnage fishery vessels and used for the icefish ... stock assessment was repeatedly raised on the meetings of Working Group on Fish Stock Assessment (WGFSA ... 1). Now, having obtained once again good fishery and scientific data for comparison, it became ... icefish concentrations reaches 40-50 m;- at scientific trawlings the use of trawls with mesh less than 80 ...
Meeting Document : WG-FSA-00/45 : Auteur(s): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)
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Squeezed from both ends: Decline in Antarctic fur seals in the South Shetland Islands driven by both Top–down and Bottom–up processes
. This has led to an under emphasis of the role of bottom-up drivers for controlling fur seal production ... production estimates from 2002-2012 for Cape Shirreff, Livingston Island. Age-specific natality rates are ... poor recruitment and an aging population. However, age-specific natality rate has also declined ... Antarctic bottom-up processes are widely cited for explaining penguin population declines, whereas for ...
Meeting Document : WG-EMM-14/39 : Auteur(s): M.E. Goebel and C.S. Reiss (USA)
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The BROKE-West acoustic krill biomass survey of CCAMLR Division 58.4.2
11 parallel transects between 30° and 80°E. The survey design was presented to WG-EMM for their ... Abstract: This document updates plans by Australia to conduct an acoustic biomass survey for ... is intended to produce a new estimate of B0 for this Division so that a revised precautionary catch ...
Meeting Document : WG-EMM-05/11 : Auteur(s): S. Nicol, S. Kawaguchi, T. Jarvis and T. Pauly (Australia)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2012–13
vessels fishing shallower there in the last four years. There is some evidence for a similar reduction in ... biological aspects and catch of Antarctic toothfish for the period 1997–98 to 2012–13. In 2012–13, all the ... with no trend. A standardised CPUE analysis in the Ross Sea fishery showed an increase to 2008 followed ... mean age in SSRU 88.2H, but the data are very uncertain due to the paucity of otolith readings and it ...
Meeting Document : WG-FSA-13/48 : Auteur(s): S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Brief results of research fishing in Subarea 88.3 in the 2010/11 season
distribution and nutrition of toothfish in subarea 88.3.B-D were collected 240 otolithes for age identification ... Abstract: According to the application that has been applied by Russian Federation in 2010 for ... “Sparta”, with two scientific observers aboard. They deployed 20 sets (trotline) at different depths ... sets had not took place because of complicated ice conditions. The catch was totally analyzed for its ...
Meeting Document : WG-SAM-11/09 : Auteur(s): Delegation of the Russian Federation
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Entanglement of Antarctic fur seals (Arctocephalus gazella) by man made debris at Bird Island, South Georgia, during the 2005 winter and 2005/06 breeding season
Georgia for the sixteenth consecutive winter (2005) and eighteenth consecutive summer (2005/06) are ... reported here. Two entanglements were observed in the winter, a decrease of 60% from the previous year, and ... occurred to an adult female entangled in a plastic packing band causing slight constriction to the ... these entanglements involved juveniles. Of the entanglements where the animal could be sexed, females ...
Meeting Document : SC-CAMLR-XXV/BG/13 : Auteur(s): Delegation of the United Kingdom
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Focusing and testing fisher know-how to solve conservation problems: a common sense approach
of an active fishery. At the scientific level, peer review and publication certify results for the ... , turtles and seabirds, can pose serious threats to specific animal populations causing public outcry and ... seabird mortality in two fisheries: the Puget Sound drift gillnet fishery for sockeye salmon and the ... longline fisheries in Alaska for sablefish and Pacific cod. Although these fisheries are very different ...
Meeting Document : WG-FSA-03/20 : Auteur(s): E.F. Melvin and J.K. Parrish (USA)
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Fish prey of the wandering albatross Diomedea exulans at South Georgia
regurgitations. These provide the first quantitative data for this species and for any albatross. By number of ... (35%), Muraenolepis microps (33 %) and Chaenocephalus acemtus (20%) predominated, with Notothenia ... . It seems unlikely, therefore, that the albatrosses depend. greatly on the fishery for acquisition of ... is unknown. Published in: Polar Biology (1998) 8: 000-000 Author(s): J.P. Croxall, A.W. North and ...
Meeting Document : SC-CAMLR-VII/BG/05 : Auteur(s): J.P. Croxall, A.W. North and P.A. Prince (United Kingdom)
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A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean
when they reach 13-16 cm in length and 4-6 years of age. Males reach maturity at 12-18 cm in length and ... 4-7 years of age. The potential absolute and relative fertility of this species is one of the ... highest for high-latitude Antarctic fish. Spawning occurs in the winter-spring period. P. antarcticum is a ... plankton-eater and is itself an important part of the diet of species higher up the food-chain. P ...
Meeting Document : WG-FSA-92/11 Rev. 1 : Auteur(s): V.V. Gerasimchuk (Ukraine)
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ... Albatross colonies decreased, at an average rate of 1.8% per annum. Although the total Black-browed ... rearing a chick and 75% of those failing to do so returning to breed the next year, 5-10% of both ...
Meeting Document : SC-CAMLR-XII/BG/21 : Auteur(s): Delegation of United Kingdom