Résultats de la recherche
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Population dynamics of the wandering albatross Diomedea exulans at Marion Island: long-line fishing and environmental influences
breeding population of the Vulnerable wandering albatross Diomedea exulans. The numbers of birds breeding ... result of both real changes in the size of the population and changes in the proportion of the population ... influenced by both environmental and anthropogenic effects are described. The proportion of first-time ... survival rates of breeding adults were negatively correlated with Japanese pelagic longline fishing effort ...
Meeting Document : WG-EMM-03/11 : Auteur(s): D.C. Nel, F. Taylor, P.G. Ryan and J. Cooper (South Africa)
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Peculiarities of icefish Champsocephalus gunnari (Channichthyidae) distribution in South Georgia area during the surveys made by STM Atlantida in 2000 and 2002
Abstract: Reasons of differences in icefish distribution and biomass assessment during two ... surveys made by STM “Atlantida” are revealed. Availability of large icefish concentrations in 2000 in the ... northwest shelf area in 10-100m layer resulted in formation of adult fish aggregations in water column. The ... the bottom even in dark hours of the day. During the two surveys, fry and immature fish occurred in ...
Meeting Document : WG-FSA-03/55 : Auteur(s): Zh.A. Frolkina, S.M. Kasatkina and N.N. Zhigalova (Russia)
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Atlas of coastal sea ice in eastern Antarctica
Abstract: The attached document provides information on an atlas of sea ice produced by the n. It ... vicinity of the CCAMLR Ecosystem Monitoring Program sites at Bechervaise Island near the Australian Station ... of Mawson, at Edmonson Point in the vicinity of the Italian Station of Terra Nova Bay and at Ross ... Island. The atlas is scheduled for release in August 2002. Here we provide a sample only of the contents ...
Meeting Document : WG-EMM-02/54 : Auteur(s): K. Michael, K. Hill, K. Kerry and H. Brolsma (Australia)
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Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences
Abstract: The Prince Edward Islands support the largest breeding population of the vulnerable ... Wandering Albatross Diomedea exulans. The number of birds breeding in this population has fluctuated over ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ...
Meeting Document : WG-FSA-02/16 : Auteur(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)
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Adélie penguin population change in the pacific sector of Antarctica: relation to sea-ice extent and the Antarctic Circumpolar Current
Abstract: One of the longest continuing data sets involving a marine organism in the Antarctic is ... that of annual estimates of breeding population size of Adélie penguins Pygoscelis adeliae at colonies ... on Ross Island, Ross Sea, 1959 to 1997. The sizes of these colonies have displayed significant ... physical environmental factors during that part of the record with comparable sea-ice satellite imagery ...
Meeting Document : WG-EMM-01/23 : Auteur(s): P.R. Wilson (New Zealand), D.G. Ainley, N. Nur, S.S. Jacobs (USA), K.J. Barton (New Zealand), G. Ballard and J.C. Comiso (USA)
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The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991–1995
Abstract: Long term fisheries observer data were used to analyse the influence of a range of ... environmental variables and mitigation measures upon catch rates of seabirds in the Japanese pelagic longline ... were set during summer, in southern areas of the zone, and during daylight hours. However ... , interpretation of changes in catch rates resulting from the use of mitigation measures or from weather effects ...
Meeting Document : WG-FSA-98/32 : Auteur(s): N. Brothers, R. Gales and T. Reid (Australia)
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IMPACTS OF CLIMATE CHANGE ON ANTARCTIC MARINE ECOSYSTEMS: A CALL FOR ACTION
decade, but little in the way of policy or operational change has resulted at CCAMLR. Over the past 50 ... years major alterations of the ecological workings of the Southern Ocean have been underway. These ... Western Antarctic Peninsula has warmed more than four times faster than the average rate of Earth’s ... the distribution and abundance of those species whose natural history patterns are closely tied to sea ...
Meeting Document : CCAMLR-XXVII/BG/27 : Auteur(s): Submitted by ASOC
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TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA
Abstract: We present information to investigate the significance of Antarctic toothfish as a prey ... item for Weddell seals in the Ross Sea. • We summarise the life history of Weddell seals to provide an ... overview of their use of the Ross Sea. As consumption of prey by Weddell seals (both the amount and type of ... prey) will vary between different life history stages at different times of the year in different areas ...
Meeting Document : WG-EMM-08/43 : Auteur(s): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)
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AN ECOSYSTEM-BASED MANAGEMENT PROCEDURE FOR KRILL FISHERIES: A METHOD FOR DETERMINING SPATIALLY-STRUCTURED CATCH LIMITS TO MANAGE RISK OF SIGNIFICANT LOCALISED FISHERIES IMPACTS ON PREDATORS.
single-species assessment of yield, and a method for implementing the procedure. The decision rule for ... setting catch limits for a given harvest strategy has a straight forward expression of the target ... of predator-prey dynamics beyond that evident in the data. It is a natural extension of the current ... precautionary approach of CCAMLR for krill and can utilise existing datasets, including B0 surveys, local scale ...
Meeting Document : WG-SAM-08/16 : Auteur(s): A. Constable and S. Candy (Australia)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97
Abstract: The results of the first annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 1996/97 season. Neck collars of man-made debris were ... seen on 12 seals, all of which were juvenile males. Five entangled seals were observed in an area ... around Signy Island Research Station where approximately 1.3% of the fur seal population come ashore. It ...
Meeting Document : SC-CAMLR-XVI/BG/07 : Auteur(s): Delegation of the United Kingdom