Résultats de la recherche
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Diets of Antarctic toothfish estimated from fatty acids and stable isotopes
Antarctic toothfish, by-catch and their stomach contents were collected for the past five years in the eight ... locations of he Antarctic Waters. We investigated ontogenetic and spatial variability in resource ... utilization of Antarctic toothfish and distribution patterns of FA profiles in various organisms because of ... the particular importance of accumulation of lipid deposits in their tissue. Toothfish trophic niche ...
Meeting Document : WG-FSA-17/12 : Auteur(s): C.-K. Kang, S.-G. Choi, J. Lee, J. Lee and D. An
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INTERANNUAL SPATIAL VARIABILITY OF KRILL (EUPHAUSIA SUPERBA) INFLUENCES SEABIRD FORAGING BEHAVIOR NEAR ELEPHANT ISLAND, ANTARCTICA
foraging distributions of seabirds to understand how variation in krill influences patch dynamics between ... krill and birds. At sea surveys were conducted near Elephant Island, Antarctica for three years (2004 ...
Meeting Document : WG-EMM-08/P12 : Auteur(s): J.A. Santora, C.S. Reiss, A.M. Cossio and R.R. Veit
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Adélie penguin colony size predicts south polar skua abundance on Ross Island, Antarctica
carrion. We estimated skua abundance at Adélie penguin colonies on Ross Island in two consecutive years ... Abstract: Top predators are useful ecological indicators of changes in marine prey stocks and ... other ecosystem drivers. In the Ross Sea region, most south polar skuas (Catharacta maccormicki) nest ... areas of varying size within the three main Ross Island colonies. We considered skua populations in ice ...
Meeting Document : WG-EMM-14/55 : Auteur(s): D.J. Wilson, P.O’B. Lyver (New Zealand), A.L. Whitehead (Australia), T.C. Greene (New Zealand), K. Dugger (USA), B.J. Karl, J.R.F. Barringer, R. McGarry (New Zealand), A.M. Pollard and D.G. Ainley (USA)
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Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal
including one individual in two separate years. Whilst the sample size is small the results represent an ... advance in our limited knowledge of leopard seals. We show the longest periods of tracking of leopard ... island of South Georgia. It appears that these tracked animals migrate in a directed manner towards Bird ... , similar to those observed in other predators in the region including the krill fishery. Analysis of ...
Meeting Document : WG-EMM-18/P09 : Auteur(s): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada
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DEPREDATION AROUND SOUTH GEORGIA AND THE IMPLICATIONS ON STOCK ASSESSMENT OF D. ELEGINOIDES
both in season and between years. Hydrophones deployed on longlines recorded both vocalisations of ... examined and varied from 0.9% to 5.8% of the TAC per year over the time period. Additional work was also ... conducted which looked at the behaviour of cetaceans around fishing vessels in the area. To aid ...
Meeting Document : WG-FSA-09/16 : Auteur(s): J. Moir Clark, D.A. Agnew, P. McCarthy and M. Unwin (United Kingdom)
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Longline sink rates of an autoline vessel, and notes on seabird interactions
. Further trials were conducted with weights added to the longline as in normal fishing operations. A robust ... , direct observations at sea indicated that weights did have an effect on line sink for 20–40 m either side ... observed interacting with the vessel. The seabird community constantly changed in size, species composition ...
Meeting Document : WG-FSA-01/44 : Auteur(s): N.W.McL. Smith (New Zealand)
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Does the current South Georgia groundfish survey accurately estimate the standing stock of mackerel icefish?
Abstract: In subarea 48.3 mackerel icefish (Champsocephalus gunnari) are currently assessed by a ... the icefish biomass is in midwater and therefore missed by the bottom trawl survey. In January 2004, a ... short acoustic survey on FPRV Dorada showed that mackerel icefish, of all age classes, spend time in ...
Meeting Document : WG-FSA-SAM-04/20 : Auteur(s): Agnew, D., Goss, C., Xavier, J., Belchier, M., Collins, M., Reid, K.
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MODELING PREDATION BY TRANSIENT LEOPARD SEALS FOR AN ECOSYSTEM-BASED MANAGEMENT OF SOUTHERN OCEAN FISHERIES
species and their dependent predators. This requires modelling the uncertainty in such processes as ... choice and consumption reflected seasonal changes in leopard seal population size and structure, size ... energy, IE), but ca. 12–16% of the local gentoo penguin population (20% IE). Antarctic krill (28% IE ... is important to integrate the predator needs as natural mortality of its prey in models to set prey ...
Meeting Document : WG-EMM-09/P08 : Auteur(s): J. Forcada, D. Malone, J.A. Royle and I.J. Staniland
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Relevamiento de desechos marinos en la costa septentrional de la Base Científica Antártica Artigas (BCAA) en la Isla Rey Jorge/25 de Mayo – temporada 2002/03
Abstract: El Uruguay ha desarrollado un Programa de Relevamiento de Desechos Marinos en las áreas costeras próximas a sus instalaciones en el Área del Tratado Antártico y por tanto en el Área de la Convención correspondiente a la Subárea Estadística 48.1, donde se encuentra la B.C.A.A. (Base
Meeting Document : SC-CAMLR-XXII/BG/20 : Auteur(s): Delegación de Uruguay
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Progress toward an agreement on the conservation of albatrosses and petrels
Author(s): Delegation of Australia Title: Progress toward an agreement on the conservation of albatrosses and petrels Approval: Approved Secretariat Workflow Status: Content Approved Document Release Consent: Yes Delegation responsibility for releasing documents: CCAMLR Secretariat
Meeting Document : SC-CAMLR-XXI/BG/20 : Auteur(s): Delegation of Australia