Résultats de la recherche
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Hydrography and acoustic biomass estimates of Antarctic krill (Euphausia superba) near the South Shetland Islands, Antarctica, during January 2000: preliminary results
indicate the water flowing from the Bransfield Strait out to the offshore region around the east of King ... occurred to the north of Smith Island, north and east of King George Island and north and south of Elephant ... Abstract: To estimate the abundance and distribution of Antarctic krill (Euphausia superba) in ... the vicinity of South Shetland Islands (SSI), a hydroacoustic/oceanographic survey was conducted by ...
Meeting Document : WG-EMM-00/52 : Auteur(s): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)
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Atlas of top predators from French Southern Territories in the Southern Indian Ocean
. Indeed, seabirds and seals are considered as good indicators of changes in ecosystems at differential ... mitigation actions and restricted protection of the sole coastal areas, are insufficient, especially for the ... seabirds and marine mammals forage. The first stage of most conservation planning is to identify areas that ... identify areas of high species richness (hotspots), focusing on threat level (endangered species). This ...
Meeting Document : WG-EMM-16/42 : Auteur(s): K. Delord, C. Barbraud, C.-A. Bost, Y. Cherel,C. Guinet and H. Weimerskirch
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Genetic variation among populations of the Antarctic toothfish: evolutionary insights and implications for conservation
fisheries in a manner that will help prevent the loss of unique genetic variation from regional overfishing ... with over 70% of the world’s fish stocks being fully exploited and in many cases overexploited. On top ... of this, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has ... Southern Ocean. The primary target of these new commercial fishing ventures is the large pelagic ...
Meeting Document : WG-FSA-01/69 : Auteur(s): R.W. Parker, K.N. Paige and A.L. DeVries (USA)
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Seasonal and interannual variation in foraging range and habitat of macaroni penguins Eudyptes chrysolophus at South Georgia
Abstract: In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of the macaroni ... penguin Eudyptes chrysolophus at Bird Island, South Georgia, throughout the breeding seasons of 1999 to ... between different stages of the breeding season, between sexes, between years and between individuals ...
Meeting Document : WG-EMM-02/21 Text : Auteur(s): K.E. Barlow and J.P. Croxall (United Kingdom)
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Seasonal and interannual variation in foraging range and habitat of macaroni penguins at South Georgia
Abstract: In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of macaroni ... penguins at Bird Island, South Georgia, throughout the breeding seasons of 1999-2001 using satellite ... tracking. We investigated differences in foraging ranges and characteristics between different stages of ...
Meeting Document : WG-EMM-01/19 : Auteur(s): K.E. Barlow and J.P. Croxall (United Kingdom)
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Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees
Scotia Sea, two areas off east Antarctica, in the frontal zone north of the Amundsen Sea, and a small ... trees to derive relationships between environmental conditions and the distribution of the adult stage ... of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... Southern Ocean Continuous Plankton Recorder survey (87% from East Antarctica) were used to model the ...
Meeting Document : WG-EMM-10/P14 : Auteur(s): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve
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Summary of monitoring and research effort and preliminary results from the 2019 Scotia Sea krill monitoring survey with FV Cabo de Hornos
South Georgia. Small animals were only rarely sampled and almost uniquely on the shelf to the east of ... Association of Responsible Harvesting Companies (ARK) and manned with personnel from the Institute of Marine ... Research to carry out a significant part of the 2019 Scotia Sea large scale krill monitoring. All sections ... of the large scale survey area were visited, and about 80 % of the coverage planned for the vessel ...
Meeting Document : WG-EMM-2019/46 : Auteur(s): G. Skaret, M. Martinussen, G. McCallum, R. Pedersen, J. Rønning, A.L. Donoso, O.A. Bergstad and B.A. Krafft
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
impact on an already highly variable krill biomass, sea-ice loss of 66% has already occurred, and it ... Abstract: The management of Antarctic krill and conservation of its predators requires ... understanding about the compound effects of changing habitats, ecosystem interactions, and fishing practices ... . For Antarctic pack-ice seals, a main group of krill predators, we report the spatial density and krill ...
Meeting Document : WS-MPA-11/24 : Auteur(s): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
only 24% in the female population. The mean daily loss rate of toothfish observed at the hauling point ... sampling method; the known number of coils laid during a night's setting operations provided the ... sampling frame, and the sampling units consisted of lengths of line between marked connecting lines ... target of 60 fish/day. The method was further developed to integrate different, and varying, levels of ...
Meeting Document : WG-FSA-97/41 : Auteur(s): Ashford, J.R., Everson, I.
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Diets of sympatrically breeding Adélie, gentoo and chinstrap penguins from Admiralty Bay, South Shetland Islands, Antarctica, 1981 to 2000
value of food brought to their chick per foraging trip. We discuss the energetic consequences of this ... Abstract: Given the importance and interdependence of diet studies to monitoring work, we ... compared data on the stomach contents and food load masses among three species of Pygoscelis penguins ... dependent on Antarctic krill (Euphausia superba), which accounted for over 93% of each species’ diet by ...
Meeting Document : WG-EMM-03/29 : Auteur(s): W.Z. Trivelpiece (USA), K. Salwicka (Poland) and S.G. Trivelpiece (USA)