Resultados de la búsqueda
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... can derive meaningful indices of relative performance of groups of fishing effort (e.g. vessel, trip ... detection rate of recaptured fish. This method was applied to the tagging data in CCAMLR Subareas 88.1 and ... 88.2. Results show that the indices developed can provide evidence of significant differences in ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Autor(es): S. Mormede and A. Dunn (New Zealand)
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Krill distribution related to water structure and dynamics on the South Georgia shelf in January 2000 (AtlantNIRO-BAS Core Programme 1999/2000)
apparent. In the western box krill density was nearly 0.2 glm3 and in the eastern box was 1.8- 4.7 glm3 ... distribution were carried out in two standard boxes on the shelf and slope northwest and northeast of South ... Georgia. Eight hydroacoustic transects with hydrographic stations and RMT8+1 trawls were carried out in ... • Juvenile krill of 30-36 mm length were observed in the shelf zone and larger specimens, including spawning ...
Meeting Document : WG-EMM-00/51 : Autor(es): V.A. Sushin (Russia), P.P. Chernyshkov (Russia), F.F. Litvinov (Russia), J.L. Watkins (United Kingdom) and A.S. Brierley (United Kingdom)
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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 ... 2001 using satellite tracking. We investigated differences in foraging ranges and characteristics ... (male average = 572 km; female average = 376 km) in a north-westerly direction towards the Maurice Ewing ...
Meeting Document : WG-EMM-02/21 Text : Autor(es): 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 ... tracking. We investigated differences in foraging ranges and characteristics between different stages of ... ; female average = 376 km) in a north-westerly direction towards the Maurice Ewing bank; some individuals ...
Meeting Document : WG-EMM-01/19 : Autor(es): K.E. Barlow and J.P. Croxall (United Kingdom)
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Preliminary results of the third CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2014
the other strata, in particular close to Ross Island in the south and in the north-eastern side of ... first survey was completed in February 2012 (), and the second survey was completed in February 2013 ... (Parker et al. 2013). In this paper we provide preliminary results of the third survey in the time series ... toothfish in the southern Ross Sea (strata A–C) using standardised gear in a standardised manner; and (ii ...
Meeting Document : WG-SAM-14/24 : Autor(es): S. Mormede, S.J. Parker, S.M. Hanchet, A. Dunn (New Zealand) and S. Gregory (United Kingdom)
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Distribution and abundance of Antarctic krill in the vicinity of Elephant Island during the 1994 austral summer
from four acoustic surveys conducted in the vicinity of Elephant Island, Antarctica, from mid-January ... Island and the eastern end of King George Island; the second and third surveys covered approximately 2100 ... biomass in the same survey portion was estimated to be 359 X 106 t. During the second and third surveys ... high densities of krill were mapped in the shoal waters to the north of Elephant Island; biomasses were ...
Meeting Document : WG-Joint-94/09 : Autor(es): R.P. Hewitt and D.A. Demer (USA)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1999–2000
sanctioned longline fishing for Patagonian toothfish Dissostichus eleginoides in the Exclusive Economic Zone ... sanctioned fishing trips. Fishing effort was 7.4 million hooks, a 45% increase on the number of hooks set in ... aequinoctialis predominated (92.2%), followed by Eastern Yellow-nosed Mollymawks Thalassarche [chlororhynchos ... 0.036 birds per 1 000 hooks, more than double that reported in 1998/99, but still considerably less than ...
Meeting Document : WG-FSA-00/30 : Autor(es): P. Ryan and B. Watkins (South Africa)
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The winter distribution of Adélie and chinstrap penguins from two breeding colonies in the South Shetland Islands of Antarctica
signal was lost just to the west of the South Sandwich Island group in late July, approximately 1300 km ... five chinstrap and six Adélie penguins from two breeding colonies in the South Shetland Islands ... penguins from a breeding site in Admiralty Bay, King George Island (62° 10’ S, 58° 30’ W) were instrumented ... with satellite tags in early March 2000, following their annual molt; similarly, two birds were tagged ...
Meeting Document : WG-EMM-02/55 : Autor(es): S.G. Trivelpiece and W.Z. Trivelpiece (USA)
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Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018
in the eastern part, where unusually high concentrations of Pennatulacea (Sea pens) where reported in ... eleginoides) conducted by Japan and France in Division 58.4.4b (WG-SAM-2019/08). We analyzed bycatch ... composition in number and biomass during the period 2008-2018 to investigate the inter-annual variations in ... gear, bathymetry and locations (b_1 versus b_2) on bycatch composition and biomass. As shown in others ...
Meeting Document : WG-FSA-2019/53 : Autor(es): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier
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Changes in the foraging range of Adélie penguins as the breeding season progresses
Abstract: 1. This paper describes temporal changes in foraging range throughout the breeding ... season of Adélie penguins nesting at Béchervaise Island on the Mawson coast of Eastern Antarctica. A ... with the changing requirements of adults and chicks. However, increases in range as the chick rearing ... the foraging ranges demonstrated for the Mawson coast onto other Adélie penguin colonies in the Prydz ...
Meeting Document : WG-EMM-04/57 : Autor(es): J. Clarke and L. Emmerson (Australia)