Resultados de la búsqueda
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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 : Autor(es): 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 : Autor(es): 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 : Autor(es): G. Skaret, M. Martinussen, G. McCallum, R. Pedersen, J. Rønning, A.L. Donoso, O.A. Bergstad and B.A. Krafft
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By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
Paper Title: By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in ... of scientific observations conducted aboard the Japanese krill fishing vessel Chiyo Maru No. 2 ... presents a brief re-analysis of the by-catch data collected on board the Chiyo Maru No. 2; means and ... variances are calculated from the delta distribution. In numbers, an average of about 14 fish were caught ... Chiyo Maru No. 2's by-catch was in the middle of the range of previously-reported species numbers, but ... . Preliminary estimation of abundance of juvenile Nototheniidae and Channichthyidae within krill swarms east ... CCAMLR Science, Vol. 3 (1996): 111-123 BY-CATCH OF ... , San Diego CA 92038, USA Abstract Armstrong (1995) presented a final report of scientific ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Autor(es): Watters, G
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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 : Autor(es): 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 : Autor(es): 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 : Autor(es): W.Z. Trivelpiece (USA), K. Salwicka (Poland) and S.G. Trivelpiece (USA)
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Surface areas of seabed within the 500 m isobath regions within the South Shetland Islands (Subarea 48.1)
Paper Title: Surface areas of seabed within the 500 m isobath regions within the South Shetland ... Islands (Subarea 48.1) Abstract / Description: Bathymetric maps of two major areas within the South ... Elephant Island. From the integrated datasets, areas of seabed within the 500 m isobath for six levels of ... calculated based on planar and interpolated surface area of seabed incorporating seafloor slope. Differences ... SURFACE AREAS OF SEABED WITHIN THE 500 M ISOBATH FOR REGIONS WITHIN THE SOUTH SHETLAND ISLANDS (SUBAREA ... . 92038, USA Abstract Bathymetric maps of two major areas within the South Shetland Islands were ... integrated datasets, areas of seabed within the 500 m isobath for six levels of depth strata (0-50 m, 51-100 ... planar and interpolated surface area of seabed incorporating seafloor slope. Differences in calculated ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 133–140 : Autor(es): Jones, C.D., S.N. Sexton and R.E. Cosgrove III
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Activity, seasonal site fidelity, and movements of Type-C killer whales between the Ross Sea, Antarctica and New Zealand
-annually returning to areas of ecological significance, including New Zealand waters north and east of East ... between the Ross Sea and New Zealand, but also emphasises the urgent need to re-evaluate the profile of ... , TCKW have been identified as one of the two top predator species in the Ross Sea most likely to be ... TCKW may use small-scale areas in this highly productive ecosystem intensely for a period of days to ...
Meeting Document : WG-EMM-15/52 : Autor(es): R. Eisert (New Zealand), G. Lauriano, S. Panigada (Italy), E.N. Ovsyanikova, I.N. Visser, P.H. Ensor, R.J.C. Currey, B.R. Sharp and M.H. Pinkerton (New Zealand)
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Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen
Paper Title: Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught ... off Kerguelen Abstract / Description: Ages of Patagonian toothfish (Dissostichus eleginoides) caught ... estimated to be –0.6 years and residual variance 2.9. Age distributions of toothfish caught by two vessels ... mortality (Z), two methods were used: that of Royce (1972), in which the estimate of the number of cohorts ... . Chapman, D.G. and D.S. Robson. 1960. The analysis of a catch curve. Biometrics, 16 (3): 354–368. Everson ... (2005): 29–41 29 AGE, GROWTH AND MORTALITY OF PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) CAUGHT ... Fisheries Ecology Old Dominion University Norfolk, VA 23529, USA Abstract Ages of Patagonian toothfi sh ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Autor(es): Ashford, J., G. Duhamel, C. Jones and S. Bobko