Resultados de la búsqueda
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
Paper Title: Precautionary spatial protection to facilitate the scientific study of habitats and ... communities under ice shelves in the context of recent, rapid, regional climate change Abstract / Description ... : Recent rapid climate change is now well documented in the Antarctic, particularly in the Antarctic ... Peninsula region. One of the most evident signs of climate change has been ice-shelf collapse; overall, 87 ... volume of deep water in Pine Island Bay has increased in recent years. Faster basal melting under the ... , 2012) mean that community processes will vary across a range of sites. The Antarctic shelf ecosystems ... collapsing ice shelves and retreating glaciers. However, there has been no resolution about the best way to ... tip of the Antarctic Peninsula. No commercial fishing took place south of Antarctic Sound at the tip ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Autor(es): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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A comparison between the estimated density of krill from an acoustic survey with that obtained by scientific nets on the same survey
krill density estimates were consistantly larger than the net estimates, otherwise no relationship was ... , excluding sites where krill represented less than 90% of the catch. This reduction in variation was thus ... Abstract: This work presents the initial comparative analysis of acoustic and net haul krill ... density estimates for the RMT 8 oblique (0 to 200m depth) trawls conducted during January-March 1996 as ...
Meeting Document : WG-EMM-97/43 : Autor(es): Pauly, T., Higginbottom, I., Hosie, G., de la Mare, W.K., Nicol, S.
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
Paper Title: A first step towards modelling the krill–predator dynamics of the Antarctic ... ecosystem Abstract / Description: The history of human harvests of seals, whales, fish and krill in the ... Antarctic is summarised briefly, and the central role played by krill emphasised. The background to the ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... (2005) report that in the deep parts of the Ross Sea and Prydz Bay, minke whales feed on E ... details in the ‘Discussion’ section). Although no direct inferences can be made, there are several ... other breeding sites such as the South Shetland, Bouvet, Marion, Possession and Heard Islands also ... harvesting of the krill-feeding large baleen whales. Since there is no ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Autor(es): Mori, M. and D.S. Butterworth
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer
Paper Title: Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ... ground of Subarea 48.1 during the 1990/91 austral summer Abstract / Description: Acoustic and net ... sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... of krill were observed. The survey area was divided into four zones: oceanic, slope frontal, neritic ... current along the shelf break, before becoming trapped in Barclay Bay on the northern side of Livingston ... (EUPHAUSIA SUPERBA) IN THE KRILL FISHING GROUND OF SUBAREA 48.1 DURING THE 1990/91 AUSTRAL SUMMER T ... conducted in the krill fishing ground north of the South Shetland Islands from 18 January to 3 February ... 1991. Distinct offshore-inshore heterogeneities in abundance and maturity of krill were observed. The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Autor(es): Ichii, T., H. Ishii and M. Naganobu
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On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing
McMurdo Sound and Terra Nova Bay, in the southwestern Ross Sea. Here we report a methodological approach ... Abstract: While fishery-dependent data represents the preferential way to collect geographically ... spreadtime series of data to study the Antarctic toothfish, it is limited to areas where commercial fishing ... is permitted either by management or vessel operational constraints. The use of Baited Remote ...
Meeting Document : WG-EMM-2019/50 : Autor(es): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands derived from a long-term monitoring program (1983–2006) at Potter Cover
Abstract: The long term monitoring program of demersal fish at inshore sites of the South ... . gibberifrons. No recovery of the stocks of these two fish species was observed, even more than two decades ... twenty four years, and at Harmony Cove, Nelson Island, in the austral summers from 2001 to 2003. The ... decline in trammel net catches of fjord fishes of the species Notothenia rossii and Gobionotothen ...
Meeting Document : WG-FSA-06/25 : Autor(es): E.R. Barrera-Oro and E.R. Marschoff (Argentina)
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Spatial aggregation of harvesting in Subarea 48.1, in particular during the summer and close to the coast
aggregation took place, one in the Bransfield Strait and one in Hughes Bay, on the Danco Coast. The latter ... the Subarea trigger allocation, it is uncertain whether any ecological impact ensued, as there was no ... Abstract: We explore CCAMLR Catch and Effort data from the fishery for Antarctic krill for the ... period 1999/2000 to 2014/2015. We show that since 2013, both the number of hauls as well as the ...
Meeting Document : WG-EMM-16/17 : Autor(es): P. Trathan and S. Hill
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On the power to detect changes using the standard methods for monitoring parameters of predatory species
Paper Title: On the power to detect changes using the standard methods for monitoring parameters ... of predatory species Abstract / Description: The CCAMLR guidelines (CCAMLR, 1989) for analyzing the ... statistical power to detect changes are applied using variance estimates from studies at the South Shetland ... trip duration (C2.0). The other Standard Methods are not evaluated because the power analysis in the ... complexity of some of the designs, there may be no general formula for evaluating power or determining a ... from the study by Trivelpiece et al. (1989) at Admiralty Bay, King George Island (62°10'S, 58°30'W ... sample sizes for detecting changes of 10%, 20% and 30% of the mean values are shown in Table 2. No ... Population Size (A3.1) There were no suitable estimates of variance for the data on breeding population ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Autor(es): Boveng, P. and J.L. Bengtson
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Survey of Antarctic fur seals Arctocephalus gazella in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
were identified, some of which had not previously been reported. The largest pupping sites are at Telmo ... pinniped species observed during the survey are presented. The optimal sites for combined fur seal and ... Abstract: A survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the ... recolonization of rookery sites following 19th Century commercial exploitation. Twelve fur seal pupping sites ...
Meeting Document : SC-CAMLR-VI/BG/18 : Autor(es): J.L. Bengtson, L.M. Ferm (USA), T.J. Härkönen (Sweden), E.G. Schaner and B.S. Stewart (USA)
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Abundance of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
seal pupping sites were identified, some of which had not previously been reported. The largest pupping ... sites were at Telmo Island and Cape Shirreff, Livingston Island, and at the Seal Islands, Elephant ... Abstract: A survey of Antarctic fur seals (Arctocephalus gazella) in the South Shetland Islands ... , Antarctica, during the 1986/87 austral summer indicated that this species is continuing its population ...
Meeting Document : WG-CEMP-90/41 : Autor(es): J.L Bengtson, L.M. Ferm (USA), T.J. Härkönen (Sweden) and B.S. Stewart (USA)