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Diving pattern and performance in nonbreeding gentoo penguins (Pygoscelis papua) during winter
patterns, averaging 10-20 m at dawn and dusk and 70-90 m at midday. These results are consistent with the ... were bimodal. Shallow dives (30 m; 55% of total number and 81% of dive time) averaged 74-105 m and 2.7 ... , and deep dives mainly for feeding. Foraging activity of non breeding Gentoo Penguins in winter is ... similar to that of chick-rearing birds. The only major differences are that foraging-trip frequency is 20 ...
Meeting Document : WG-CEMP-92/37 : Автор(ы): T.D. Williams (United Kingdom), A. Kato (Japan), J.P. Croxall (United Kingdom), Y. Naito (Japan), D.R. Briggs, S. Rodwell and T.R. Barton (United Kingdom)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
of un-assessed cohorts and provide for more stable catches between fishing years, while meeting the ... Abstract: A preliminary assessment of yield of Champsocephalus gunnari for Heard Island Plateau ... approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... of short-term yield for 2004 and 2005 using the Mathcad implementation were 259 tonnes and 196 tonnes ...
Meeting Document : WG-FSA-03/32 : Автор(ы): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Krill population trends
concentrated for the last 20 years. There have been suggestions of changes in the distribution and abundance of ... data available for Antarctic krill and will present an indication of the extent and limitations of the ... abundance make detection of long-term trends difficult to detect. This review examines the main types of ...
Meeting Document : CCAMLR-IWC-WS-08/11 : Автор(ы): Tarling, G., Watkins, J., Quetin, L., Reiss, C., Atkinson, A., Ross, R., Pakhomov, E., Kawaguchi, S., Nicol, S., Siegel, V.
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Summary of the toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2017/18
recapture tagged fish remains an issue for tag-based estimations of biomass and we note that improved ... maximum of 20% change in the catch limit from 200 t. Research block 882_2: 240 t based on a one-year ... biological characterisation of the fishery shows a truncation of the right-hand limb of the age distribution ... between 2004 and 2014. No age data are currently available after 2014. We recommend that further ageing of ...
Meeting Document : WG-FSA-18/36 : Автор(ы): S. Mormede and S. Parker
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Results of E.L. Holmberg 1997 fish survey in Subarea 48.3
discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... , including Champsocephalus gunnari at the shelf of the South Georgia Islands. The age and size structure of ... this species in the whole subarea 48.3, is dominated by younger fish (less than two years). Four years ...
Meeting Document : WG-FSA-97/47 : Автор(ы): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season
Georgia for the 17th consecutive winter (2006) and 19th consecutive summer (2006/07) are reported here. A ... was 17, an increase of 112.5% over the previous summer, and the highest since 2001/02. During the ... majority of the sexed individuals in all age classes (43%) compared to males (33%) and the remainder ... unknown. The increase in the number of winter entanglements (41) and animals with severe wounding (20) was ...
Meeting Document : SC-CAMLR-XXVI/BG/17 : Автор(ы): Delegation of the United Kingdom
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CCAMLR-IWC Export Group Report: Primary Productivity and Phytopalnkton
SeaWiFS and MODIS sensors that have been providing data for the last ten years. The characteristics of ... phytoplankton blooms is presented for the major provinces surrounding Antarctica. Some of the published ... information regarding phytoplankton species composition and succession is summarized. Finally, a review of ... ecosystem and biogeochemical models for the Southern Ocean is presented, with a focus on those models that ...
Meeting Document : CCAMLR-IWC-WS-08/13 : Автор(ы): Matear, R., Mongin, M., Lovenduski, N., Strutton, P.
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Demography and population trends of the Atlantic yellow-nosed albatross
two study colonies on Gough Island and Tristan da Cunha for 20 years. Annual variation in the number ... breeders on Gough Island has declined more rapidly, and significantly, at an annual rate of 2.3 ... survival from fledging to age 5 has averaged 31 ± 8%. Apparent adult survival on Tristan da Cunha averaged ... both study populations have trended downward at around 1.2% per year. The number of established ...
Meeting Document : WG-FSA-03/37 : Автор(ы): R. Cuthbert (United Kingdom), P.G. Ryan, J. Cooper (South Africa) and G. Hilton (United Kingdom)
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Aggregation patterns of pelagic predators and their principal prey, Antarctic krill, near South Georgia
differences in foraging strategies. Published in Journal of Animal Ecology (1993) 62, 000-000 Author(s): R.R ... is an explicit consideration of the separation in space between swarms of krill and aggregations of ...
Meeting Document : WG-CEMP-93/13 : Автор(ы): R.R. Veit (USA), E.D. Silverman (USA) and I. Everson (United Kingdom)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2014–15
three years. The strong mode of smaller (90–120 cm TL) toothfish present in the Slope fishery from 2010 ... distributed across the three SSRUs (73% in 88.1H, 22% in 88.1K and 5% in 88.1I). As in recent years, the ... fishery were stable in the North up until 2014, then showed a decrease in mode, particularly for males (to ... similar to that in the early period of the fishery – the reason for this is unclear. There has been a ...
Meeting Document : WG-FSA-15/36 : Автор(ы): K. Large, S.M. Hanchet and S. Mormede (New Zealand)
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