Resultados de la búsqueda
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Relationships between oceanographic environment and distribution of krill and baleen whales in the Ross Sea and adjacent waters, Antarctica in 2004/05
geographical distribution of the main biological prey and predator populations such as krill including other ... below are MTEM-200 values).- Antarctic krill mainly distributed in the waters between 0 to-1℃ of MTEM ... extended in the waters less than-1℃ of the Shelf Water (SW) zone. Ice krill distributed in the waters ... a high density around 0℃ near the Southern Boundary of ACC. Antarctic minke whales mainly ...
Meeting Document : WG-EMM-08/31 : Autor(es): M. Naganobu, S. Nishiwaki, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, Y. Watanabe, T. Yabuki, Y. Yoda, Y. Noiri, M. Kuga, K. Yoshikawa, N. Kokubun, H. Murase, K. Matsuoka, T. Iwami and K. Ito (Japan)
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
at 200 and 120 kHz (Sv200-120). We considered the performance of 4 different acoustic target ... model derived target id window only identified krill in 6 of the 16 nets correctly. The ‘2 freq 2-16 ... ’ algorithm attributed more than 90 % of the total backscatter to krill in all but 1 aggregation with the ‘2 ... freq model’ using a smaller window but still attributing more than 90 % of the total backscatter to ...
Meeting Document : WG-EMM-08/54 : Autor(es): J. Watkins and S. Fielding (United Kingdom)
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LIFE HISTORY BUFFERING IN ANTARCTIC MAMMALS AND BIRDS AGAINST CHANGING PATTERNS OF CLIMATE AND ENVIRONMENTAL VARIATION
Abstract: The consequences of warming for Antarctic long-lived organisms depend on their ability ... to survive changing patterns of climate and environmental variation. Among birds and mammals of ... and Weddell seals, we found strong support for selection of life history traits that reduce ... survival of adults and in their propensity to breed annually, which are the vital rates that influence most ...
Meeting Document : WG-EMM-08/P05 : Autor(es): J. Forcada, P.N. Trathan and E.J. Murphy
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Recent population estimates and trends in numbers of albatrosses and giant petrels breeding at the sub-Antarctic Prince Edward Islands
Abstract: The second mid-summer survey of surface-nesting seabirds at the Prince Edward Island ... Edward Island, mirroring a decrease of roughly 2% per year at Marion Island from 1998 to 2005, a decline ... that has since reversed. Numbers of grey-headed albatrosses Thalassarche chrysostoma on Marion Island ... (3% per year). The estimate of Indian yellow-nosed albatrosses T. carteri at Prince Edward Island was ...
Meeting Document : WG-EMM-10/P04 : Autor(es): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford
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Warming effects in the Western Antarctic Peninsula Ecosystem: the role of population dynamic models for explaining and predicting penguin trends
developed simple conceptual models for decipher the role of climate and krill fluctuations on the population ... dynamics of these three pygoscelid penguin species inhabiting the Antarctic Peninsula region. Our results ... suggest that the relevant processes underlying the population dynamics of these penguin species at King ... George Island (Antarctic Peninsula) are intra-specific competition and the combined effects of krill ...
Meeting Document : WG-EMM-12/18 : Autor(es): M. Lima and S.A. Estay (Chile)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2014–15
Abstract: This report summarises the timing, depth, and location of fishing effort together with ... biological characteristics of the catch of Antarctic toothfish up to and including the 2015 season. In 2015 ... not to be indexing abundance. Length frequency distributions of Antarctic toothfish in the Ross Sea ... three years. The strong mode of smaller (90–120 cm TL) toothfish present in the Slope fishery from 2010 ...
Meeting Document : WG-FSA-15/36 : Autor(es): K. Large, S.M. Hanchet and S. Mormede (New Zealand)
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Sea ice characterisation of the proposed Ross Sea region Marine Protected Area Special Research Zone
Research Zone (SRZ) along with three other General Protection Areas. This paper presents an analysis of sea ... ice within and surrounding the boundaries of the proposed SRZ over the past 16 years, the impact it ... achieving the objectives of the proposed SRZ in the future. Based on historic satellite-derived sea ice ... in about half of the fishing seasons. Over the past 16 seasons, the SRZ was accessible to fishing in ...
Meeting Document : SC-CAMLR-XXXIV/BG/31 : Autor(es): S. Parker, S. Hoyle, S. Hanchet and R.J.C. Currey (New Zealand)
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2017–2027
research program in the frame of the research and monitoring associated with the RSRMPA. Russian research ... and stock structure of Dissostichus species in the eastern part of the Ross Sea over shelf and ... focus. The study area covered by proposed investigations is located in the Special Research Zone of the ... Research Zone during 2017-2027 or the first reference period for existence of the RSRMPA. This program ...
Meeting Document : WG-SAM-17/21 : Autor(es): Delegation of the Russian Federation
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Depth and temperature preferences of Antarctica toothfish (Dissostichus mawsoni) from a pilot popup satellite archival tag study in the Mawson Sea
depth range of 326 to 1824 m and a temperature range of-1.95 to 0.7°C. Through available depth and ... appeared to have remained in the Mawson Sea area for the majority of time at liberty. The recaptured ... warranted to observe similar ascents in other individuals, and be analyzed in the greater context of ... reproductive ecology of Antarctic toothfish. To this end, a tagging configuration is proposed to target logging ...
Meeting Document : WG-FSA-18/22 : Autor(es): C.H. Lam, S.-G. Choi, E. Kim, S. Chung, J. Lee and D.H. An
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Summary of the toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2018/19
characterisation of the fishery showed a truncation of the right-hand limb of the age distribution between 2004 and ... 2014. Few age data are currently available after 2014. We recommend that further ageing of toothfish in ... -year Chapman estimates and allowing a maximum of 20% in the catch limit for 88.2H and research block ... 882_2 are: 882H: 240 t catch and allowing a maximum of 20% change in the catch limit from 200 t ...
Meeting Document : WG-FSA-2019/12 : Autor(es): J. Devine and S. Parker