Resultados de la búsqueda
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USING GENETIC CONNECTIVITY TO IDENTIFY VULNERABLE MARINE ECOSYSTEMS (VMES) IN ANTARCTICA – THE ISSUE OF SCALE
. At present, the available data is very incomplete, and an understanding of the generality of these ... genetic connectivity in benthic invertebrates at differing spatial scales in Antarctica. This information ... is valuable for understanding the potential resilience of benthic communities under threat from ... bottom fishing. Genetic connectivity allows insight into the realized dispersal of organisms, i.e. the ...
Meeting Document : WS-VME-09/06 : Autor(es): Wilson, N.G.
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Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer
of it. A second front was apparent at the eastern side of the study area and was tentatively ... north of their breeding colonies on Seal Island, but at different distances (18-100 km for fur seals, 20 ... Abstract: Four successive surveys of the pelagic marine environment were conducted over a 100-by ... were collected to describe the thermohaline structure, the distribution of phytoplankton biomass and ...
Meeting Document : WG-CEMP-90/11 : Autor(es): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)
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Proposals on standardization of toothfish resource research
discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... mandatory for all ships participating in the survey. At the same time, methodological aspects of the multi ... Abstract: The methodology of modern trawl surveys carried out the ICES responsibility area is ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ...
Meeting Document : WG-SAM-2019/34 : Autor(es): S. Kasatkina
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Evidence of change to the environment, ecosystem and fishery within Area 48 indicates the need for continued precaution
changes are consistent with global evidence of the ecological effects of environmental change. At the same ... for regularly reviewing whether its management of the krill fishery is suitably precautionary. At the ... was used to set the trigger level. As a consequence of these major risk factors (increased catch ... precaution, should be retained. Author(s): S. Hill and A. Atkinson Title: Evidence of change to the ...
Meeting Document : WG-EMM-2019/29 : Autor(es): S. Hill and A. Atkinson
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Penguin foraging behavior in relation to the distribution of prey
migration pattern, being dispersed in the upper portion of the water column at night and more concentrated ... Abstract: The diving behavior of 7 chinstrap penguins (Pygoscelis antarctica) (N=12,171 dives ... ) was measured concurrently with a hydroacoustic assessment of the vertical distribution and abundance ... of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland ...
Meeting Document : WG-KRILL-93/47 : Autor(es): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)
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Distributions and predator-prey interactions of macaroni penguins, Antarctic fur seals, and Antarctic krill near Bird Island, South Georgia
factored out, we were able to demonstrate an additional influence of Antarctic krill abundance at ... measurement scales between 10 and 100 km for Antarctic fur seals and for macaroni penguins at the scale of 70 ... Abstract: We studied the distributions, abundances and interactions of macaroni penguins Eudyptes ... . Simultaneous surveys of marine birds, Antarctic fur seals and Antarctic krill were conducted along a series of ...
Meeting Document : WG-CEMP-93/12 : Autor(es): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)
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A two-fleet ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
updated to take account of further catch, GLM standardised CPUE and catch-at- length information that has ... Abstract: The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and ... feature which has important implications for the status of the population. The possible extent of cetacean ... of various constant annual catches for the two-fleet model are computed. Although higher sustainable ...
Meeting Document : WG-FSA-05/58 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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Spatial aggregation of harvesting in Subarea 48.1, in particular during the summer and close to the coast
fishing aggregation comprised 3 periods of harvesting; catch rates per hour showed evidence of decline at ... the end of the first two periods, but were increasing at the end of the third period when the Subarea ... period 1999/2000 to 2014/2015. We show that since 2013, both the number of hauls as well as the ... associated level of catch has increased in Subarea 48.1 during the penguin breeding season. We explore in ...
Meeting Document : WG-EMM-16/17 : Autor(es): P. Trathan and S. Hill
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Preliminary results of stock estimation for D. mawsoni using CASAL in the research block 48.6_2
Abstract: A preliminal CASAL model was constructed for D. mawsoni at the research block 48.6_2 ... CPUE fit well. On the otherhands, fit of tag release are relatively low level, especiall in 2016. The ... . The MCMC estimates of B0 (18143.15t) and current biomass (17431.60 t) are much higher than the latest ... seems to converge well, We need futher discussion to improve the CASAL model for D. mawsoni at Subarea ...
Meeting Document : WG-FSA-18/72 : Autor(es): T. Okuda
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Review of activities in monitoring marine debris in the CAMLR Convention Area
originated in 2002 there have been no closed bands found at any of the three sites. The amount of debris in ... colonies of grey-headed albatrosses, wandering albatrosses and black-browed albatrosses at Bird Island ... -fishing items such as plastics, packaging materials and wood remain the most common type of debris items ... decreased significantly since 2011, with the major category of items found being plastics. The amount of ...
Meeting Document : WG-FSA-12/64 : Autor(es): Secretariat