Resultados de la búsqueda
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Beach debris survey Signy Island, South Orkney Islands 1999/2000
size categories. A total of 55 items weighing 10.78kg was collected. The number of items was 35% less ... follows a declining trend since 1996/97. The proportion of polypropylene packaging bands removed was also ... at Signy Island has been showing a declining trend since 1993/94. This is promising. The longevity of ... plastics and other materials with a high resistence to degradation in the marine environment remains a ...
Meeting Document : SC-CAMLR-XIX/BG/06 : Autor(es): Delegation of the United Kingdom
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Catch rates and length composition data of the longline fishery for Dissostichus eleginoides at the Prince Edward Islands: 1996/97
eleginoides made in the vicinity of the Prince Edward Islands, a South African territory in the Indian Ocean ... interest in the fishery leading to a great influx of vessels to the area. By the end of 1996 up to 40 ... around 0.7 kg per hook at the end of 1996 a steady decline in CPUE to less than 0.4 kg per hook towards ... Georgia longline fisheries. A decrease in fish sizes was also noted since the inception of the fishery ...
Meeting Document : SC-CAMLR-XVI/BG/28 : Autor(es): Delegation of South Africa
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Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters
Abstract: The use of allozymes as a tool in stock structure analysis was examined in the ... commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... of icefish samples (N = 18 to 42 per sample) indicated stock separation on a local scale. Genetic ... index, FIS) detected at most loci which were due mainly to heterozygote deficiencies. There was a ...
Meeting Document : WG-FSA-90/10 : Autor(es): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)
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Infectious diseases of Antarctic penguins: current status and future threats
Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ... increase over the last 50 years. However, issues of data not being published and a lack of formal risk ... System, means that our understanding is still patchy. A feather loss condition of unknown etiology ... requires urgent further investigation. Also of concern, is that a number of mass mortality events have ...
Meeting Document : WG-EMM-14/53 : Autor(es): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
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Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data
Abstract: We present a novel index of Antarctic krill biomass in CCAMLR subareas 48.1 to 48.4 ... also suggest that exploitation rates are low and that there is no evidence of a systematic change in ... the krill stock. This evidence suggests that the trigger level is a highly precautionary operational ... assessment of the krill stock, at scales relevant to the Commission’s conservation objectives, is a ...
Meeting Document : WG-EMM-15/28 : Autor(es): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)
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Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea
Abstract: Climate change is a threat to marine ecosystems and the services they provide, and ... reducing fishing pressure is one option for mitigating the overall consequences for marine biota. We used a ... effects of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline ... in the mass of individual krill. Projections also suggest a 25% chance that krill biomass will fall ...
Meeting Document : WG-EMM-18/P02 : Autor(es): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters
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Informing the Working Group on Fish Stock Assessment about the revisions of the WSMPA proposal
Abstract: Following the submission of a first draft Conservation Measure for establishing a MPA ... and the EU has submitted a revised CM proposal to CCAMLR 2018. This document is based on similar ... into account the outcome of the CCAMLR Workshop for the Development of a Dissostichus mawsoni ... operations on the ecosystems and food webs, of which this species is a part. Author(s): S. Hain, K. Teschke ...
Meeting Document : WG-FSA-18/08 Rev. 1 : Autor(es): S. Hain, K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA project team
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Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas
Abstract: Antarctic krill, Euphausia superba, have a circumpolar distribution but are ... concentrated within the south-west Atlantic sector, where they support a unique food web and a commercial ... ), based on a compilation of all available post 1970s data. Using these maps, we then examined firstly ... , A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor Title: Habitat ...
Meeting Document : WG-EMM-2019/20 : Autor(es): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor
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Update from the Bioregionalisation Workshop Steering Committee on progress towards the 2007 Workshop on Bioregionalisation
Abstract: A Bioregionalisation Workshop Steering Committee was formally convened in August, 2006 ... are identified, as well as issues to be discussed. The paper is intended to provide background and a ... framework for discussion at the 2006 meeting of the CCAMLR Scientific Committee and the Commission. A list ...
Meeting Document : SC-CAMLR-XXV/BG/24
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Catch Uncertainty in Krill Fisheries
Abstract: Catch uncertainty is a component of uncertainty that is not routinely considered by ... CCAMLR. However, given the currently reported variability in conversion factors for krill, a nominal ... reported catch of 600 000t could actually represent a catch in ‘green weight’ of 2.5 million tonnes ...
Meeting Document : WG-EMM-08/46 : Autor(es): Secretariat