Search results
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
consumption in the West Antarctic Peninsula (WAP)-western Weddell Sea area, the main fishery region; and we ... consider long-term changes in suitable pack-ice habitat, increased fishing pressure and potential krill ... and in the entire area, over 3 million crabeater seals can consume over 12 million tonnes of krill ... krill. High seal densities where found in the small-scale fishery management areas of the WAP, where ...
Meeting Document : WS-MPA-11/24 : Author(s): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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Unusual breeding by seabirds at Marion Island during 1997/98
Abstract: In 1997/98, breeding at subantarctic Marion Island was exceptionally good for five ... Aptenodytes patagonicus chicks surviving to the start of spring in 1997 was considerably more than previously ... recorded, and more southern giant petrels M. giganteus did so than in any other year since 1994. For ... southern giant petrels, reproductive success was higher than in any other year, as was survival of chicks ...
Meeting Document : WG-EMM-03/13 : Author(s): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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Ecosystem modelling for the Antarctic krill fishery
Abstract: Euphausia superba Dana (Antarctic Krill) has been recognized as a key forage species in ... the Antarctic ecosystem. This species serves as prey for many organisms in the ecosystem and has also ... but there is concern that the reduction in krill biomass due tome fishery may have impacts on other ... krill predators such as penguins, seals and whales. In order to evaluate the effects of krill fishing on ...
Meeting Document : WG-EMM-01/65 : Author(s): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)
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30 years of krill fisheries management – challenges remain
patterns, with catches concentrated recently in certain areas such as Subarea 48.1. Based on sea-ice ... reduction projections, concentrated catches in Subarea 48.1 during winter are expected to occur more ... concern since key spawning, recruitment and nursery areas of krill are located in the Southwest Atlantic ... sector, an area that has been warming rapidly, resulting in a reduction in the extent and duration of ...
Meeting Document : CCAMLR-XXX/BG/19 : Author(s): Submitted by ASOC
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A proposal for compiling information, assessments and science that underpin established CCAMLR Marine Protected Areas and provide the basis for ongoing management, science and review: an MPA Report
Abstract: The General Framework for the Establishment of CCAMLR Marine Protected Areas in ... advice in a readily accessible document, which can then form the basis for review, refinement and ... management of the MPAs. This document will also need a name that is easily referred to in the common language ... , to serve this purpose in the same way that Fishery Reports have been developed by the Scientific ...
Meeting Document : WG-EMM-12/49 : Author(s): A. Constable, M. Guest, D. Welsford (Australia), P. Koubbi (France) and L. Weragoda (Australia)
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The Ross Sea cephalopod community: insights from stable isotope analysis
identified as having relatively high importance in the food-web of the Ross Sea. However, information on the ... nitrogen (δ 15 N) and carbon (δ 13 C) were determined in muscle and beak tissue from a range of cephalopod ... isotopic comparisons were made at the level of genus to accommodate the uncertainty in octopod ... of either movement northwards out of the Ross Sea or of coupling with the benthic system. In contrast ...
Meeting Document : WG-EMM-12/55 : Author(s): D.R. Thompson, M.H. Pinkerton, D.W. Stevens (New Zealand), Y. Cherel (France), S.J. Bury (New Zealand)
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Scientific contribution to the 2016 review of Conservation Measure 51-07: Part 1 – rationale, method and data for a risk assessment framework for distributing the krill trigger level
Abstract: At its annual meeting in 2016, WG-EMM recalled its obligation to review and advise on ... discussions on this subject in paragraphs 2.201 to 2.244 of its WG report. WG-EMM recommended that work be ... subdividing the trigger level in CM 51-07 aims to minimise the risk to predator populations, in particular ... distribution of catches across the region. It can be used to compare alternative fishing patterns in order to ...
Meeting Document : WG-FSA-16/47 Rev. 1 : Author(s): A. Constable (on behalf of the e-group on CM 51-07 WG-EMM review)
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CCAMLR ecosystem monitoring and management: future work
Abstract: Harvesting of marine living resources in the Southern Ocean is managed by the ... in the conservation objectives. In the late 1980s, the precautionary approach of CCAMLR was ... developed, incorporating principles of how to use scientific evidence in the decision making process. Even ... ), it takes account of the needs of predators in the assessment of catch limits. The success of this ...
Meeting Document : WG-EMM-12/P05 : Author(s): A.J. Constable
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Infectious diseases of Antarctic penguins: current status and future threats
tourists in the future. Three main areas are likely to be impacted by this increase in use and by ... occurred. The majority of these events have occurred since the year 2000 in regions that will likely be ... valuable as indicators of the status of marine ecosystem health and are an indicator-species used in the ... on these birds. Long-term disease studies would therefore be useful as an adjunct to aid in ...
Meeting Document : WG-EMM-14/53 : Author(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
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Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
selectivity and a plateau section in between for the length range where fish are assumed fully selected. Using ... . In the first stage I estimate a parameter for each 40 mm wide length bin from the fit of a binomial ... generalised linear mixed model (GLMM) to the number of fish in the bin using a logit link function and ... binomial sample size defined as the number of fish in that bin or greater. I combine the data for length ...
Meeting Document : WG-FSA-05/65 : Author(s): S.G. Candy (Australia)