Search results
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Incorporating information on the distribution of the krill fishery into Domain 1 MPA planning – report of the CCAMLR scholarship recipient
Abstract: This study aims to improve understanding of spatial and temporal variability in krill ... fishing activity in MPA Planning Domain 1, towards the development of a ‘cost layer’ and additional ... information for use in Marxan analyses and subsequent MPA planning activities. We provide further detail on ... the location of areas of high concentration of krill catches or ‘hotspots’ in current fishing ...
Meeting Document : WG-EMM-17/22 : Author(s): A. Capurro, M. Santos and S. Grant
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Integrating CPUE with the GY model: examination of the effects of shortening the CPUE series and incorporating elements of uncertainty into the D. eleginoides assessment of Subarea 48.3
whether a shorter CPUE time-series would be preferable for use in its annual assessments. (WG-FSA-03/40 ... 2003, paragraph 2.27). This paper explores some of the consequences of shortening the dataset in the ... application of the usual assessment method. In addition we investigate the incorporation of uncertainty in the ... CPUE series. Truncation of the standardised series from WG-FSA 2002 results in only slight modification ...
Meeting Document : WG-FSA-03/96 : Author(s): I.R. Ball, S. Candy and A.J. Constable (Australia)
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Report on the CCAMLR marine debris monitoring program
items found in beach surveys. The fishing items found were mostly from longline and trawl origins ... . Plastic packaging bands continue to be found in beach surveys, with an unfortunate increase in closed ... bands found at King George Island. Overall, the amount of debris in colonies of grey-headed albatrosses ... in wandering albatross colonies remains the most frequent debris item found in each season. The ...
Meeting Document : WG-FSA-14/68 : Author(s): Secretariat
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Linking population trends of Antarctic shag (Phalacrocorax bransfieldensis) and fish at Nelson Island, South Shetland Islands (Antarctica)
in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies on ... finfish fishery has ever existed. Integral study of these parameters there showed that, in Antarctic shags ... , respectively, with both factors adversely affecting the population trends of this bird. In line with these ... premises, the declining trend observed in shag colonies on the South Shetland Islands appears to have been ...
Meeting Document : WG-EMM-16/P09 : Author(s): R. Casaux and E. Barrera-Oro
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Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
parameters and recruitment of Patagonian toothfish, Dissostichus eleginoides, in the Heard Island region. A ... new survey of the Heard Island Plateau was undertaken in May- June 2001, providing the sixth survey ... -estimated in the past. An estimate of natural mortality indicates that mortality of young fish, ages 3-8 ... , may be much greater than older fish. This may need to be taken account of in the assessment process ...
Meeting Document : WG-FSA-01/73 : Author(s): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)
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Variation or reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implication for Southern Ocean monitoring studies
Orkney Islands) are summarised and reviewed. Breeding success of the Wandering Albatross, which breeds in ... / significantly. The other species at South Georgia, which breed in summer and for which krill forms a significant ... proportion of their diet, have shown major fluctuations in some or all of: breeding population size, breeding ... particularly poor reproductive performance by almost all species. Difficulties in provisioning offspring were ...
Meeting Document : WG-CEMP-87/13 : Author(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
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Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management
to successful ecosystem-based management of krill fishery in the region. Krill acoustic-density data ... from surveys conducted in the early, middle and late period of the summers of 2001 to 2005, together ... krill population dynamics model to evaluate potential mechanisms behind the observed changes in krill ... biomass. Krill abundance was highest during the middle of the summer in 3 years and in the late period in ...
Meeting Document : WG-EMM-10/P08 : Author(s): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein
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Conveners’ Report of the Joint CEP/SC-CAMLR Workshop on Climate Change and Monitoring
Abstract: The Joint CEP/SC-CAMLR Workshop on Climate Change and Monitoring was held in Punta ... Polly Penhale), and is provided in full below. The report was discussed at the Committee for ... Environmental Protection (CEP XIX) in Santiago, Chile (23-27 May 2016) (CEP XIX Report, paragraphs 43 to 56 ... ), and at WG-EMM-16 in Bologna, Italy (WG-EMM-16 Report, paragraphs 6.8 to 6.28). The CEP agreed that the ...
Meeting Document : SC-CAMLR-XXXV/07 : Author(s): Delegations of the United Kingdom and the USA
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
Abstract: There is increasing interest in using higher-trophic level predators as ecosystem ... supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ... environmental variability and fishing pressure on krill availability at scales relevant to predators. In this ...
Meeting Document : WG-EMM-18/P14 : Author(s): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
occurred in the same time and place (i.e. within a specific distance and in the same fishing season). The ... in the Ross Sea region. This index was subsequently used in 2013 to select the tagging data to be ... included in the stock assessment for the Ross Sea region and Amundsen Sea region, with the understanding ... to include in the stock assessment, with respect to both tag release and tag recapture data. Here we ...
Meeting Document : WG-SAM-14/30 : Author(s): S. Mormede (New Zealand)