Search results
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A review of national observer training and education programs (Scheme of International Scientific Observation)
Abstract: At CCAMLR-XXV, the Scientific Committee noted that the implementation of the observer ... program and the application of observer requirements could be improved by adopting a standard approach to ... levels of education and training for observers was undertaken by the Secretariat. Information provided by ... identified, these are: role of the scientific observer; vessel and fishing operations; catch estimation; gear ...
Meeting Document : SC-CAMLR-XXVI/BG/09 Rev. 1 : Author(s): Secretariat
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
Abstract: Chinstrap penguins Pygoscelis antarctica are one of the major consumers of Antarctic ... krill Euphausia superba in the Southern Ocean. To examine their foraging strategy, we studied foraging ... trips). The diving depths of our study birds were much deeper (to 179 m) than previous studies on this ... maximum depth, the typical characteristics of benthic dives. These benthic-type dives were more abundant ...
Meeting Document : WG-EMM-03/37 : Author(s): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
Abstract: The marine pelagic system around South Georgia is characterised by considerable inter ... local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , Euphausia superba, which is a major prey species for many vertebrate populations at South Georgia. The ...
Meeting Document : WG-EMM-09/23 : Author(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)
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UPDATED PRELIMINARY RESULTS OF AN ECOLOGICAL RISK ASSESSMENT FOR SEABIRDS AND MARINE MAMMALS WITH RISK OF FISHERIES INTERACTIONS
identify areas or species requiring additional management or monitoring. Our study indicated that the risk ... particularly strong overlap between fishing effort and species ranges. We tested the sensitivity of the ... adding a factor of population. We found the outcomes of the PSA analyses were robust to these effects ... . However, adult survival rates did influence the rankings, and were identified as a key parameter requiring ...
Meeting Document : WG-FSA-08/51 : Author(s): S. Waugh, D. Filippi, N. Walker (New Zealand) and D.S. Kirby
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Abstract: Understanding the temporal variability in vital rates (e.g. growth and survivorship) of ... estimating growth from observed length-frequency samples by combining kernel density estimates of the length ... -frequency distribution and the von Bertalanffy growth function. Our approach is conceptually straightforward ... and easy to implement. We applied the methods to Antarctic krill Euphausia superba collected from the ...
Meeting Document : WG-EMM-13/P01 : Author(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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Fishery-based research in exploratory fisheries
Abstract: This paper summarises the data collection requirements for the exploratory fisheries ... for Dissostichus spp. and the general characteristics of the research hauls which may assist WG-FSA to ... determine the extent to which the available data may be used in developing assessments for these fisheries ...
Meeting Document : WG-FSA-11/25 : Author(s): Secretariat
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Estimating by-catch from CCAMLR data
Abstract: Quantifying the catch rates and biomass of by-catch species on CCAMLR’s fishing grounds ... is an essential component of the assessment advice prepared by WG-FSA. However, such analyses are ... problematic because the CCAMLR datasets are incomplete and have a high occurrence of ‘missing catch values’. A ... method to treat ‘missing catch values’ using estimates derived from the mean weights of by-catch species ...
Meeting Document : WG-FSA-SAM-05/4 : Author(s): Secretariat
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Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data characterisation and analysis
Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3. It describes the tagging procedure, the ... information gained about biology, growth and movement of Patagonian toothfish, and explains the overlap of ... tagging length distributions with those of the landed catch and survey data. The characterisation of tag ... recapture data from Subarea 48.3 shows that the tagging programme is successful in providing substantial ...
Meeting Document : WG-SAM-14/35 : Author(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)
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UK groundfish survey in Subarea 48.3 (South Georgia and Shag Rocks), January 2000
Abstract: A survey was conducted by the UK around South Georgia and Shag Rocks, Subarea 48.3 ... , from 11 January to 2 February 2000, using the FV Argos Galicia. The design followed similar surveys by ... the UK conducted throughout the late 1980s and 1990s. The swept area estimates of the standing stock ...
Meeting Document : WG-FSA-00/21 : Author(s): I. Everson, D. Agnew, P. Bagley, M. Collins, T. Daw, R. Forster, T. Marlow, A. North (United Kingdom), J. Szlakowski (Poland), E. Van Wijk (Australia), S. Wilhelms (Germany) and C. Yau (United Kingdom)
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UPDATE ON ITEMS OF INTEREST TO WG-IMAF
Economic Zone that are relevant to the work of the IMAF working group. The bycatch of seabirds by fisheries ... within New Zealand’s EEZ in recent years that either breed or forage within the CCAMLR convention area ... (Convention Area seabirds) is detailed. This paper contains description of the recent and ongoing seabird ... mitigation trials that are underway in New Zealand. We also briefly report on the ongoing revision of the ...
Meeting Document : WG-IMAF-09/16 : Author(s): N. Walker (New Zealand)