Search results
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A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey
of concordance with scientific net samples. In order to examine the potential of using krill in the diet ... of Antarctic krill Euphausia superba across the Scotia Sea. Resolution of the spatial component ... of this variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... . At South Georgia krill in the diet of Antarctic fur seal Arctocephalus gazella show a good level ...
Meeting Document : WG-EMM-99/33 : Author(s): K. Reid (United Kingdom)
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The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model
Paper Title: The choice of procedure for deciding when to close fisheries regulated by CCAMLR ... for deciding the closure date for fisheries monitored by the Secretariat of CCAMLR, have been difficult ... to implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random ... periods, and closes the fishery if these rates indicate that the TAC will be taken before the next report ... TO CLOSE FISHERIES REGULATED BY CCAMLR: A SIMULATION MODEL DJ. Agnew* Abstract The methods ... , described in CCAMLR Conservation Measures, used for deciding the closure date for fisheries monitored ... by the fisheries. Non-fluctuating random and fluctuating random catch histories are simulated and the perfonnance ... regression over the latest four reporting periods, and closes the fishery if these rates indicate ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Author(s): Agnew, D.J.
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
the uncertainties in knowledge. This will be part of the management procedure governing the krill fishery ... the uncertainties in knowledge. This will be part of the management procedure governing the krill fishery ... Abstract: CCAMLR requires an assessment method for recommending a subdivision of the krill catch ... for developing ecosystem models to evaluate krill management procedures. The first section of this part outlines ...
Meeting Document : WG-EMM-04/24 : Author(s): A. Constable (Australia)
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Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data
krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data ... vertical migration of Antarctic krill (Euphausia superba) associated with the brightness categories ... fisheries data. Average trawling depth usually showed a marked diurnal change during summer and winter in SS ... . However, it shifted to shallower in early spring, when krill began to feed on phytoplankton. Vertical ...
Meeting Document : WG-EMM-04/44 : Author(s): K. Taki, T. Hayashi and M. Naganobu (Japan)
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Krill caught by predators and nets: differences between species and techniques
during February 1986 at South Georgia were compared to krill from scientific nets fished in the area ... February 1986 at South Georgia were compared to krill from scientific nets fished in the area at the same ... Abstract: Samples of Antarctic krill collected from six seabird species and Antarctic fur seal ... at the same time. The length-frequency distribution of krill was broadly similar between predators and nets ...
Meeting Document : WG-EMM-96/09 : Author(s): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.
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Monitoring krill population variability using seabirds and seals at South Georgia – new samplers provide new insights
in the distribution and abundance of a single dominant zooplankton species, Antarctic krill Euphausia superba ... . At South Georgia interannual variability in the krill-based marine ecosystem has historically been most ... in the population size structure of krill in the diet of Antarctic fur seals Arctocephalus gazella, particularly ... associated with periods of low krill biomass, has shown that the population dynamics of krill is a major ...
Meeting Document : WG-EMM-04/63 : Author(s): K. Reid, E.J. Murphy, J.P. Croxall and P.N. Trathan (United Kingdom)
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Volume 17: CCAMLR. 2005. Statistical Bulletin, Vol. 17 (1995–2004). CCAMLR, Hobart, Australia.
in fishery assessments conducted by CCAMLR’s Scientific Committee and working groups. Users ... Seabed areas used in fishery assessments conducted by the CCAMLR Scientific Committee and its working ... : 61 3 6234 9965 Email: ccamlr@ccamlr.org Website: www.ccamlr.org Copies of this document ... USED IN FISHERY ASSESSMENTS Table 19 Seabed areas within the fishable depth ranges of Dissostichus ...
Document : Site Section: Publications
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Ecosystem modelling for the Antarctic krill fishery
but there is concern that the reduction in krill biomass due tome fishery may have impacts on other krill predators ... resource. In this context we aim to investigate whether the krill fishery and the top predators ... : Ecosystem modelling for the Antarctic krill fishery Approval: Approved ... but there is concern that the reduction in krill biomass due tome fishery may have impacts on other krill predators ...
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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Selectivity of commercial and research trawls in relation to krill
in krill length composition was observed between catches made by the research trawl, while in commercial ... in krill length composition was observed between catches made by the research trawl, while in commercial ... Paper Title: Selectivity of commercial and research trawls in relation to krill Abstract ... / Description: This paper describes the results of fishing a single krill aggregation with a commercial trawl ... composition was observed between catches made by the research trawl, while in commercial trawl catches krill ... measurements were carried out by the same scientific observer and all samples were sorted by 2 mm length ... with the IKMT research trawl data. For the maximum observed difference in krill mean lengths ( A L = 6.2 mm ... of length-weight relationships for antarctic krill. In: Selected Scientific Papers, 1992 (SC-CAMLR-SSP ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Author(s): Kasatkina, S.M
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By-catch of rays in the 2002/03 toothfish fishery around South Georgia
from all observers’ tally periods on the catch rates of rays cut off the line; • In 2003 the UK ... of the observer tally information and the survivorship experiments. The estimate, between 34 and 46 t, is an order ... of magnitude lower than the precautionary TAC for this fishery, 390 t. Author(s): D.J. Agnew, J. Pearce ... and M. Endicott (United Kingdom) Title: By-catch of rays in the 2002/03 toothfish fishery around South Georgia ...
Meeting Document : WG-FSA-03/58 : Author(s): D.J. Agnew, J. Pearce and M. Endicott (United Kingdom)