Search results
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Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first in a ... early1980s). We hoped that conducting several surveys in one season would provide information on short-term ... variability that could be used to set data from more restricted “snap-shot” cruises in a broader context. The ...
Meeting Document : WG-EMM-01/15 : Author(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
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EXPECTED TAG RECAPTURE RATES FROM NEW AND EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP.
Abstract: Tag recapture rates in new and exploratory Dissostichus spp. fisheries in the southern ... Indian Ocean sector of the CCAMLR area are examined. In particular, the potential for tagging programs in ... new and exploratory fisheries to yield sufficient data to be of use in determining TAC’s in the early ... , tag detection rates, natural mortality, fish movement out of the fishery, and IUU removals in order to ...
Meeting Document : WG-FSA-08/63 : Author(s): J.P. McKinlay and D.C. Welsford (Australia)
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Diet of grey-headed albatrosses at the Diego Ramírez Islands, Chile: ecological implications
prey hard parts present in 103 chick regurgitates obtained during breeding seasons 2000, 2001 and 2002 ... . The squid Martialia hyadesi predominated in the diet samples in 2001 and 2002 (89% and 81% of ... reconstituted mass), but was absent from the 2000 samples. Reconstituted mean mass per sample in 2000 was ... significantly lower than in 2001 and 2002. Chick growth rate during 2000 was also the lowest recorded. This ...
Meeting Document : WG-FSA-04/12 : Author(s): J. Arata (Chile), G. Robertson (Australia), J. Valencia (Chile), J.C. Xavier (UK) and C.A. Moreno (Chile)
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Educational poster on hook ingestion
hooks discarded in fish heads which ingestion by seabirds, especially wandering albatrosses which are ... large enough to swallow fish heads whole (SC-CAMLRR-XXI/BG/7). For example, in 2001/02 the scientific ... observer on the F/V Argos Helena estimated that >15,000 fish heads were discarded with hooks still in ... them. The hooks found in albatross colonies at South Georgia in years prior to 2001/02 were of the type ...
Meeting Document : WG-FSA-07/20 : Author(s): G. Robertson (Australia)
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Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area
are presented and discussed in the paper. Detailed results of these studies are compiled in tables ... such as age-length keys, mean fish length by age, length and age frequency distributions in catches ... . Soviet vessels had first carded out fishery for the species in the 1984/85 season. Fishing grounds during ... this period were located in the west shelf area (48°30’- 49°30’S and 66°50’- 67°20’E). Total catch was ...
Meeting Document : WG-FSA-92/08 : Author(s): V.G. Prutko and V.N. Chikov (Ukraine)
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G
and length frequency data. Although 880 tagged fish have been released in this region, only 2 tagged ... fish have been recaptured. It is likely that the lack of recaptures of tagged fish in this region has ... effort. By drawing on the success of tagging programmes in other CCAMLR fisheries, we develop an approach ... identify four main grounds previously fished in SSRUs 88.2C–G. We recommend that in the short term (the ...
Meeting Document : WG-FSA-14/59 : Author(s): S.M. Hanchet and S.J. Parker (New Zealand)
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The breeding biology and distribution of Adelie penguins: adaptations to environmental variability
Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... of Adelie penguins in the Southern Ocean are variability in sea ice cover, ocean circulation patterns ... and terrestrial topography. We analyzed Adelie distributions in the Antarctic Peninsula region and ... concluded that Adelie penguins have discrete subpopulations in the northeastern and southwestern regions of ...
Meeting Document : WG-EMM-96/58 : Author(s): Fraser, W.R., Trivelpiece, W.Z.
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Potential effects of UV-B on krill – experimental and genetic studies
Abstract: We irradiated captive juvenile Euphausia superba in the laboratory with lower than ... spring surface levels of ultraviolet-B, ultraviolet-A and photosynthetically active radiation, in order ... to examine their response in terms of mortality and generalised activity. Levels of ... animals in the dark survived. Addition of ultraviolet-B typical of depths up to 15 m were found to ...
Meeting Document : WG-EMM-99/24 : Author(s): S. Newman, S. Jarman, S. Nicol, D. Ritz, H. Marchant, N. Elliot and A. McMinn (Australia)
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CEMP cameras and satellite transmitters installation by Ukraine at the Galindez, Petermann, and Yalour Islands penguin colonies as a part of CEMP Fund projects
Abstract: In the report we inform shortly on the activity in the Ukrainian Vernadsky Antarctic ... Station area on service of CEMP cameras and installation ARGOS satellite tags in penguin colonies as part ... Network in Subarea 48.1' and 'Tracking the overwinter habitat use of krill dependent predators ... from Subarea 48.1'. In season 2016/17 biologists winteres made service for nine cameras and ...
Meeting Document : WG-EMM-17/21 : Author(s): G. Milinevsky, I. Dykyy, D. Lutsenko, O. Savitsky, A. Simon, M. Telipska, V. Lytvynov and L. Pshenichnov
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Estimation of the fishery–krill–predator overlap
by CCAMLR (catch in the Critical Period and Distance [CPD], Agnew-Phegan index, and Realised ... distributions. Only catch in the CPD can presently be used to estimate overlap in areas other than Subarea 48.1 ... . The catch in the CPD and the Agnew-Phegan index were closely correlated, as were the RPO and Schroeder ... reduced overlap in Subarea 48.1 after 1990. The RPO and Schroeder index indicated a greater increase in ...
Meeting Document : WG-EMM-99/11 : Author(s): Secretariat