Résultats de la recherche
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IMPACTS OF CLIMATE CHANGE ON ANTARCTIC MARINE ECOSYSTEMS: A CALL FOR ACTION
Abstract: Climate change has emerged as an important topic in Antarctic research over the past ... decade, but little in the way of policy or operational change has resulted at CCAMLR. Over the past 50 ... changes are accelerating as time passes, including regional changes in sea ice persistence and extent. The ... reductions in sea ice will be among the most immediate changes, and likely will lead to major alteration in ...
Meeting Document : CCAMLR-XXVII/BG/27 : Auteur(s): Submitted by ASOC
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Do fish prey size affect the foraging patterns and breeding output of the Antarctic shag Phalacrocorax bransfieldensis?
the Antarctic Shag Phalacrocorax bransfieldensis was obtained at three colonies in the Danco Coast (Py ... , followed by octopods and gastropods. Between colonies there were marked differences in the size of the fish ... . Differences in the composition of the diet might be related to different foraging areas used by the shags ... spent significantly more time in foraging activities. Although at the beginning of the study the number ...
Meeting Document : WG-EMM-02/4 : Auteur(s): R. Casaux and A. Baroni (Argentina)
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The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia
Euphausia superba was the main prey item, occurring in 88% of all scats (n=497), whereas fish occurred in 47 ... % and squid in 5%. There was considerable intra and inter-annual variation in the characteristics of ... selecting particular sizes of krill and, therefore, that the krill in the diet reflects the krill available ... around South Georgia. The absence of group 3 krill (44-48 mm in length) in the South Georgia area, as ...
Meeting Document : WG-EMM-95/28 : Auteur(s): Arnould, J.P.Y., Reid, K.
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Research results from the SPRFMO exploratory fishing program for Antarctic toothfish 2016 and 2017
toothfish in the South Pacific Regional Fisheries Management Organisation (SPRFMO) Convention Area during ... catch rates of post-spawning Antarctic toothfish, similar in magnitude to catch rates in the north ... . Fish were in poor body condition as assessed using Fulton’s condition factor indicative of full or ... partial starvation which would be consistent with a spawning event prior to the sampling in 2016 and 2017 ...
Meeting Document : WG-FSA-18/39 : Auteur(s): J.M. Fenaughty, M. Cryer and A. Dunn
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Effect of a shore-based sampling program on Notothenia coriiceps populations
coriiceps was studied at Potter Cove, South Shetland Islands, by comparing catch data taken in successive ... summers of 1992/93 to 1994/95 at one specific zone (site 1) with those taken in the same last summer at ... under similar sampling conditions (depth, net measurements, bottom type). In site 1, a marked decrease ... in length (TL) of the fish was observed throughout the whole period. The fish from sites 2 (x=32.4 cm ...
Meeting Document : WG-FSA-99/24 : Auteur(s): R. Casaux and E. Barrera-Oro (Argentina)
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SEASONAL ESTIMATION OF ABUNDANCE BY BOOTSTRAPPING INEXACT RESEARCH DATA (SEABIRD): A METHOD FOR ASSESSING ABUNDANCE AND UNCERTAINTY FROM HISTORICAL COUNT DATA USING ADELIE PENGUINS AS A CASE STUDY
Abstract: In addition to a review of published studies on Adelie penguin abundance at breeding ... sites in Antarctica, Southwell (2004) proposed a general abundance estimator appropriate for a species ... of that kind. The present study attempts to implement this estimator in the form of a parametric ... uncertainty at breeding sites in Antarctica. To achieve this task, a menu-driven suite of routines titled ...
Meeting Document : WG-EMM-PSW-08/11 : Auteur(s): J.P. McKinlay and C.J. Southwell (Australia)
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Distribution and abundance of skates (Bathyraja spp.) on the Kerguelen Plateau through the lens of the toothfish fisheries
as incidental by-catch in Patagonian toothfish (Dissostichus eleginoides) longline and trawl ... fisheries, and the mackerel icefish (Champsocephalus gunnari) trawl fishery on the Kerguelen Plateau (KP) in ... mainly with depth. Off Heard Island and McDonald Islands (HIMI), in the southern part of the KP, B ... respectively. The smallest species, B. murrayi, occurred mainly in the shallower waters down to 550 m, and was ...
Meeting Document : WG-FSA-16/P03 : Auteur(s): G.B. Nowara, P. Burch, N. Gasco, D.C. Welsford, T.D. Lamb, C. Chazeau, G. Duhamel, P. Pruvost, S. Wotherspoon and S.G. Candy
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Report on attendance at the Sixth Meeting of the Committee for Environmental Protection Under the Madrid Protocol
Abstract: This report outlines the participation of the SC-CAMLR Chair in the Sixth Meeting of ... (with those organizations) to seek a common approach as to how special protection for species in the ... Protected Species in the Antarctic marine environment could be addressed”. However, the CEP did not agree to ... Conservation of Antarctic Seals in the case of seals, or other organizations where appropriate”. (b) The CEP’s ...
Meeting Document : CCAMLR-XXII/BG/11 : Auteur(s): Chair of the CCAMLR Scientific Committee
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Managing fisheries to conserve the Antarctic marine ecosystem: practical implementation of the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR)
Abstract: Apart from exploitation of seals and whales, Antarctic fisheries began in the late ... 1960s with exploitation of the marbled rockcod, Notothenia rossii, in the South Atlantic, a species ... decimated in the first two years of the fishery following catches of about 500,000t. Two other species have ... (Champsocephalus gunnari), both of which still occur. Finfish catches declined in the 1980s but the development of ...
Meeting Document : SC-CAMLR-XVIII/BG/26
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An update of the ageing program for Patagonian toothfish (Dissostichus eleginoides) at the Australian Antarctic Division, including a summary of new data available for the Integrated Stock Assessment for the Heard Island and the McDonald Islands fishery (Division 58.5.2)
in relation to the laboratory processing of otoliths and quality control in the assignment of fish ... capacity for ageing and at a lower cost per otolith. Greatest efficiency gains have been made in the ... laboratory, with otoliths now set in smaller resin blocks that take much less time to section, and in quality ... in any ageing program is to minimise the effect that a reader has in assigning ages. In the AAD ...
Meeting Document : WG-FSA-14/45 : Auteur(s): B.M. Farmer, E.J. Woodcock and D.C. Welsford (Australia)