Résultats de la recherche
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On influence of acoustic survey methodology improvement on krill biomass estimation. (A comparison of results of acoustic surveys based on single-frequency and double-frequency algorithms)
Abstract: Substantial improvements in data collection and analytical methodologies of acoustic ... influence of such improvements on krill biomass estimation. The letter seems to become useful in comparative ... algorithms that were obtained by processing data on Russian R/V ATLANTIDA surveying in 48.4 Subarea according ... difference in krill biomass estimates. A difference was more than 1.8 times in the case under consideration ...
Meeting Document : WG-EMM-01/41 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Preliminary results on by-catch of fishes caught by the fishery vessel Chiyo Maru No. 3 to the north of the South Shetland Islands (February to March, 1996)
in 41 hauls. Notothenioid juveniles were found in 30 hauls carried out in waters with a depth of 87 ... in 11 hauls operated at some distance from the shelf, in the offshore waters with a depth of 275 ... -1780m (average 1006m). Notothenioid juveniles never caught with bathypelagic fish species in all hauls ... found in 15 hauls, and its estimated value of an arithmetic mean was 4±19 ind./t (0 to 140 ind./t) of ...
Meeting Document : WG-EMM-96/52 : Auteur(s): Ichii, T., Kawaguchi, S., Naganobu, M.
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A simulation study of krill fishing by an individual Japanese trawler
, and their performance investigated in response to six different ways in which the overall krill ... biomass in a 600 n. mile square oceanic sector might decline by 50%. In most cases there is essentially no ... response of the index, or a response rather smaller in relative magnitude than the biomass decline. Catch ... statistics collected at present (centred primarily on catch per fishing time) are of low utility in detecting ...
Meeting Document : SC-CAMLR-VI/BG/38 : Auteur(s): D.S. Butterworth (United Kingdom)
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Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
are the two main land-based krill Euphausia superba consumers in the northern Scotia Sea. Using a ... -based (animal tracking and diet analysis) techniques, we examined variability in the foraging ecology of ... from acoustic surveys was low during summer, increasing in autumn. During the breeding season, krill ... occurred in 80% of fur seal diet samples, with fish remains in 37% of samples. Penguin diets contained the ...
Meeting Document : WG-EMM-10/P07 : Auteur(s): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
(Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... prey in 1994 and 2009, fish in 2004, and euphausiids other than E. superba (Thysanoessa spp. and E ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ... frequency occurrence of T. gaudichaudii both increased with a decreasing proportion of E. superba in the ...
Meeting Document : WG-EMM-12/17 : Auteur(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
program, in particular the effects of the size (tag size-overlap) and numbers of tagged fish, the duration ... of the tagging program, the type of auxiliary data used in the assessment, and the catch history ... emerged within this overall trend. The results show that in the early stages of the tagging program, a ... with a low tag size-overlap, even with large numbers, is likely to result in overestimates of biomass ...
Meeting Document : WG-FSA-12/18 : Auteur(s): P.E. Ziegler (Australia)
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Marine debris: a persistent and emerging threat to antarctic ecosystems
Abstract: CCAMLR has had success in tackling marine debris from local sources in the Southern ... marine debris, particularly in pelagic areas, is limited. This is particularly concerning, as recent ... evidence suggests that microplastic concentrations in the Southern Ocean are higher than previously thought ... , particularly microplastics, in Antarctic ecosystems is understudied. Combatting the problem of microplastics in ...
Meeting Document : SC-CAMLR-XXXVI/BG/29 : Auteur(s): Submitted by ASOC
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e-cc-xxii-a4.pdf
... the Commission accept the financial statements as presented in CCAMLR-XXII/3. AUDIT REQUIREMENT ... FOR 2003 FINANCIAL STATEMENTS 3. The Committee noted that the Commission had decided in 1994 that a ... full audit should be performed on average once every two years, and in 1995 that this would be ... required at least once every three years. The Committee noted its advice to the Commission in 2002 that
application/pdf attached to:SCAF-03Meeting Report : SCAF-03
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Catch rates and length composition data of the longline fishery for Dissostichus eleginoides at the Prince Edward Islands: 1996/97
eleginoides made in the vicinity of the Prince Edward Islands, a South African territory in the Indian Ocean ... Sector of the Southern Ocean, surfaced early in 1996. This generated both national and international ... interest in the fishery leading to a great influx of vessels to the area. By the end of 1996 up to 40 ... vessels had already landed catches of more than 23 000 tons in South Africa and Namibia. It is against ...
Meeting Document : SC-CAMLR-XVI/BG/28 : Auteur(s): Delegation of South Africa
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The use of Port State measures to improve fisheries compliance at the international levelIssues and instruments – the CCAMLR case
approaches to port State control in order to avoid the development of “ports of convenience” and improve ... , universally applicable instruments is also gaining momentum. In any case, there is a pressing need to develop ... ) fishing. CCAMLR is generally regarded as a good regional model in the area of port State control. Hence ... , CCAMLR Members should draw on their experience in port State measures, particularly on toothfish landings ...
Meeting Document : CCAMLR-XXV/BG/29 : Auteur(s): Submitted by ASOC