Résultats de la recherche
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2017 – Reflection of the recommendations by WG-EMM-16 and SC-CAMLR-XXXV
in support of the development of a CCAMLR MPA in the Weddell Sea. Germany was asked to carry out ... further work, in particular regarding the issues and questions raised at WG-EMM-16 and SC-CAMLR-XXXV. Here ... , the Delegation of Germany intends to update the Scientific Committee on the current state of the work ... carried out during the 2016/2017 intersessional period. Chapter 1 of this working group paper informs on ...
Meeting Document : SC-CAMLR-XXXVI/BG/28 : Auteur(s): Delegation of Germany
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Standing stock estimates of finfish biomass from the 2002 Polarstern bottom trawl survey around Elephant Island and the South Shetland Islands (Subarea 48.1) with some notes on the composition of catches taken north of Joinville Island – D’Urville Island
significant adult stock of N. rossii at Elephant Island where the species was known to occur in some ... distribution of the abundant fish species was provided. Estimates of total biomass for Elephant Island and the ... resembled closely those in previous years. The proportion of juvenile G. gibberifrons, the most abundant ... species in the region, decreased significantly since 1998. No indication was found for the presence of a ...
Meeting Document : WG-FSA-02/24 : Auteur(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von Bertouch (CCAMLR Secretariat), D.F. Doolittle (USA), M. la Mesa (Italy), L. Psenichnov (Ukraine), R. Riehl (Germany), T. Romeo (Italy), S. Schöling (Germany) and L. Zane (Italy)
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The influence of the shape of meshes on the selective properties of trawls with special reference to Antarctic krill
part of the trawl are improved and at the same time the selectivity range of retained fish gets lower ... Abstract: The results of investigations are presented on selective properties of experimental ... trawls with a square- and diamond-shaped mesh, on the traumatic rate of krill passed through a mesh and ... screening rate was observed in the cod end instead of the belly,the selective properties of the retaining ...
Meeting Document : SC-CAMLR-VIII/BG/09 : Auteur(s): Delegation of USSR
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The results of performance of tagging programs of the Korean exploratory fishery for Dissostichus spp. in 88.1 in the 2010/11 season
J and L were over 19. The highest CPUEs in each SSRU were the CPUE at a depth of 1,500 to 1,600M in ... . Although females were mostly predominant in 88.1 JL, at depth from 600 m to 700m in 88.1L number of males ... presented the results from the fisheries and comparison of statistics in each SSRU. Total catch including by ... the total catches in 78 hauls while by-catches were 133 fish. The CPUEs of Dissostichus Spp. in 88.1 J ...
Meeting Document : WG-FSA-11/54 : Auteur(s): T. Jung and H.J. Choi (Republic of Korea)
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To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2
Cosmonauts Seas (30–80°E). At this the following main problems were addressed:- Systematization of krill ... Abstract: In 1994 the group of above mentioned authors has completed the first stage of ... researches for creation of an imitation model of krill distribution and search in the Cooperation and ... echograms (types of aggregations, their main characteristics),- Assessment of distribution of aggregations ...
Meeting Document : WG-Krill-94/7 Rev. 1 : Auteur(s): V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)
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Preliminary stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6)
Abstract: A preliminary assessment is undertaken to increase the knowledge of the Patagonian ... releases/recaptures data, commercial catch-at-length data and Killer whales impact. Preliminary results ... show different estimates for the initial and current biomass. A range of 55000 to 115000 tons is ... observed for B0 estimates and SSB never fall below 70% of the initial biomass considering the actual level ...
Meeting Document : WG-FSA-13/05 : Auteur(s): R. Sinegre and G. Duhamel (France)
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Demographic characteristics of the Adélie penguin population of Béchervaise Island after 12 years of study
years of CEMP monitoring. A life table was constructed, and predicted rates of population growth and ... breeding success calculated. As for most long-lived seabird species, growth/decline rates of the Adélie ... penguin population at Béchervaise Island were found to be more sensitive to changes in annual survival ... rates, especially of young breeding adults, than to changes in fecundity parameters. These findings are ...
Meeting Document : WG-EMM-02/48 : Auteur(s): J. Clarke, K. Kerry, A. Townsend and L. Emmerson (Australia)
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SPATIAL AND TEMPORAL VARIATION IN ATTRIBUTES OF ADELIE PENGUIN BREEDING POPULATIONS: IMPLICATIONS FOR UNCERTAINTY IN ESTIMATION OF THE ABUNDANCE OF BREEDING PENGUINS FROM ONE-OFF COUNTS
Abstract: Broad-scale surveys of penguin breeding abundance generally rely on on-off counts of ... adults, nests or chicks across several or many breeding sites, and the timing of these counts is often ... outside the control of researchers. Time series counts of Adelie penguin breeding population attributes ... with date-specific correction factors to estimate the population attempting to breed at the beginning ...
Meeting Document : WG-EMM-PSW-08/07 : Auteur(s): C. Southwell, J. McKinlay, R. Pike, D. Wilson, K. Newbery and L. Emmerson (Australia)
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Results of the research fishing activities conducted by Chile in Management A of Subarea 48.3 from 2005–2008: the importance of conserving the big older fishes
fish caught, at a mean rate of approximately 1 kg per year/per individual. This result suggests that ... Abstract: This research makes a contribution to the Agenda Item 8 of the WG-FSA. (Biology ... , ecology and demography of target and by-catch species) and shows the response of the local population of ... Dissostichus eleginoides (TOP) from the Area management A (subarea 48.3), after 4 year of closure (2004 to 2008 ...
Meeting Document : WG-FSA-10/35 : Auteur(s): C.A. Moreno and P. Rubilar (Chile)
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Application of the bootstrap-method in assessment of target strength regression parameters on the basis of in situ measurements
(PDFs) of fish length and target strength at 38 kHz and truncated PDFs are presented. We reveal that it ... Abstract: Target strength (TS) as a function of fish length (L) must be known to estimate fish ... characterizing the uncertainty of its parameters. We show that the bootstrap–method is a highly efficient method ... of estimating the parameters of TS-length function and emphasize that calculation results depend on ...
Meeting Document : WG-FSA-SAM-04/09 : Auteur(s): P.S. Gasyukov and S.M. Kasatkina (Russia)