Résultats de la recherche
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The Kerguelen database
and biological data for the Kerguelen EEZ has been operating in France since 1979. At the end of the ... Paper Title: The Kerguelen database Abstract / Description: A database for fishery statistics ... 1984/85 fishing season, the data from 25 445 trawls had been entered into the database. A graphical ... representation of these data is presented for several parameters including a distribution of the fishing effort ... been operating in France since 1979. At the end of the 1984/85 fishing season, the data from 25445 ... . At the end of the split-year 1985/86 25445, trawlings have been registered in a database. The LFD ... THE KERGUELEN DATABASE G. Duhamel (France) - 23 ... - Abstract A database for fishery statistics and biological WG-CFSA-86/3 data for the Kerguelen EEZ has ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Auteur(s): Duhamel, G.
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Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996
for finfishing from 1989/90 onwards. Results of the first bottom trawl survey carried out after the ... Paper Title: Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996 ... Abstract / Description: Finfish stocks in the Antarctic Peninsula region (Subarea 48.1) were exploited ... from 1978/79 to 1988/89, with most of the commercial harvesting taking place in the first two years of ... 1989/90 onwards. Results of the first bottom trawl survey carried out after the closure of the area in ... to be carried out after the closure of the fishery was conducted in November/December 1996 (Table 2 ... (Kock, 1991 - Figure 30). After this, the proportion of larger (older) fish increased slowly from 1985 ... considerable decline in the abundance of the species after the 1979/80 season. During the survey in March ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Auteur(s): Kock, K.-H
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
phytoplankton distribution off the northern South Shetland Islands Abstract / Description: In December/February ... 1990/91 a survey was conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and ... Elephant Island. The main objective of the survey was to investigate the mechanisms responsible for the ... concentration of krill and to estimate krill biomass in the area surveyed. Krill biomass estimation was done by ... buoy, in the end, became entrained in waters adjacent to Elephant Island. Buoys 2 and 3 drifted ... ), whereas it approximated to the normal level towards the end of summer (mid-February to mid-April). On ... after (26 March 1991) of the cruise, the echo-integrator was calibrated in the port of Tokyo with the ... sensitivity of the echo-integrator after the cruise. 2.3 Drifting Buoy Studies For the study of flow ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
Paper Title: Seabird by-catch by autoline vessels: do line setters increase the sink rate of ... m –1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands Patagonian ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... between the two magazines in a pair marked either the beginning, or end, of the use of the line setter ... operated device mounted aft of the automatic baiting machine which pulls the longline through opposing ... by white-chinned petrels on IW longlines occurred 50–70 m astern, at the end of the aerial section ... (loose fol- lowing tight) the line became slack after only a few seconds had elapsed. Deployment of ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Auteur(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Paper Title: Preliminary analyses of data collected during experimental phases of the 1994/95 and ... 1995/96 Antarctic crab fishing seasons Abstract / Description: Data collected on board the FV American ... Champion during Phases 1 and 2 of the experimental crab fishery were analysed using generalised additive ... models and depletion estimators. Results from the generalised additive models show that the density of ... CCAMLR meeting, and initiated Phase 2 of the EHR immediately following the end of this meeting (when ... Antarctic crab fishery at the end of January, 1996 to participate in Subarea 48.3's fishery for ... depths. The start depth and end depth of each string was recorded in fathoms and two covariates were ... Champion began Phase 1 at the southern end of South Georgia and moved north and west as the phase ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Auteur(s): Watters, G
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
Paper Title: Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined ... . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... Antarctic icefish, bumphead notothenia, and Scotia Sea icefish. This was primarily caused by the heavy net ... some Antarctic fish, which make it difficult for them to escape from the codend. Selectivity properties ... bobin w o - 31 - A-codend B -f/ne-meshed t'nsefaf the end of the codend D -fine -meshed ... them was worked out during investigations : the codend used had open splitting straps. Only after ... size was 123.6 mm, after the first two and after 30 hours of the codend exploitation its mesh size ... 62.5 mm dry and 61.9 mm wet. A change in the size of mesh after submerging in water was very slight ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Auteur(s): Zaucha, J.
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
Paper Title: Quantifying vessel performance in the CCAMLR tagging program: spatially and ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... . In particular, tag-detection rates are directly linked to stock size estimated from the tag data in ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... yields (Mormede et al., 2011a, 2011b; Mormede, 2011). In those analyses, the assumed values of ... mortality of tagged fish and the subse- quent detection rate of recaptured tagged fish are important input ... parameters. For example, under- estimating the tag-detection rate of the fleet will result in an ... overestimate of the stock biomass. The assessment model assumes that all vessels have equal tag-detection ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Auteur(s): Mormede, S. and A. Dunn
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Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides
Paper Title: Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... Abstract / Description: Traditionally, the approach used in the assessment of new fisheries has been based ... on research surveys, making it possible to estimate the standing stock and potential yield of a ... resource by coarse methods. The main aim of such surveys is to monitor fishing operations in order to ... analysis for the Dissostichus eZeginoides fishery south of Chile, where a new fishery is beginning, with ... = numbers at the beginning of the research survey J.1i = exploitation rate F i = fishing mortality r i ... m = terminal age L\ = time between the beginning of the year and the beginning of the research ... • projecting stock size at the beginning of the fishing season, based on stock age composition estimated at ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
Paper Title: The use of predator-derived krill length-frequency distributions to calculate krill ... target strength Abstract / Description: The relationship between krill abundance and predator ... krill sampled from the diet of predators to provide a length-frequency distribution of krill at times ... calculated from acoustic data. Changes in the lengthfrequency distribution of krill over a period of a few ... additional estimates of krill abundance at the beginning and end of the Antarctic summer in conjunction ... . By assessing the krill biomass at either end of the austral summer, in addition to the normal ... ,,,) and in the diet of Antarctic fur seals (TSpred) after the application of a correction factor based on ... relationship given by Morris et al. (1988). After measuring krill in a sample to the nearest millimetre, the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Auteur(s): Reid, K. and A.S. Brierley
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... (1989) from the data obtained during the Chilean longline fishery in Subarea 48.3 (N = 7 848. The von ... differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... ) of Dissostichus eleginoides was calculated after Sparre (1989) from the data obtained during the ... Chilean longline fishery in Subarea 48.3 (N = 7 848). The von Bertalanffy growth parameters obtained ... sites. On the other hand, when comparing various mean values of M for the different cases, it was ... straight hooks No. 22. The general mean value of M calculated for the 44 analysed situations was 0.14 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Auteur(s): Moreno, C.A. and P.S. Rubilar