Resultados de la búsqueda
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Seasonal variation in acoustic estimates of krill density at South Georgia during 2001/2002
(middle), and one in May 2002 (late). The surveys were the second in a five-year series of observations ... South Georgia have revealed a similar pattern of change to that observed in 2000/2001 and highlight the ... around South Georgia in the 2001/2002 season: one in November 2001 (early); two during January 2002 ... designed to complement and extend an existing time series of summer surveys maintained by the British ...
Meeting Document : WG-EMM-02/39 : Autor(es): C. Goss, S.A. Grant, N. Cunningham, J.L. Watkins, P.N. Trathan, E. Murphy and K. Reid (United Kingdom)
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
Abstract: Understanding the temporal variability in vital rates (e.g. growth and survivorship) of ... Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ... . The large amount of variation in growth unexplained by environmental covariates has substantial ... (annual estimates for a 30 mm krill in the Elephant Island region ranged from 0.00 to0.17 mm d −1; mean ...
Meeting Document : WG-EMM-13/P01 : Autor(es): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
Abstract: We develop a new approach to quantifying habitat use within the foraging ranges of ... -rearing period of the breeding cycle at South Georgia. At this time the activity range of these two ... contrast, kernel estimation reveals that the main foraging areas of these two sympatric, congeneric species ... are very distinct. Based on location density categories accounting for 50% of locations, the foraging ...
Meeting Document : WG-EMM-01/67 : Autor(es): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)
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Assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.4
fits. Stock projections indicate that the stock was at 67% of B 0 in 2018/19 and that a yield of 27 ... tonnes in 2019/20 and 2020/21 is consistent with the application of the CCAMLR harvest control rule ... . eleginoides) in Subarea 48.4. The assessment data are updated with the observations for the 2017/18 season and ... the data weighting method revised to be consistent with those applied in other CCAMLR assessment model ...
Meeting Document : WG-FSA-2019/29 : Autor(es): T. Earl and E. MacLeod
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Population assessment of Antarctic toothfish in Subarea 48.4 using tag-recapture method
Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was estimated using as the ... Petersen method as 640 tonnes. Application of the harvest rate used for D. eleginoides in Subarea 48.3 (γ ... = 0.038) gives yields of 24 t for the Antarctic toothfish in the region vs. previous estimation of 30 ... tonnes. Author(s): V. Laptikhovsky (United Kingdom) Title: Population assessment of Antarctic toothfish ...
Meeting Document : WG-FSA-13/64 : Autor(es): V. Laptikhovsky (United Kingdom)
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Proportional recruitment indices of Antarctic krill from Japanese fisheries data in Subareas 48.1, 48.2 and 48.3 during 1980 through 1997
the distribution of small krill by commercial fisheries. Inter-annual pattern of R1 and R2 in Subarea ... should be dealt very carefully. In Subarea 48.3, R1 values showed the evidence of recruitments in two ... year classes, which coincided with the year classes of strong proportional recruitments in Subarea 48.1 ... . However, the complexity of length composition in this Subarea was also pointed out. Author(s): S ...
Meeting Document : WG-EMM-98/33 : Autor(es): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
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Comparison of Champsocephalus gunnari catches in Subarea 48.3 from1994–97 and 2013 cruises
Abstract: The local densities of Champsocephalus gunnari observed in the 2013 survey are ... in the early 1990’s was due to recruitment collapse, probably a consequence of overfishing. Author(s ... sampled was found. The comparison of the length distribution functions suggests that the stock depletion ... ): E. Marschoff and P. Martínez (Argentina) Title: Comparison of Champsocephalus gunnari catches in ...
Meeting Document : WG-FSA-13/65 : Autor(es): E. Marschoff and P. Martínez (Argentina)
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Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models
in subarea 48.3. This type of the models differ from the models currently used by CCAMLR Working ... of intensive fishery was at the level of 22-24 thousand tons. In 1989-1990 stock size increased (to ... mortality, age selectivity, recruitment estimates, mean weight at age) In the calculations with DPM (with ... estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ...
Meeting Document : WG-FSA-02/78 : Autor(es): P.S. Gasiukov and R.S. Dorovskich (Russia)
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Report on recent French catches of sea pens (Pennatulacea) in Lena Bank (CCAMLR sector 58.4.4b)
Abstract: Important catches of sea pens (Pennatulacea, NTW) in the 58.4.4b sector (Lena bank ... ) have been reported during the CCAMLR SAM Working Group 2018 (see WG-SAM-18/31 "Annual report of ... includes the exhaustive collection of the organisms caught by the longlines (see WG-EMM-17/09). This report ... : Report on recent French catches of sea pens (Pennatulacea) in Lena Bank (CCAMLR sector 58.4.4b) Approval ...
Meeting Document : WG-FSA-18/23 : Autor(es): A. Martin, J. Blettery and M. Eléaume
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Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4
Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was conservatively ... /16 yield of 24 t for the Antarctic toothfish in the region, compared to the previous 2014/15 ... estimated using the Chapman method as 621 tonnes. At a harvest rate of γ = 0.038 this would indicate a 2015 ... ) Title: Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4 ...
Meeting Document : WG-FSA-15/31 : Autor(es): N.D. Walker, V. Laptikhovsky, T. Earl and C. Darby (United Kingdom)