Resultados de la búsqueda
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Are krill recruitment indices from meso-scale survey representative for larger areas?
programme which continuously collected krill demography data since 1993 during the austral summer season in ... ) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... for age-one-old krill between scientific surveys from the northern Bellingshausen Sea, the Elephant ... was detectable between the krill recruitment of Atlantic and Indian Ocean survey sites. Problems of ...
Meeting Document : WG-EMM-02/20 : Autor(es): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)
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Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill
acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration was ... absorption, and beam characteristics. Uncertainty in krill target strength (TS) was estimated using a ... distorted wave born approximation model of krill TS, fitted with measured distributions of animal lengths ... assumed the three frequency measurements provided independent estimates of the krill biomass. The overall ...
Meeting Document : WG-EMM-00/49 : Autor(es): D.A. Demer (USA)
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
Abstract: Ten years of recent finescale haul-by-haul krill data were used to characterize the ... behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... for describing a generalised fishery model. Updates for some of the parameters for the krill fishery ... demonstrate the need for high quality year-round data on all vessels participating in the krill fishery to ...
Meeting Document : WG-EMM-09/P05 : Autor(es): S. Kawaguchi and S.G. Candy
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Catch per unit effort data from the early years of commercial krill fishing operations in the Atlantic sector of the Antarctic
Abstract: Catch Per Unit Effort data are presented from krill fishing operations in CCAMLR ... validity of the CPUE index is discussed as an indicator for krill abundance/biomass and caution is ... the amount of krill available in a Statistical Subarea. Overall length frequency distributions from ... influence the representativeness of krill smaller 35 mm in the catches. Author(s): Sushin, V., Siegel, V ...
Meeting Document : WG-EMM-97/22 : Autor(es): Sushin, V., Siegel, V.
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An outline of the proposed dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Abstract: A dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season is planned by ... Japan. No krill biomass has been estimated in the Division since 1996 when Australia carried out BROKE ... . There are two main objectives of our survey: (1) estimation of krill biomass to update B(0) in the area ... vessel, Kaiyo-maru, will be used in the survey. The krill survey (echosounder and RMT) and subsequent ...
Meeting Document : SG-ASAM-17/01 : Autor(es): H. Murase, K. Abe, T. Ichii and A. Kawabata
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Estimating density and biomass of Antarctic krill around South Sheltland Islands using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... 2016 and 38 and 200 kHz from March 6 to 14 in 2017. Krill were collected by the commercial middle trawl ... survey. The weighted krill density and biomass were estimated to be 0.20 g/m 2 and 18 thousand tons (CV ... v difference-3.0-13.8 dB in 2017, respectively. Krill density and biomass were significantly higher ...
Meeting Document : WG-EMM-17/08 : Autor(es): S.-G. Choi, K. Lee and D. An
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A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea
Abstract: A Spatial Multi-species Operating Model (SMOM) of the underlying krill-predator-fishery ... precautionary catch limit for krill among 15 small-scale management units (SSMUs) in the Scotia Sea to reduce ... of krill in each of the SSMUs, as well as the numbers of predator species in each of these areas. The ... krill. The SMOM developed here is intended for use as an operating model in a formal MP framework ...
Meeting Document : WG-EMM-06/12 : Autor(es): É. Plagányi and D. Butterworth (South Africa)
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ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES
Abstract: Over the past few years WG-EMM has been developing a management procedure for the krill ... the distribution of predator demand (Option 2), krill standing stock (Option 3), or the difference ... distribution of predator demand and krill standing stock and assess their potential implications. We consider ... suggest that the data documenting the distribution of krill standing stock are likely to be more reliable ...
Meeting Document : WG-EMM-08/12 : Autor(es): P.N. Trathan and S.L. Hill (United Kingdom)
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The Role of Fish as Predators of Krill (Euphausia superba) and Other Pelagic Resources in the Southern Ocean
Abstract: First attempts were made in the early 1980’s to estimate the krill and pelagic food ... number of food studies were conducted. Currently, the best estimates of krill consumption by fish are 23 ... – 29. 106 tonnes of krill and other pelagic prey taken annually by demersal fish and 7 – 44. 106 tonnes ... quantitative winter food studies. However, it is evident from this review that the importance of krill in fish ...
Meeting Document : CCAMLR-IWC-WS-08/09 : Autor(es): Collins, M.A., Williams, R., Agnew, D.J., Kock, K.-H., Belchier, M., Shust, K.V., Welsford, D., Hanchet, S., Pshenichnov, L., Barrera-Oro, E.
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Preliminary evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3
Abstract: The Scientific Committee has previously used results from the Krill-Predator-Fishery ... for the krill fishery will compromise the Commission’s ability to achieve the objectives in Article II ... of the Convention. Management strategies for the krill fishery are currently comprised of an overall ... management units (SSMUs) every five years based on results of monitoring either (1) the density of krill (g·m ...
Meeting Document : SC-CAMLR-XXXVII/BG/12 : Autor(es): Delegation of the USA