Resultados de la búsqueda
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Testing the performance of a recompiled version of TrawlCI to calculate confidence intervals of abundance in surveys of Patagonian toothfish (Dissostichus eleginoides) and mackerel icefish (Champsocephalus gunnari)
. We attribute this to differences in the minimisation routines of the recompiled version. We conclude ... long-term yield of Dissostichus eleginoides or Champsocephalus gunnari Author(s): T.D. Lamb, W.K. de ... la Mare and A.J. Constable (Australia) Title: Testing the performance of a recompiled version of ... TrawlCI to calculate confidence intervals of abundance in surveys of Patagonian toothfish (Dissostichus ...
Meeting Document : WG-FSA-SAM-05/14 : Autor(es): T.D. Lamb, W.K. de la Mare and A.J. Constable (Australia)
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Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... region were undertaken in January/February 1991, February/March 1992 and January/February 1993. The ... surveys indicated some association of krill with the shelf break in the western part of the survey area ... and the centre of the Prydz Bay region but also found that the shelf break was in general not a region ...
Meeting Document : WG-Krill-94/21 : Autor(es): T. Pauly and I. Higginbottom (Australia)
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A candidate process for managing the krill fishery at a local scale for krill predators, particularly in the early phases of the development of the krill fishery
application is demonstrated. Author(s): A. Constable, S. Kawaguchi, C. Southwell, L. Emmerson, W. de la Mare ... Abstract: In this paper, we develop a candidate management system for the krill fishery suitable ... for achieving objectives for krill and its predators in local areas. We also indicate how this ... management system can be made operational in the early phases of a fishery in a local area, which can then be ...
Meeting Document : WG-EMM-15/55 Rev. 1 : Autor(es): A. Constable, S. Kawaguchi, C. Southwell, L. Emmerson, W. de la Mare, P. Ziegler, D. Welsford and J. Melbourne-Thomas (Australia)
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Towards a new method for age determination in Antarctic krill, and evidence that krill shrink under natural conditions
. Author(s): W. de la Mare (Australia) Title: Towards a new method for age determination in Antarctic ... maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba ... individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions ... reached by length-frequency analysis may be unreliable. In this study, the correlation between the body ...
Meeting Document : WG-Krill-94/17 : Autor(es): W. de la Mare (Australia)
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
fishing season and spawning season will result in less bias occurring. Author(s): de la Mare, W.K ... ). The krill yield model uses a biased estimate of SB0 with a method for correcting this bias in the ... of SB0 in the krill yield model compared to the unbiased estimate in the generalised yield model. The ... results show that the biased estimate of SB0 results in a biased estimate of the probability of critical ...
Meeting Document : WG-EMM-97/45 : Autor(es): de la Mare, W.K., Constable, A.J.
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Assessments of by-catch in trawl fisheries at Heard and MacDonald Islands
. Author(s): de la Mare, W.K., Williams, R., Constable, A. Title: Assessments of by-catch in trawl ... caught as by-catch in the commercial trawl fisheries in the Heard Island area (Statistical SubArea 58.5.2 ... the spawning biomass of these stocks in the longer term. The long-term annual yield for each of the ... data obtained from the region in 1990-1993. Values for missing input parameters were obtained from the ...
Meeting Document : WG-FSA-97/30 : Autor(es): de la Mare, W.K., Williams, R., Constable, A.
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A condensed history and document of the method used by CCAMLR to estimate krill biomass (B0) in 2010
model and krill yield model (Constable and de la Mare, 1996; Butterworth et al. 1994). A key parameter ... Abstract: Antarctic krill (Euphausia superba) are considered to be one of the key species in the ... estimate of B 0 which is used by CCAMLR in the model is derived from the CCAMLR-2000 synoptic acoustic ... survey (hereafter CCAMLR-2000) in the Food and Agriculture Organisation (FAO) statistical subareas 48.1 ...
Meeting Document : WG-EMM-16/38 : Autor(es): S. Fielding, A. Cossio, M. Cox, C. Reiss, G. Skaret, D. Demer, J. Watkins and X. Zhao
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Interannual variability of krill, salp and other zooplankton populations in the South Shetland Island area during Austral summer 1993–1998
sea ice in the Antarctic Peninsula region. Overall krill length/maturity composition reflected poor ... recruitment from the past two years. Unusually small juvenile krill in 1998 suggested that survival success ... was limited to late-spawned eggs and larvae in 1997. Delayed spawning and few larval krill in 1998 ... were associated with extremely high salp abundance. Sa/pa thompsoni abundance was similar to levels ...
Meeting Document : WG-EMM-98/50 : Autor(es): V. Loeb, W. Armstrong, R. Hewitt (USA) and V. Siegel (Germany)
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On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000
Abstract: In the paper these have been discussed the results of acoustic estimation of ... echosounder in 48.4 Subarea. It has been shown that myctophid fish species are dominated in nectonic fraction ... fishes prevail in northern proving ground within the Antarctic Curcumpolar Current waters; zooplankton is ... distributed in the Weddell Sea waters. Though krill and zooplankton major biomasses are concentrated in upper ...
Meeting Document : WG-EMM-01/61 : Autor(es): S.M. Kasatkina and A.P. Malyshko (Russia)
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Preliminary results of otolith elemental composition analysis of Dissostichus spp. in Subarea 48.2
Abstract: In order to explore aspects related to the structure of population units and habitat ... Delegation in Subarea 48.2 of CCAMLR during the 2015/16 fishing season. The otoliths through laser ablation ... and mass spectrometry with inductively coupled plasma (LA-ICPMS) was sampled and analyzed. Eleven ... , using their relative concentration to Ca. The univariate and multivariate analysis of the elemental ...
Meeting Document : WG-FSA-17/30 : Autor(es): Delegation of Chile