Resultados de la búsqueda
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Revised estimates of yield for Electrona carlsbergi based on a generalised version of the CCAMLR krill yield model
can result in inappropriate high estimates of yield that could lead to depletion of stocks because of ... widely varying recruitment patterns, overestimation of the abundance of the stock and age of the most ... recent survey. These problems are addressed in this paper by using stock projections to assess the ... probabilities of the stock of Electrona carlsbergi becoming depleted over a 20 year period. These projections ...
Meeting Document : WG-FSA-94/21 : Autor(es): A.J. Constable and W.K. de la Mare (Australia)
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Method for collecting of data on traumatic death of krill passed through the trawl meshes
different constructions including beam-trawl for several last decades. Not all krill in harvesting zone of ... krill individuals some part of them could pass through cover of net bag and escape of catch. In contact ... with threads of the net bag some of them may receive possibly lethal mechanical damage. Proposed method ... bag, only for fishing with hauling of full net for catch extraction. The analogous rating for fishing ...
Meeting Document : WG-EMM-12/43 : Autor(es): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)
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Materials on the biodiversity of areas of possible introduction
Abstract: It is shown that the proposals for the establishment of an MPA in the Weddell Sea ... fish species in the Weddell Sea. Author(s): Delegation of the Russian Federation Title: Materials ... on the biodiversity of areas of possible introduction Microsoft Word File: sc-xxxvi-bg-24.doc ... should be complemented by information on the commercial potential and future rational use for dominant ...
Meeting Document : SC-CAMLR-XXXVI/BG/24 : Autor(es): Delegation of the Russian Federation
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Implementation of the CCAMLR Scheme of International Scientific Observation during 2018/19
on data received by the Secretariat up to 18 September 2019). Developments in the Scheme of ... Abstract: This paper provides details of SISO observer deployments during the 2019 season (based ... Title: Implementation of the CCAMLR Scheme of International Scientific Observation during 2018/19 ... International Scientific Observation Programme are discussed, and results presented from the vessel tagging pro ...
Meeting Document : WG-FSA-2019/15 Rev. 1 : Autor(es): CCAMLR Secretariat
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On biogeographic patterns of benthic invertebrate mega fauna on shelf areas of the Southern Ocean Atlantic sector
that contributes to that biomass. In terms of biomass, the shelf area adjacent to the northern of the ... situation is reversed at each region’s easternmost shelves. In terms of composition, the demarcation occurs ... Abstract: The ideal approach to bioregionalisation of Antarctic and Southern Ocean shelf ... communities incorporates a range of data on physical, environmental and biological properties, as well as the ...
Meeting Document : WS-BSO-07/10 : Autor(es): S.J. Lockhart and C.D. Jones (USA)
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Swimming speed and allocation of time during the dive cycle of Antarctic fur seals
descent and ascent phases of dives with a reduction in speed near the bottom of the dive, when the seals ... in terms of reduced foraging time and may explain why mean dive depths for individuals were within ... Abstract: During sustained bouts of diving, predators like fur seals may adjust the time they ... between dives. To examine this, swimming speeds and the time allocated to different parts of the dive ...
Meeting Document : WG-EMM-95/25 : Autor(es): Bevan, R.M., Boyd, I.L., Reid, K.
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
determining the parameters of future applications that would lead to a validation of age. In the current study ... arbitrary target core weight of 0.01 g, near the low end of the range used in this study. It is recommended ... otoliths from these fishes were small and the number of otoliths available low, a whole otolith application ... was necessary as a first look at lead-radium levels. The application was successful as a first step in ...
Meeting Document : WG-FSA-10/17 : Autor(es): A.H. Andrews, M. La Mesa and J. Ashford (USA)
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass
of zooplankton stocks in the waters around South Georgia was carried out during November and December ... 1981. The data have been analysed using various definitions of strata. The total biomass in the area of ... estimate of mean density throughout the region of 11.7 tonnes km-2. Although the estimate of the mean is ... Paper Title: Analyses of acoustic line-transect data from the waters around South Georgia ... taken during the survey period is shown in Figure 2. Most of the krill were small, with a mean length ... to estimate the biomass of krill in this region. The mean weight of the sampled krill was 0.18 g ... an estimate of the total biomass in the region. This was 2.13 x 106 tonnes giving a mean krill ... based on the six regional strata shown in Figure 5. Source of Degrees of Sum of Squares Mean Square ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Autor(es): Murphy, E., I. Everson and A. Murray
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
, negative slopes. The insignificant regressions were probably a result of inter-haul variability in CPUE and ... depletion estimators for use in stock assessment, but the WG-FSA may wish to re-evaluate the design of Phase ... Abstract: Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... generalized additive models show that the density of fishable P. spinosissima is highest off the northern ...
Meeting Document : WG-FSA-96/34 : Autor(es): Watters, G.
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Calculation of indices of sea-ice concentration using digital images from the National Snow and Ice Data Centre
, made up of 312x332 pixels, each having a dimension of 25x25km, for every day in the year. Primary data ... percentage ice cover in subareas, are entered into the CCAMLR database. Indices of ice cover are calculated ... distributed by the National Snow and Ice Data Centre, Colorado, USA. Data consist of an image of the Antarctic ... of the distance of sea ice from CEMP sites, the northerly position of the sea ice edge, and the ...
Meeting Document : WG-EMM-95/11 : Autor(es): Agnew, D.J.