Resultados de la búsqueda
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Dynamic model of krill Euphausia superba swarm
insects appear to disperse according to a reaction diffusion model with a constant diffusion coefficient ... . It was found that the vertical density pattern of krills' swarm, with a mean density of up to ... 1000 individuals/m3, is consistent with the insect model predictions. That is why cohesive forms of ...
Meeting Document : WG-EMM-95/68 : Autor(es): Kalinowski, J., Azzali, M.
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Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3
Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... the considered cases with the different growing parameters, with the exception of the case of fishing ...
Meeting Document : WG-FSA-92/21 Rev. 1 : Autor(es): C.A. Moreno and P.S. Rubilar (Chile)
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RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS
20th century but there are few locations with data before the 1950s. In addition, assessments of change ... in this region are hampered by the strong seasonal bias in sampling, with the vast majority of data ... century, with differential warming between summer and winter months and an indication that late 20th ... changes in heat fluxes associated with the SAM. In addition, we consider the implications that long-term ...
Meeting Document : WG-EMM-08/P03 : Autor(es): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb
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Zonal structure of zooplankton communities in the Southern Ocean south of Australia: results from a 2150 km continuous plankton recorder transect
were measured at 1-min intervals in conjunction with CPR samples. Additional physical data for the ... strongly correlated with frontal/oceanographic zones. These assemblages appeared to be structured by a ... with the seasonal ice zone, south of the northern SACCF. Although Euphausia superba larvae were a ... component of both of these assemblages, this species, together with appendicularia, was most abundant south ...
Meeting Document : WS-BSO-07/P6 : Autor(es): Hunt, B.P.V. and G. Hosie
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Unusual breeding by seabirds at Marion Island during 1997/98
species with an intermediate foraging range that eat mainly crustaceans, macaroni Eudyptes chrysolophus ... chicks of rockhopper penguins fledged with a slightly heavier mass than in other years. However, for both ... /99) breeding season. The unusual breeding by most of the seabirds coincided with the El Niño Southern ... Oscillation (ENSO) event of 1997/98. This synchrony contrasts with lagged responses to ENSO events of seabirds ...
Meeting Document : WG-EMM-03/13 : Autor(es): R.J.M. Crawford, C.M. Duncombe Rae, D.C. Nel and J. Cooper (South Africa)
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INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS
accounts for both the variation associated with sub-sampling of the random length frequency (LF) sample for ... Monte Carlo multinomial replicates of the observed age length key (ALK) with each ALK used to generate a ... % to 10%. When random ageing error was combined with sampling error the corresponding values were lower ... , with a corresponding range of around 4 down to 1. This reduction is due to the way the ageing error ...
Meeting Document : WG-SAM-09/08 : Autor(es): S.G. Candy (Australia)
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DATA QUALITY ASSESSMENT IN CCAMLR: REQUIREMENTS FOR MINIMUM INTEGRITY TESTING TO ENSURE THAT DATA ARE FIT FOR PURPOSE
upon the different requirements for the data, together with a recognition that, however thorough a ... errors and discrepancies are resolved in consultation with data owners/originators and, where possible ... review/reconciliation procedure with Members to ensure that CCAMLR data are consistent and current with ...
Meeting Document : WG-SAM-09/05 : Autor(es): Secretariat
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The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin
exploited since the beginning of the 1970's with reported annual catches exceeding 50- 100 000 tomes in ... some years. Champsocephalus gunnari has many characteristics typical of Antarctic fish species with ... ability to reproduce at an early age coupled with a comparatively high fecundity and growth performance ... capacity to rebuild than species with the slower reproductive rates common in other notothenioids. Author(s ...
Meeting Document : WG-FSA-96/24 : Autor(es): Everson, I., Kock, K.-H.
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Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea
swarms identified with a Simrad EK60 (38 kHz, 120 kHz) echosounder were grouped into 4 categories ... -sectional areas of swarms were significantly larger inshore, with a mean value of 120 m 2 in the 0 to 50 km ... was also significantly greater, with an average density of 95 ind. M–3 compared to between 24 and 31 ... , dense swarms throughout the survey area, and this trend increased with decreasing distance from shore ...
Meeting Document : WG-EMM-10/P09 : Autor(es): T. Klevjer, G.A. Tarling and S. Fielding
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Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1
overlap in Area 48, with particular emphasis on Subarea 48.1. We used habitat utilization data for ... in Subarea 48.1. In general, overlap of summer and winter foraging habitats with krill catches in ... might affect the distribution of fishing effort. A comparison of CEMP parameters from two years with ... a Subarea limit of 155,000 tonnes provides a catch consistent with the objectives of Article II of ...
Meeting Document : WG-EMM-14/36 : Autor(es): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)