Résultats de la recherche
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A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
Antarctic krill (Euphausia superba) across the Scotia Sea using data from the CCAMLR 2000 Krill Synoptic ... reconstruction of krill distribution, given the data. The Bayesian framework also allows intrinsic calculation of ... estimated due to the sparseness of data in these regions. The MaxEnt formalism allows an objective choice of ... extremely sparse survey data (only 0.6% of the survey area was directly acoustically sampled), and enhances ... Scotia Sea using data from the CCAMLR 2000 Krill Synoptic Survey of Area 48 (CCAMLR-2000 Survey) and to ... an objective choice of the most probable reconstruction of krill distribution, given the data. The ... recon- struction, since the data consist of point estimates of krill density derived from echo ... data can be considered as an image in which krill densities are plotted on a rectangular grid, with ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Auteur(s): Heywood, B.G., A.S. Brierley and S.F. Gull
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Midwater trawl catchability in relation to krill and possible ways of assessing gross catch
the basis of data obtained from AtlantNIRO expeditions from 1983 to 1990 in the Scotia Sea. A ... Paper Title: Midwater trawl catchability in relation to krill and possible ways of assessing ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... (Methodical Instructions ... 1983) was employed for the collection of data on krill escapement through the ... distributional characteristics of targetted krill concentrations and based on data from 250 hauls in various ... pass through the rope and broad-mesh sections. Data on krill retention by fine-meshed chafers ... , escapes. These data indicate that krill filtration in the belly of the trawl is an unavoidable ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov
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The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
, Antarctica, and its overlap with the krill fishery Abstract / Description: The foraging ranges of six female ... when the sea became ice free to the coast. Concentrations of krill, Euphausia superba, which have in ... . Robertson Land Coast (approximately 150 000 pairs) and any future harvest of krill in the region. The ... in the South Shetland and South Orkney Islands and reflects the distance offshore of krill, one of ... 17 de enero, fecha en la cual el mar esta libre de hielo hacia la costa. Los cardumenes de kril ... 150000 parejas), y cualquier recoleccion de kril que se pudiera realizar en el futuro en la zona. La ... distancia costa afuera a la que se encuentra el kril, una de sus fuentes de alimento mas importante. 1 ... 1991/92 breeding season was determined by satellite tracking. We report here data that show for the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Auteur(s): Kerry, K.R., J.R. Clarke and G.D. Else
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Krill Fishery Report 2017
Description / Abstract: Krill Fishery Report 2017 ... those on the length, sex and maturity stage of krill, fish by-catch and the collection of acoustic data ... the krill fishery was provided in WG-FSA-16/04 using data on fish by-catch in the krill fishery from ... increase in the fish by-catch reported in the commercial krill catch data. Incidental mortality of ... Reported catch in 2016 and 2017 Scientific observer data reporting Non-target catch Fish by-catch ...
Document : Site Section: Publications
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Krill Fishery Report 2018
Description / Abstract: Krill Fishery Report 2018 ... length, sex and maturity stage of krill, fish by-catch and the collection of acoustic data on krill. The ... . There are no by-catch limits in place for the krill fishery, however, fish by-catch data are available ... from vessel-reported haul-by-haul data as well as from observer data. Detailed information on the fish ... specified in CM 23-04. 13 18. The relative frequency of fish by-catch in the C1 data has shown ...
Document : Site Section: Publications
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Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01
surveys in one season would provide information on short-term variability that could be used to set data ... in the eastern box (80.4 g m-2). Analysis of transect data obtained in the western box in the ... previous single ‘snap-shot’ acoustic survey data have allowed. This is a crucial step in the elucidation of ... Paper Title: Significant intra-annual variability in krill distribution and abundance at South ... acoustic surveys has been to provide data on krill abundance to link with the performance of various ... responses between predator performance and krill abundance. Data on the condition of mackerel icefi sh ... . Analysis of krill density data by transect from previous surveys revealed that a minimum of four ... developed for analysis of acoustic data from the CCAMLR 2000 Krill Synoptic Survey of Area 48. Krill ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Auteur(s): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst
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CCAMLR ecosystem monitoring and a feedback management procedure for krill
Paper Title: CCAMLR ecosystem monitoring and a feedback management procedure for krill Abstract ... the krill fishery and this paper examines ways in which the information being obtained from the ... available and what should CCAMLR do in the meantime? Document WG-Krill-91126. CCAMLR, Hobart, Australia: 21 ... las actividades de pesca. La pesqueria de kril es la * Faculty of Environmental Sciences, Griffith ... -CEMP and the Scientific Committee to agree that "analysis and evaluation of submitted CEMP data and ... (iii) it is feasible. WG-CEMP now has the data available to begin examining, using analytical and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 345–350 : Auteur(s): Constable, A.J.
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
Paper Title: Is current management of the Antarctic krill fishery in the Atlantic sector of the ... krill (Euphausia superba) fishery in the Atlantic sector of the Southern Ocean, and current knowledge ... about the state of the regional krill stock. In this region, krill fishing is permitted in an area of ... . There is some evidence for a decline in the abundance of krill in the 1980s, but no evidence of a ... introduce the data available for analysing changes in the krill stock; to compare the effective catch lim ... krill that the fish- ery could catch in each fishing season (December to November) if associated ... provided data on krill biomass in 2 million km2 of Sub- areas 48.1 to 48.4 in January 2000. (iii ... (e.g. annual) events. Net data have been used to indicate changes in krill abundance (e.g. Atkinson ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Auteur(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins
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Preliminary model of krill fishery behaviour in Subarea 48.1
data over the period 1989 to 1992. The distribution of catches predicted by the model, which is ... Paper Title: Preliminary model of krill fishery behaviour in Subarea 48.1 Abstract / Description ... : A simple model of the behaviour of the krill fishery in FAO Statistical Subarea 48.1 (South Shetland ... fishery data over the period 1989 to 1992. The distribution of catches predicted by the model, which is ... comportamiento de la pesqueria de kril en la SubArea estadistica 48.1 de la FAO (islas Shetlands del Sur y ... periods (months were assumed to be 30 days long). Data from the Chilean fishery in Subarea 48.1 were ... used to parameterise the model (Table 1). These data only cover a part of Subarea 48.1, shown in ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Auteur(s): Agnew, D.J. and V.H. Marín
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
Paper Title: Characteristics of krill aggregations in the South Sandwich Islands subarea in ... February 2000 it was observed that krill was present in non-aggregated and scattered forms, as well as in ... swarms. Differences between spatial distribution patterns of different krill aggregation forms in ... characteristics of some 2 400 krill swarms detected in the study area were sized acoustically and are described in ... data on fi shing intensity and hydroacoustical method. Document SC-CAMLR-VII/BG/10. CCAMLR, Hobart ... surveys (1981). Core datasets (acoustic, biological and CTD data) obtained during the CCAMLR 2000 Krill ... the probabilistic–statistical theory of trawl fi shing and data on krill distribution from hydro ... of distribution characteristics of the fi shing object. Document WG-Krill-91/16. CCAMLR, Hobart ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Auteur(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky