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Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)
% of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... -dependent predators. It is concluded that although there is a spatial overlap of the dependent species and ... the fishery, this is not sufficient to amount to a functional overlap. File: 02kasatkina-ivanova.pdf ... Soviet fl eet, using a probability statistical theory of fi shery systems developed at AtlantNIRO. The ... is a spatial overlap of the dependent species and the fi shery, this is not suffi cient to amount to ... a functional overlap. Résumé Ce document présente une évaluation de l’impact de la fl ottille ... commerciale sur les populations de krill en différents mois des saisons de pêche de 1987 à 1990 dans les ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Autor(es): Kasatkina, S.M. and V.F. Ivanova
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
many aspects of its variability have been extensively described in scientific literature. A summary of ... a number of census surveys had been conducted. Results of the nine most representative surveys ... . Unfavourable conditions correspond to a biomass of an order of magnitude less. Short-term fluctuations of krill ... in a month. It also usually decreases in spring, regardless of the type of water circulation. Annual ... of its variability have been extensively described in scientific literature. A summary of recent ... in the scale of krill swarms and to attempt to determine more reliable values of its biomass after a ... . Unfavourable conditions correspond to a biomass of an order of magnitude less. Short-term fluctuations of ... eight times in a month. It also usually decreases in spring, regardless of the type of water ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks
the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... simulation studies of krill distribution and stock assessment. A standard large-scale multi-disciplinary ... survey, followed by processing of the data obtained using diverse methods may be viewed as a better ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Autor(es): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov
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Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari
was zero at Macquarie Island and very low at Kerguelen; most was associated with a single vessel using ... a netsonde cable while targetting C. gunnari. Most mortality associated with both longliners and ... trawlers was of white-chinned petrels, with a lesser mortality of albatross species. Mortality rates ... associated with a single vessel using a netsonde cable while targetting C. gunnari. Most mortality ... associated with both longliners and trawlers was of white-chinned petrels, with a lesser mortality of ... dominicains (Larus dominicanus). Les petrels a menton blanc (Procellaria aequinoctialis) n'etaient ... frequemment rencontres qu'8 Kerguelen. Pendant les chalutages, lamortalite des oiseaux etait nulle a l'ile ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Autor(es): Williams, R. and D. Capdeville
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
1976/77-1986/87. In most of the seasons analysed, the estimates covered a near-bottom layer in about 1 ... tons. The changes in the biomass level are first of all a result of periodical fluctuations in the ... and, at the same time, there has been a gradual decline in the P. georgianus stock. File: 06-Mucha ... seasons 1976;77-1986/87. In most of the seasons analysed, the estimates covered a near-bottom layer in ... thousand tons. The changes in the biomass level are first of all a result of periodical fluctuations in ... been observed and, at the same time, there has been a gradual decline in the P. georgianus stock ... . La methode de l'aire balayee a ete utilisee pour estimer les changements de densite de la biomasse ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Autor(es): Mucha, M. and W. Ślósarczyk
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Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008
north and northwest of South Georgia, Antarctica, during austral winters from 2002 to 2008. A total of ... around South Georgia. Electrona antarctica was not a major component of the recent mesopelagic ... contrast, P. choriodon, which is known as a south temperate species, became dominant in recent samples ... Georgia, Antarctica, during austral winters from 2002 to 2008. A total of 10 myctophid species were ... . Electrona antarctica was not a major component of the recent mesopelagic ichthyofauna in this area ... , which is known as a south temperate species, became dominant in recent samples. Additionally, the size ... a krill-alternative pathway in the Antarctic marine food web is attracting a great deal of atten ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Autor(es): Iwami, T., M. Naganobu, K. Taki and M. Kiyota
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
. There is some evidence for a decline in the abundance of krill in the 1980s, but no evidence of a ... recent years. This suggests that fishing at the trigger level would be equivalent to a long-term ... the risk of adverse impacts which might occur as a result of concentrated fishing in sensitive areas ... Road Cambridge CB3 0ET United Kingdom Email – sih@bas.ac.uk A. Atkinson Plymouth Marine ... tonnes year–1, since 2009. There is some evidence for a decline in the abundance of krill in the 1980s ... , but no evidence of a further decline in recent decades. Local-scale monitoring programs have been ... equivalent to a long-term exploitation rate (annual catch divided by biomass) of <7%, which is below the 9.3 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Autor(es): 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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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP). A ... parameters. Results are discussed in comparison with data from a declining Adélie penguin population in the ... in this paper provide a basis for the development of data reporting formats for CEMP Standard Method ... AFTER 12 YEARS OF STUDY J. Clarke , L.M. Emmerson, A. Townsend and K.R. Kerry Australian Antarctic ... under the CCAMLR Ecosystem Monitoring Program (CEMP). A life table was constructed, and predicted ... comparison with data from a declining Adélie penguin population in the Ross Sea studied during the 1960s ... fi shery regulations. The data collection and analysis methods outlined in this paper provide a ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Autor(es): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
shelf communities ideally incorporates a range of data on physical, environmental and biological ... Peninsula and the South Shetland Islands, the data indicate a two-layered pattern based on standardised ... physical oceanographic data reveals a pattern of shelf faunal zonation: the benthic invertebrate ... incorporates a range of data on physical, environmental and biological properties. Analysis of the benthic ... Islands, the data indicate a two-layered pattern based on standardised total biomass data and the ... composition of phyla that contribute to that biomass. An examination of physical oceanographic data reveals a ... assemblages d'invertébrés de la mégafaune benthique des habitats du plateau dans le secteur Atlantique, à ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Autor(es): Lockhart, S.J. and C.D. Jones
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
Abstract / Description: This paper presents data on benthos retrieved in bottom trawls during a survey of ... examine a potential impact of bottom trawling on benthic communities in this region. The benthos was ... Prydz Bay. Also, the results indicate that there is a need to examine the nature of benthic communities ... data on benthos retrieved in bottom trawls during a survey of demersal finfish species in Prydz Bay by ... Australia in the 1990/91 season. The data collected are used to examine a potential impact of bottom ... results indicate that there is a need to examine the nature of benthic communities in areas in which ... par l'Australie pendant la saison 1990/91. Les donnees collectees servent a l'examen des effets ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Autor(es): Constable, A.J.