Résultats de la recherche
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... LogL Two types of trawls were used for kriU sampling: an Isaacs-Kidd midwater trawl with a 6.0 sq. m ... previous period (1986 to 1988) and for an increase in krill biomass in the area. The data in Table 2 ... in krill biomass observed in the area in 1990 is linked with the abundant 1986 and 1987 year-classes ... and with a diminished rate of emigration of krill of these year-classes from the area in 1989/1990 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Auteur(s): Bibik, V.A. and V.N. Yakovlev
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Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current
Author(s): J.R. Ashford, C.M. Jones, E.E. Hofmann, I. Everson, C.A. Moreno, G. Duhamel and R. Williams Title: Otolith chemistry indicates population structuring by the Antarctic Circumpolar Current Approval: Approved
Meeting Document : WG-FSA-08/P05 - Article : Auteur(s): J.R. Ashford, C.M. Jones, E.E. Hofmann, I. Everson, C.A. Moreno, G. Duhamel and R. Williams
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European Union – Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2
Abstract: The longline fishery for toothfish in the Ross Sea currently operates as an Olympic ... overall catch limits have remained relatively stable and as a consequence the fishing opportunities for ... are impacted by management measures. There is therefore a requirement for the routine production of ... fishery. The number of vessels operating in the fishery has progressively increased in recent years yet ...
Meeting Document : WG-SAM-14/19 : Auteur(s): Delegation of the European Union
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Beach debris survey – Main Bay, Bird Island, South Georgia, 2005/06
101% more during summer, a mass increase of 1.19kg overall (29%). For the third consecutive year ... multifilament (multi-strand) gillnet were found on the survey beach this year (mainly in winter) compared to 11 ... Abstract: During the sixteenth year of standardised beach surveys of man-made debris at Bird ... , nylon line was absent from Bird Island, an encouraging result after the peak of 546 pieces in 1995/96 ...
Meeting Document : SC-CAMLR-XXVI/BG/16 : Auteur(s): Delegation of the United Kingdom
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Status and trends of Adelie penguin populations in the Ross Sea region
earlier counts. Populations at nearly all rookeries have increased in size over the last 10–20 years ... . Possible reasons for this, and for annual fluctuations in numbers breeding, include seasonal variations in ...
Meeting Document : WG-CEMP-92/23 : Auteur(s): R.H. Taylor, P.R. Wilson and B.W. Thomas (New Zealand)
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CEMP cameras data validation experiment at the Galindez Island gentoo penguin (Pygoscelis papua) colonies
Abstract: The two seasons of the data validation experiment provided for pictures from time-lapse ... ) penguin colonies are discussed. During 2017/18 and 2018/19 seasons, biologists-winterers at Vernadsky ... -lapse camera data for both seasons. The standard deviation for each event varies from ±1 to ±3 days for ... responsibility for releasing documents: Ukraine ...
Meeting Document : WG-EMM-2019/59 : Auteur(s): P. Khoetsky, A. Dzhulai, V. Smagol, G. Milinevsky, I. Dykyy, A. Simon, M. Telipska, E. Dykyi, I. Parnikoza and L.Pshenichnov
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Draft: differences in the foraging strategies of male and female Adelie penguins
of breeding Adelie penguins were demonstrated at two widely separated locations over a number of ... years. Female penguins tended to make longer foraging trips than males, ranged greater distances more ... on fish throughout chick rearing. The importance of these results to monitoring programs such as the ...
Meeting Document : WG-EMM-95/46 : Auteur(s): Franchi, E., Kerry, K., Clarke, J.
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... to 3 877) and an unrepresentative coverage of the shelf from year to year. However, two pairs of ... needed for the final maturation of the gonads. Resume La composition du regime alimentaire et ... ). An unusually high proportion of sexually mature fish showed no signs of the gonad development ... in the face of food shortage an adaptative strategy is to sacrifice egg production and maintain body ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Auteur(s): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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Classification of Southern Ocean krill and icefish echoes using Random Forests
two or more echosounder frequencies. For commonly used frequencies, however, the differences for krill ... underestimated when those methods are used for target identification. Random forests are an objective means for ... Abstract: Target identification remains a challenge for acoustic surveys of marine fauna ... are similar to those for many co-occurring fish species that do not possess swim bladders. At South ...
Meeting Document : WG-EMM-16/23 : Auteur(s): N. Fallon, S. Fielding and P. Fernandes
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IDENTIFYING PATTERNS IN DIET OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) AT SOUTH GEORGIA USING BOOTSTRAPPED CONFIDENCE INTERVALS OF A DIETARY INDEX
confidence intervals for an index of relative importance (% IRIDC) of prey categories. Diet varied ... following year (2005). This may have been a result of mortality of age 2+ and 3+ fish, which were more krill ... dependent than 1+ fish. Younger fish appear to have survived, leading to an increase in the estimated ... significantly between years and age classes but there was little regional difference in diet. In general diet ...
Meeting Document : WG-FSA-08/29 : Auteur(s): C.E. Main, M.A. Collins, R. Mitchell and M. Belchier (UK)