Résultats de la recherche
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Estimates of fish stock biomass around South Georgia in January/February 1985
fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... reduction in stock size to 10 – 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... CCAMLR in 1984 are discussed. Their effect on a recovery of the stocks seems, however, doubtful. File ... direc- t ed fishing for the species for two years on the premises of a normal recruit- ment. Minimum ... recruitment of one or two abundant year - 9 - classes. The dependance of the fishery on the a bund ance ... & BUREAU, 1984, table 50). 3.4 Champsocephalus gunnari Except for one haul yield i ng 1. 4 t/30 min ... in stock size to 10 - 20 % of that estimated for 1975/76. Similar values had, however, been found ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.
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TEMPORAL CLARIFICATION OF THE TRANSITION FROM BLUE PHASE FINGERLING TO EARLY JUVENILE BROWN PHASE IN NOTOTHENIA ROSSII FROM THE SOUTH SHETLAND ISLANDS
Abstract: Scales and whole otoliths were read for age determination of early stages of Notothenia ... was composed by blue phase fingerlings of 7-7.6 cm (TL) and age group 0 year and demersal young brown ... the interpretation of the rings, particularly in the central area of the scale. To clarify two issues ... sea is less than one year before migration to the demersal nearshore habitat; 2) the first well ...
Meeting Document : WG-FSA-09/32 : Auteur(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007
Abstract: During the seventeenth year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... collected. This represents a reduction by 33% on the 544 items recorded in 2005/06 and a decrease in mass of ... previous years: 73% during summer (265 items) and 27% during winter (100 items). After three consecutive ...
Meeting Document : WG-FSA-08/24 : Auteur(s): F. Le Bouard (UK)
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Review of biological characteristics of the Antarctic toothfish (Dissostichus mawsoni) and its distribution in Antarctic waters
of importance for the assessment of its biomass and identification of its stocks. The trophodynamics ... of D. mawsoni are mentioned only in brief. Most published materials refer to studies conducted in the ... Abstract: Results of published studies on the biology, biomass and distribution of the Antarctic ... toothfish (Dissostichus mawsoni) were reviewed. The review focused on those aspect of the species which are ...
Meeting Document : WG-FSA-98/37 : Auteur(s): Secretariat
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WG-KRILL-94
, WG-Krill WG-Krill-94/20 Suggested outline for the design and implementation of future near-synoptic ... -Krill-94/04 Parameters for the stochastic krill dynamics model (SKDM): selectivity and maturity D.J ... of krill in Area 48 reported to CCAMLR for the 1992/93 fishing season Secretariat WG-Krill-94/08 ... . Yakovlev and V.A. Bibik (Ukraine) WG-Krill-94/11 Towards a distribution of M/ for krill (Euphausia superba ...
Meeting
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Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
Antarctic seas for the period from 1985 to 1990 are analyzed to form an opinion about its growth, life ... (Hosie et al., 1988) for the Prydz Bay by data for 1981-1985. Basing on long-term observations, relations ... of Sodruzhestvo. E.superba growth rate ranges from 0.126- 0.133 mm per day in the first year 0f life ... to 0.028-0.041 mm per day in the fifth year under condition that E.superba grows 180 days per year ...
Meeting Document : WG-KRILL-93/45 : Auteur(s): E.A. Pakhomov (Ukraine)
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WG-FSA-91
Subarea 48.3 used as an example P.S. Gasiukov and R.S. Dorovskikh (USSR) WG-FSA-91/26 On assessing the ... Potential nursery areas for fish in the Prydz Bay region R. Williams (Australia) WG-FSA-91/36 Report on the ... documents Doc Number Title WG-FSA-91/01 Provisional and Annotated Provisional Agenda for the 1991 meeting of ... Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for ...
Meeting
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Fishery Report: Dissostichus eleginoides South Georgia (Subarea 48.3)
20% of B0 in the respective sample of any one year, for each year in the 35-year projection period ... provide an appropriate mean and CV of year class strength for this purpose, which includes mostly below ... catches would increase by between 2% and 3.6% over the reported figures depending on the year, for the ... on the informative priors for the two catchability parameters, and the intrinsic rate of increase, r ...
Document : Site Section: Publications
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Mackerel icefish size and age at South Georgia and Shag Rocks
(Spring). Mean total lengths (TL) of age-classes were determined for each year by examining length ... of age-classes were standardized to a common day of the year (16 January) based on the Bertalanffy ... modality in the length-frequency distributions. Lengths of age-classes derived by these two methods were ... not statistically different. Age-class 1 was found for all surveys at South Georgia but was absent for ...
Meeting Document : WG-EMM-03/7 : Auteur(s): A.W. North (United Kingdom)
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LETTER TO DRS REID, WATTERS AND JONES IN REGARD TO “DISAPPEARANCE OF TOOTHFISH FROM MCMURDO SOUND”
for more than 300 person-years, and in the process have gained considerable knowledge about the Ross ... and the southern Ross Sea, and recommendations for restoration.” We are concerned that this is the ... first sign that the Ross Sea ecosystem is being irreparably altered, and the 40-50 year time series of ... needs to be addressed without significant delay. Together we have worked in the Ross Sea and vicinity ...
Meeting Document : WG-EMM-08/20 : Auteur(s): D.G. Ainley, S.F. Ackley, K. Arrigo (USA), G. Ballard (New Zealand), J.P. Barry (USA), L. Blight (Canada), P. Broady, B. Davison (New Zealand), P. Dayton, A.L. DeVries, K. Dugger, J.T. Eastman, S.D. Emslie (USA), C. Evans (New Zealand), R.A. Garrott, G. Hofmann, S. Kim, G. Kooyman, S.S. Jacobs (USA), G. Lauriano (Italy), A. Lescroël (France), D.R. MacAyeal (USA), M. Massaro (New Zealand), S. Olmastroni (Italy), P.J. Ponganis (USA), E. Robinson (New Zealand), D.B. Siniff, W.O. Smith (USA), I. Sti