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Dynamics of abundance and state of Notothenia rossii rossii stocks on the Kerguelen Island shelf
Abstract: Population structure and dynamics of the abundance of Notothenia rossii rossii on the ... Kerguelen Island shelf from the beginning of the fishery to 1984 has been examined.Total and commercial ... calculation by mathematical modelling.Comparative estimates of the abundance and recruitment-remainder ratio ... for the period of 1970-1984 have been presented, the average age of recruitment has been stated ...
Meeting Document : WG-FSA-90/41 : Автор(ы): P.B. Tankevich and V.A. Shlyakhov (YugNIRO, USSR)
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) biomass
various definitions of strata. The total biomass in the area of 155 786 km2 was estimated to be 1.8225 x ... 106 t (Coefficient of Variation = 9.5%). This gives an estimate of mean density throughout the region ... of 11.7 t km-2. Although the estimate of the mean is not sensitive to the definition of strata, the ... Abstract: A large-scale acoustic survey of zooplankton stocks of the waters around South Georgia ...
Meeting Document : WG-KRILL-91/30 : Автор(ы): E. Murphy, I. Everson and A. Murray (United Kingdom)
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Oceanographic study of the Subarea 48.6 with sea-surface temperature (SST) anomaly and vertical profile of sea temperature (PST)
Abstract: The Oceanographic study of the Subarea 48.6 on the SST, SIC, PST, current and wind ... the mixed layer depths in research block5. The currents around the research block 4 and 5 ... study of the Subarea 48.6 with sea-surface temperature (SST) anomaly and vertical profile of sea ... vector was conducted. The lower SST corresponded to the higher SIC and vice versa. The PST indicates ...
Meeting Document : WG-SAM-2019/16 : Автор(ы): T. Namba, R. Sarralde, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert
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ESTIMATES OF NUMBERS OF KELP GULLS AND KERGUELEN AND ANTARCTIC TERNS BREEDING AT THE PRINCE EDWARD ISLANDS, 1996/97–2008/09
in December 2001 and December 2008. Four species are regular breeders at the islands: subantarctic ... tern S. virgata. The latter three species currently each have populations of below 150 breeding pairs ... the 1980s. Kerguelen tern numbers decreased and then recovered at Marion Island but numbers of the ... P.G. Ryan Title: ESTIMATES OF NUMBERS OF KELP GULLS AND KERGUELEN AND ANTARCTIC TERNS BREEDING AT THE ...
Meeting Document : WG-EMM-10/P5 : Автор(ы): P.A. Whittington, R.J.M. Crawford, B.M. Dyer and P.G. Ryan
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Outline details of the proposed aerial photographic survey at South Georgia for estimating breeding population sizes of land-based predators
Abstract: This paper describes current research plans to estimate the size of land-based marine ... with commercial fisheries. The research will also develop methodologies that reliably assess trends in ... the abundance of these populations. The research will focus upon predator species that depend upon ... develop new methods that reliably estimate predator population sizes whilst minimising the level of ...
Meeting Document : WG-EMM-01/24 : Автор(ы): P. Trathan and D. Briggs (United Kingdom)
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SUMMARY OF VME NOTIFICATIONS MADE UNDER CONSERVATION MEASURES 22-06 AND 22-07
-07 in the case of encounters with potential VMEs during the course of bottom fishing, and under CM 22 ... marine ecosystems (VMEs) are described in Conservation Measures (CM). Notifications are made under CM 22 ... -06 in other cases such as during research surveys. Notifications are held in the Secretariat’s VME ... registry. Since 2008, the Secretariat has received a total of 32 notifications of encounters with VMEs ...
Meeting Document : WG-EMM-11/07 : Автор(ы): Secretariat
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Estimates of numbers of kelp gulls and Kerguelen and Antarctic terns breeding at the Prince Edward Islands, 1996/97–2008/09
in December 2001 and December 2008. Four species are regular breeders at the islands: subantarctic ... tern S. virgata. The latter three species currently each have populations of below 150 breeding pairs ... the 1980s. Kerguelen tern numbers decreased and then recovered at Marion Island but numbers of the ... Abstract: Breeding numbers of Laridae and other surface-nesting seabirds have been monitored at ...
Meeting Document : WG-EMM-10/P05 : Автор(ы): P.A. Whittington, R.J.M. Crawford, B.M. Dyer and P.G. Ryan
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Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change
Abstract: The management of Antarctic krill and conservation of its predators requires ... and in the entire area, over 3 million crabeater seals can consume over 12 million tonnes of krill ... krill. High seal densities where found in the small-scale fishery management areas of the WAP, where ... could be an area of expansion for the fishery in the future. Uncertainty in krill and seal stock trends ...
Meeting Document : WS-MPA-11/24 : Автор(ы): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)
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Population, breeding, diet and conservation of Crozet shag Phalacrocorax [atriceps] melanogenis at Marion Island, 1994/95 to 2002/03
birds breeding in any given season. The decreases coincided with a period of warming and reduced ... precipitation at Marion Island and with a decrease in the number of gentoo penguins Pygoscelis papua breeding ... . Nototheniid fish and the decapod Nauticaris marionis continued to be important in the diet of Crozet shags ... 25% of the mature population did not breed in 1997/98, coincident with a strong El Niño Southern ...
Meeting Document : WG-EMM-03/17 : Автор(ы): R.J.M. Crawford, J. Cooper, B.M. Dyer, A.C. Wolfaardt, D. Tshingana, K. Spencer, S.L. Petersen, J.L. Nel, D.G. Keith, C.L. Holness, B. Hanise, M.D. Greyling and M. du Toit (South Africa)
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Modelling Movement of Antarctic Krill (MMAK): the importance of retention, dispersal and behaviour for krill distribution
the regional and local-scale processes that influence the distribution of krill in CCAMLR Area 48 ... Abstract: Effective management of the Antarctic krill (Euphausia superba, hereafter krill ... ) fishery requires an understanding of the controls on the distribution and abundance of krill ... . Particularly important are the pathways and timescales of movement and retention affecting krill distribution ...
Meeting Document : WG-EMM-17/31 : Автор(ы): S. Thorpe, E. Young and E. Murphy
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