Résultats de la recherche
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Effect of two natural repellents on the depredation of mackerel baits by white-chinned petrels (Procellaria aequinoctialis)
. We report preliminary testing of potential seabird deterrents in longline fisheries around the sub ... . Pierre (New Zealand) Title: Effect of two natural repellents on the depredation of mackerel baits by ... . Petrels readily consumed all untreated baits. However, there were significant differences among the six ...
Meeting Document : WG-FSA-07/18 : Auteur(s): N. Gasco (France) and J.P. Pierre (New Zealand)
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Report of scientific observations of commercial krill harvest aboard the Japanese stern trawler Chiyo Maru No. 5 2 August 2003–21 September 2003
, biological measurements of krill, product types, vessel and marine mammal observations are described in the ... CCAMLR Scientific Observers Manual. Summary of the fishing efforts, processing, fish by-catches ... report. The trawler made remain trips the west and north areas of South Georgia Island during observation ... . 5, from 4 August 2003 to 21 September 2003. The observation was essentially undertaken following the ...
Meeting Document : WG-EMM-04/42 : Auteur(s): T. Hayashi, M. Naganobu and K. Taki (Japan)
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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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): P. Trathan and D. Briggs (United Kingdom)
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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 : Auteur(s): P.A. Whittington, R.J.M. Crawford, B.M. Dyer and P.G. Ryan
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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 : Auteur(s): S. Thorpe, E. Young and E. Murphy
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A system-of-equations approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes camtschaticus
variable, lessening the effect of measurement errors in estimation. The dynamic features of the underlying ... properties of a delay-difference model. The framework shares a common spawner-recruit function across age ... approach to modeling age structured fish populations: the case of Alaskan red king crab, Paralithodes ... Abstract: This paper presents a simultaneous system-of-equations approach to modeling age ...
Meeting Document : WS-CRAB-93/23 : Auteur(s): J.A. Greenberg, S.C. Matulich and R.C. Mittelhammer (USA)