Résultats de la recherche
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Estimating the abundance of pack-ice seals off east Antarctica
. Sighting surveys were undertaken along almost 10,000 km of survey transect from an icebreaker and two ... helicopters to estimate the density of seals hauled out on the ice in survey strips. The probability of ... -linked dive recorders were deployed on a sample of seals to estimate the probability of seals being ... hauled out on the ice at any time of day. Due to non-random placement of survey transects, model-based ...
Meeting Document : WG-EMM-05/23 : Auteur(s): C. Southwell (Australia), D. Borchers, C. Paxton (United Kingdom), B. de la Mare (Canada), P. Boveng (USA), A.S. Blix and E.S. Nordoy (Norway)
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SCAR-MARINE BIODIVERSITY INFORMATION NETWORK 2010 AND BEYOND
(financial or in-kind), on an equitable basis, to sustain and further the services SCAR-MarBIN presently ... and open access to this information. The two main achievements of SCAR-MarBIN are the development of a ... Change on its ecosystems, Antarctic marine biodiversity information has to be widely published ... , which aggregates the information on the web portal (90 datasets; 1,000,000 records). SCAR-MarBIN is ...
Meeting Document : CCAMLR-XXVII/BG/35 : Auteur(s): Delegation of Belgium
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Peches exploratoires dans la sous-zone 58.6, resultats des campagnes 1983 a 1995
only one Nototheniid fish Dissostichus eleginoides. The other species have no future for a commercial ... -adults and adults as observed in the division 58-5-1 (Kerguelen) located more easternly. Two geographical ... areas have been specially identified. Trends in yield are however not stable from one year to another ... and even along one fishing experiment despite a limited fishing effort. Two hypothesis are proposed to ...
Meeting Document : WG-FSA-95/10 : Auteur(s): Duhamel, G.
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Fishing gear, marine debris and oil associated with seabirds at Bird Island, South Georgia, 2002/03
longline hooks in offal and bycatch is of concern. Based on items found in regurgitates, an estimated 630 ... , though numbers of both decreased slightly since last year. The quantity of fishing gear associated with ... longline hooks and/or snoods were ingested by wandering albatross chicks at South Georgia this year. Hooks ... such annual report. As in most previous years, more items of fishing gear (mostly longlining gear) and ...
Meeting Document : SC-CAMLR-XXII/BG/09 : Auteur(s): Delegation of the United Kingdom
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Composition and vertical distribution of the benthopelagic ichthyofauna of the southern part of the Kerguelen ridge
trawls during the integrated surveys in December 1977 and in January 1978 on Elan Bank consisting of two ... rostrata and Alepocephalus sp. cf. antipodiana. The paper contains an annotated list of species and a brief ... with depth and they were quite abundant. Most abundant on Elan Bank were Macrourus whitsoni, Antimora ...
Meeting Document : WG-FSA-96/13 : Auteur(s): Piotrovsky, A.S.
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EXTRAPOLATING CONTINUOUS PLANKTON RECORDER DATA THROUGH THE SOUTHERN OCEAN USING BOOSTED REGRESSION TREES
estimate abundances of O. similis through the Southern Ocean. We present a number of methods for ... -validation). The area under the ROC for the model predicting presence was 0.77 indicating good discrimination ... , called BRT (Boosted Regression Trees), to data on the distribution of Oithona similis, a small cyclopoid ... be done on a tow by tow basis as there is significant within-tow correlation. (2) Spatial cross ...
Meeting Document : WG-SAM-08/12 : Auteur(s): M.H. Pinkerton, A.N.H. Smith (New Zealand), B. Raymond, G. Hosie (Australia) and B. Sharp (New Zealand)
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The toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2016/17
region are precautionary and we recommend extending the current research plan for 2018 season. No ... in the 2018 season. Catch rates, length frequency data, access to research blocks and Chapman biomass ... estimates for the North and South areas all indicate that the current catch limits in the Amundsen Sea ... validated age data are currently available since 2014 for the North, and for 2014, 2015, and 2017 from the ...
Meeting Document : WG-FSA-17/39 : Auteur(s): S. Parker and S. Mormede
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Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: Investigating the roles of ocean and sea ice transport
variability has implications for the ecosystem around the island. The inclusion of sea ice motion leads to the ... identification of source regions for the South Georgia krill populations additional to those identified when only ... pathways of krill have until now been on regional scales and have not taken explicit account of sea ice ... Modelling (OCCAM) project model together with satellite-derived sea ice motion vectors to examine the ...
Meeting Document : WG-EMM-07/P10 : Auteur(s): S.E. Thorpe, E.J. Murphy and J.L. Watkins (United Kingdom)
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Results of 2016 pop-off satellite archival tagging of Antarctic toothfish in the Ross Sea region
partial). On the northern seamounts, two of 3 PSAT tags scheduled to pop-off on February 1, 2017 reached ... objectives were to characterize movement and habitat preferences, compare two different commercially ... after the 2015/16 toothfish fishing season had ended. A total of 10 PSAT tags from two manufacturers ... the northern seamounts in the austral winter, for a total of 15 PSAT releases. Of the 10 PSAT releases ...
Meeting Document : WG-SAM-17/33 : Auteur(s): C.D. Jones and S.J. Parker
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Krill density, biomass, proportional recruitment and recruitment index in the elephant island region during the period 1977 to 1997
/95 and an average 1995/96 krill year-class (below average for proportional recruitment, average for ... indices for this time series. New survey results of the past two seasons indicate a very successful 1994 ... Abstract: The Elephant Island long-term data set was updated for krill density and proportional ... absolute recruitment). After a period of low krill density in the area for almost a decade, krill density ...
Meeting Document : WG-EMM-97/29 : Auteur(s): Loeb, V., Siegel, V., Gröger, J.