Résultats de la recherche

1. Relationships between the distribution of whales and Antarctic krill Euphausia superba at South Georgia

   Abstract:  The distribution of whales and krill in two survey boxes north of South Georgia was ... examined by comparing sightings and underway acoustic data collected as part of a multidisciplinary ... research cruise during January/February 1998. A total of 222 cetaceans of 10 species was recorded with ... frequent. The largest aggregation of cetaceans (21 southern right whales, 18 fin whales (Balaenoptera ...

   Meeting Document : WG-EMM-99/30 : Auteur(s): K. Reid, A.S. Brierley (United Kingdom) and G.A. Nevitt (USA)

2. ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA IN MAN-MADE DEBRIS AT BIRD ISLAND, SOUTH GEORGIA DURING THE 2007 WINTER AND 2007/08 BREEDING SEASON

   Abstract:  Results of the survey of entanglements of Antarctic fur seals Arctocephalus gazella at ... summer (November 2007 to March 2008) are reported here. During the reporting period of 1 April 2007 to 31 ... March 2008 a total of 36 entangled seals were observed. Sixteen and 20 entanglements were observed in ... for 25% of winter and 10% of summer entanglements. During winter, synthetic string/longline material ...

   Meeting Document : WG-FSA-08/27 : Auteur(s): E.W.J. Edwards (UK)

3. Water mass distribution and circulation west of the Antarctic peninsula and including Bransfield Strait

   Abstract:  Historical hydrographic data from Bransfield Strait and the region west of the ... Antarctic Peninsula were analyzed to provide a description of water mass distributions and circulation ... patterns. Circumpolar Deep Water (CDW), which is characterized by temperatures above 1.0°C, salinities of ... this water mass floods the continental shelf west of the Antarctic Peninsula. CDW is also found in ...

   Meeting Document : WG-EMM-95/67 : Auteur(s): Smith, D.A., Lascara, C.M., Klinck, J.M., Hofmann, E.E.

4. Spatial scales of benthic invertebrate habitats from fishery by catch and video transect data in the Ross Sea region

   presence of sponge and/or gorgonian bycatch are identifiable, as are several areas of dense fishing effort ... with no evidence of sponge or gorgonian presence. Identifiable sponge and/or gorgonian habitats ... occurred at a typical scale of 10-30 km 2, though some sponge habitats appeared larger. Spatial analysis of ... these data allows the detectability of sponges and gorgonian corals to be estimated, along with changes ...

   Meeting Document : WG-EMM-10/28 : Auteur(s): S.J. Parker, R.G. Cole and S.M. Hanchet (New Zealand)

5. A tale of two islands: contrasting fortunes for sub-Antarctic skuas at the Prince Edward Islands

   Abstract:  Subantarctic skuas Catharacta antarctica are key predators of burrowing petrels at sub ... -Antarctic islands, and can be used to monitor the health of burrowing petrel populations. A survey of skuas ... December 2001. Prince Edward Island (46 km 2) remains free of introduced mammals, whereas Marion Island ... (290 km 2) had a feral population of cats from the 1950s to 1980s, and still supports a large ...

   Meeting Document : WG-EMM-10/P03 : Auteur(s): P.G. Ryan, P.A. Whittington and R.J.M. Crawford

6. A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data

   variable probability (VP) sampling of fish that were aged. Sub-sampling of random length frequency (LF ... ) data used to obtain the samples of fish for ageing used length-bin sampling involving a fixed sample ... size per bin. Estimation of the VB parameters used a definition of the maximum likelihood which took ... into account VP sampling due to length-dependent selectivity of trawl fishing and also accounted for ...

   Meeting Document : WG-FSA-SAM-06/07 : Auteur(s): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)

7. Preliminary examination of otolith microchemistry to determine stock structure in Antarctic toothfish (Dissostichus mawsoni) between SSRU 88.1C and 88.2H

   Abstract:  Life history characteristics of Antarctic toothfish (Dissostichus mawsoni), were ... concentrations in the otolith edge and then to (ii) assess the potential of natal signatures to distinguish ... shown. This resulted in the correct classification of 63% of fish overall to their original capture ... sites. Discrimination of otolith natal signatures using Al:Ca and Zn:Ca showed greater classification ...

   Meeting Document : WG-SAM-14/33 : Auteur(s): R. Tana, B.J. Hicks, C. Pilditch and S.M. Hanchet (New Zealand)

8. Proposed continuation of a multi-Member longline survey on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2019/20 by Japan, South Africa and Spain

   assessments of the D.mawsoni stock in this subarea (FSA-18/34). The continuation of the three-member research ... proposal for 2019/20 season is presented to ensure continuity of previous research activities. Data and ... investigations about the population structure and various demographic parameters of Antarctic toothfish ... techniques, pop-up tags and genetic analysis will provide the basis for the development of spatial population ...

   Meeting Document : WG-SAM-2019/13 Rev. 1 : Auteur(s): Delegations of Japan, South Africa and Spain

9. Engaging ‘the crowd’ in citizen science and remote sensing to learn about habitat affinity of two Southern Ocean seals

   presence/absence patterns of the Weddell seal (Leptonychotes weddellii), and has recently been adapted for ... efficient method to screen large numbers of images (and hence area) for undertaking census counts of Weddell ... images of the pack ice acquired during October 2018 in the Weddell Sea to identify presence/absence of ... 852 VHR images, composed of a series of tiles called “maps”, across both campaigns. The circum ...

   Meeting Document : WG-EMM-2019/37 : Auteur(s): M.A. LaRue, D.G. Ainley, J. Pennycook, K. Stamatiou, M. Dozier, J. Saints, L. Sales, N. Nur, S. Stammerjohn and L. Barrington

10. Species profile of mackerel icefish (Champsocephalus gunnari)

    and became the target species of fisheries in many parts of the low-Antarctic from 1975 to 1990 ... . Exploitation has been limited to South Georgia and Heard and McDonald Islands since the second half of the 1990 ... ’s with annual catches of a few thousand tonnes in each of the two areas. Aspect of the biology and ... exploitation of the species have been summarized in Kock and Everson (2003) and Kock (2005). Additional ...

    Meeting Document : WG-FSA-07/12 : Auteur(s): K.-H. Kock (Germany) and I. Everson (UK)

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