Résultats de la recherche

1. ECOSYSTEM SERVICES OF THE SOUTHERN OCEAN

   easily be adapted to fit an ecosystem services evaluation framework. Here we provide a brief review of ... more readily understood, for example by policy-makers and non-scientists. Ecosystem-based management ... services may help to provide a common currency for balancing these objectives. However, the importance of ... Southern Ocean ecosystem services, and outline preliminary work towards an assessment of their distribution ...

   Meeting Document : WG-EMM-11/21 : Auteur(s): S.M. Grant, S.L. Hill and P.N. Trathan (UK)

2. Environmental variability effects on marine fisheries: four case histories

   and include ecosystem and environmental effects. Therefore, we review some examples of exploited ... strategies for exploited fisheries must include effects of environmental variability. In particular ... requires an understanding of where linkages between the physical environment and the species of interest ...

   Meeting Document : WG-EMM-97/66 : Auteur(s): Hofmann, E.E., Powell, T.M.

3. Food and feeding of two Channichthyids, Champsocephalus gunnari and Chaenocephalus aceratus, around Elephant Island and in the South Shetland Islands (Subarea 48.1) in 2001 and 2002

   krill and other crustaceans as well as on fish. C. aceratus smaller than 30 – 35 cm relied primarily on ... ‘Polarstern’. C. gunnari fed almost exclusively on krill (Euphausia superba) in both years. C. aceratus fed on ...

   Meeting Document : WG-FSA-02/73 Rev. 1 : Auteur(s): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)

4. Maximum entropy reconstruction of stock distribution and inference of stock density from line-transect acoustic survey data

   Abstract:  We present a maximum entropy (MaxEnt) method for inferring stock density and mapping ... across the whole survey area that is both consistent with the observed data and for which the entropy is ... 80 km. Survey data were integrated at 0.5 km intervals along ten 80 km transects, giving ... approximately 1600 observed data. We inferred krill density for all 32000 0.5 x 0.5 km cells in the area. The ...

   Meeting Document : WG-EMM-02/35 : Auteur(s): A.S. Brierley, S.F. Gull and M.H. Wafy (United Kingdom)

5. Net sample validation of acoustic techniques used to identify and size Antarctic krill

   collected with an RMT8. Around 80 % of the targets thought to be krill on the basis of their appearance on ...

   Meeting Document : WG-EMM-97/46 : Auteur(s): Watkins, J.L., Brierley, A.S.

6. Longline sink rates on a bottom autoline vessel in New Zealand: draft

   have quite noticeable effects on line sink rate for 20- 40 m either side of the attached weight. Given ... collected initially to give an information baseline. Further trials were then conducted using added weights ... rapid attachment method for Time Depth Recorders was also developed and is documented. The study found ... the middle of an unweighted longline of this design sinks to 10m in a mean time of 63.0 seconds (n ...

   Meeting Document : WG-FSA-98/51 : Auteur(s): N.W. McL. Smith (New Zealand)

7. Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins

   natural predators. Here, we report a novel method for assessing prey availability to an important krill ... Abstract:  Predator-prey interactions play an important role in determining the dynamics of ... the surface distribution of penguins and krill distributed in the 30- 40 m depth layer; no spatial ...

   Meeting Document : WG-Joint-94/12 : Auteur(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)

8. Trophic relations of the cephalopod Martialia hyadesi (Teuthoidea: Ommastrephidae) at the Antarctic Polar Front, Scotia Sea

   from sagital otolith size using published relationships. All fish were relatively small; 7- 35% of ... unrecognised food chain: copepod- myctophid- Martialia hyadesi- higher predator, may be an important component ...

   Meeting Document : SC-CAMLR-XI/BG/11 : Auteur(s): Delegation of United Kingdom

9. Decadal trends in the South Georgia demersal fish assemblage

   years accounting for 97% of total demersal fish biomass. The relative abundance of these species was ... not uniform between strata. Trends in SSB for the five most abundant species of the South Georgia ... rock cod (N. rossii) and Mackerel icefish (C. gunnari), an overall decrease in the abundance of the ... biomass were seen across survey years. Species counts were highly variable across the shelf region and ...

   Meeting Document : WG-FSA-13/26 : Auteur(s): M. Belchier (United Kingdom)

10. Mesozooplankton distribution and community structure in the Pacific and Atlantic sectors of the Southern Ocean during austral summer 2017/18: a pilot study conducted from Ukrainian longliners

    Ross and Scotia Seas during November 2017 – April 2018 are presented. In total, 53 zooplankton samples ... , contributing to existing long-term data bases and enhancing an international collaboration in the Southern ... Delegation responsibility for releasing documents:  Ukraine ...

    Meeting Document : WG-FSA-18/19 : Auteur(s): E.A. Pakhomov, L.K. Pshenichnov, A. Krot, V. Paramonov, I. Slypkо and P. Zabroda

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