Résultats de la recherche

1. Cruise Report – Research Project: Demersal finfish distribution, abundance, and their biological characteristics in Statistical Subareas 48.1 (northern area) and 48.2

   48.2 (South Orkney Island). The sampling stations were set in approximately the same geographical ... , 2012) and on shelf areas of the South Orkney Islands according to a subsample of stations sampled by ... the R/V ' Yuzhmorgeologiya ' (Jones & Kock, 2009). The cruise took place 6-27 January ... , 2018, primarily using a Hardbottom Snapper trawl (NET Systems, Inc.), previously used by the US AMLR ...

   Meeting Document : WG-SAM-18/25 : Auteur(s): Delegation of Chile

2. Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)

   fishing vessels during the 2005/06 season in the Ross Sea CCAMLR Subarea 88.1 in order to investigate ... three trophic levels exist between icefish occupying the lowest trophic level, and Antarctic toothfish ... occupying the highest level. Some Antarctic toothfish sampled in this study occupied a similar trophic level ... according to their?15N signatures to killer whales and Weddell seals in McMurdo Sound, bluefin tuna in the ...

   Meeting Document : WG-EMM-07/19 : Auteur(s): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)

3. Variability and predictability of Antarctic krill swarm structure

   Abstract:  Swarming is a fundamental part of the life of Euphausia superba, yet we still know very ... little about what drives the considerable variability in swarm shape, size and biomass. We examined ... swarms across the Scotia Sea in January and February 2003 using a Simrad EK60 (38 kHz, 120 kHz ... ) echosounder, concurrent with net sampling. The acoustic data were analysed through applying a swarm ...

   Meeting Document : WG-EMM-10/P10 : Auteur(s): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper

4. Ross Sea Bioregionalisation, Part II: Patterns of co-occurrence of mesopredators in an intact polar ocean ecosystem

   Abstract:  We report results of analyses of niche occupation among mesopredators in the Ross Sea ... the surface of the ocean, 2) capacity to utilize differing amounts of the water column (foraging depth ... and Snow petrel. The apex predators, Leopard Seal and Killer Whale ecotype A/B, were not included ... ). Data on depth of diving and diet were taken from the literature. Three patterns of horizontal spatial ...

   Meeting Document : WG-EMM-10/12 : Auteur(s): G. Ballard, D. Jongsomjit and D.G. Ainley (USA)

5. Uncertainty in acoustic surveys of Antarctic krill

   acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... bias was investigated by comparing the theoretical and actual target strength (TS) values of four ... different standard spheres with the results of a calibration by self-reciprocity (Demer and Hewitt ... , submitted). Combining the results of these experiments, the accuracy and precision of a system calibration ...

   Meeting Document : WG-EMM-95/72 : Auteur(s): Demer, D.A.

6. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   limit on krill (Euphausia superba) in Statistical Area 48. The measure also asks the Scientific ... Committee to provide the Commission with advice on how precautionary limits could be applied to subareas or ... evaluated relative to six criteria: 1) the degree to which information on biological relationships is ... considered, 2) the cost of data collection, 3) the reliability of required information, 4) the ease of ...

   Meeting Document : WG-KRILL-92/16 : Auteur(s): G. Watters and R.P. Hewitt (USA)

7. Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1

   Abstract:  This is a companion paper to Kinzey et al. (2014), who extended the integrated stock ... were pooled at annual, seasonal, and monthly time scales.  The data were from research cruises ... conducted by Germany (RMT8 net samples from 1981 to 1989), the U.S. AMLR Program (IKMT net samples from 1992 ... from three of the models provide a robust picture of changes in the krill population.  An annual model ...

   Meeting Document : WG-EMM-14/35 : Auteur(s): G.M. Watters, C.S. Reiss and D. Kinzey (USA)

8. A krill–predator–fishery model for evaluating candidate management procedures

   Abstract:  The CCAMLR has recognised the need to subdivide the precautionary krill catch limit for ... Statistical Area 48 amongst smaller spatial units in order to minimize the localized depletion of krill in ... been defined, and six candidate procedures for subdividing the catch have been identified. It is now ... well as fishery performance. This evaluation must be conducted in the context of considerable ...

   Meeting Document : WG-EMM-05/13 : Auteur(s): G.M. Watters, J.T. Hinke (USA), K. Reid and S. Hill (United Kingdom)

9. 30 years of krill fisheries management – challenges remain

   frequently. The reproduction and survival of krill are significantly affected by sea ice cover. This is of ... concern since key spawning, recruitment and nursery areas of krill are located in the Southwest Atlantic ... sector, an area that has been warming rapidly, resulting in a reduction in the extent and duration of ... winter sea ice. CCAMLR needs to maintain a precautionary approach to krill fisheries management. The ...

   Meeting Document : CCAMLR-XXX/BG/19 : Auteur(s): Submitted by ASOC

10. ENVIRONMENTAL FORCING AND SOUTHERN OCEAN MARINE PREDATOR POPULATIONS: EFFECTS OF CLIMATE CHANGE AND VARIABILITY

    Abstract:  The Southern Ocean is a major component within the global ocean and climate system and ... potentially the location where the most rapid climate change is most likely to happen, particularly in the ... include changes to the long interdecadal background signals such as the development of the El Niño ... opportunity to explore how biological communities respond to change. This approach is based on the premise ...

    Meeting Document : WG-EMM-08/P06 : Auteur(s): P.N. Trathan, J. Forcada and E.J. Murphy

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