Résultats de la recherche

1. NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL

   Abstract:  We validate the acoustic target classification protocols developed for the Stochastic Distorted-Wave Born Approximation (SDWBA) model using three frequency acoustic data and concurrent net hauls that were collected during two cruises to the South Georgia region in 1996. For each krill

   Meeting Document : WG-EMM-08/54 : Auteur(s): J. Watkins and S. Fielding (United Kingdom)

2. PROPERTIES OF KRILL DISTRIBUTION IN PELAGIC AND COASTAL SSMUs OF THE SOUTH ORKNEY ISLANDS SUBAREA ACCORDING TO THE DATA OF SCIENTIFIC OBSERVATIONS AND FISHERY

   Abstract:  In this paper the krill spatial distribution in the in coastal and pelagic SSMUs of the Subarea 48.2 depending on oceanological factors is considered. Estimates of krill biomass and aggregation characteristics, and krill transport factors according to different modifications of Antarctic

   Meeting Document : WG-EMM-08/55 : Auteur(s): S.M. Kasatkina and V.N. Shnar (Russia)

3. Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru

   Abstract:  In order to calculate the target strength of Antarctic krill (Euphausia superba) using an acoustical scattering model, information on size, morphology, orientation, sound–speed and mass-density contrasts between the animal and the surrounding water are required. Sound-speed and mass

   Meeting Document : WG-EMM-08/56 Rev. 1 : Auteur(s): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)

4. RAPID WARMING OF THE OCEAN AROUND SOUTH GEORGIA,SOUTHERN OCEAN, DURING THE 20TH CENTURY: FORCINGS, CHARACTERISTICS AND IMPLICATIONS FOR LOWER TROPHIC LEVELS

   Abstract:  The Southern Ocean is known to have warmed considerably during the second half of the 20th century but there are few locations with data before the 1950s. In addition, assessments of change in this region are hampered by the strong seasonal bias in sampling, with the vast majority of

   Meeting Document : WG-EMM-08/P03 : Auteur(s): M.J. Whitehouse, M.P. Meredith, P. Rothery, A. Atkinson, P. Ward and R.E. Korb

5. Oceanic circumpolar habitats of Antarctic krill

   Author(s):  A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming Title:  Oceanic circumpolar habitats of Antarctic krill Approval:  Approved Secretariat Workflow Status:  Content Approved Document

   Meeting Document : WG-EMM-08/P04 - Article : Auteur(s): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming

6. OCEANIC CIRCUMPOLAR HABITATS OF ANTARCTIC KRILL

   Abstract:  Surveys of Euphausia superba often target localised shelves and ice edges where their growth rates and predation losses are atypically high. Emphasis on these areas has led to the current view that krill require high food concentrations, with a distribution often linked to shelves. For a

   Meeting Document : WG-EMM-08/P04 - Abstract : Auteur(s): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming

7. LIFE HISTORY BUFFERING IN ANTARCTIC MAMMALS AND BIRDS AGAINST CHANGING PATTERNS OF CLIMATE AND ENVIRONMENTAL VARIATION

   Abstract:  The consequences of warming for Antarctic long-lived organisms depend on their ability to survive changing patterns of climate and environmental variation. Among birds and mammals of different Antarctic regions, including emperor penguins, snow petrels, southern fulmars, Antarctic fur

   Meeting Document : WG-EMM-08/P05 : Auteur(s): J. Forcada, P.N. Trathan and E.J. Murphy

8. 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 high-latitude polar regions. In these regions, even small temperature changes can potentially

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

9. ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN

   Abstract:  A major mid-1980s shift in ecological structure of significant portions of the Southern Ocean was partially due to the serial depletion of fish by intensive industrial fishing, rather than solely to climate factors as previously hypothesised. Over a brief period (1969-1973), several

   Meeting Document : WG-EMM-08/P07 : Auteur(s): D. Ainley and L. Blight

10. Histopathology of Antarctic krill, Euphausia superba, bearing black spots

    Abstract:  Small black spots have been noticed on the cephalothorax of Antarctic krill, Euphausia superba, since January, 2001. To study the nature of the black spots, the krill were sampled in the winter of 2003, 2006, and 2007 in the South Georgia region, the Antarctic Ocean. Histological

    Meeting Document : WG-EMM-08/P09 : Auteur(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu

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