Résultats de la recherche
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
1990/91 a survey was conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and ... concentration of krill and to estimate krill biomass in the area surveyed. Krill biomass estimation was done by ... observed. Main krill concentrations were observed in shelf waters north of the islands as usual. Tracking ... of buoys demonstrated the existence of convergent complex eddies in shelf waters of these islands. A ... conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and Elephant Island. The main ... estimate lain biomass in the area surveyed. Krin biomass estimation was done by means of hydroacoustics ... lain concentrations were observed in shelf waters north of the islands as usual. Tracking of buoys ... demonstrated the existence of convergent complex eddies in shelf waters of these islands. A high concentration ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu
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Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996
Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 from March to May 1996. Details of the cruise ... -130 cm whith the proportion of females in the catch exceeding those of males in fish larger than 1 10 ... petrels were the most abundant species in the vicinity of the vessel when longlines were set. About 44 ... the vicinity of the vessel. Orcas in some cases caused a considerable loss of fishes from the lines ...
Meeting Document : WG-FSA-96/22 : Auteur(s): Selling, J., Kock, K.-H.
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BIOLOGICAL PROSPECTING IN THE SOUTHERN OCEAN, A ROLE FOR CCAMLR
established to examine the issue of Biological Prospecting in the Antarctic Treaty Area. Although increasingly ... this activity on resource management. Much of the debate to date in relation to marine genetic ... resources beyond national jurisdiction has centred on evidence of emerging commercial interest in the ... genetic resources of the deep sea. The private sector involvement in research related to marine resources ...
Meeting Document : CCAMLR-XXVII/BG/36 : Auteur(s): Submitted by IUCN
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Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
important aspect of the variation is fluctuation in the abundance of krill, the major prey item of many of ... the higher predators. Direct impacts of variability in the large-scale physical environment, such as ... dynamics in the observed variation. Here, analyses of a model of krill population development and predator ... diet data from South Georgia were used to examine seasonal changes in the population structure of krill ...
Meeting Document : WG-EMM-01/53 : Auteur(s): E. Murphy and K. Reid (United Kingdom)
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Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2
Abstract: In this paper, we address a number of aspects of the model inputs and parameters of the ... runs that investigate the sensitivity of the 2006 stock assessment to changes in these model inputs and ... consistent patterns in length frequencies over the duration of the fishery. Including terms for nation ... recaptured. Inclusion of observations of the 2006 fish recaptured in 2007 had the greatest impact on the ...
Meeting Document : WG-SAM-07/6 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
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CALIBRATION ERROR IN THE AMLR PLANKTON TIME SERIES
Isaac-Kidd Midwater Trawl (IKMT) from 1992 to 2007 showed a marked decline (~35%) in the volume of water ... of rotor counts from the flow meters showed no significant trends. The discrepancy in volume is ... traced to a simple arithmetic error in the calculation of the mouth area of the net. Since 2000, the net ... area was not calculated and instead only the length of the net was used in the determination of the ...
Meeting Document : WG-EMM-08/19 : Auteur(s): C. Reiss (USA)
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Preliminary investigations into a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
Abstract: In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... noted that the assessments were unable to fit the patterns in the recaptures of tagged fish seen in SSRU ... modelling of the populations in the southern ASR (88.2C-G) and the northern ASR (88.2H), as well as ... enabling a better account of the observed patterns in the tag recapture data. However, in this preliminary ...
Meeting Document : WG-FSA-14/57 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Squalus acanthias – a new species in the Antarctic ichthyofauna (Division 58.5.1)
Abstract: Four species of shark have been known to date to occur in the sub-Antarctic waters ... was captured in February 1995 on the shelf of the Kerguelen Islands from the depth of about 195 m and ... duly described. Squalus acanthias is believed to be one of the most widespread shark species in the ... World Ocean. The fact of capturing this species in the Kerguelen waters enlarges by far its range and ...
Meeting Document : WG-FSA-96/14 : Auteur(s): Pshenichnov, L.K.
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Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
-larvae of P. antarcticum with a total length from 13 to 70 mm, were conducted in the southeast of the ... relationships. In the authors’ opinion the model could be used to give a first indication of the absolute ... abundance of P. antarcticum in the Ross Sea. A critical point is the decision rule to be used to ... of the Ross Sea. Following the three-frequency decision criterion described in Azzali et al. (2004 ... of the catch accounts for the largest proportion of variation in mean in situ TS estimation. Other ... difference in sound speed should not affect the measurements of the mean volume backscattering coefficient ... 1.7% (spheroid) to 2.6% (ellipsoid) (in good agreement with the mean characteristics of fish soft ... were used, giving |Rv| = 0.22, which is in reasonable agreement with the mean characteris- tics of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Auteur(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
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Preliminary proposal for designation an Antarctic Specially Protected Area in the Argentine Islands Archipelago and nearby Graham Coast Antarctic Peninsula region
vegetation, and populations of very rare in the region Colobanthus quitensis (Caryophyllaceae), and more ... component could serve as one of the scientific reference areas of the broad-scale MPA in Domain 1 (Antarctic ... distribution (in accordance with the point 2 (iii) of the CM 91-04). Author(s): Delegation of Ukraine Title ... region of Argentine Islands Archipelago, adjacent islands of the Wilhelm Archipelago and costal oases of ...
Meeting Document : SC-CAMLR-38/BG/21 Rev. 1 : Auteur(s): Delegation of Ukraine