Search results
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Distribution of phytoplankton in the mixed layer: implication of krill abundance
Abstract: The vertical trajectory of phytoplankton in the Antarctic ocean is modelled as a random ... mixing layer is shallow, but diffusion is large enough to effect the vertical distribution of ... phytoplankton in the upper ocean. Author(s): United States of America Title: Distribution of phytoplankton in ... the mixed layer: implication of krill abundance Approval: Approved ...
Meeting Document : SC-CAMLR-VII/BG/26 : Author(s): United States of America
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An outline of narrowband echosounder survey methods to estimate biomass of Antarctic krill in CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Abstract: Japanese multidisciplinary survey with a focus on biomass estimation of Antarctic krill ... CCAMLR standard will be employed in the analysis but utility of 70 kHz data will also be investigated ... . Measurements of acoustic impedances (mass density and sound-speed contrasts) of krill will also be conducted ... during the survey. Currently, the compatibility of the output data between EK60 and EK80 has been ...
Meeting Document : SG-ASAM-18/02 : Author(s): K. Abe, K. Amakasu, R. Matsukura, T. Mukai and H. Murase
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Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6)
of input data from the more recent years (up to 2015/16 season) and a reassessment of stocks taking ... into account the previous remarks of the WG-FSA meetings. Author(s): R. Sinegre and G. Duhamel Title ... : Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands ...
Meeting Document : WG-FSA-16/52 : Author(s): R. Sinegre and G. Duhamel
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Report of activities performed under support of CCAMLR Scientific Scholarship in 2019
Abstract: A list of events attended by the Scholarship holder for 2019 with the support of the ... CCAMLR Scientific Scholarship is presented. The types of work that have been completed and the knowledge ... Title: Report of activities performed under support of CCAMLR Scientific Scholarship in 2019 Approval ...
Meeting Document : SC-CAMLR-38/BG/23 : Author(s): I. Slypko
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Can the chemistry of otolith nuclei determine population structure of Patagonian toothfish Dissostichus eleginoides?
Abstract: Otolith nucleus chemistry resolved the population structure of Patagonian toothfish ... to South Georgia in the Southern Ocean. Concentrations of 55Mn, 88Sr, and 137Ba, ratioed to 42Ca ... , showed a sharp population boundary in the vicinity of the Polar Front, between South Georgia and the ... population heterogeneity not previously detected, suggesting the possibility of more than one South American ...
Meeting Document : WG-FSA-06/P2 : Author(s): Ashford, J.R., A.I. Arkhipkin and C.M. Jones
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Growth and maturation of Euphausia superba Dana in northern areas of its distribution range (with reference to South Georgia and Bouvet Island areas)
maturation rates as well as the average minimal sizes of E.superba are appreciably higher in the former than ... South Georgia area as compared to Bouvet Island. The differences in the growth and maturation rates of ... E.superba between these two areas persist with a change of climatic epochs. During the warmer climatic epoch ... observed during the warmer and one peak during the colder epoch. Author(s): Delegation of USSR Title ...
Meeting Document : SC-CAMLR-VIII/BG/22 : Author(s): Delegation of USSR
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Age and Length Growth of Champsocephalus gunnari, Lonnberg 1905 (Pisces, Chaenichthyidae, in the Area of Elephant Island, West Zone, Antarctica
Abstract: In order to extend the knowledge on the age and growth of antarctic fishes, the authors ... present herein the results of the data processing arising from samplings o f a species belonging to the ... Chaenichthyidae family, Champsocephalus gunnari. The age determination of this species, was made using the otolith ... fine cutting technique. Through the reading of the growth rings the age classes corresponding to3, 4, 5 ...
Meeting Document : WG-FSA-85/11 : Author(s): A.P. Tomo and E. Barrera-Oro (Argentina)
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Exploring age and growth dynamics of a historically overfished Sub-Antarctic fish species: The grey rockcod (Lepidonotothen squamifrons) in the vicinity of Heard Island and McDonald Island
been performed to assess the status of this species within the Heard Island and McDonald Island region ... (CCAMLR Division 58.5.2). This study has updated a range of biological parameters such as growth, maturity ... 24. Through the mapping of abundances the presence of three distinct geographical populations were ... : Exploring age and growth dynamics of a historically overfished Sub-Antarctic fish species: The grey rockcod ...
Meeting Document : WG-FSA-15/51 : Author(s): D. Maschette, D.C. Welsford and C. Gardner (Australia)
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Outline details of the proposed aerial photographic survey at South Georgia for estimating breeding population sizes of land-based predators
Abstract: This paper describes current research plans to estimate the size of land-based marine ... the abundance of these populations. The research will focus upon predator species that depend upon ... concentrate upon those species where there is a high probability of interaction with fisheries and significant ... develop new methods that reliably estimate predator population sizes whilst minimising the level of ...
Meeting Document : WG-EMM-01/24 : Author(s): P. Trathan and D. Briggs (United Kingdom)
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Feasibility of trawl surveys to estimate abundance of juvenile toothfish in Subarea 88.1
Abstract: This report presents results from a desktop study to determine the feasibility of ... average over the last three years, 63% of the seabed area from 0–600 m depth was not fishable in January ... –February because of ice. Ice cover varied greatly between years, with the untrawlable area ranging from 31 ... % in 2002 to 89% in 2002. Less than 10% of the potential trawl survey area was fishable in all three ...
Meeting Document : WG-FSA-SAM-04/07 : Author(s): Wood, B.A., ODriscoll, R.L., Hanchet, S.M.