Résultats de la recherche
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Zooplankton target strength: volumetric or areal dependence?
Born Approximation Model (Chu et al., 1993), indicated that animal behavior is an important factor in ... MHz and the dependence of these data on animal volume versus cross-sectional area was explored The 420 ... system. Experiments were conducted with live, tethered individuals in an enclosure filled with filtered ... normalized by the square of the animal length) versus ka (the product of wave number and equivalent ...
Meeting Document : WG-Krill-94/13 : Auteur(s): D.A. Demer and L.V. Martin (USA)
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An automated weighing and recording system as an aid for the study of the foraging ecology of Adelie penguins (Pygoscelis adeliae)
months. Results show that from hatching (20 Dec-10 Jan) onward males and females deliver a similar mass ... mass of forty five kg was delivered to the colony for each chick raised to fledging. The average ... fledging weight was 3.1kg. The value of the System for large scale data collection in long term monitoring ...
Meeting Document : WG-CEMP-92/20 : Auteur(s): K. Kerry, J. Clarke and G. Else (Australia)
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The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia
pattern in three of the four years studied. Of the total number of the myctophid Protomyctophum choriodon ... Euphausia superba was the main prey item, occurring in 88% of all scats (n=497), whereas fish occurred in 47 ... % and squid in 5%. There was considerable intra and inter-annual variation in the characteristics of ... selecting particular sizes of krill and, therefore, that the krill in the diet reflects the krill available ...
Meeting Document : WG-EMM-95/28 : Auteur(s): Arnould, J.P.Y., Reid, K.
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Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management
recruitment in each year showed the greatest correlation with the acoustic series. The results are consistent ... from surveys conducted in the early, middle and late period of the summers of 2001 to 2005, together ... biomass. Krill abundance was highest during the middle of the summer in 3 years and in the late period in ... 2 years; in the latter there was evidence that krill recruitment was delayed by several months. A ...
Meeting Document : WG-EMM-10/P08 : Auteur(s): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein
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The breeding biology and distribution of Adelie penguins: adaptations to environmental variability
Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... of Adelie penguins in the Southern Ocean are variability in sea ice cover, ocean circulation patterns ... and terrestrial topography. We analyzed Adelie distributions in the Antarctic Peninsula region and ... concluded that Adelie penguins have discrete subpopulations in the northeastern and southwestern regions of ...
Meeting Document : WG-EMM-96/58 : Auteur(s): Fraser, W.R., Trivelpiece, W.Z.
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Do Adélie penguin fledgling weights provide an index of prey availability?
Abstract: We examine fledgling weights measured over 11 years at Béchervaise Island in relation ... as strong for the crèche foraging trips later in the season. Fledgling weights which are measured at ... crèche stages of the breeding season. In some seasons, there appeared to be constant levels of resources ... throughout the breeding season resulting in good breeding success with heavy fledglings or poor breeding ...
Meeting Document : WG-EMM-05/21 : Auteur(s): L. Emmerson, C. Southwell and J. Clarke (Australia)
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AFRICAN IUU CAPACITY BUILDING WORKSHOP AND EXPENDITURE FROM THE CDS FUND – REPORT TO CCAMLR-XXIX
of holding similar regional events in future years. Background 2. At CCAMLR-XXVII the Commission ... CCAMLR-XXIX Abstract This paper provides a report in accordance with Conservation Measure 10-05, Annex 10 ... -XXVIII in CCAMLR-XXVIII/38. Summary 1. Representatives from twelve African coastal States attended this ... capacity-building event focusing on illegal, unreported and unregulated (IUU) fishing in the CCAMLR ...
Meeting Document : CCAMLR-XXIX/09 : Auteur(s): Delegations of Australia, South Africa, the United Kingdom and the CCAMLR Secretariat
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Distribution of foraging by female Antarctic fur seals
forage mainly within 100 km of the location at which the offspring was being raised. When this constraint ... the spatial impact of breeding female fur seals on krill at South Georgia. This suggested that, in ... present in some regions where they forage intensively. However, mean consumption was about one-tenth of ... pattern was consistent among years of different prey availability. Lactating females were constrained to ...
Meeting Document : WG-EMM-03/38 : Auteur(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Further development of the fishery plans
established by the Scientific Committee and Commission. In recent years, Plans have been drafted for the krill ... fishery in Area 48 (see WG-EMM-01/7, 02/6 and 03/28) and other fisheries (see WAMI-01/5, WGFSA-02/9 and 03 ... agreed by the Commission, as well as key operational information for each fishery. In 2004, the ... of information used in the Fishery Plans. This information includes: • management measures and ...
Meeting Document : WG-FSA-SAM-04/04 : Auteur(s): Secretariat
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Proposed initiative to contribute to Ross Sea region MPA research and monitoring activities using pop-up satellite tags and otolith chemistry on Dissostichus mawsoni
survey to monitor abundance of Antarctic toothfish in the southern Ross Sea in 2018/19 (Stevens et al ... ., 2018), and a winter longline survey of Antarctic toothfish in the northern region of Subareas 88.1 and ... is to deploy a total 20 pop-off satellite tags (PSAT) on juvenile toothfish within the General ... Sea, potentially including different zones of the RSRMPA, and vertical movements in the water column ...
Meeting Document : WS-SM-18/16 : Auteur(s): C.D. Jones