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  1. Global relationships amongst black-browed albatrosses: analysis of population structure using mtDNA and microsatellites

    Abstract:  The population structure of black-browed (Thalassarche melanophris and T. impavida) and ... five island groups in the Southern Ocean. High levels of sequence divergence were found in both taxa ... (T. impavida). T. melanophris from Campbell Island contain birds from each of the three groups ... , indicating high levels of mixture and hybridization. In contrast, grey-headed albatrosses form one globally ...

    Meeting Document : WG-FSA-01/19 : Автор(ы): T.M. Burg and J.P. Croxall (United Kingdom)

  2. A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?

    ) breeding at Bird Island, South Georgia and concurrent net samples caught within the penguin foraging range ... , we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ... distributions that were statistically different from the original distribution of krill caught in nets on 76 out ...

    Meeting Document : WG-EMM-96/08 : Автор(ы): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.

  3. Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia

    Abstract:  Foremost in the elucidation of accurate population dynamics parameters in fish is a ... necessity for an errorless estimation of age. Age determination can provide basic life history information ... used annual rhythmic deposition in calcified tissues as time marks but, due ts the lack of distinct ... periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ...

    Meeting Document : SC-CAMLR-VI/BG/43 : Автор(ы): R. Radtke (USA)

  4. Updated impact assessment framework to estimate the cumulative footprint and impact on VME taxa of bottom longline fisheries in the CCAMLR Area

    assessments for all gear types combined at the scale of entire fisheries. Both WG-SAM and WG-EMM gave specific ... estimate the likely impacts of bottom longline fishing on Vulnerable Marine Ecosystems (VMEs), as required ... by Conservation Measure 22-06. The most recent iteration of the impact assessment (Sharp 2010) was ... account of the specific recommendations of WG-SAM and WG-EMM 2010 and incorporating new information ...

    Meeting Document : WG-FSA-10/31 : Автор(ы): B.R. Sharp (New Zealand)

  5. Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1

    procedure recommended at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the ... Abstract:  The current season (2014/15) is the final one of the first three-season research which ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... available, SSRU 58.4.1 C may be also one of the important spawning grounds for D. mawsoni from the degrees ...

    Meeting Document : WG-SAM-15/05 : Автор(ы): Delegation of Japan

  6. Demographic effects of extreme weather events: snow storms, breeding success, and population growth rate in a long-lived Antarctic seabird

    heavy snow storms, and long term data on petrel productivity (i.e., number of chicks pro- duced) at the ... Abstract:  Weather extremes are one important element of ongoing climate change, but their impacts ... are poorly understood because they are, by definition, rare events. If the frequency and severity of ... consequences of such events. In this study, we aimed to quantify the effects of snow storms on nest survival in ...

    Meeting Document : WG-EMM-16/P13 : Автор(ы): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T. Tveraa and S.-H. Lorentsen

  7. Report of the WG-FSA Intersessional Subgroup on Sampling Catches from Longlines

    estimated sufficiently precisely at 25% coverage to be reasonably sure of detecting increases to ... ; 2) the allocation of observer effort within longline haul and between hauls; and 3) the allocation ... of observer effort directed toward fishery target species versus ecological interactions. Both ... activity by sampling every day of hauling. Both methods essentially follow a multi-stage cluster sampling ...

    Meeting Document : WG-FSA-02/52

  8. Revised proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea

    Abstract:  At its 2010 meeting, the Scientific Committee agreed that a time series of recruitments ... survey was presented to the 2011 meeting of WG-SAM. In this paper we provide an update of the preliminary ... proposal by taking into account the comments of WG-SAM. It provides the scientific rationale and background ... for the research proposal for a longline survey of pre-recruit toothfish in the southern Ross Sea ...

    Meeting Document : WG-FSA-11/47 : Автор(ы): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)

  9. SOUTHERN OCEAN SENTINEL: REPORT OF THE FIRST INTERNATIONAL WORKSHOP IN 2009

    held at the CCAMLR Headquarters in Hobart in April 2009. The conclusions of that workshop are provided ... to WG-EMM for consideration along with an overview, the program and abstracts of the keynote ... presentations. A report of the workshop will be submitted to the Scientific Committee for its considerations in ... October 2009, including discussion on the following questions: A key conclusion of the workshop was that ...

    Meeting Document : WG-EMM-09/37 : Автор(ы): A.J. Constable

  10. A simulation study of krill fishing by an individual Japanese trawler

    statistics collected at present (centred primarily on catch per fishing time) are of low utility in detecting ... Abstract:  A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... response of the index, or a response rather smaller in relative magnitude than the biomass decline. Catch ...

    Meeting Document : SC-CAMLR-VI/BG/38 : Автор(ы): D.S. Butterworth (United Kingdom)

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