Search results
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Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001
around Elephant Island during 27 January to 4 February 2001. Results show a spatial separation of the ... juvenile and the spawning stock. The station grid was extended to the south, where a large proportion of ... high krill abundance and the high recruitment index reflect the end of a succession of years with poor ... for a successful spawning season, was G = 0.99, indicating an early initiation of the spawning season ...
Meeting Document : WG-EMM-01/10 : Author(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)
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Proposal to strengthen monitoring and control of transhipments
), nor is it clear whether transhipment constitutes fishing for the purposes of Conservation Measure 10 ... -02. The delegation of the United States proposes to amend CCAMLR Conservation Measures 10-02 and 10 ... Area, or of marine living resources harvested within the Convention Area, must be licensed and notified ... Vessel Record containing the vessels of NCPs that would be authorized to tranship with Contracting Party ...
Meeting Document : CCAMLR-XXXIV/27 : Author(s): Delegation of the USA
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DETECTION OF VULNERABLE MARINE ECOSYSTEMS IN THE SOUTHERN SCOTIA ARC (CCAMLR SUBAREAS 48.1 AND 48.2) THROUGH RESEARCH BOTTOM TRAWL SAMPLING AND UNDERWATER IMAGERY
Abstract: High densities of vulnerable marine ecosystem (VME) indicator taxa were encountered in ... were detected in most cases utilizing occurrence and abundance of VME indicator taxa in research bottom ... trawl samples, as well as by way of in situ observations with an underwater photographic/video imaging ... system. Using standardized densities of VME taxa from bottom trawl samples, we propose one possible ...
Meeting Document : WG-EMM-09/32 : Author(s): S.J. Lockhart and C.D. Jones (USA)
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Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula
models of standing krill biomass and the design of a sustainable krill fishery for the Scotia Sea ... . Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ... of pygoscelid penguins breeding in this region. We find that a high quality survey of Zavodovski ...
Meeting Document : WG-EMM-12/P02 : Author(s): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan
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Results of the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the 2013/14 season
year of the multi-year research survey in Divisions 58.4.1 and 58.4.2, the F/V Tronio has returned to ... 58.4.1D and 58.4.1C SSRUs. A prospective estimation of the local biomass (B LOC) of one localized area ... , together with the estimation of the total Biomass in the entire SSRU using a depletion model. There have ... abundance by tag-recapture models. The IEO is starting the process of reading otoliths with ageing purposes ...
Meeting Document : WG-SAM-14/12 Rev. 1 : Author(s): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain)
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Stomach contents of sub-adult Antarctic toothfish (Dissostichus mawsoni) from the western Ross Sea, Antarctica
Abstract: The stomach contents of 190 sub-adult (51-100 cm TL) Antarctic toothfish (Dissostichus ... primarily piscivorous, feeding on a wide variety of small to medium sized fish. Icefish (Channichthyidae ... (Muraenolepididae) were also important. Glacial squid (Psychroteuthis glacialis) were found in about 20% of stomachs ... of the Ross Sea. Although the study provides an important comparison of diet of adult and sub-adult ...
Meeting Document : WG-FSA-06/27 : Author(s): D.W. Stevens (New Zealand)
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Report of the South Georgia groundfish survey (Subarea 48.3) in January 2006
the FPRV Dorada. Sixty-three random trawls were undertaken, with 12.3 tonnes of mackerel icesfish ... caught, which produced biomass estimates of between 91000 and 117000 tonnes. The catches were dominated ... by fish of 20-25 cm (putative 2+), but unusually large numbers of fish of ~ 50 cm were also caught to ... the N and NE of South Georgia. Fish in spawning condition (Stage IV) were found at the eastern end of ...
Meeting Document : WG-FSA-06/51 : Author(s): M.A. Collins, C. Jones, J. Clark. S. Fielding, J. Slakowski, T. North, W. Reid and J. Watts (United Kingdom)
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THE ISSUE OF NON-COMPLIANCE WITH CCAMLR TAGGING PROGRAM
Exploratory Fisheries), the flag States of fishing vessels participating in exploratory fisheries are ... responsible for ensuring the tagging of Dissostichus spp., tag recovery and correct reporting. At CCAMLR XXVI ... assessment of compliance with the CCAMLR tagging program based on information contained in the Fish Stock ... Assessment Report 2007 and discovered a high level of non-compliance. The lack of reliable information can ...
Meeting Document : CCAMLR-XXVII/BG/22 : Author(s): Delegation of Australia
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A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION
Abstract: This report reviews the availability of data describing penguin abundance in the CCAMLR ... Convention area, and the uncertainties in deriving overall abundance estimates from these counts. Counts of ... breeding colonies are available from a variety of sources and, when combined, coverage is thought to be ... been collected using various demographic units, and the timing of these have varied relative to ...
Meeting Document : CCAMLR-IWC-WS-08/08 : Author(s): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.
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On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model
growth rates, thus solving problems of lack of self-sustainability encountered in earlier model analyses ... split of the overall density dependence effect between the first year and following sub-adult years of ... life. Since evaluations of the level of resilience of a predator to krill fishing depend on the values ... annual population growth rate of 10%. Author(s): Butterworth, D.S., Thomson, R.B. Title: On the ...
Meeting Document : WG-EMM-95/39 : Author(s): Butterworth, D.S., Thomson, R.B.