Search results
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On influence of acoustic survey methodology improvement on krill biomass estimation. (A comparison of results of acoustic surveys based on single-frequency and double-frequency algorithms)
species identification realized by single-frequency and double-frequency algorithms could cause a marked ... difference in krill biomass estimates. A difference was more than 1.8 times in the case under consideration ... . Judging from significant differences in biomass estimates attributed to only introducing a new method of ... have a considerable influence on biomass estimates obtained. Therefore. it is expected that the ...
Meeting Document : WG-EMM-01/41 : Author(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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FIELD IDENTIFICATION GUIDE TO HEARD ISLAND AND MCDONALD ISLANDS (HIMI) BENTHIC INVERTEBRATES: A GUIDE FOR SCIENTIFIC OBSERVERS ABOARD FISHING VESSELS
Abstract: At CCAMLR-XXVI the Working Group on Fish Stock Assessment (WG-FSA) noted a lack of ... to Heard Island and McDonald Islands (HIMI) benthic invertebrates: a guide for scientific observers ... intended for use as both a training tool, and at-sea by trained observers, to make accurate identifications ... similar guides for training purposes and at-sea use by observers in other CCAMLR designated fisheries, a ...
Meeting Document : SC-CAMLR-XXVIII/BG/12 : Author(s): Delegation of Australia
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ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT
. eleginoides tag returns in 2008/09, bringing the total from all seasons up to 54 tag recaptures; 4. A total of ... a limited number of cohorts. 7. CASAL confirms that the vulnerable biomass is dominated by a single ... simple Petersen and local CPUE estimates, with a B0 of 1143 t and B2009/B0 of 85%. 9. The sustainable ... DATA FROM A FOUR-YEAR TAGGING EXPERIMENT Approval: Approved ...
Meeting Document : WG-FSA-09/17 : Author(s): J. Roberts and D.J. Agnew (United Kingdom)
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The reliability of VHF telemetry data for measuring attendance patterns of marine predators: a comparison with Time Depth Recorder data
patterns of otariid seals. These data have been used in a wide variety of ways, from characterizing the ... data in a state-space framework elicited mean attendance durations that were indistinguishable from TDR ... -derived measurements, suggesting this approach may provide a means to re-examine historic VHF data ... decreasing cost over the last thirty years, TDRs are a more appropriate means to collect attendance data on ...
Meeting Document : WG-EMM-15/P05 : Author(s): A.D. Lowther, H. Ahonen, G. Hofmeyr, W.C. Oosthuizen, P.J. Nico De Bruyn, C. Lydersen and K. Kovacs
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) - Version 2015 - Part B: Description of available spatial data
EMM) the background document that provides the scientific basis for the evaluation of a marine ... provide the background information on the Weddell Sea MPA (WSMPA) planning area (Part A); to inform on the ... evaluation of MPAs in the Weddell Sea planning area. Chapter 2 provides a systematic overview of the current ... document SC-CAMLR-XXXIII/BG/02, which the Scientific Committee had welcomed and endorsed as a foundation ...
Meeting Document : WG-EMM-15/39 : Author(s): K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA (WSMPA) project team, with contributions from the participants at the International Expert Workshop on the WSMPA project (7-9 April 2014, Bremerhaven)
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Demographic effects of extreme weather events: snow storms, breeding success, and population growth rate in a long-lived Antarctic seabird
population growth rate. We used detailed data on daily individual nest survival in a year with frequent and ... storms are a key driver of Antarctic petrel breeding success, and potentially population dynamics. We ... during a snow storm than chicks in good condition. This stresses the importance of con- sidering ... population responses to climate change. Author(s): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T ...
Meeting Document : WG-EMM-16/P13 : Author(s): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T. Tveraa and S.-H. Lorentsen
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Progress towards an assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 882C–H for the years 2002–03 to 2015–16 using a two-area model
Abstract: This paper presents further progress towards a two-area stock assessment model for ... (SSRUs 88.2C–G) comprising a mix of large mature fish and small immature fish. Two-area stock assessment ... an update on these two-area stock models, which include two years of new data collected under a ... current research plan be extended for a further 2-year period so that additional mark-recapture data can ...
Meeting Document : WG-FSA-16/44 : Author(s): S. Mormede, K. Large and S. Hanchet
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Domain 1 Marine Protected Area Preliminary Proposal PART A-1: Priority Areas for Conservation
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... display of a large amount of information, not only contributing to the best science available but also ... providing a platform for the sharing and visualization of information, highlighting the multinational ... identification of PAC constitutes the initial step towards the development of a Domain 1 MPA that considers both ...
Meeting Document : SC-CAMLR-XXXVI/17 : Author(s): Delegations of Argentina and Chile
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Progress towards a representative network of Southern Ocean protected areas
Abstract: Global threats to ocean biodiversity have generated a worldwide movement to take ... pelagic bioregionalizations as a proxy for biodiversity. Currently about 9.9% of the Southern Ocean is ... protected in MPAs, with 3.9% being encompassed by no-take areas. While this is a relatively large proportion ... basins, and at a finer scale, than is reflected in the bioregions. Further analysis is needed, across ...
Meeting Document : WS-SM-18/12 Rev. 1 : Author(s): C. Brooks, S. Chown, L. Douglass and B. Raymond
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Features of spatial and temporally distribution patterns of krill flux in the Scotia Sea: some comments on the development of a krill fishery management in Area 48.
to the Scotia Sea, were a subject of study. It is clearly illustrated that the geostrophic krill ... in Area 48. The special attention was provided to a spatial variability of direction and intensity ... krill resource management schemes require a study of the variability nature of its distribution under ... resources. Author(s): S. Kasatkina, V. Shnar and A. Malyshko Title: Features of spatial and temporally ...
Meeting Document : WG-EMM-18/21 : Author(s): S. Kasatkina, V. Shnar and A. Malyshko