Résultats de la recherche
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Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region
Abstract: Based on a survey of Dissostichus eleginoides in the Heard Island region in April 1999 ... originally estimated and that, in recent years, there has been an influx of a large number of young fish ... compared to the period during the first surveys in the early 1990s. A notable outcome of the 1999 survey is ... region. Careful thought will need to be given to how best to manage a stock that aggregates in this ...
Meeting Document : WG-FSA-99/68 : Auteur(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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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 : Auteur(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 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)
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FURTHER DEVELOPMENTS OF A SIMULATION MODEL, ‘PATCH’, FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
habitats. Noting the paucity of data on the ecology of these habitats, this paper further develops a ... requirement can be translated into a simple operational objective: Maintain the quality of habitats above the ... ”, a categorisation fraught with difficulty. Instead, it means that habitats for which this would not ... uncertainties to be captured in a straight-forward manner to assist CCAMLR in maintaining its precautionary ...
Meeting Document : WG-FSA-09/42 : Auteur(s): A.J. Constable (Australia)
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) - Version 2015 - Part C: Data analysis and MPA scenario development
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 ... had welcomed and endorsed as a foundation reference document for the Weddell Sea MPA planning by the ... Scientific Committee (SC-CAMLR-XXXIII, § 5.21). Chapter 2 provides a systematic overview of the newly ...
Meeting Document : WG-EMM-15/46 : Auteur(s): K. Teschke, H. Pehlke, M. Deininger, L. Douglass and T. Brey on behalf of the German Weddell Sea MPA project team
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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 : Auteur(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 : Auteur(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 : Auteur(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 : Auteur(s): S. Mormede, K. Large and S. Hanchet
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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 : Auteur(s): C. Brooks, S. Chown, L. Douglass and B. Raymond