Résultats de la recherche
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Predicting distribution and relative abundance of mid-trophic level organisms using oceanographic parameters and acoustic backscatter
Abstract: Data on the distribution and abundance of mid-trophic level organisms (MTLOs) in the ... resilience to climate change. We used acoustic data collected at 38 kHz frequency across the Southern Ocean ... proxy for MTLO abundance in the epi- and mesopelagic zones. Boosted regression trees and generalised ... additive mixed models were used to develop simple predictive models for backscatter in the epi- and ...
Meeting Document : WG-EMM-18/P07 : Auteur(s): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery
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Déplacement proposé de la limite entre les sous-zones 88.1 et 88.2
Abstract: This paper proposes an administrative realignment of the boundary between Statistical ... Subarea 88.1 and Statistical Subarea 88.2 in order to harmonise with the exploratory fisheries for ... Dissostichus mawsoni in those subareas and with other conservation measures in force. The proposal would move ... the boundary of Subareas 88.1 and 88.2 from 170°W to 150°W with small-scale research units (SSRUs ...
Meeting Document : CCAMLR-XXXVII/22 : Auteur(s): CCAMLR Secretariat
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Chemical marking protocols for Antarctic starry skate age validation
Abstract: A field study is planned to validate the thorn ageing method for Antarctic starry skate ... (Amblyraja georgiana). This study is a fast, simple ‘add-on’ that will complement the aims of the skate ... tagging programme. The antibiotic terramycin (oxytetracycline hydrochloride, OTC) will be injected into ... skates brought into the boat for tagging during the 2019-20 skate tagging programme in the Ross Sea ...
Meeting Document : WG-SAM-2019/10 : Auteur(s): M. Francis and S. Parker
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WG-IMAF-11
monitoring marine debris in the CAMLR Convention Area Secretariat WG-IMAF-11/05 Rev. 2 Summary of scientific ... observations in the CAMLR Convention Area for 2010/11 Secretariat WG-IMAF-11/06 Summary of scientific ... -11/07 Proposal to allow daytime setting of longlines between 15 and 30 April in the Patagonian ... during the middle of winter during the fishing season in Subarea 48.3 J. Brown (United Kingdom) WG-IMAF ...
Meeting
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WG-KRILL-92
-92/04 Further computations of the consequences of setting the annual krill catch limit to a fixed ... fraction of the estimate of krill biomass from a survey D.S. Butterworth, G.R. Gluckman and S. Chalis ... (South Africa) WG-KRILL-92/05 State of the Antarctic krill (Euphausia superba Dana) resources in the ... (Russia) WG-KRILL-92/06 Report of biological observations carried out on board the krill fishing vessel ...
Meeting
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ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA
hierarchical Bayesian model. The model was composed of multistage cluster units (i.e., years, subarea, vessels ... , and haul) based on a state-space model, which can separate biological process error in the population ... dynamics from observation error caused by the fishery activity and individual observation. In both krill ... length and bycatch fish number, the parameters estimated by MCMC showed the variation among years ...
Meeting Document : WG-EMM-11/39 : Auteur(s): T. Okuda and M. Kiyota (Japan)
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DEVELOPMENT OF A METHODOLOGY FOR DATA QUALITY ASSESSMENT
Abstract: Measures are developed which aim to summarise the quality of fishing event, catch, and ... biological sampling data from a fishing trip. In particular these measures aim to quantify the prevalence of ... position or time reporting errors, the diversity of catch, the extent to which catch data follow Benford ... 's Law for the distribution of the first significant digit, whether length-frequency data have been ...
Meeting Document : WG-SAM-08/13 : Auteur(s): D.A.J. Middleton and A. Dunn (New Zealand)
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Assessing status and change in Southern Ocean ecosystems
Abstract: A great challenge for Southern Ocean ecosystem science is to assess the status and ... function can be unambiguously assessed in the future. This challenge includes being able to assess the ... likelihood of different states in the future. These requirements are needed by different bodies regionally ... and globally for making tactical decisions, such as catch limits and conservation requirements in the ...
Meeting Document : WG-EMM-13/36 : Auteur(s): A. Constable (Australia), D. Costa (USA), E. Murphy (United Kingdom), E. Hofmann, O. Schofield (USA), A. Press (Australia), N. Johnston (United Kingdom) and L. Newman (Australia)
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Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys
Abstract: The current CCAMLR protocol specifies daytime acoustic sampling in order to avoid ... issues of krill migrating too close to the surface to be acoustically detected, as well as potential ... data were collected both during day and night for the 2019 Scotia Sea large-scale krill monitoring ... survey. Data from upward-looking, stationary platforms offer unique opportunities for assessing the ...
Meeting Document : WG-EMM-2019/32 : Auteur(s): T. Klevjer, G. Skaret and B.A. Krafft
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WG-EMM-01
documents Doc Number Title WG-EMM-01/1 Provisional Agenda and Provisional Annotated Agenda for the 2001 ... Meeting of the Working Group on Ecosystem Monitoring and Management (WG-EMM) WG-EMM-01/10 Demography of ... Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001 V. Siegel ... (Australia) WG-EMM-01/13 Distribution and size of Antarctic krill (Euphausia superba Dana) in the Polish ...
Meeting