Search results
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USING GENERALIZED DISSIMILARITY MODELLING TO ANALYSE AND PREDICT PATTERNS OF BETA DIVERSITY IN REGIONAL BIODIVERSITY ASSESSMENT
predicting spatial patterns of turnover in community composition (beta diversity) across large regions. The ... approach is an extension of matrix regression, designed specifically to accommodate two types of ... ) the variation in the rate of compositional turnover at different positions along environmental ... gradients. GDM can be further adapted to accommodate special types of biological and environmental data ...
Meeting Document : WS-VME-09/P03 : Author(s): Richardson, K., Manion, G., Ferrier, S., Elith, J.
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UPDATE ON ITEMS OF INTEREST TO WG-IMAF
Economic Zone that are relevant to the work of WG-IMAF. These developments include refinement of the ... requirement of fishing practices to reduce seabird bycatch by surface longline vessels and the introduction of ... regulations to reduce seabird bycatch by bottom longline vessels. The bycatch of seabirds by fisheries within ... (Convention seabirds) is detailed. This paper includes a tabulation of observed captures by species and ...
Meeting Document : WG-FSA-08/47 : Author(s): N. Walker (New Zealand)
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Status of krill target strength
Abstract: Empirical estimates for the target strength of krill are extracted from the literature ... . These are confined to measurements on aggregations of live euphausiids, which should avoid a frequent ... cause of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target ... strength are derived from the deformed-cylinder scattering model assuming specific sets of physical and ...
Meeting Document : WG-KRILL-92/11 : Author(s): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)
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Analysis of observer coverage for Japanese krill fishing vessels
Abstract: Sources of variability of krill mean length and fish bycatch number was investigated to ... explore proper allocation of scientific observers on Japanese krill fishing vessels using the data from ... 1995 to 2008. Based on the multistage sampling theory, we derived the equation of variance in four ... coefficients of variation (CV) caused by the shifts in coverage at different sampling stages. Vessel coverage ...
Meeting Document : WG-SAM-10/17 : Author(s): T. Okuda, M. Kiyota and H. Okamura (Japan)
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A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2013 random stratified trawl survey
vicinity of Heard Island during April 2013. This paper provides a preliminary assessment of mackerel ... icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79° 20’ E ... using standard CCAMLR methods. A large cohort of fish, estimated to be 3+, dominates the population in ... both abundance and biomass. Two scenarios for harvest are presented – a typical two year projection of ...
Meeting Document : WG-FSA-13/23 : Author(s): D.C. Welsford (Australia)
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Committee for Environmental Protection: 2015 Annual Report to the Scientific Committee of CCAMLR
Abstract: Cooperation between the Scientific Committee of CCAMLR (SC-CAMLR) and the Committee for ... Environmental Protection (CEP) has been steadily increasing over the last few years to the mutual benefit of ... between the Chairs of the CEP and SC-CAMLR, the report of the CEP meeting is presented to SC-CAMLR by the ... CEP Observer to SC-CAMLR and the report of the meeting of SC-CAMLR is presented to the CEP by the SC ...
Meeting Document : SC-CAMLR-XXXIV/BG/14 : Author(s): CEP Observer to SC-CAMLR (Dr P. Penhale, USA)
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Krill physiology and impact of temperature variations: a comparative approach
Abstract: The purpose of this "paper" is to present a research project in progress on ... the physiology of Antarctic krill, with a focus on the response to environmental temperature ... variations. This study first focused on the study of heat shock proteins (HSP) and the comparative aspect ... quickly became essential for a better understanding of the mechanisms involved in relation to the ...
Meeting Document : WG-EMM-2019/70 : Author(s): J.-Y. Toullec and C.-Y. Lee
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Review of the 2004 budget, draft 2005 budget and forecast budget for 2006
Abstract: This paper presents, for consideration by the Commission, the projected outcome of the ... budget for 2004, a draft of the 2005 budget and an indicative forecast for 2006, presented in a format ... exceeded, and possible savings of Scientific Committee-related expenditure have been identified. After ... accounting for the effect of Staff Assessment Levy, this could yield A$7 500 which, when added to the surplus ...
Meeting Document : CCAMLR-XXIII/04 : Author(s): Executive Secretary
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Results of the longline survey for toothfish in the northern Ross Sea region (SSRU 88.2A) by the FV Argos Froyanes, United Kingdom
fishable areas of SSRUs 88.2 A–B north of 66° S latitude. During the 6 th- 10 th February 2015, the UK ... fish and collect information on the characteristics of the toothfish inhabiting the region. The vessel ... of 49 tonnes of D mawsoni and small catch of 29 kg of two D eleginoides was taken; 150 tagged fish ... were released at 3.1 fish tagged per tonne and a tag overlap statistic of 85%. Author(s): M. Soeffker ...
Meeting Document : WG-SAM-15/31 : Author(s): M. Soeffker, J. Clark, J.M.G. Rebollo and C. Darby (United Kingdom)
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Modelling the circumpolar distribution of Antarctic toothfish (Dissostichus mawsoni) habitat suitability using correlative species distribution modelling methods
Abstract: Understanding and predicting the distribution of Antarctic toothfish (Dissostichus ... to CCAMLR’s management of this species. In this paper the use of Maxent models with fishery catch ... data and environmental data to provide a circumpolar prediction of Antarctic toothfish habitat ... suitability is explored. Maxent is highly sensitive to biased sampling effort and the selection of background ...
Meeting Document : WG-FSA-15/64 : Author(s): CCAMLR Secretariat