Search results
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CEMP INDICES: 2011 UPDATE
indicator species collected by standard methods in the three Integrated Study Regions of the Convention Area ... . Each year the Secretariat updates the standardised index values and provides a summary of trends and ... total of 116 anomalous values (anomalies, see Appendix 1) have been observed in the times series of ... in Subarea 48.1. These are: 2009/10: Low number of chicks fledged per egg laid (A6a) for Adelie ...
Meeting Document : WG-EMM-11/06 : Author(s): Secretariat
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Sampling toothfish from longlines with unequal probabilities
Abstract: To obtain a representative sample of the catch taken by toothfish longliners, CCAMLR ... observers are recommended to sample a quota of the first 30 fish that are caught during a sampling session ... unequal probabilities which, if unaccounted for, can lead to serious biases in estimates of population ... vital rates. To resolve this, either the probabilities need to be incorporated in the analysis of ...
Meeting Document : WG-FSA-03/85 : Author(s): J.R. Ashford (USA)
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Proposal for GEF (Global Environment Facility) funding to support capacity building and training to the GEF-eligible countries with Antarctic interests
: Measuring potential physical and ecological degradation and destabilisation from the effects of climate ... alien invasive species as a result of human visits (vessels, scientists etc) as well as with changing ... ecosystem conditions resulting from climate change; Gaining a better understanding of fishing effort and ... identification of overfishing of target species and associated or species dependent on the same ecosystem taken ...
Meeting Document : WG-EMM-10/32 : Author(s): South Africa
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Part 1. Seabird assemblages during trawling operations
Abstract: Our knowledge of seabird assemblage composition and abundance at-sea is limited by the ... availability of vessel platforms. Fishing vessels is an alternative to dedicated research vessels. Besides, it ... were a total of 13 species recorded, with only two species only found at Elephant or South Orkney ... Islands. Mean species richness per set during fishing operations was 4-5, with a mean abundance of 139 ...
Meeting Document : WG-FSA-16/20 : Author(s): J.A. Arata
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A multivariate approach to examining patterns in research fishing activities using the SSRU 88.2A–B North survey as an example
Abstract: The WG-SAM in 2016 “agreed the importance of identifying a set of diagnostics and clear ... activities”, further noting that a characterisation of fishing activities was also required in order to ... achieve such a goal (WG-SAM 2016, paragraph 4.19). In this paper, we further develop the analysis of Large ... times to haul lines once standardised for other factors, but that the activities carried out as part of ...
Meeting Document : WG-FSA-16/46 : Author(s): S. Mormede, A. Dunn, S.J. Parker, T. Earl, C. Darby, M. Söffker and O.R. Godø
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Second performance review – progress report
CCAMLR website with the understanding that the PR2 Report was received as the work of the Panel and was ... the Scientific Committee and its working groups annually review the status of each relevant ... , that records the discussion and action considered in respect of each recommendation at each annual ... meeting of the Commission and Scientific Committee. The Secretariat has prepared item (i) 1 which is ...
Meeting Document : CCAMLR-XXXVII/11 : Author(s): CCAMLR Secretariat
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Research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16
Abstract: Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... sizes were vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. During the 2004-2014 ... more recapture. The food-web of Dissostichus spp. has started to be studied in the southern Ross Sea ... and 58.4.1C. Some studies on biology of the fish have been evaluated, but those are not enough to ...
Meeting Document : WG-SAM-15/07 : Author(s): Delegation of the Republic of Korea
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2015/16
Abstract: Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... sizes were vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. During the 2004-2014 ... more recapture. The food-web of Dissostichus spp. has started to be studied in the southern Ross Sea ... and 58.4.1C. Some studies on biology of the fish have been evaluated, but those are not enough to ...
Meeting Document : WG-FSA-15/56 : Author(s): Delegation of the Republic of Korea
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2016/17
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... Ross Sea Shelf survey from 2012 to 2017. The model estimates of unfished biomass and current status ... were higher than that from the 2015 assessment. This was likely driven by the revised estimates of the ... effective tagging survival and tag detection rates, both of which have decreased in the recent years ...
Meeting Document : WG-FSA-17/37 Rev. 1 : Author(s): S. Mormede
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Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia
accurate identification of age cohorts from the survey data. In this paper a length-based approach is ... described that removes the problem of cohort determination. A bootstrap technique (consistent with the ... current CCAMLR approach) is used to estimate the length distribution of the population from the survey ... data which, in conjunction with the bootstrapped survey biomass data, yields an estimate of the ... ,*, C.T.T. Edwards1,2, R.E. Mitchell2 and D.J. Agnew2 1 Fisheries Group Division of Biology Imperial ... (TAC). One issue is the accurate identification of age cohorts from the survey data. In this paper a ... length-based approach is described that removes the problem of cohort determination. A bootstrap ... technique (consistent with the current CCAMLR approach) is used to estimate the length distribution of the ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew