Search results
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POTENTIAL PHENOLOGICAL RESPONSES TO ENVIRONMENTAL VARIABILITY AND CHANGE FOR ADÉLIE PENGUINS
environmental change and have been reported for a range of species around the globe. In Antarctica, there is a ... trends in clutch initiation dates reported for populations on opposite sides of Antarctica. Such shifts ... in breeding phenology can be indicative of environmental change when cues for breeding initiation are ... tightly linked with environmental conditions or may reflect other underlying causes such as changes in a ...
Meeting Document : WG-EMM-11/33 : Author(s): L. Emmerson and C. Southwell (Australia)
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Convener’s summary on intersessional activities of the Subgroup for the Implementation of the CCAMLR-2008-IPY-Survey
Abstract: At its last meeting in October 2004 the Scientific Committee agreed that a synoptic ... acoustic survey in the South Atlantic region would be the most appropriate activity for CCAMLR in the IPY ... 2008. It was agreed that a synoptic acoustic/net sampling survey in the South Atlantic region should ... intersessional steering group to formulate CCAMLR’s Expression of Intend for activities in the IPY and submit ...
Meeting Document : SC-CAMLR-XXIV/BG/02 Rev. 1 : Author(s): V. Siegel (Convener, Steering Group ‘CCAMLR-2008-IPY-Survey’)
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Preliminary assessment of the potential for the proposed bottom fishing activities to have significant adverse impact on vulnerable marine ecosystems
Dissostichus spp. in Subareas 88.1 and 88.2 in 2010/11. This notification included a preliminary assessment of ... Vulnerable Marine Ecosystems (VMEs), as required by CCAMLR Conservation Measure 22-06. In an accompanying ... that the data enclosed will be available for discussion by WG-EMM in their consideration of VME impacts ... (in addition to normal consideration by WG-FSA) should that be desired. The enclosed document was ...
Meeting Document : WG-EMM-10/33 : Author(s): United Kingdom
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Estimation of the green weight of krill caught
Abstract: Vessels operating in the krill fishery in CCAMLR’s Convention Area are required to ... -EMM-14. Estimates of green weight and parameter values are reported in each vessel’s haul-by-haul ... catch and effort data (C1 data). Vessels fishing in 2014/15 used five methods for the direct estimation ... scale and meal conversion. This paper provides a preliminary summary of the data reported so far in 2014 ...
Meeting Document : WG-EMM-15/19 : Author(s): CCAMLR Secretariat
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EXPLORING THE ROBUSTNESS OF THE CURRENT TOOTHFISH SPP. HARVEST CONTROL RULES AND POTENTIAL EXPLOITATION RATE-BASED ALTERNATIVES
Abstract: In this paper a simple biomass dynamic population model is used as a paradigm for the ... dynamics of toothfish spp. in the CCAMLR area. This model underpins a management strategy evaluation ... framework where the process of stock assessment, TAC calculation and implementation and potential changes in ... current harvest control rule employed for assessed stocks of toothfish spp. in the convention area is ...
Meeting Document : WG-SAM-09/14 : Author(s): R. Hillary (United Kingdom)
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Manual: estimating the age of Patagonian toothfish (Dissostichus eleginoides) using transverse cross-sections of otoliths
noted in the growth parameters being used for assessments of toothfish. To assess whether these ... nations participated in a Workshop in 2001 at Old Dominion Unversity with the primary aim of seeking ... conformity in estimating age of Patagonian toothfish (Dissostichus eleginoides). Arising from the workshop ... in reading otoliths; quality assurance and control; and the use of reference sets to monitor ...
Meeting Document : WG-FSA-10/15 : Author(s): K. Underkoffler, N. Ramanna and J. Ashford (USA)
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Application of continuous time Markov chains to modelling animal movement: estimation of movement rates and retention times for Patagonian toothfish
Abstract: The study of animal movement and distribution has been a central focus in ecology since ... little application in data analyses or prediction in studies movement. Here we develop a continuous time ... apply the model to estimate the equilibrium distribution of Patagonian toothfish in the region around ... Heard and MacDonald Islands in the Australian Antarctic zone using to mark-recapture data from the ...
Meeting Document : WG-FSA-SAM-06/16 : Author(s): C. Wilcox, M. Bravington and D. Peel (Australia)
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The Expert Group on 'Pelagic spatial planning of the sub-Antarctic areas of Planning Domains 4, 5 and 6' (PS²456)
Abstract: Paragraph 3.81 of the report of the CCAMLR Spatial Management Workshop in 2018 ... of MPAs in Planning Domains 5 and 6, using the model established for the D1MPA. It noted that not ... everyone involved in the proposed work was directly involved in the CCAMLR community and requested that ... mechanisms be developed to allow external experts to participate in the expert group. This paper develops the ...
Meeting Document : SC-CAMLR-XXXVII/07 : Author(s): A. Makhado, P. Koubbi, A.D. Lowther, F. D’Ovidio, R. Reisinger, P. Pistorious, R. Crawford, P. Trathan and S. Grant
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Development of the Southern Ocean Continuous Plankton Recorder survey
Abstract: The Continuous Plankton Recorder (CPR) Type I was first used in Antarctic waters during ... the 1925–1927 Discovery Expedition, and has been used successfully for 70 years to monitor plankton in ... , seasonal, interannual and long-term variability in zooplankton abundance, species composition and community ... separate temporal and geographical variation in the data. Hence, CPRs are now also towed on the Japanese ...
Meeting Document : WS-BSO-07/P4 : Author(s): Hosie, G., M. Fukuchi and S. Kawaguchi
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Mackerel icefish size and age at South Georgia and Shag Rocks
in the Southern Ocean have supported a fishery since the 1970s. This study has analysed the length ... between 1987 and 2002. Most surveys were between December and February (summer), with one in September ... modality in the length-frequency distributions. Lengths of age-classes derived by these two methods were ... differences in mortality between localities. To compensate for variation in the time of surveys, the mean TL ...
Meeting Document : WG-EMM-03/7 : Author(s): A.W. North (United Kingdom)