Résultats de la recherche
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Evaluation of de la Mare’s composite standardised index for generating a simple time-series summary of many long-term datasets on Antarctic predators: consequences of missing values and criteria for inclusion of predator parameters
found that, for inclusion in the index, parameters should be positively correlated with all other ... for determining the correlation coefficients. These criteria need to be accepted with caution. Further ... parameters present in that year. In this respect, the robustness of the index is dependent on that subset of ... parameters being representative of all the parameters for that year. Clearly, this will depend on how ...
Meeting Document : WG-EMM-98/45 : Auteur(s): A. Constable (Australia)
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Research plan for toothfish in Divisions 58.4.4a and 58.4.4b by Shinsei Maru No. 3 in 2012/13
of 20 % achievable from Petersen biomass estimates may be achieved within three years with an annual ... . However, it should be noted that one of the reasons for small number of recaptured fish and decreased CPUE ... overestimated, while that using CPUE comparison may be underestimated. We propose to continue the mark-recapture ... of ≥ 5 fish / ton will be conducted. The comparison test with the experimental gear, which consists ...
Meeting Document : WG-SAM-12/17 : Auteur(s): Delegation of Japan
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Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4
from tagging returns to average 1109 tonnes since 2010, with a five-year (2015-2019) average biomass of ... as being part of a much larger stock that extends south into Subarea 48.2, 48.6 and possibly 48.5 ... estimate of the local biomass. Author(s): T. Earl and A. Riley Title: Preliminary tag-recapture based ...
Meeting Document : WG-FSA-2019/27 : Auteur(s): T. Earl and A. Riley
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Descriptive analysis of acoustic data collected during the 2003 exploratory fishery for toothfish in the Ross Sea
recordings could be compared with longline catches. Data quality was generally good. Of the 84 line ... deadzone would be over 50 m high for a sea-bed with a slope of 20º. The problem of the acoustic deadzone ... , the inability of the acoustics to ‘see’ close to the bottom is a major limitation that could only be ... recordings, 68 were considered suitable for acoustic analysis. Poor data quality was associated with strong ...
Meeting Document : WG-FSA-03/28 : Auteur(s): R.L. O’Driscoll and G.J. Macaulay (New Zealand)
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Antarctic ecosystem management
. With regard to interim management action, it is recommended that (a) management areas should be ... Abstract: This document describes a framework within which an initial strategy could be developed ... in accordance with the objectives and requirements of Article II of the Convention for the ... models, are necessary for assessing any indirect impact that might arise through the exploitation of ...
Meeting Document : WG-DCH-84/03 : Auteur(s): D.S. Butterworth (South Africa)
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Implanted identification tags in penguins: implantation methods, tag reliability and long-term effects (draft version)
Ad61ie penguins (Pygoscelis adeliae) over five seasons to be consistently higher than that of birds ... birds may actually be lower than that of untagged populations. Migration of tags away from the injection ... with iodine or alcohol. The problem of tag migration is yet to be quantified and may be more difficult ... alternative to flipper banding, but users should be aware that these identification markers may not be ...
Meeting Document : WG-EMM-Methods-96/08 : Auteur(s): Kerry, K., Clarke, J.
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Preliminary results on by-catch of fishes caught by the fishery vessel Chiyo Maru No. 3 to the north of the South Shetland Islands (February to March, 1996)
occurred in hauls with lower krill CPUE. Author(s): Ichii, T., Kawaguchi, S., Naganobu, M. Title ... in 41 hauls. Notothenioid juveniles were found in 30 hauls carried out in waters with a depth of 87 ... in 11 hauls operated at some distance from the shelf, in the offshore waters with a depth of 275 ... -1780m (average 1006m). Notothenioid juveniles never caught with bathypelagic fish species in all hauls ...
Meeting Document : WG-EMM-96/52 : Auteur(s): Ichii, T., Kawaguchi, S., Naganobu, M.
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Compliance requirements for an orderly development of the krill fishery
also applicable to the krill fishery to ensure that the expanding krill fishery continues to be ... consistent with the objective of the Convention. This paper outlines the applicable compliance measures that ... the krill fishery be achieved, unless the measures outlined above are adopted. This is in keeping with ... in Statistical Division 58.4.2 Australia noted that while the scientific data supported an increase ...
Meeting Document : CCAMLR-XXVI/31 : Auteur(s): Delegation of Australia
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Monitoring results of marine debris at Cape Shirreff, Livingston Island during the 1995/96 Antarctic season
. Upon these basis, it is suggested that CCAMLR may produce a booklet with didactic information and ... total of 4 251 articles with a total weight of 65.8 kg were obtained. As occurred in previous seasons ... , the plastic was the principal item (4 015 pieces) with a 94.45%; followed by glass (147 pieces), 3.46 ... %; metal (77 pieces), 1.81%; and paper (12 pieces), with a 0.28% From the plastic item, those used in ...
Meeting Document : CCAMLR-XV/BG/27 : Auteur(s): Delegation of Chile
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An updated assessment of unicorn icefish (Channichthys rhinoceratus) in Division 58.5.2, based on results from the 2015 random stratified trawl survey
Channichthys rhinoceratus to be updated from previous assessments (Constable et al. 1998) and many parameters ... to be calculated which were previously unknown for the area within Division 58.5.2. This paper ... term projections indicate 2208 t for the 2015/16 season and 1689 t for the 2016/17 season, while long ... term projections (20 year) indicate sustainable yield of 1663 t. Author(s): D. Maschette and J. Dell ...
Meeting Document : WG-FSA-15/50 : Auteur(s): D. Maschette and J. Dell (Australia)