Résultats de la recherche
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
increase, a trade-off may be drawn between options that displace the fishery from its current operating ... that considerable refi nement of these estimates is possible. Qualitative conclusions are that: under ... the fi rst two options a substantial portion (>65%) of the catch limit would be allocated to three ... ) and (iv) a similar portion of the catch limit would be directed to pelagic SSMUs beyond the foraging ... dynamic option that could be implemented imme- diately with the limited information to hand, and improved ... that krill catches be reported at a scale of 10 by 10 n mile squares by 10-day periods at the end of ... requirement should be considered an interim measure and that haul-by-haul data by 10-day periods should be ... fraction of the total precautionary catch limit (Y) that can be taken in the ith SSMU; and Σai = 1. A ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Auteur(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins
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e-sc-vii-a5.pdf
... fish size, with the requirement that any incidental catches of undersized fish should be discarded ... it is planned that such summaries will be produced for all areas in the future, perhaps amended in ... stocks with particular reference to recruitment patterns and dynamics. Poland, Spain and USSR would be ... in VPA and other studies. The Working Group recommends that the affected age readings be revised as
application/pdf attached to:WG-FSA-88
Meeting Report : WG-FSA-88
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Analysis of haul data from the South Georgia krill fishery
Georgia suggests that fisheries-based indices may be of value for management purposes, consequently ... were produced. The measurements emphasise that the krill fishery at South Georgia was geographically ... several hauls were undertaken by each vessel (average 7.9 in 1993,9.9 in 1995, and 7.0 in 1996), with ... establish the time required for each phase of the fishing operation. The times associated with shooting and ... that fisheries-based indices may be of value for management purposes, consequently further detailed ... and that times and positions were consistent with other records. A few records (-1.5%) contained ... irregular, with the greatest shift in August and September, at the end of the season when there are fewer ... (Table 2). That this period was variable with substantial differences between years is consistent with ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Auteur(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes
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CCAMLR ecosystem monitoring and management: future work
management procedure which includes decision rules that specify how harvest controls will be adjusted based ... managing fisheries with the maintenance of ecological relationships included in the conservation objectives ... on the scientific information available and the assessments that arise from such information. To ... , incorporating: (i) operational objectives that articulate the target conditions of relevant aspects of the ... be infl uenced by the population abundance of krill combined with the factors that infl uence the ... controls will be adjusted based on the scientifi c information available and the assessments that arise ... application is based on a management procedure with pre-agreed decision rules that specify how harvest ... needs to determine what else may be required to ensure that the application of these precautionary ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Auteur(s): Constable, A.J
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A review and preliminary analysis of CEMP data
methods would ensure that everybody is satisfied with the existing methods, and new guidelines regarding ... could be performed with the CEMP data, since the flying seabird and seal data have not yet been examined ... Abstract: A review of the data in the CEMP database revealed minor inconsistencies that have now ... been amended. These inconsistencies had no effect on the CEMP indices, but needed to be corrected ...
Meeting Document : WG-EMM-02/7 : Auteur(s): Secretariat
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Program of research to improve the seabird by-catch mitigation effectiveness of the Spanish system of longline fishing
weighting systems, including replacing with steel sinker weights the bags of rocks that are traditionally ... between line weights that occurs with the CCAMLR line weighting regime to expedite sink rates in surface ... step-wise approach will be taken using a chartered fishing vessel in Chile to trial various line ... waters, and (b) reduce the incidence of line weight hook-ups on the seabed. A line weighting system that ...
Meeting Document : WG-FSA-05/12 : Auteur(s): G. Robertson (Australia) and C. Moreno (Chile)
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
mass is shown to provide a good indicator of local krill density. The index is likely to be little ... in krill availability. Condition index provides a useful proxy for krill density and is likely to be ... of considerable value in interpreting the results from ecosystein assessments such as that in ... clear that 'good' and 'poor' krill status are not j ~ s t seasonal categories, but need to be ... can vary but, for this study, we assume that the greatest variation is likely to be present in the ... from this that condition index is following food availability with a short, of the order of a month ... region of deep water, the degree of separation means that there are likely to be different feeding ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Auteur(s): Everson, I. and K.-H. Kock
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DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN THE INDIAN OCEAN SECTOR OF THE SOUTHERN OCEAN
. These scenarios indicate that this stock is likely to be depleted and fishing should cease. Recovery ... trajectories indicate it is likely that it will be at least 5 years before it is sufficiently low risk to ... and commercial fishing and it is likely that they are depleted below the threshold for CCAMLR ... fisheries. An updated assessment of that status the stock at BANZARE Bank using data from the recent seasons ...
Meeting Document : WG-FSA-09/44 : Auteur(s): D.C. Welsford, A.J. Constable and J.P. McKinlay (Australia)
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Chapter 5: Managing Fishing Activities
-compliance – to give full effect to CM 10-10, paragraph 3(iii)(d), that may be applied by the Commission ... measures that will be the focus of its evaluation for which non-compliance could significantly undermine ... from the Convention Area that occur outside of the Convention Area, detailed information should be ... ) amending CM 10-07 so that fishing vessels that are determined to be without nationality sighted engaged in ...
Page : Site Section: The Organisation
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Discrimination of two species of grenadier (Gadiformes, Macrouridae), Macrourus whitsoni and M. caml, in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2) on the basis of otolith morphometrics
provides some evidence that they could be separate stocks in the two CCAMLR Subareas. Author(s): M.H ... used to test whether the otoliths of the two species can be discriminated. Samples of both species of ... in α for M. whitsoni between subareas 88.1 and 88.2 [t (218) = 4.20, p < 0.001 ***], which ...
Meeting Document : WG-FSA-14/63 : Auteur(s): M.H. Pinkerton, C. Ó Maolagáin, J. Forman and P. Marriott (New Zealand)