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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
Paper Title: Options for allocating the precautionary catch limit of krill among small-scale ... (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch limit of 4 million tonnes and ... catch limit for krill among the SSMUs so as to preclude the inadvertent concentration of catches in a ... small portion of the surveyed area. Five options for allocating the catch limit among the SSMUs in the ... OPTIONS FOR ALLOCATING THE PRECAUTIONARY CATCH LIMIT OF KRILL AMONG SMALL-SCALE MANAGEMENT UNITS IN THE ... to subdivide the precautionary catch limit for krill among the SSMUs so as to preclude the ... catch limit among the SSMUs in the Scotia Sea are presented in this paper. The fi rst four are static ... (>65%) of the catch limit would be allocated to three or less of the SSMUs adjacent to large ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Автор(ы): 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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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
Paper Title: Further computations of the consequences of setting the annual krill catch limit to ... ), as a function of the fraction of the biomass estimate which is set as the catch for a 20-year period ... THE CONSEQUENCES OF SETTING THE ANNUAL KRILL CATCH LIMIT TO A FIXED FRACTION OF THE ESTIMATE OF ... biomass estimate which is set as the catch for a 20-year period. Three possible fishing seasons are ... reproductora de kril descienda por debajo de proporciones determinadas de F P . Keywords: krill, catch ... limit, biomass survey, CCAMLR INTRODUCTION results over the ranges of uncertainty for these ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Автор(ы): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
Paper Title: Estimation of effective sample size for catch-at-age and catch-at-length data using ... distribution of catch-at-age or catch-at-length frequencies using a multinomial likelihood when there is extra ... -multinomial heterogeneity. Accurate estimation of ESS for catch-frequency data for each fishery and fishing ... ., 1998) and Stock Synthesis Program (Methot, 2000, 2005) also limit input of catch-at-length or catch ... Estimation of EffEctivE samplE sizE for catch-at-agE and catch-at-lEngth data using simulatEd data from ... integrated assessments is an approximate but simple way of modelling the distribution of catch-at-age or ... catch- at-length frequencies using a multinomial likelihood when there is extra-multinomial ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Автор(ы): Candy, S.G
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
precautionary catch limit on krill (Euphausia superba) in Statistical Area 48. The measure also implies an ... . Alternatives that allocate the 1.5 million tonne limit by evenly dividing the catch among subareas or by using ... Paper Title: Alternative methods for determining subarea or local area catch limits for krill in ... methods of determining subarea or local area krill catch limits are evaluated relative to six criteria: (i ... * Abstract CCAMLR Conservation Measure 32/X sets a 1.5 million tonne precautionary catch limit on krill ... . Alternatives that allocate the 1.5 million tonne limit by evenly dividing the catch among subareas or by using ... Conservation Measure 32/X. This conservation measure sets a 1.5 million tonne precautionary catch limit on ... limit could be allocated between subareas or local areas if the total catch in Subareas 48.1 (Antarctic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Автор(ы): Watters, G. and R.P. Hewitt
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Spatial distribution of management measures, Antarctic krill catch and Southern Ocean bioregions: implications for conservation planning
Paper Title: Spatial distribution of management measures, Antarctic krill catch and Southern ... between habitat (bioregion), existing spatial management and Antarctic krill catch in the Southern Ocean ... distribution of catch within the open fraction. For example, only 26% of the total area open to krill fishing ... open area. Information on the distribution of catches and catch limits among different bioregions could ... subdividing the krill catch limit in the Scotia Sea and southern Drake Passage (SC-CAMLR, 2002; Hewitt et al ... area was open to directed fishing (i.e. had a catch limit of >0 for at least one species). Most ... % of the combined catch limit for krill across the CCAMLR area is allocated to four subareas in Area ... fishing season, the trigger level in Subareas 48.1 to 48.4 (the effective catch limit for krill until ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 1–19 : Автор(ы): Grant, S.M., S.L. Hill and P.T. Fretwell
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An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
(CCAMLR Division 58.4.3b) based on fine-scale catch and effort data Abstract / Description: In 2006, the ... fine-scale catch and effort data held by CCAMLR for BANZARE Bank, as well as descriptive analyses of ... depletion analysis of stratified catch and effort data indicate that there is strong evidence for depletion ... -catch species by on-board scientific observers was noted, limiting meaningful analysis of patterns in by ... . mawsoni. As an explora- tory fishery, the catch limit for the division has been nominally set at 300 ... catch limit being reached or exceeded before the conclusion of the season (SC-CAMLR, 2006c). In 2006 ... catch limit for this region in the 2005/06 and 2006/07 sea- sons by 5.2 and 7.6 times respectively (SC ... on fine-sCAle CAtCh AnD effort DAtA J.P. McKinlay, D.C. Welsford, A.J. Constable and G.B. Nowara ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Автор(ы): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season
Paper Title: By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1 ... at the limit of their bathymetric range. An abundance index was used to show bathymetric and ... geographical distributions of the most common by-catch species. The size of some by-catch species shows that ... BY-CATCH OF FISH IN LONGLINE CATCHES OFF THE KERGUELEN ISLANDS (DIVISION 58.5.1) DURING THE 1995196 ... others were mainly shelf-dwelling species found at the limit of their bathymetric range. An abundance ... index was used to show bathymetric and geographical distributions of the most common by-catch species ... . The size of some by-catch species shows that they could be of interest commercially if longline ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Автор(ы): Duhamel, G., P. Pruvost and D. Capdeville
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Paper Title: Evaluating the impact of multi-year research catch limits on overfished toothfish ... , and relatively low levels of research catch can significantly delay the recovery of a stock. Scenarios ... of B0 or SSB0, and so a precautionary re- search catch limit may not be able to be determined in a ... , 2009a). Therefore, the level of research catch should maximise the infor- mation gained from the ... II of the CAMLR Convention. Determining precautionary catch limits for re- search fishing has been ... rEsEarch catch lImIts on ovErfIshEd toothfIsh populatIons D.C. Welsford Department of Sustainability ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Автор(ы): Welsford, D.C
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Assessments of by-catch in trawl fisheries at Heard and McDonald Islands
Paper Title: Assessments of by-catch in trawl fisheries at Heard and McDonald Islands Abstract ... as by-catch: Channichthys rhinoceratus, Lepidonotothen squamifrons and Bathyraja spp. (deep-water ... commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in 1996 to ... by-catch during commercial activities in 1996/97 was approximately 5%, 58% and 11% of the respective ... ASSESSMENTS OF BY-CATCH IN TRAWL FISHERIES AT HEARD AND MCDONALD ISLANDS A.J. Constable, R. Williams and ... as by-catch: Channichthys rhinoceratus, Lepidonotothen squamifions and Bathyraja spp. (deep-water ... during commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in ... B. eatoni), the total by-catch during commercial activities in 1996/97 was approximately 5%, 58 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Автор(ы): Constable, A.J., R. Williams and W.K. de la Mare
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Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
seabird by-catch in the longline toothfish fishery around South Georgia Abstract / Description: A series ... used. Therefore to minimise seabird by-catch, line-weighting regimes of at least 8.5 kg at 40 m ... intervals should be used. Results suggested that seabird by-catch on lines using effective weighting regimes ... EVALUATION OF THE EFFECTIVENESS OF WEIGHTING REGIMES IN REDUCING SEABIRD BY-CATCH IN THE LONGLINE ... when 12.75 kg was used. Therefore to minimise seabird by-catch, line-weighting regimes of at least 8.5 ... kg at 40 m intervals should be used. Results suggested that seabird by-catch on lines using ... , weighting regime, toothfish, seabirds, by-catch reduction, CCAMLR INTRODUCTION Longline fishing for ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Автор(ы): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
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