Search results
-
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 ... 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 ... OPTIONS FOR ALLOCATING THE PRECAUTIONARY CATCH LIMIT OF KRILL AMONG SMALL-SCALE MANAGEMENT UNITS ... of Antarctic krill (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch limit ... the precautionary 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 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(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
-
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 ... Further computations of the consequences of setting the annual krill catch limit to a fixed ... of the biomass estimate which is set as the catch for a 20-year period. Three possible fishing seasons ... -exploitation level (Ksp), as a function of the fraction of the biomass estimate which is set as the catch ... OF THE CONSEQUENCES OF SETTING THE ANNUAL KRILL CATCH LIMIT TO A FIXED FRACTION OF THE ESTIMATE OF KRILL BIOMASS ... proporciones determinadas de F P . Keywords: krill, catch limit, biomass survey, CCAMLR INTRODUCTION ... catches of immature krill sufficiently low for median B S P to tend to a non-zero limit for large ... are: Annual Krill Catch Computations To effect the refinement of SC-CAMLR (1992) to place a realistic limit ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
-
Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
Paper Title: Alternative methods for determining subarea or local area catch limits for krill ... precautionary catch limit on krill (Euphausia superba) in Statistical Area 48. The measure also implies ... methods of determining subarea or local area krill catch limits are evaluated relative to six criteria ... that allocate the 1.5 million tonne limit by evenly dividing the catch among subareas or by using historical ... SUBAREA OR LOCAL AREA CATCH LIMITS FOR KRILL IN STATISTICAL AREA 48 G. Watters and R.P. Hewitt ... * Abstract CCAMLR Conservation Measure 32/X sets a 1.5 million tonne precautionary catch limit on krill ... or local area krill catch limits are evaluated relative to six criteria: (i) the degree to which ... that allocate the 1.5 million tonne limit by evenly dividing the catch among subareas or by using historical ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Author(s): Watters, G. and R.P. Hewitt
-
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 ... Evaluating the impact of multi-year research catch limits on overfished toothfish populations ... of additional fisheries removals for research purposes needs to be evaluated against the risk that such catches ... and research catches, this study shows that stocks can take decades to recover even in the absence of fishing ... 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 ... -year research catch limits on toothfish populations the end of the projection period to the median un ... scenarios shown in Figure 2, 51 Impact of multi-year research catch limits on toothfish populations ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Author(s): Welsford, D.C
-
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 ... ) during the 1995/96 season Abstract / Description: By-catches of fish taken during a commercial fishing ... 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 ... S . lnicvocephalus are at the limit of their depth distribution. The geographical distribution of by-catch ... BY-CATCH OF FISH IN LONGLINE CATCHES OFF THE KERGUELEN ISLANDS (DIVISION 58.5.1) DURING THE 1995196 SEASON ... generale et appliquee 43 rue Cuvier, 75231 Paris Cedex 05, France Abstract By-catches of fish taken ... . The others were mainly shelf-dwelling species found at the limit of their bathymetric range. An abundance ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Author(s): Duhamel, G., P. Pruvost and D. Capdeville
-
Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
model (GYM) was used by CCAMLR to establish the precautionary catch limit for the Antarctic krill ... (Euphausia superba) fishery. The current precautionary catch limit was based on supplying the GYM ... at the trigger level (lowest catches), at approximately half the precautionary catch limit (intermediate ... ), or at the precautionary catch limit (highest) were conducted. As the values for natural mortality, recruitment variability ... of the precautionary catch limit of 5.61 million tonnes into smaller management units has been established (CCAMLR ... , 2012: CM 51-01). This precautionary catch limit was calculated using the generalised yield model (GYM ... increases in catch. The total precautionary catch limit of 8.6 million tonnes for all areas regulated ... to establish the precautionary catch limit for the Antarctic krill (Euphausia superba) fishery. The current ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Author(s): Kinzey, D., G. Watters and C.S. Reiss
-
Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a
for the initial stock assessment and adaption of catch limits and tagging rates is presented for new ... abundance estimator, is defined whereby catch limits and tagging rates can be adjusted together to define ... plan for exploratory fisheries. The accuracy of the catch limit and tag-rate adaption algorithm ... eleginoides) in Division 58.4.3a with catch limit and tag-rate recommendations being made given the assessment ... assessment and adaption of catch limits and tagging rates is presented for new and exploratory stocks ... whereby catch limits and tagging rates can be adjusted together to define tagging levels ... for exploratory fisheries. The accuracy of the catch limit and tag-rate adaption algorithm is tested using ... 58.4.3a with catch limit and tag-rate recommendations being made given the assessment results and using ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M
-
Some thoughts on precautionary measures for the krill fishery
: The concept of precautionary measures for krill is discussed. A precautionary catch limit, based ... The concept of precautionary measures for krill is discussed. A precautionary catch limit, based ... ) is discussed and it is concluded that such a method is appropriate in setting an overall precautionary catch ... limit in large areas, such as Statistical Area 48, but the approach requires considerable refinement ... is discussed. A precautionary catch limit, based on the potential yield model developed by the CCAMLR ... that such a method is appropriate in setting an overall precautionary catch limit in large areas ... seguimiento del ecosistema de la CCRVMA (CEMP). Keywords: catch limit, CCAMLR, krill consumption, krill ... of these considerations. RECENT PROGRESS TOWARDS A PRECAUTIONARY CATCH LIMIT FOR KRILL In the context of CCAMLR ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Author(s): Everson, I. and W.K. de la Mare
-
Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
expected across all units once the catch limit had been reached. Other units in which fishing ... was not occurring could be monitored as well. This process could help determine whether or not the catch limit ... , it is possible to determine, well in advance of the catch limit being reached, whether or not local restrictions ... equal, to the intensity expected across all units once the catch limit had been reached. Other units ... all units once the catch limit had been reached. Other units in which fi shing was not occurring ... could be monitored as well. This process could help determine whether or not the catch limit ... , it is possible to determine, well in advance of the catch limit being reached, whether or not local ... ). CCAMLR currently manages its fi sheries by setting catch limits for statistical subdivisions ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Author(s): Constable, A.J. and S. Nicol
-
A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
–Antarctic Peninsula region beyond the current operational catch limit requires the development ... and assessment of methods for subdividing the precautionary catch limit amongst smaller spatial units. This paper ... the current operational catch limit requires the development and assessment of methods for subdividing ... the precautionary catch limit amongst smaller spatial units. This paper compiles parameters for use in the ecosystem ... of the krill fi shery in the Scotia Sea–Antarctic Peninsula region beyond the current operational catch limit ... requires the development and assessment of methods for subdividing the precautionary catch limit amongst ... –Antarctic Peninsula region (FAO Statistical Area 48) beyond the current operational catch limit requires ... the development and assessment of meth- ods for subdividing the precautionary catch limit among smaller spatial ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters