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Management and assessment options for the crab fishery around South Georgia
options for the crab fishery around South Georgia together with the requirements of Article I1 ... animals. The size at which moulting occurs less than once a year can often be simply estimated and gives ... fishery in Subarea 48.3 with specific reference to Article I1 of the CCAMLR Convention. In the final ... part of the stock. The target for the Alaskan king crab is between 20 and 60% depending on whether ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Author(s): Basson, M. and D.D. Hoggarth
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
in Table 5, together with those for projections to 2010 and to 2020 under a future constant annual catch ... in C PU E tr en d 24 2 97 (2 0 20 1; 3 4 54 3) 30 0 79 -2 .9 36 84 8 0. 39 ... Figure 1: Population model fi ts and 20-year projections in terms of both the spawning and exploitable ... 2009 2012 2015 2018 2021 Year Bi om as s (t) 0 400 800 Exploitable biomass projections for base ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Author(s): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller
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Chilean krill fishery: analysis of the 1991 season
ro () 30 ....... 0 Q) 20 O'l ctl -10 c Q) Q 0 "-Q) (L 1977 1979 1981 1983 1985 1987 1989 ... .. --,-----, .. ---'-----------;'t;--'---"??--------"'" ;§ l Year average = 108 J 40 -+-----, 1 5 10 15 20 25 Fishing day (Starting 20/02/91) Figure 2: Total ... 15 20 25 30 35 Fishing day (Starting 20/02/91) Figure 7: Daily average haul depth Cm) during 1991 ... .H--r i+f 111111-, L~~j r 1 TI r I n r o 1 5 10 15 20 25 30 35 Fishing day (Starting 20/02/91) Figure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Author(s): Marín, V.H., A. Mujica and P. Eberhard
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Consideration of major issues in ecosystem monitoring and management
for bringing these various components together as an ecosystem approach to management is discussed. File ... components together as an ecosystem approach to management is discussed. ... Recruitment normal 50% Survivorship 0 1000 2000 3000 4000 0 10 20 30 40 50 60 70 80 90 100 Year Po pu ... trip duration 2–3 months Several days 20–100 C2 Pup growth 2–3 months 2–3 months 30–150 Calendar dateP ... . A B C A B C (a) (b) 221 Ecosystem monitoring and management 90% Survivorship 0 5000 10000 15000 0 10 20 30 40 50 60 ... 4: The effect of breeding failure and population size. During the fi rst 20 years recruitment is randomly ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Author(s): Everson, I
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Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3
of krill over a 20-year harvesting period from falling below 60% of its average unexploited level; subject ... that TAC reductions may prove necessary during the 20-year period considered. Simulation tests, including ... that TAC reductions may prove necessary during the 20-year period considered. Simulation tests, including ... for the simulation testing of procedures, and an operational definition of CCAMLR Article II to provide criteria ... of krill over a 20-year harvesting period from falling below 60% of its average unexploited level; subject ... that T AC reductions may prove necessary during the 20-year period considered. Simulation tests, including ... increase by a certain percentage (cr) each year over the balance of the 20-year period that is considered ... to prevent the expected lowest biomass of kriU over a 20-year harvesting period from falling below 60 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Author(s): Butterworth, D.S.
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Antarctic krill and ecosystem management – from Seattle to Siena
documenting developments during CCAMLR’s first 20 years of existence. File: 12miller.pdf ... ), with the three papers documenting developments during CCAMLR’s first 20 years of existence. ... to be consistent with the objectives of the CAMLR Convention, particularly its Article II. Emphasis is given ... to be consistent with the objectives of the CAMLR Convention, particularly its Article II. Emphasis is given ... ), with the three papers documenting developments during CCAMLR’s fi rst 20 years of existence. Résumé Il s’agit ... a 20-year period (where Y = yield and B0 = unexploited biomass). Because the model is run many times ... a 20-year period of harvesting, should be equal to 10%’. This approach required an estimate of pre ... with the objectives of the CAMLR Convention, particularly its Article II. Emphasis is given to the initiation ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Author(s): Miller, D.G.M
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
highlights how: CCAMLR Science, Vol. 20 (2013): 139–151 139 PRECAUTIONARY SPATIAL PROTECTION ... forward and it may be years or decades between major calv- ing events. Other changes in the mass balance ... of the northern edge of the George VI ice shelf (67.840°W 71.692°S) which lost ~993 km2 over a number of years ... and volume of deep water in Pine Island Bay has increased in recent years. Faster basal melting under ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Author(s): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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Status of krill target strength
on aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... there is an empirical basis. The theoretical estimates show a non-monotonic dependence of target strength on both animal ... size and transmit frequency, notwithstanding admitted shortcomings. Some recent single-animal ... of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target strength ... at 30 and 20 kHz. Measurements at 30 kHz were performed near Bouvet Island in December 1979 on krill ... of this ! 108 article, a reasonable fixed value of radius of curvature for the animals is used. In order ... of target strength in the article involve aggregations of animals, it is useful to compare the results ... to thresholding effects discussed earlier in this article and differences in animal type), the structure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Author(s): Foote, K.G., D. Chu and T.K. Stanton
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Target strengths of Antarctic krill (Euphausia superba)
kHz TS (dB} at 120 kHz Event Mean no. - no. 1 7 1 9 20 26 28 30 36 37 43 47 50 52 54 ... SC-CAMLR-VII/BG/30 TARGET STRENGTHS OF ANTARCTIC KRILL ... all measurements on the animal of interest, E. superba. The work of K0geler et al. (1987) was noted ... of the object animal by laboratory measurements of density and longitudinal sound speed, among others, 266 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Author(s): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote
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Factors to consider in developing management measures for krill
from year to year. The various techniques used to estimate the abundance of animal populations also ... OTKPbITbIX-3aKpbITbIX paHoHoB H ce30HOB. IIpe~RaraIOTc~ HeKOTopbIe MepbI no ynpaBReHHIO, KOTopbIe Mor RH ... in the past, and this raises the need for new approaches to fishery conservation. In any case, the problems ... and investment required to ensure that the conservation objectives of the Convention are being met ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Author(s): de la Mare, W.K.