Search results
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
fishing To simulate a multi-year research fishing pro- gram, constant catches (from 15 tonnes yr–1 to 90 ... of a stock within a 2–3 decade time frame and thus result in a failure to achieve the objectives of Article ... ) for a description of the CCAMLR decision rules and their relationship to Article II of the Con- vention ... -down phase Catch during research phase 5 11 1 Jan–30 Dec 0–945 tonnes yr–1 (see Table 2) 0–90 ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Author(s): Welsford, D.C
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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
made by the Antarctic Treaty Meeting of Experts in 2010. File: Trathan et al.pdf ... one of the recommendations made by the Antarctic Treaty Meeting of Experts in 2010. ... (Subarea 48.1) between 1978/79 and 1989/90. Most fishing occurred in the two seasons 1978/79 and 1979/80 ... would fulfil one of the recommendations made by the Antarctic Treaty Meeting of Experts in 2010 ... , marine habitats and communities beneath them remain fully pro- tected as they are difficult to access ... the Antarctic benthos, but raised temperature will probably increase survival rates, if invading species can ...
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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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
, 2005b) reviewed Antarctic icefish (Channichthyidae), but presented little informa- tion on C. dewitti ... . Eight species of icefish have been reported caught in the fishery in the CCAMLR vessel log- book (C2 ... weight, however, this proved to be unnecessary due to the high pro- portion of fish with empty stomachs ... zone to the date when the ith fish was captured. Hence, ti,1 = ti, end first opaque zone – ti ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Author(s): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
addressing rate processes. This review aims to summarise these data and show where it resides, to assist SO ... on their distribution with a minority addressing rate processes. This review aims to summarise these data and show where ... . This review aims to summarise these data and show where it resides, to assist SO food-web modellers or those ... and birds. Atkinson et al. 172 Introduction During the 80-year history of active research on Southern ... , with their associated caveats, to a non-specialised user group. This review is aimed primarily at modellers, data ... searches. For more detailed reviews of ecology, life cycles and controls on distribution (including group ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Author(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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An assessment of toothfish in Subarea 48.3 using CASAL
, results of full MCMC runs are presented for selected assess- ments that best meet all the goodness-of-fit ... ., 2006a) to be between 5 and 11%. A conservative value of 10% (i.e. immediate tagging survivorship of 90 ... of M used so far in the sensitivity trials are undoubtedly rather high for an animal with the longevity ... size in year Y, nY is the number of marked animals in the population prior to taking the sample ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 65–95 : Author(s): Hillary, R.M., G.P. Kirkwood and D.J. Agnew
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Some thoughts on precautionary measures for the krill fishery
estimates can be made, leading to more precise conservation measures. Article I1 of the CCAMLR Convention ... be between 100 and 200 million tonnes. Assuming a pro rata distribution of predation pressure this would ... that 80% of the krill consumed is taken by macaroni penguins and fur seals the major impact is within ... of selected land-based predators and not on the requirements of all predators. The difference mentioned ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Author(s): Everson, I. and W.K. de la Mare
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Chilean krill fishery: analysis of the 1991 season
season .,.-I 100 co ...r 90 ctl Q) "- 80 ctl .0 ::J 70 Cl) 60 E 0 '-....... 50 .c () 40 ... encircled. 281 Chilean Krill Fishery Analysis of 199 'I season 90 ~·_~w __ 80 ... ) including among other jobs to review and evalu~te information concerning the size, distribution ... , paragraph 2.26). At its 1989 meeting, WG-KriU agreed that analyses of haul-by-haul data should commence ...
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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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
with other informative estimators for stock abundance and productivity, the review and the simulations ... with other informative estimators for stock abundance and productivity, the review and the simulations ... the Commission is able to achieve the objectives of Article II, notably maintaining stable recruitment ... , the review and the simulations highlight that interpretation of raw length-frequency data and single length ... Years to project stock in simulation 60 y Reference start date in year 01/12 Increments within year ... CCAMLR’s Article II in the long term. Maybe more promising are decision trees that combine indicators ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable
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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review that fish ... taken by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review ... of the Southern Ocean. It is clear from this review that fish are important predators of krill, in particular ... is concentrated between 0° and 90°W. 87% of krill occurs over deep water (>2 000 m) and occupies regions ... in understanding their high total pro- duction (Atkinson et al., 2008). The last estimate of krill biomass ... and the large baleen whales in the first 80 years of the 20th century (the so called ‘krill surplus hypothesis ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Author(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
of the Seventh Meeting of the Scientific Committee, (SC-CAMLR-VII), Annex 5. CCAMLR, Hobart, Australia: 90-167 ... that large-scale fishing may have taken place prior to 1970, although details of catches prior to that date ... as, and reinforces, an earlier study (SC-CAMLR, 1989) which was undertaken during the meeting of the CCAMLR ... in detail at the WG-FSA meeting by Sparre (1989). Pending the provision of further information, WG-FSA ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Author(s): Everson, I