Search results
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
, the last one as recent as 24 August 2001. On the fi rst aerial survey in September 1996, illegal ... being negotiated by the South African Fisheries Policy Development Committee for incorporation ... August 1997. Fishery Development The Prince Edward Islands EEZ fi shery for toothfi sh by South ... , despite some positive signs that South African ports are now seldom (if ever) being used ... its pre-exploitation level. Projections suggest that the annual catch limit should be reduced to a ... a robust indication that the spawning biomass has been depleted to, at most, a few percent only of ...
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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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
in the fishery being assessed. New Zealand identified an interim list of taxa to monitor in fishery by-catch ... ) requires a specific list of the taxa that are considered vulnerable in the fishery being assessed. New ... a specific list of the taxa that are considered vulnerable in the fishery being assessed. New Zealand ... to maturation may be considered as being at risk because their recovery rates could be much less than ... , www.scarmarbin.be), and samples retained by New Zealand scientific observers during the 2009 Ross Sea toothfish ... and sponges (Brodeur, 2001; Heifetz, 2002; Husebø et al., 2002; Krieger and Wing, 2002; Buhl-Mortensen ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Author(s): Parker, S.J. and D.A. Bowden
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A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data
, and hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... vessels in 2001, and tagging has been an ongoing requirement for all vessels fishing in the fishery since ... program was initiated by New Zealand fishing vessels in 2001, and tagging has been an ongoing requirement ... as indices of abundance (Harley et al., 2001), particularly in developing fisheries with short time series ... and Fournier, 2001; Punt et al., 2000) and occasion- ally abundance (Candy and Constable, 2008; Haist et al ... program was initiated by New Zealand vessels in 2001 and after the subsequent recapture of several ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Author(s): Mormede, S., A. Dunn and S.M. Hanchet
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Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen
concern that stocks are being over-harvested (SC-CAMLR, 1996). Toothfi sh is a valuable resource ... FV Northern Pride, and in August/September 1999 by the trawler FV Kerguelen de Trémarec, fi shing ... crenellations (Everson, 1980; Ashford, 2001). The revealed section was fi ne-ground and polished using ... : the mean age of the readings for each section was used as its reference age (Ashford, 2001). Reference ... sexes were found, estimating von Bertalanffy parameters for males to be L ∞ = 95.9, K = 0.12, t 0 = –4.6 ... estimated to be –0.6 years and residual variance 2.9. Age distributions of toothfish caught by two vessels ... showed discrepancies due to gear-specific catchability, or differences in the available population with ... trawlers and longliners at Kerguelen, and longevity was estimated to be 36 years. Total instantaneous ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Author(s): Ashford, J., G. Duhamel, C. Jones and S. Bobko
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Do krill and salps compete? Contrary evidence from the krill fisheries
/ Description: Salp by-catch and krill discolouration (039;green039; krill) caused by active feeding ... interpreted that the occurrence of salps is linked with temperature variability, which may be an indicator ... areas with lower, more suitable densities of phytoplankton. Krill catches in those areas could be ... SALPS COMPETE? CONTRARY EVIDENCE FROM THE KRILL FISHERIES S. Kawaguchi, T. Ichii and M. Naganobu ... t . Les raisons pouvant expliquer ces phenomilnes sont discutees. , L ( ~ H H ~ I ~ H 3 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Author(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
, 2001). This level is not considered excessive, being much less than the precautionary catch limit ... ). Fishing for Patagonian toothfish (Dissostichus eleginoides) began in the 1970s as part of the mixed ... of their krill fisheries. A total of 6.1 million tonnes of krill was taken between 1973 and 2001 (Miller, 2002 ... ). The fishery has been stable for the past nine years with the catch in 2002 being 98 414 tonnes (SC-CAMLR ... , together with suggested further areas for investigation. Amongst the key inferences of the study are that ... trend levels that has become available since the postulate was first advanced is discussed. The ... stable; (iv) baleen whales have to be able to achieve relatively high growth rates to explain observed ... trends; and (v) Laws’ (1977) estimate of some 150 million tonnes for the krill surplus may be appreciably ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Author(s): Mori, M. and D.S. Butterworth
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Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia
of feeding trips made by an individual’039;s mother during lactation. This analysis showed that between ... trips, with 1979 being the year with the fewest trips made during the entire 20 year period. (In press ... significant increasing and decreasing trends in the mean number of feeding trips, with 1979 being the year ... of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ... OKa3anCH rOAoM, KorAa 6bInO cAenaHo HaWMeHbwee KOnWqeCTBO BhlxoAoB 3a BeCb 20-neTHwfI nepwoA ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Author(s): Bengtson, J.L.
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By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
, Armstrong039;s fish by-catch data were not presented in a standardised manner. This paper presents a brief ... no ~ e n b ~ a - p a c n p e ~ e n e ~ m . B CpeAHeM OKOnO 14 pb16 BblnaBnMBaJIOCb Ha TOHHY KpMJlX, H 25 pb16 Ha YaC Tp~JIeHHX. B nnaHe Be ... . D ~ H H ~ I ~ TpaneHAR NO. 17 B PaCYeT BKnloYeHbi He 6b1n~. PHCYH~K 1: M ~ C T O ~ O J I O X ~ H H ~ Be ... AeHHR IlpoMbICJla CYAHOM Chiyo Maru NO. 2 B nepM0A RHBaPb-MaPT 1995 r. OGwee IIOnOXeHTAe BeAeHAR npOMbICna yKa3aHO ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Author(s): Watters, G
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A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements
effective at reducing sea- bird attacks and mortality than a single streamer line (Melvin et al., 2001 ... to be more effec- tive than the streamer line specifi ed by CCAMLR (SC-CAMLR, 2002; Fenaughty, 2001; Smith ... , 2001). Based on these observations, the CCAMLR ad hoc Working Group on Incidental Mortality Arising ... in order to achieve seabird conservation in world longline fi sheries (Melvin and Robertson, 2001 ... : requiring that the streamer line be deployed over the hookline within 100 m of the stern; increasing the ... object be deployed windward of the hookline; and recommending that fishers deploy a minimum of two ... streamer line; requiring that individual branched streamers extend to the water in the absence of wind and ... swell and be attached throughout the aerial extent of a streamer line; including ultraviolet-protected ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Author(s): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
to the total population in a closed and fully mixed population will be equal to the ratio of tagged animals ... and mixing post-release, and the spatial distribution of recapture effort can interact to introduce bias ... also has the potential to bias the estimates of LPE parame- ters, particularly if insufficient mixing ... whales are prevalent which may reduce the likelihood that tagged fish that are being released are eaten ... Paper Title: Factors that may influence the accuracy of abundance estimates from CCAMLR tag ... to identify processes that may introduce bias into abundance estimates derived from tag-recapture ... programs. The methods that have been used in CCAMLR tag-recapture programs to mitigate such biases, or to ... , where it occurs, post-release depredation rates are a priority for new assessments that use tag ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Author(s): Welsford, D.C. and P.E. Ziegler