Search results
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Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies
are still needed to better understand the way killer whales search and detect vessels, this study gives ... them within a few hours. Although more data are still needed to better understand the way killer whales ... needed to better understand the way killer whales search and detect vessels, this study gives ... to 31 August 2008, 4 289 lines were hauled by the seven legal long- liners operating in the Crozet ... 1 September to 31 August. Observer protocol The data were collected by fishery observers who were required ... between 1 September 2003 and 31 August 2008 (the dashed line represents the French EEZ boundary ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Author(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet
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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
, these grounds rep- resent 31% of the total fishable area (i.e. depth < 2 000 m) in the division. Anomalous ... 6 11 - - - 1 77 6 17 7 12 T O A (k g) - 7 07 2 31 0 86 7 - - - 47 ... sh ed - 18 56 - 36 31 14 1 T O A (n ) - - 2 89 9 2 21 9 - 91 ... 31% of fishable sea floor (deeper than 2 000 m) in the division. Low catch rates are reported ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Author(s): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
2 56 3 40 3 10 90 94 6 3. 3 14 .1 0. 36 0. 31 20 04 11 40 1 53 3 32 ... 1 4. 8 20 .3 0. 31 0. 48 20 06 30 56 1 23 9 36 3 67 0 1 09 6 5. 1 23 ... needs to be done to find out more about the movements of these animals, both during the season ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods ... dynamic models that are needed to assess these methods. These parameters include life history and krill ... that are needed to assess these methods. These parameters include life history and krill consumption parameters ... of the focal species (krill and its dependent predators), such models will need information on key life ... : 0.11 to 1.27 g, SD: 0.31 g, n = 93). Fish The krill-eating fi sh fauna are composed largely ... this study identifi es myctophids as the taxon that consumes most krill, there is a particular need ...
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
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
the establishment of a commercial krill fishery there is an increasing need for reasonable estimates on age, growth ... and supported figures for single age groups. They derived estimates for the 1980/81 season of M = 2.31 ... to be assumed the first mortality rate of M = 2.31 is too high. Age group 3 (44 to 58 mm) of Brinton ... rates possibly needs further improvement, because data on kriU predation are still insufficient or even ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.
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Fish distribution and biomass in the Heard Island zone (Division 58.5.2)
respectively, but increased almost tenfold to 31 701 tonnes during spring 1993. Most of this increase ... 5 10.6 52.4 31.6 5105.8 1.9 NS 168 11.5 1680.8 1555.9 NS 1642.5 NS NS NS NS ... . REFERENCES Estimate 4584 3112 31701 2019 2766 2220 17716 3181 11 881 2846 41378 335 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Author(s): Williams, R. and W.K. de la Mare
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A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data
), but as catches increased, there was a need to develop a more reliable method for estimating abundance ... is that the fish undergo changes in growth rate and natural mortality as a result of being tagged, which needs ... to specific decisions, then further care is needed in order to ensure these deci- sions are consistent ... . Res. Doc. 2005/31: 182 pp. Hampton, J. and D.A. Fournier. 2001. A spatially disaggregated, length ...
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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Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
. There will also need to be communica- tions that support retrieval of satellite images and vessel-based sensors ... in the Antarctic nets and other specialised sampling tools might be more cumbersome and needs some consideration ... freezers (~ –80°C), will also need to be considered. Adequate working space for data analysis is essen ... and person- nel when needed. The required accommodations to support the scientific crew might ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Author(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins
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Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica
in the allelic frequencies for several loci compared to previously published data highlight the need for further ... the need for further study of the genetics of Antarctic toothfish. ... for several loci compared to previously published data highlight the need for further study of the genetics ... 0 0. 33 3 0. 25 0 0. 30 8 0. 25 0 0. 31 5 0. 30 0 TP I:1 27 N 18 17 22 10 ... 39 46 48 A 0. 37 5 0. 36 0 0. 34 3 0. 31 3 0. 40 5 0. 31 6 0. 48 ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Author(s): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev
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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
important challenges, including: (i) the need to meet multiple objectives for krill, its predators ... needing to be refined itself. In control theory it is also possible to continuously refine the control ... are needed for the Antarctic krill stock, its predators and the fishery (Grant et al., 2013). CCAMLR has ... words, they can be used to identify those objectives which are in most need of modification ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Author(s): Hill, S.L. and M. Cannon