Search results
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
), and this makes initial data collection costs high. However, since foraging ranges only need to be measured once ... necessary to implement this alternative is already being collected. However, more data needs ... to be collected in order to know how predators respond to temporal changes in prey availability (i.e., we need ... , data will need to be collected over a period of years and for a number of areas. The commitment ...
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
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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)
as with the availability of alternate prey in the different regions in the Southern Ocean. Ecosystem models therefore need ... to account for their role. However, several key areas of uncertainty exist, which need to be considered ... of large changes in abundance and community structure of fishes brought about by industrial fishing need ... in the Southern Ocean. Ecosystem models therefore need to account for their role. However, several key areas ... need to account for their role. However, several key areas of uncertainty exist, which need ... brought about by industrial fishing need to be considered when evaluating patterns that have emerged ... - resenting 31 and 15 species respectively (Eastman and Eakin, 2000). Channichthyids are unique among ...
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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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
Science, Vol. 23 (2016): 31–51 31 Is current management of the Antarctic krill fishery in the Atlantic ... needs a practical definition of ‘precautionary’. Hewitt et al. (2002) explain Subarea catch limits ... of the krill stock. More pro- gress is needed to understand how the stock changes at larger scales ... ., 2015)* 48.3 (Fielding et al., 2014) 1996 35.5 1997 46.5 31.7 1998 20.7 38.9 1999 7.8 9.7 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Author(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
structure analysis, then the effect of such inter- ference noise needs to be removed. Background noise can ... , there is a need for the development and consistent application of semi- or fully-automated post-processing ... needs to be determined and applied to differentiate interference noise from ‘target’ echoes ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
Mare, 1996) or of the need for recovery of some species, although models have been proposed fos ... for review). The aim of this paper is to examine the mech- anisms needed to achieve that part of Article ... discussed the need to estimate the relationships between predator survival and krill abundance ... for fisheries in deterlninii~g what aspects of an ecosystem need to be monitored and how such inforniation ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J
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A balanced model of the food web of the Ross Sea, Antarctica
needed to obtain balance were reasonably small for most groups and most parameters. The mean absolute ... /biomass and production/consumption parameters were needed to balance the microzooplankton (34–47%), ice ... . There is a need to establish monitoring of medium and small demersal fishes in the Ross Sea, and to model ... to the initial set of parameters needed to obtain balance were reasonably small for most groups and most ... CCAMLR Science, Vol. 17 (2010): 1–31 A BALANCED ... of parameters needed to obtain balance were reasonably small for most groups and most parameters. The mean ... , production/biomass and production/consumption parameters were needed to balance the microzooplankton (34–47 ... through trophic cascades. There is a need to establish monitoring of medium and small demersal fishes ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Author(s): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
population trends without the need for recourse to environmental change hypotheses. A model is developed ... without the need for recourse to environmental change hypotheses. A model is developed including krill ... observed population trends without the need for recourse to environmental change hypotheses. A model ... -existence equilibrium level for the species considered), needs to be estimated. The condition that all ...
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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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
data (Standard Method A4) have not yet been reported to CCAMLR due to the need to build up a suffi ... and to monitor regularly within the CEMP context. Sensitivity analyses need to be carried out to determine ... . Further thought needs to be directed towards determining exactly how demographic parameters might ... 37 31 18 36 99 0 0. 54 20 00 / 01 35 98 19 39 16 97 0. 87 20 01 / 02 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Author(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database
varies between species (BirdLife International, 2004b). Care needs to be taken when interpreting kernel ... periods that apply to Subarea 48.3 (open 1 May–31 August, closed 1 September–30 April). Assessment ... on the origin and status (breeder, migrant, non-breeder) of the birds observed. However, there is a real need ... westlandica. Mar. Ornithol., 25: 31–36. Freeman, A.N.D., K.-J. Wilson and D.G. Nicholls. 2001. Westland ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Author(s): BirdLife International (prepared by C. Small and F. Taylor)
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
is needed to assess the accuracy of the age estimates, and therefore whether the age data underpinning ... . Therefore, precision needs to be measured prior to any quantitiative validation test. This study provides ... . 3: P e 3 y n b T a T b 1 a ~ a n b 1 3 a ANOVA p~HAOMM'31.IPOBaHHblX ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson