Search results
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Some thoughts on precautionary measures for the krill fishery
to provide a sufficient safeguard for land-based predators. A new approach is described which takes account ... to provide a sufficient safeguard for land-based predators. A new approach is described which takes account ... petrel 0.18 Croxall and Prince (1987) Other birds 0.10 Croxall and Prince (1987) Fur seal 4.05" Boyd ... for land-based predators. A new approach is described which takes account of the requirements of land ... decisions. One of the common ways of obtaining information about a harvested marine resource ... not just the land-based predators such as penguins, flying birds and fur seals, but all whales, seals ...
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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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
to thank the members of the New Zealand Antarctic Fisher- ies Stock Assessment Working Group for helpful ... was funded by the New Zealand Ministry of Fisheries under project ANT2011/01. references Agnew, D.J., G.P ... of Water and Atmospheric Research (NIWA) Ltd Private Bag 14901 Kilbirnie, Wellington 6241 New ... Zealand Email – sophie.mormede@niwa.co.nz Abstract A reliable commercial fish tagging program ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Author(s): Mormede, S. and A. Dunn
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Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3
around South Georgia are estimated using a new regression equation. The results of this calculation ... , are proposed. Biomass estimates for the major fish species around South Georgia are estimated using a new ... 48.3 G. Pilling and G. Parkes Marine Resources Assessment Group 8 Prince's Gardens, South ... Georgia are estimated using a new regression equation. The results of this calculation are compared ... during surveys at South Georgia in January/February 1991, January 1992 and January 1994. Previous ... the 170 ft Bolt rope trawl used during the previous year's survey on the MV Hill Cove. The new trawl ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Author(s): Pilling, G. and G. Parkes
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
breeding pairs divided among 18 discrete sub-colonies (Kerry et al., 2000). All birds in four ... ciently long time series on known-age birds from which to determine useful estimates of survival ... made to ensure that all birds occupying these nests each season would carry tags so that long-term ... of tagged birds crossing the weighbridge; (ii) regular checks of breeding birds on the 200 marked nests ...
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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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
and uncertain conditions typical of Antarctic marine ecosystems. This study used Model Predictive Control (MPC ... objectives that EBM implies in the complex and uncertain conditions typical of Antarctic marine ecosystems ... objectives that EBM implies in the complex and uncertain conditions typical of Antarctic marine ecosystems ... conditions typical of Antarctic marine ecosystems; to compare the performance of a feed- back approach ... is revised at each time-step in response to new state estimates. The following sections provide more ... = 4 2 10K = standard deviation 4,1 0.27 10K = ´ 4 ,2 0.18 10K = ´ Stable biomass factor ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Author(s): Hill, S.L. and M. Cannon
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
to February) when fish were distributed in the upper 50-100 m layer. The smallest and less dense ... in summer (December to February) when fish were distributed in the upper 50-100 m layer. The smallest ... (December to February) when fish were distributed in the upper 50-100 m layer. The smallest and less dense ... occurred in summer. After winter, plankton rises towards the surface and new generations begin to develop ... in Figures 16 to 18. It is apparent that vertical distribution of E. carlsbergi concentrations and its ... ** 9 to 12 December, 1988 687 17885 7 -102 26.0 18 to 20 December, 1988 676 11278 9 - 80 16.7 * density ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Author(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996
four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ... of the Antarctic Peninsula indicates that there were four periods of extensive ice cover during the last 18 years ... 18 dernieres annees quatre periodes de glaces marines d'une tres grande superficie. La variabilite ... , G.L. 1991. Marine birds and ice influenced environments of polar oceans. lour. Mar. Sys., 2: 233-240 ... Peninsula indicates that there were four periods of extensive ice cover during the last 18 years ... A H T ~ P K T H V ~ C K O ~ O nonyocTpoBa yKa3bIBaWT Ha TO, Y T O 38 IIOCJIeAHHe 18 JIeT MMenH MeCTO YeTbIpe IIepkiOAa ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Author(s): Hewitt, R
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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)
to myctophid fish and birds. File: Atkinson-et-al-zoo.pdf ... , chaetognaths, small omnivorous euphausiids, amphipods up to myctophid fish and birds. ... Email – aat@pml.ac.uk *New address: Plymouth Marine Laboratory Prospect Place, The Hoe Plymouth PL1 ... and birds. Atkinson et al. 172 Introduction During the 80-year history of active research on Southern ... the role of zooplankton, protozoans and marine snow in its diet (e.g. Price et al., 1988; Marchant et al ... (Alldredge, 1976; Bedo et al., 1993) they contribute to marine snow and carbon export (e.g. Fortier et al ...
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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The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach
contributing to seabird mortality and the associated economic cost to fishermen of bait loss induced by birds ... can be made to sink to a depth greater than that achievable by diving birds within the area astern ... of a ship that is protected by a bird scaring streamer line. The sink rates of bait may vary according ... the protection zone of the line trailed behind longliners to scare birds from baits. In addition ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Author(s): Brothers, N., A. Foster and G. Robertson
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
seasons was observed in Subarea 48.1 (December–February to March–May). However, operational timing has ... ;February to March–May). However, operational timing has remained relatively constant in Subareas 48.2 ... was observed in Subarea 48.1 (December–February to March– May). However, operational timing has remained ... –February; b: March–May; c: June– August; d: September–November). All the spread- sheet analyses were ... was mainly taken during the December–February period, however in the mid-1990s, the March–May period became ... these three SSMUs, the main quarterly periods for fishing in this sub- area were December–February and March ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Author(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu