Resultados de la búsqueda
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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)
in size structure and abundance. Other issues are specific to polar environments, for example, lipid ... and abundance. Other issues are specific to polar environments, for example, lipid storage which ... ; Pasternak and Schnack-Schiel, 2001). A global analysis of copepod diets showed that ciliates comprise on ... ) and use of large seasonal lipid stores (Hagen et al., 2001). The larvae and post-larvae of E ... al., 2001). In years of low E. superba availability at South Georgia, they can act as an alternative ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Autor(es): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
simply as ‘the model’. The model incorporates only ecosystem com- ponents and interactions considered ... productivity, health, resilience and services. These objectives are also consistent with CCAMLR’s con ... , including one each for krill (productivity) and fishery performance (services) and two (health and ... abundance at beginning of fishing period. Krill Whole model Health (II.3(b) maintenance of the ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews
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Antarctic krill and ecosystem management – from Seattle to Siena
over 500 000 tonnes in 1982 and a total of 6.1 million tonnes being taken between 1973 and 2001 ... required that: (i) harvested populations should be assessed and monitored; (ii) ecological interactions ... of MSY arises from the need to account for interactions between exploited stocks and other species ... interactions are not only relevant to species at similar or lower trophic levels (i.e. ‘related species ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Autor(es): Miller, D.G.M
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A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
potential VMEs; scale of interactions between fishing activities and VMEs; impact of interactions on VMEs ... interactions of bottom fishing gear with VMEs and associated uncertainties from risk analysis is combined to ... interactions between fishing activities and VMEs; impact of interactions on VMEs; and recovery potential of ... VMEs. (ii) Risk evaluation. Information on likelihood and consequences of interactions of bottom ... potentiels ; ampleur des interactions entre les activités de pêche et les VME ; impact des interactions sur ... associées issues de l’analyse du risque sont combinées pour produire des métriques. iii) Élimination ou ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Autor(es): Martin-Smith, K
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
conservation issues. However, estimating the amount of resource depredated can be especially challenging when ... addition to providing a methodology that could be used in other areas with depredation issues, these ... -economic, ecological and conservation issues. However, estimating the amount of resource depredated can be ... with depredation issues, these findings emphasise the critical importance for fishery managers and ... (negative and/or positive effects on depredating species) and conservation issues (impacts on depredated ... longline sets, taking into account spatial heteroge- neity of both the fish resource and the interactions ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Autor(es): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... 2001/02, some catch was reported from APBSE and APBSW during the June–August period (mid-winter ... , operational timing has remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In ... Ecosystem Models (SC-CAMLR, 2005), paying particular attention to the interactions between the krill ... the Antarctic krill fishery (a: December–February; b: March–May; c: June– August; d: September ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects
, and the incorporation of random effects for vessels and YEAR interactions in the linear predictor of ... ; Diggle et al., 1994). Interactions between YEAR and other factors must be averaged out of the linear ... relative abundance for the fi sh- ery. This averaging operation is straightforward if these interactions ... extended quasi-deviance (see equation (3.1) of Lee and Nelder, 2001) for equation (8) that extends the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Autor(es): Candy, S.G
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
magazine/hour. 50-100 kg anchors which sank the mother line quickly to target depths (thereby reducing ... dive recorders were made on the second magazine deployed in a set, a set usually involving eight ... 12 X 6.5 kg weights/magazine as described above. After four days fishing the CFL Pioneer caught in ... further behind the vessel) and weights were deployed every 70 m (i.e. 16 weights/magazine) on the ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Autor(es): Robertson, G.G
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Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery
macrocephalus) interactions have been reported from the black cod (Anoplopoma fimbria) longline fishery in the ... Gulf of Alaska (Mitchell et al., 2002), where interactions ranged from entanglement to depredation of ... and Purves, 1999). Simultaneously many interactions occur with traditional longlines and seabirds ... with similar seabird and marine mammal issues. materials and methods Study area The Chilean ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Autor(es): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes
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Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
size rather than an overestimate of it. File: 03agnew-etal-sam06.pdf ... population size at South Georgia Figure 3: CPUE density interpolated from all data from 2001 to 2004 in box ... box. Open circles represent mean effort (in hooks) from 2001 to 2004, with the diameter of the ... to 2003. The annual cycle described above was then simulated for years 2001 and 2002, but without ... model was simplified by ignoring fish size, growth and selectivity. These issues may have a part to ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Autor(es): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark