Resultados de la búsqueda
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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
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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
Antarctic krill fisheries; to illustrate the elements of feed- back control strategies, and the issues that ... formulation of Constable’s (2001) multi-species model in Hill et al. (2006). It is modified to include ... Constable (2001), and harvesting and movement are represented with additive loss or gain terms. Hill ... modelled as normally distributed random vari- ables in each area (Constable, 2001): ( )2, ~ , ii k i KKK σ ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon
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The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
frequently caught species. The ecosystem interactions and function of all lithodids in the region remain ... frequently caught species. The ecosystem interactions and function of all lithodids in the region remain ... Patagonian toothfish (Dissostichus eleginoides) at South Georgia (Agnew et al., 2001). Laboratory studies ... catch (tonnes) July/August 1992 Pro Surveyor (USA) Paralomis sp. 299 September 1995–January 1996 ... American Champion (USA) P. spinosissima 497 August 1999 (14 days) Argos Helena (GBR) P. spinosissima and P ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Autor(es): Belchier, M., T. Peatman and J. Brown
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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
of issues of taxonomic level, organism abundance, or local biodiversity as potential criteria for ... described by Rogers et al. (2008), but they neces- sarily still leave many implementation issues to RFMOs ... . Interactions with fishing gear Benthic invertebrates have been sampled in the Ross Sea for decades, but the ... and habitat types of VME taxa. Therefore, in devel- oping a monitoring tool for detecting interactions ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Autor(es): Parker, S.J. and D.A. Bowden
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
bottom longline in the Ross Sea during the 2001 and 2002 fishing seasons was analysed (3 937 and 5 426 ... stomachs examined respectively). Fish sampled in 2001 were caught at depths of 317 to 2 154 m and ranged ... and ranged from 62 to 197 cm TL. A high proportion of stomachs were empty (34% in 2001 and 49% in 2002 ... identification difficult. Fish were the most important prey category (% F = 86 in 2001 and % F = 77 in 2002), in ... : 105–124. Goldsworthy, S.D., X. He, G.N. Tuck, M. Lewis and R. Williams. 2001. Trophic interactions ... longline in the Ross Sea during the 2001 and 2002 fi shing seasons was analysed (3 937 and 5 426 stomachs ... examined respectively). Fish sampled in 2001 were caught at depths of 317 to 2 154 m and ranged from 58 ... ranged from 62 to 197 cm TL. A high proportion of stomachs were empty (34% in 2001 and 49% in 2002) and ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Autor(es): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
as a proxy for phytoplankton abundance (Bidigare et al., 1996; Smith et al., 2001; Murphy et al ... –19961 1999–2000 LTER Palmer Station archive, online2; (Contributor: William Fraser) see Fraser (2004 ... used were from Palmer Station (data available from LTER Palmer Station archive, online2 (Contributor ... Lynch et al. 158 in mean clutch initiation date was only ~15 days (between 2001 and 2002 at both Cape ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Autor(es): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
last one as recent as 24 August 2001. On the fi rst aerial survey in September 1996, illegal ... , which was limited to the period from 30 October 1996 to 31 August 1997. Fishery Development The ... August 1997 to 1 April 1998) and from 31 August 1998 onwards to provide for year- round access. The ... during April 2001. A crude analysis of the resulting data, based on swept-area methodology (with ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Autor(es): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller
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Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations
interactions with copepods (Atkinson et al., 1999; Hernández-Leon et al., 2001). The last decade, however ... (2000). They identified issues such as accuracy of estimates of krill biomass or numerical density ... et al., 1999; Forcada et al., 2006, 2008; Hill et al., 2012; Boyd and Murray, 2001; Trivelpiece et ... al., 2011; Reid and Croxall, 2001). However, care is needed to relate these measures correctly to ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Autor(es): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)
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A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3
confirmed the 95% rate. File: 12agnew-etal-fsa19.pdf ... diet items by Arkhipkin et al. (2003) and Pilling et al. (2001)), which were placed within the tank ... experimental tanks (Figure 3). Another possible explanation is that toothfish spawn in late July and August ... ): 131–144. Pilling, G.M., M.G. Purves, T.M. Daw, D.A. Agnew and J.C. Xavier. 2001. The stomach ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Autor(es): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno
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Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area
2001/02 year class lasted four months. This was estimated based on a retrospective count of daily ... 500 days (TL 13.1 cm). The pelagic stage of egg incubation development for fi sh of the 2001/02 year ... de la Géorgie du Sud. Les juvéniles se composent de deux classes d’âges issues de la ponte des ... de la classe d'âge de 2001/02 a duré 4 mois. Cette estimation est fondée sur le comptage ... см). Пелагическая стадия инкубационного периода развития икры для рыбы годового класса 2001/02 г ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Autor(es): Shcherbich, L.V