Résultats de la recherche
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
male Antarctic toothfish Dissostichus mawsoni from fish sampled in the Ross Sea spanning the 2000-2009 ... fishing seasons. The female spawning ogive incorporates the proportion of sexually mature fish that do not ... management decision rules. A characterisation of the oocyte developmental cycle of Antarctic toothfish shows ... that primary endogenous growth can occur for an extended period with oocytes accumulating at the ...
Meeting Document : WG-FSA-09/37 : Auteur(s): S.J. Parker and P.J. Grimes (New Zealand)
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Hydrographic conditions in the Elephant Island plateau region during December 1996
the distribution of biotic, and abiotic parameters. Analysis of time series data at a station site to ... Abstract: Based on historic data as provided by the World Ocean Atlas 1994, the general climatic ... background for temperature, salinity and silicate is given for the area between the Fa1kland (Malvinas ... ) Islands and the Antarctic Peninsula Region. A data set sampled during December 1996 in the Elephant Island ...
Meeting Document : WG-EMM-97/06 : Auteur(s): Stein, M.
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Factors influencing Antarctic krill distribution in the South Shetlands
Abstract: The influences of biological and physical factors in the environment upon krill ... (Euphausia superba) distribution were studies in the area north of South Shetland Islands during 1990/91 ... in mid-summer the abundance was low in the oceanic zone (8.5 g/m2), while higher in the slope frontal ... zone (37.3 g/m2), and the highest along the shelf break (135.1 g/m2) in the inshore zone; krill were ...
Meeting Document : WG-KRILL-93/38 : Auteur(s): T. Ichii, H. Ishii and M. Naganobu (Japan)
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
primarily based on the 2005 assessment implemented in the Generalised Yield Model (GYM) using survey data of ... the abundances of juvenile fish but adding fishery catch-at-length data, including a standardised ... catch-per-unit-effort (CPUE) series. The base-case scenario was then extended to include estimates of ... IUU catch and mark-recapture data. Key sensitivity trials were also used to explore the tension ...
Meeting Document : WG-FSA-SAM-06/14 : Auteur(s): A. Constable, S. Candy and I. Ball (Australia)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... Georgia for the 17th consecutive winter (2006) and 19th consecutive summer (2006/07) are reported here. A ... total of 41 winter entanglements were observed in the reporting period compared to 2 observed in the ... previous winter. This is the second highest winter total since records began in 1990 (the highest was in ...
Meeting Document : SC-CAMLR-XXVI/BG/17 : Auteur(s): Delegation of the United Kingdom
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Fisheries in the Southern Ocean – an ecosystem approach. Trans. Roy. Soc. Lond. (in press)
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... extended to the application of a precautionary approach in the late 1980’s. In our review we deal primarily ... with the science–related aspects of CCAMLR and its development towards an ecosystem approach to the ... management of the living resources of the Southern Ocean. To assist the Commission in meeting objectives, as ...
Meeting Document : SC-CAMLR-XXIV/P01 : Auteur(s): Kock, K.-H., K. Reid, J. Croxall and S. Nicol
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Abstract: A new method for estimating illegal fishing effort is put forward. The results from ... this new method are similar to the Agnew and Kirkwood method and this suggests that the current method ... observations reflects zero illegal fishing. The new method performs better in the case of zero detections and ... can potentially better handle the evasion of detection by illegal activity. Both the new and the ...
Meeting Document : WG-FSA-04/63 : Auteur(s): I. Ball (Australia)
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Preliminary standardised CPUE analysis of the New Zealand toothfish fishery in Subarea 88.1 from 1997/98 to 2001/02
Abstract: This report provides the first analysis of standardised catch per unit of effort (CPUE ... ) from the exploratory fishery for Antarctic toothfish Dissostichus mawsoni, which has operated in ... Subarea 88.1 for five seasons, from 1997 to 2002. Two analyses are presented. The first (all-ground ... ) analysis reviewed catch from 1998 to 2002 (excluding the 1997 season as insufficient data were available ...
Meeting Document : WG-FSA-02/41 : Auteur(s): R.G. Blackwell and S.M. Hanchet (New Zealand)
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Notes on Champsocephalus gunnari biology, availability, diet and spatial distribution in the South Shetland and South Orkney Islands (Subareas 48.1 and 48.2)
Abstract: Stocks of the mackerel icefish Champsocephalus gunnari in the Southern Scotia arc ... region of the Southern Ocean (CCAMLR Subarea 48.1 & 48.2) have several different biological ... characteristics than stocks in the Northern Scotia Arc. The history of commercial C. gunnari exploitation in the ... Southern Scotia Arc was short lived and intense, and led to the collapse of the stocks. Stocks in this ...
Meeting Document : WAMI-01/10 Rev. 1 : Auteur(s): C.D. Jones and J. Emery (USA)
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Modelling the impact of fishery by-catches on albatross populations
Abstract: 1. Several albatross species, including the wandering albatross Diomedea exulans, have ... -catch in longline fisheries and this mortality has been implicated in the population declines. 2. We ... developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... the Crozet Islands, data on albatross abundance from 1960 to 1995, and reported effort data from the ...
Meeting Document : WG-FSA-01/18 : Auteur(s): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)