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1. Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees

   trees to derive relationships between environmental conditions and the distribution of the adult stage ... of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... Southern Ocean Continuous Plankton Recorder survey (87% from East Antarctica) were used to model the ... waters. We demonstrate that it is possible to obtain reasonable models for both the presence (area under ...

   Meeting Document : WG-EMM-10/P14 : Autor(es): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve

2. 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 : Autor(es): A. Constable, S. Candy and I. Ball (Australia)

3. Simulations to evaluate model performance for Antarctic toothfish stock assessment in the Amundsen Sea region

   Abstract:  The Amundsen Sea region (ASR) is currently managed under a research plan, which has ... shown promising results to date, with 8 interseason tags recaptured in the South area in 2016 and 12 ... (preliminary recaptures) in 2017. The aim of this paper is to ascertain when the Amundsen Sea region stock ... assessment model is likely to provide management advice, and to investigate the effects of using either two ...

   Meeting Document : WG-SAM-17/40 : Autor(es): S. Mormede and S. Parker

4. 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 : Autor(es): Delegation of the United Kingdom

5. 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 : Autor(es): I. Ball (Australia)

6. 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 : Autor(es): R.G. Blackwell and S.M. Hanchet (New Zealand)

7. 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 : Autor(es): C.D. Jones and J. Emery (USA)

8. 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 : Autor(es): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)

9. A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09

   Abstract:  The exploratory fishery for Dissostichus spp. has now been operating for 13 years in ... biological data has been collected on toothfish and the associated bycatch. The purpose of this report is to ... characterise the general fishing patterns over time and, in particular, to identify possible changes to the ... fishery which may be indicative of localised stock depletion. We considered here the catch limit, changes ...

   Meeting Document : WG-FSA-09/36 : Autor(es): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)

10. MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA

    Abstract:  The South Georgia region supports a high biomass of krill that is the subject to high ... inter-annual variability. The lack of a self-sustaining krill population at South Georgia means that ... understanding the mechanism underlying these observed population characteristics is essential to a successful ... ecosystem-based management of any krill fishery in the region. Krill acoustic density data from surveys ...

    Meeting Document : WG-EMM-08/48 : Autor(es): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)

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