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1. Ecosystem modelling for the Antarctic krill fishery

   Abstract:  Euphausia superba Dana (Antarctic Krill) has been recognized as a key forage species in ... well as competitors for a common resource. In this context we aim to investigate whether the krill ... fishery and the top predators are competing for krill biomass. This is a cooperative pilot project led by ... University of Concepcion, Chile with the Fisheries Centre at University of British Columbia, Canada. In a ...

   Meeting Document : WG-EMM-01/65 : Auteur(s): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)

2. Trends in mean lengths and selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3

   Abstract:  At its last meeting, WG-FSA noted a declining trend in the mean lengths of toothfish ... also that this trend was halted in 2000. A GLM analysis of these data shows that both area and depth ... . The combined effects of these findings were examined in a set of preliminary analyses of length ... there was a consistent tendency for fish over 90-100 cm to have a lower relative selectivity than ...

   Meeting Document : WG-FSA-01/48 : Auteur(s): G.P. Kirkwood and D.J. Agnew (United Kingdom)

3. Preliminary analysis of seabird by-catch using CCAMLR observer data

   birds (9.4%). Data conformed most closely to a Delta distribution (many zero values and log-normal ... distribution of non-zero values) and were analysed using two Generalised Linear Models, a binomial model for ... presence/absence of seabird catches and a Gamma model for the magnitude of non-zero catches. Sparsity of ... data precluded analysis of seabirds at a taxon level more detailed than albatrosses and petrels ...

   Meeting Document : WG-FSA-99/28 : Auteur(s): D.J. Agnew and J.P. Croxall (United Kingdom)

4. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRU 88.2E for the years 2002–03 to 2010–11

   resulted in a 30% higher estimate of initial biomass than for the 2009 base case. The main reason for this ... this model were 484 t. SSRU 88.2E has historically been assessed and managed as a separate area because ... appropriate to carry out a combined stock assessment based on SSRUs 88.2C–G. This combined stock assessment is ... developed in a separate paper.   Author(s):  S. Mormede, A. Dunn and S.M. Hanchet (New Zealand) Title ...

   Meeting Document : WG-FSA-11/44 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

5. PREDICTING SPECIES DISTRIBUTIONS FROM MUSEUM AND HERBARIUM RECORDS USING MULTI-RESPONSE MODELS FITTED WITH MULTIVARIATE ADAPTIVE REGRESSION SPLINES

   overcoming these difficulties, analysing a range of data sets using the technique of multivariate adaptive ... computational environments such as a Geographic Information System. MARS also has the advantage that it can ... model multiple responses, meaning that it can combine information from a set of species to determine the ... total set of presence-only sites for a biological group, and using simultaneous analysis of multiple ...

   Meeting Document : WS-VME-09/P02 : Auteur(s): Elith, J., Leathwick, J.

6. ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES

   Abstract:  Over the past few years WG-EMM has been developing a management procedure for the krill ... catch limit among a set of small-scale management units. So far the Working Group has identified six ... - subdivision based on the distribution of historical catches). In recognising the need for a “staged ... fishing) until a future date. The remaining three options propose subdividing the catch limit according to ...

   Meeting Document : WG-EMM-08/12 : Auteur(s): P.N. Trathan and S.L. Hill (United Kingdom)

7. GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH

   Abstract:  In April 2008 the UK undertook a bottom trawl survey of CCAMLR Sub-Area 48.3 on the FV ... (2003), the biomass of mackerel icefish was estimated to be 80,426 tonnes, with a lower 1-sided 95% CI ... in the NW South Georgia area. A preliminary short-term projection of the mackerel icefish stock was ... was successful. The icefish appeared to be dispersed, which is amenable to a random trawl survey ...

   Meeting Document : WG-FSA-08/28 : Auteur(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)

8. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97

   was estimated that the incidence of entanglement was 0.33%. Data are compared with results from a ... packaging bands were the main entangling materials at both sites, a greater proportion of fur seals was ... was seen to have a neck collar loose enough to come off. Since 1991, 47 entanglements have been ... Islands. However, it is difficult to determine if this is a site specific difference or a product of ...

   Meeting Document : SC-CAMLR-XVI/BG/07 : Auteur(s): Delegation of the United Kingdom

9. Incidental mortality of seabirds associated with longline fishing in Subarea 48.3 – preliminary results of scientific observations onboard the Chilean longliner, Puerto Ballena, from March to May 1996

   observations on the by-catch of seabirds during a cruise of the Chilean longliner 'Puerto Ballena' in ... Statistical Subarea 48.3. A total of 118 dead black-browed albatrosses, 3 dead grey-headed albatrosses, 46 ... numbers of dead seabirds from a subsample of hooks to the total number of hooks in a set which warrant ... by crew members as a minimum estimate, these figures appear by far too high to be sustainable by both ...

   Meeting Document : WG-FSA-96/31 : Auteur(s): Selling, J., Kock, K.-H.

10. The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin

    Abstract:  The mackerel icefish (Champsocephalus gunnari) is a prominent member of the coastal ... fish fauna of the Seasonal Pack-ice Zone and the islands north of it. Separated into a number of stocks ... comparable to similar sized nototheniids and channichthyids. Stocks of C. gunnari have a number of biological ... ability to reproduce at an early age coupled with a comparatively high fecundity and growth performance ...

    Meeting Document : WG-FSA-96/24 : Auteur(s): Everson, I., Kock, K.-H.

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