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1. Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3

   Abstract:  Trends in mean length and maturity stage of toothfish were examined using observer data ... statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... seasons, suggesting movement of animals both up and down slope at particular times of year. Months with a ... . Examination of maturity data suggests that in addition to a major spawning event in late July/August, there ...

   Meeting Document : WG-FSA-98/58 : Автор(ы): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

2. Marine Protected Areas in the Southern Ocean: update on current status of designated areas

   Abstract:  The development of a representative system of Antarctic marine protected areas (MPAs ... ) will require up to date information on the location, conservation aims and current status of protected ... (ASMAs) with both marine and terrestrial components (all located south of 60°S). A further 3 MPAs have so ... national jurisdictions. The geographic distribution and range of values being protected within these areas ...

   Meeting Document : WS-MPA-11/19 : Автор(ы): S.M. Grant and P.N. Trathan (UK)

3. A toolbox of Marine Protected Area management techniques for the area covered by the Antarctic Treaty and by CCAMLR

   considerable expertise on their identification, establishment, and management.  A global review of MPA ... highlighted the variety of possible ways to help achieve the objectives of MPAs.  The main tools which are ... “toolbox”.  Some of these management techniques have been adapted from terrestrial situations while others ... are novel and are unique to the marine environment.  The tools are presented as a range of approaches ...

   Meeting Document : WS-MPA-11/21 : Автор(ы): WWF and UK Foreign and Commonwealth Office

4. Unhappy feet: the reduction of Adélie and chinstrap penguin populations in the West Antarctic Peninsula/Scotia Sea

   reduction of the populations of Adélie (Pygoscelis adeliae) and chinstrap penguins (Pygoscelis antarctica ... . Trivelpiece et al. argue that the reduction of the populations of both species could be attributed to changes ... in the abundance of their main prey, Antarctic krill, which is affected by climate change. In this ... context, CCAMLR should keep a precautionary approach in the management of the krill fishery to reduce ...

   Meeting Document : CCAMLR-XXX/BG/21 : Автор(ы): Submitted by ASOC

5. Estimation of catch rate and mean weight in the exploratory Dissostichus fisheries across Divisions 58.4.1 and 58.4.2 using generalised additive models

   these fisheries. Analyses of C2 catch rate and mean weight data from 2484 longline hauls conducted ... between 2003 and 2011 enabled the development of generalised additive mixed models that were then used to ... make predictions of catch rate and mean weight across fishable depths in both Divisions. Catch rates ... , with most locations within fishable depths predicted to have catch rate of less than 100 kg per 1000 ...

   Meeting Document : WG-FSA-11/35 : Автор(ы): D.C. Welsford (Australia)

6. ANALYSIS OF VME DATA COLLECTED BY UK VESSELS FISHING IN THE ROSS SEA DURING THE 2008/09 CCAMLR SEASON

   Abstract:  Analysis of VME data collected in 2008/09 by UK vessels and national and international ... observers onboard was carried out to explore evidence of VMEs in the Ross Sea. 2008/09 data corroborated ... areas in 88.1I, E and F identified in our previous analysis of data collected by observers on UK vessels ... meaning of our historical CPUE data. Although a positive (exponential) association was apparent between ...

   Meeting Document : WS-VME-09/05 : Автор(ы): Peatman, T., Mitchell, R.E., Pearce, J., Agnew, D.J.

7. ANALYSIS OF ROSS SEA TAGGING AND RECAPTURE RATES

   Abstract:  1. A dataset of all possible combinations of release nation, recapture nation, release ... year and recapture year for tags released and recaptured in the same SSRUs on the slope of 88.1 was ... (caught), all in numbers. 2. The overall size of the dataset was 734 combinations of release year ... the same. 3. This method could be used to identify groups of nations that have similar reporting rates ...

   Meeting Document : WG-SAM-08/07 : Автор(ы): D.J. Agnew (UK)

8. Latitudinal variation of demersal fish assemblages in the western Ross Sea

   °S. The distribution and abundance of 65 species collected in these surveys were examined to ... influence this. Species accumulation with sample frequency did not reach an asymptote, but the rate of new ... species was low suggesting data were adequate for describing the main components of the communities. Three ... broad assemblages were identified, in the southern Ross Sea (south of 74°S), central–northern Ross Sea ...

   Meeting Document : WG-FSA-10/P03 : Автор(ы): M.R. Clark, M.R. Dunn, P.J. McMillan, M.H. Pinkerton, A. Stewart and S.M. Hanchet

9. Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data

   Abstract:  Using the simplest form of an abundance estimator using tag-recapture data, the Lincoln ... against this bias, or to account for their effects in assessment models. In nearly all cases, examples of ... these biases. Estimates of post-capture mortality, tag detection rates and where it occurs, post-release ... depredation rates are a priority for new tagging programs and tag-based assessments. Due to the complexity of ...

   Meeting Document : WG-SAM-12/23 : Автор(ы): D.C. Welsford and P.E. Ziegler (Australia)

10. Warming effects in the Western Antarctic Peninsula Ecosystem: the role of population dynamic models for explaining and predicting penguin trends

    developed simple conceptual models for decipher the role of climate and krill fluctuations on the population ... dynamics of these three pygoscelid penguin species inhabiting the Antarctic Peninsula region. Our results ... suggest that the relevant processes underlying the population dynamics of these penguin species at King ... George Island (Antarctic Peninsula) are intra-specific competition and the combined effects of krill ...

    Meeting Document : WG-EMM-12/18 : Автор(ы): M. Lima and S.A. Estay (Chile)

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