Resultados de la búsqueda

1. LENGTH-BASED ASSESSMENT FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUB-AREA 48.3

   Abstract:  The current assessment method for the mackerel icefish (Champsocephalus gunnari) in sub ... identification of cohorts from the survey model, given the differential age structures observed in the population ... at Shag rocks and around South Georgia. In this paper we propose a length-based approach that removes ... distribution of the population from the survey data which, in conjunction with the bootstrapped survey biomass ...

   Meeting Document : WG-SAM-09/15 : Autor(es): R.M. Hillary, D.J. Agnew and R. Mitchell (United Kingdom)

2. USING GENERALIZED DISSIMILARITY MODELLING TO ANALYSE AND PREDICT PATTERNS OF BETA DIVERSITY IN REGIONAL BIODIVERSITY ASSESSMENT

   predicting spatial patterns of turnover in community composition (beta diversity) across large regions. The ... nonlinearity commonly encountered in large-scaled ecological data sets: (1) the curvilinear relationship ... ) the variation in the rate of compositional turnover at different positions along environmental ... assessment activities including visualization of spatial patterns in community composition, constrained ...

   Meeting Document : WS-VME-09/P03 : Autor(es): Richardson, K., Manion, G., Ferrier, S., Elith, J.

3. A methodological proposal to monitor changes in coastal fish populations by the analysis of pellets of the blue-eyed shag Phalacrocorax atriceps

   Abstract:  A proposal to monitor changes in coastal fish populations is presented in this document ... . The methodology considered is based in the analysis of regurgitated pellets of the blue-eyed shag ... changes in coastal fish populations by the analysis of pellets of the blue-eyed shag Phalacrocorax ...

   Meeting Document : WG-EMM-95/84 : Autor(es): Barrera-Oro, E., Casaux, R.

4. Entanglement of Antarctic fur seals in man-made debris at Bird Island, South Georgia

   Abstract:  The incidence of entanglement of Antarctic fur seals (Arctocephalus gazella) in Man ... incidence of entanglement during the pup-rearing period was slightly higher than in the previous year (48 ... , respectively). Polypropylene straps (44%), of the type used in packaging bands, and fishing net fragments (27 ... %) were the most common item found on seals. These proportions are similar to those reported in previous ...

   Meeting Document : SC-CAMLR-XI/BG/09 : Autor(es): Delegation of United Kingdom

5. Rockhopper penguins and other marine life threatened by driftnet fisheries in the south Atlantic ocean

   -target species in the Pacific Ocean, has extended its range to include the South Atlantic Ocean ... . Relatively little is known about the areas of operation and impacts of driftnetting in the South Atlantic as ... . This paper reviews the impact of the driftnet fishery on non-target species in the central South ... , apparently resulting in considerable mortality of rockhopper penguins (Eudyptes chrysocome) and other marine ...

   Meeting Document : CCAMLR-IX/BG/05 : Autor(es): Delegation of South Africa

6. Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery. (Component of SC-CAMLR-VI/BG/4)

   quality considerations- in particular the increasing tendency to avoid catching "green” krill. These ... factors result in Catch-per-Day and Catch-per-Haul measures being unlikely to index krill abundance ... time data may be needed to assess the density of swarms in a concentration, but may be difficult to ... record in practice, and a number of other factors may complicate any analysis. The possibility of ...

   Meeting Document : WS-KCPUE-89/03 : Autor(es): D.S. Butterworth (South Africa)

7. Distribution, abundance and acoustic properties of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

   community of top predators in the shelf waters of the Ross Sea. In spite of their abundance and important ... role in Antarctic food chains, very little is known of many ecological and biological aspects of this ... . Tangaroa in February–March 2008. Multi-frequency acoustic data (12, 38, 70 and 120 kHz) allowed ... times present close to the bottom, where they were frequently caught in demersal trawls shallower than ...

   Meeting Document : WG-FSA-10/P04 : Autor(es): R.L. O’Driscoll, G.J. Macaulay, S. Gauthier, M. Pinkerton and S. Hanchet

8. Recommendations from a cross-sector workshop on krill fishing and conservation in the Scotia Sea and Antarctic Peninsula region

   Abstract:  In June 2014, the ICED programme, the British Antarctic Survey and WWF co-hosted a two ... day workshop entitled “Understanding the objectives for krill fishing and conservation in the Scotia ... progress in the management of the krill fishery; broadening participation in WG-EMM to include other ... from a cross-sector workshop on krill fishing and conservation in the Scotia Sea and Antarctic ...

   Meeting Document : WG-EMM-14/12 : Autor(es): S. Hill, R. Cavanagh, R. Downie, C. Knowland and S. Grant (United Kingdom)

9. Collaborating to eliminate Illegal, Unreported and Unregulated fishing in the Southern Ocean

   enforcement actions taken against vessels suspected of engaging in Illegal, Unreported, and Unregulated (IUU ... ; participation in satellite enforcement initiatives; intensification of action on nationals of CCAMLR Members ... potentially involved in IUU fishing; and improvements in the effectiveness of the IUU vessel lists. Author(s ... in the Southern Ocean Microsoft Word File:  cc-xxxiv-bg-23.docx Approval:  Approved Secretariat ...

   Meeting Document : CCAMLR-XXXIV/BG/23 : Autor(es): Submitted by ASOC and COLTO

10. A review of tag-based stock assessments of the Antarctic toothfish Dissostichus mawsoni in Subarea 48.4

    Abstract:  The stock abundance of Antarctic toothfish in Subarea 48.4 is estimated using tag based ... specifically developed to reduce estimation bias in populations with low recaptures, a feature typical of the ... data available for this species in 48.4. During a review of assessment methodology two main issues have ... review of assessment data and methods in order to discuss and address the issues. Author(s):  N. Walker ...

    Meeting Document : WG-FSA-15/44 : Autor(es): N. Walker, M. Soeffker, V. Laptikhovsky and T. Earl (United Kingdom)

Páginas