Résultats de la recherche

1. Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias

   population obtained by adjusting a one-off count using availability adjustment factors will not account for ... the breeding population obtained by adjusting a one-off count using availability adjustment factors ... adjusted by some date- or stage-specific factor if the count is to form the basis of an estimate of some ... vegetation, for example, may not be available for counting by an observer passing overhead in an aircraft ... , and marine species diving underwater may not be available for counting by an observer in a passing ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Auteur(s): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery

2. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   southwest (SW) Atlantic sector is a major scale of variability, driven by sea-ice and climate effects on ... sector is a major scale of variability, driven by sea-ice and climate effects on recruitment. This ... not affected by sea-ice. This survey design misses four additional com- ponents of krill habitat. The ... ’ to acoustics and often not prop- erly sampled by nets either. Large-scale analyses of length ... ,  albeit in  krill ‐r ich parts of kril l’s  range Krill  in 0‐10 m l ayer missed by acoustic surveys ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

3. Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)

   very low productivity. Estimates of average biomass were made by comparison of standardised catch rates ... Prydz Bay, and appears to be of very low productivity. Estimates of average biomass were made by ... critical that spatial variations in catch rate are accommodated. This is generally dealt with by spa ... for each stratification as density multi- plied by area size. In the analysis presented here, a ... pre-processed by New Zealand scientists to eliminate errors in the dataset. Although only ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Auteur(s): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán

4. Assessing the power to detect systematic change in Adélie penguin foraging trip duration

   greater in the crèche stage than the guard stage. The gain obtained by increasing the number of penguins ... . Power to detect change was greater in the crèche stage than the guard stage. The gain obtained by ... included years, mating pair membership, gender, penguins and trips. Foraging trips by Adélie penguins at ... Béchervaise Island are characterised by many short trips, inter- spersed with a variable number of longer ... of data on the logarithmic scale has been recommended by the CEMP Subgroup on Statistics (SC-CAMLR ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Auteur(s): Southwell, C., J. Clarke and L.M. Emmerson

5. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   by illegal activity. Both the new and the current method suffer from the fact that the observation ... potentially better handle the evasion of detection by illegal activity. Both the new and the current method ... , by-catch and incidental mor- tality which can be attributed to illegal fi shing. Illegal fi shing is ... this paper, the only type of observation con- sidered here is that reported by a fi shery patrol ... , which occurs for a given set of observations for an area can be given by: est i i F P D= ∑ (2 ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I

6. SCOI-97

   reported to CCAMLR Prepared by the Secretariat SCOI-97/12 Illegal fishing within Australia’s EEZ around ...

   Meeting

7. KRILL FISHERY REPORT: 2011 UPDATE

   has been taken by two vessels using the continuous fishing system. The forecast total catch of krill ...

   Meeting Document : WG-EMM-11/05 : Auteur(s): Secretariat

8. RECENT TRENDS IN NUMBERS OF FOUR SPECIES OF PENGUINS AT THE PRINCE EDWARD ISLANDS

   numbers of macaroni and southern rockhopper penguins at Marion Island decreased by about 30% and 70 ...

   Meeting Document : WG-EMM-10/P1 : Auteur(s): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper

9. COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY

   Algoa Bay (Eastern Cape), their breeding localities in these regions being separated by c. 600 km. Their ...

   Meeting Document : WG-EMM-11/P8 : Auteur(s): R.J.M. Crawford, R. Altwegg, B.J. Barham, P.J. Barham, J.M. Durant, B.M. Dyer, D. Geldenhuys, A.B. Makhado, L. Pichegru, P.G. Ryan, L.G. Underhill, L. Upfold, J. Visagie, L.J. Waller and P.A. Whittington

10. 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

    abundant material overall (28%), closely followed by fishing nets (26%). Juveniles (including sub-adults ...

    Meeting Document : SC-CAMLR-XXVI/BG/17 : Auteur(s): Delegation of the United Kingdom

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