Résultats de la recherche
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Dissostichus eleginoides Géorgie du Sud (sous-zone 48.3)
1999/2000 2000/01 2001/02 2002/03 2003/04 Weighted Frequency (proportion of the catch) Le ng th ...
Document : Site Section: Publications
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
to 2013), accounting for spatial variations of depredation levels. In the first method, fishing data ... second method used the differences in the proportion of grenadiers (Macrourus spp.) between non ... conservation issues. However, estimating the amount of resource depredated can be especially challenging when ... depredation occurs on fish in the marine environment. This is the case for killer whales (Orcinus orca) and ... standard errors of the mean loss of CPUE in the presence of odontocetes were multiplied by the total ... 679 ± 74 tonnes were depredated. The second method used the differences in the proportion of ... consider- ably harder to estimate in the marine environment where the initial state of the depredated ... (Ramos- Cartelle and Mejuto, 2008). In the context of declining world fisheries (Pauly et al., 2005 ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Auteur(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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f-cc-xxv-a4.pdf
... des mesures de conservation. En conséquence, certains Membres proposent la mise au point d'un format ... n'a été présentée. Le Comité décide de conserver cette question à son ordre du jour et de la renvoyer
application/pdf attached to:SCAF-06
Meeting Report : SCAF-06
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Rapport de pêcherie 2015 : Pêcherie exploratoire Dissostichus spp. – division 58.4.1
. Cette pêcherie est approuvée par la Commission depuis 1999 (mesure de conservation (MC) 166/XVII) et des navires ... 2009 – navire In Sung No. 22, 60 tonnes de D. mawsoni 2010 – navire In Sung No. 2, 108 tonnes ... de D. mawsoni 2011 – navire In Sung No. 7, 101 tonnes de D. mawsoni. * Non estimées. 3 Pêche ... des mesures de conservation pertinentes, ne dépassera pas les limites ci-dessous : • raies ... Description / Abstract: Fishery Report 2015: Exploratory fishery for Dissostichus spp. in ...
Document : Site Section: Publications
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Investigations of required sampling regimes for environmental parameters
/ Description: The sensitivity of different sampling regimes in identifying inter-annual changes in ... monthly mean temperature over two years with a significance α of 0.05 and a power P of 0.8. Sampling wind ... monthly mean log-transformed wind speed α of 0.05 and P of 0.9. File: 35-Agnew.pdf ... Paper Title: Investigations of required sampling regimes for environmental parameters Abstract ... errors are especially important in studies affecting conservation issues, where the penalty of not ... day) would be sufficient to identify changes of 10% in log mean wind speed. The analysis above does ... necessary to distinguish between changes in the monitored system induced by harvesting of particular ... in particular the presence of cyclic phenomena. Subsequently, sensitivity analyses were performed on ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Auteur(s): Agnew, D.J.
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Line weights of constant mass (and sink rates) for Spanish-rig Patagonian toothfish longline vessels
collections of rocks enclosed in netting bags. The netting bags abrade on the seabed, rocks are lost and ... chartered Spanish-rig longline vessel to determine the statistical relationship in sink rates of longlines ... method (a modified version of the former method to avoid fish loss by toothed whales) were examined in ... requirements of the conservation measure. Both the traditional Spanish method and the newly-developed Chilean ...
Meeting Document : WG-FSA-07/15 : Auteur(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)
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Progress towards a representative network of Southern Ocean protected areas
for the Conservation of Marine Living Resources (CCAMLR) have succeeded in adopting multiple MPAs in ... international waters has proven to be challenging in most of the world, national governments and the Commission ... adoption of marine protected areas (MPAs) in national and international waters. While establishing MPAs in ... the Southern Ocean. But are these MPAs representative of Southern Ocean biodiversity and ecosystems ...
Meeting Document : WS-SM-18/12 Rev. 1 : Auteur(s): C. Brooks, S. Chown, L. Douglass and B. Raymond
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Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences
Wandering Albatross Diomedea exulans. The number of birds breeding in this population has fluctuated over ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ... anthropogenic effects. The proportion of first-time breeders in the population was positively correlated with ...
Meeting Document : WG-FSA-02/16 : Auteur(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)
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Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels
with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... the option of substituting steel weights for rock weights while remaining in compliance with the sink ... rates associated with the line-weighting provisions of Conservation Measure 25-02. Both the Spanish ... relationship between the sink rates of longlines equipped with bags of rocks (4, 6 and 8 kg) and those with ... . Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian ... collections of rocks enclosed in netting bags. During fishing operations the netting bags abrade on the ... modified version of the former method to avoid fish loss by toothed whales) were tested in the experiment ... exceeded those of the Spanish system, ranging from 0.68 m s–1 (4 kg rocks) to 1.31 m s–1 (8 kg steel) in ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Auteur(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
accounting for spatial variations of depredation levels. In the first method, we used fishing data from 6 525 ... combination of socio-economical, ecological and conservation issues. However, estimating the amount of ... depredated resource can be especially challenging when depredation occurs on fish in the marine environment ... longline sets to calculate the difference between Catch Per Unit Effort (CPUE) of non-depredated and ...
Meeting Document : WG-FSA-14/10 : Auteur(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)