Résultats de la recherche

1. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   there must have been at least one encounter with an FPV in a year; no encounters in a year are ... ’. The encounter probability was estimated from the known encounters of FPVs with licensed vessels. The ... with IUU fishing. The mean and variance of fish catch rate was calculated for each area and each year ... highly skewed, with medians in the three years of 621, 2 852 and 550 birds respectively. 95% confidence ... 122 behaviour, which is capable of dealing with unseen IUU effort and can be used to derive ... - fi sh could potentially be caught, IUU operations moved to that area in 1996 and 1997. Since then ... develop the model presented here, and it is shown that this model can be used to esti- mate the level and ... activity increased considerably at South Georgia, with the result that after detecting a few inci- dents ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood

2. e-sc-40-a5.pdf

   ... rules that would be consistent with the current CCAMLR decision rule and its objective. The rules in ... Group noted that the term ‘fishing impact zone’ could be confused with the term ‘fishery footprint ... that Conservation Measure (CM) 51-07 will expire in November 2021 and will need to be replaced by an ... AMLR krill survey data show that estimated recruitment is highly variable, and that years with very application/pdf attached to:WG-SAM-2021

   Meeting Report : WG-SAM-2021

3. e-cc-xx-a5.pdf

   ... that Area 51 may be more productive than other areas. However, compared with other potential ... agreed that the issue be considered further intersessionally. The Committee also noted with gratitude ... exported with a Dissostichus Catch Document (DCD) (SCOI-01/23). This indicated the concern that the CDS ... it is stated that: ‘…The Commission also noted that SCOI had considered the sinking, with many application/pdf attached to:SCOI-01

   Meeting Report : SCOI-01

4. The effects of global climate variability in pup production of Antarctic fur seals

   Abstract:  Climate variability has strong effects on marine ecosystems, with repercussions that ... . Nonlinear mixed effects models indicated that positive anomalies at South Georgia explained extreme ... range in scale from those that impact individuals to those that impact the entire food web. Climate ... sea surface temperature (SST). Environmental autocorrelation at South Georgia was evident with ...

   Meeting Document : WG-EMM-06/P2 : Auteur(s): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)

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

   with movement of animals to preferred spawning depths. A general model would be that toothfish form ... high mean length at depth are May and August, and with a low mean length at depth are April and July ... . Examination of maturity data suggests that in addition to a major spawning event in late July/August, there ... spawning between the two areas. There may be two (or more) spawning periods during the winter, with the ...

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

6. Numerical model of ecosystem including Euphausia superba Dana as a key species in circumpolar region

   OGCM (Ocean General Circulation Model) (2) to develop a one dimensional ecosystem model that can be ... ) with seven compartments and coupled with a one dimensional mixed layer model for calculating the ... Abstract:  On the processes to investigate a proper model for understanding the processes that ... integrated model with the above 5 items. This year, we have developed an OGCM and a one dimensional ecosystem ...

   Meeting Document : WG-Krill-94/26 : Auteur(s): M.J. Kishi and M. Naganobu (Japan)

7. On the taxonomy of the Lepidonotothen squamifrons group (Pisces, Perciformes, Notothenioidei)

   macrophthalma, may also be identical with L squamifrons and that the L squamifrons 'group' is ... Islands to assist in clarifying their taxonomic status. Results suggest that both 'species&#039 ... Abstract:  The Lepidonotothen squamifrons group has been described to be comprised of 3 species: L ... ; represent only populations of one species. Evidence is presented that the third species of the group, L ...

   Meeting Document : WG-FSA-93/25 : Auteur(s): R. Schneppenheim and K.-H. Kock (Germany), G. Duhamel (France) and G. Janssen (Germany)

8. A preliminary model-based approach for estimating natural mortality of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region

   estimated with relatively high precision and with no bias. Further investigations will need to be carried ... mortality can be achieved using MCMC simulations. We recommend that analyses exploring the effect of the ... model-based estimate of M, including values of natural mortality that vary by age and sex, should be ... estimated to be 92 140 t (70 330–121 950 t); a higher B0 72 620 t (65 040–81 050 t) when compared to the ...

   Meeting Document : WG-SAM-2019/04 : Auteur(s): B. Moore, S. Mormede, S. Parker and A. Dunn

9. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

   definitions of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... . The results strongly suggest that the krill fishery in the South Georgia area is operating at a ... correlations with previously published interannual series of acoustic density estimates from scientific surveys ... . To refine these CPUE indices, it will be necessary to collect more detailed information from fishing ... could be used to give a catch-per-unit-effort (CPUE) index that is a good predictor of krill abundance ... the krill supply to the factory, with the result that production is constant above this point. By ... during the 2001/02 and 2002/03 seasons. Comparisons with acoustic surveys As indicated previously ... , comparisons of pre- dicted CPUE indices with acoustic densities cannot be made directly without taking into ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Auteur(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

10. e-cc-xxi-a5.pdf

    ... have complied fully with Conservation Measure 29/XIX in 2001/02, be allowed to fish during the last ... with respect to the second vessel Lena. It should be noted that several weeks before the incident ... and that any potential reflagging of Viola would be in strict accordance with CCAMLR Resolution 13 ... /6). 2.2 The Committee noted that the CDS had been fully established and was providing CCAMLR with application/pdf attached to:SCOI-02

    Meeting Report : SCOI-02

Pages