Resultados de la búsqueda

1. e-sc-xxvii-a4.pdf

   ... abundance. 2.18 Secondly, Dr T. Ichii (Japan) commented that top-down control may be unrealistically ... ecosystem effects of fisheries that target finfish. With these changes, the agenda was adopted (Appendix B ... 48, with advice on a Stage 1 subdivision of the precautionary krill catch limit among SSMUs1 to be ... with a review of the development of progress on this topic. The Working Group recalled that, in the application/pdf attached to:WG-EMM-08

   Meeting Report : WG-EMM-08

2. Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices

   identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... be more accessible to whales that are initially distributed on peri-insular shelves. The CPUE was ... with significant losses for fisheries and potential impacts on wild populations of depredating species ... orca) interacting with Patagonian toothfish (Dissostichus eleginoides) longliners off the Crozet ...

   Meeting Document : WG-FSA-14/P03 : Autor(es): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet

3. Scientific Abstracts 2003

   ’ with details of the publisher, if known; (iii) scientific papers not intended for publication, which ... submitted. Each abstract is preceded with a unique CCAMLR document number, e.g. SC-CAMLR-XXII/BG/11 ... and Management). Unpublished papers must not be cited without written permission of the author(s ... , a 63% reduction compared with last year. The 2001/02 season was characterised by a dramatic ... %. Classifying the waste by source revealed that most had originated from ships or fishing vessels, with four ... , with the continued increase in items found which began last season, clearly shows that the longevity ... , comparisons with the proportion of juvenile krill in simultaneous net samples suggest that the changes in ...

   Document : Site Section: Publications

4. Preliminary analysis of seabird by-catch in the South Georgia icefish fishery

   suggest that there may be a year effect. We were unable, with the limited data available, to separate ... trawl fishery for icefish (Champsocephalus gunnari) in Subarea 48.3. From December 2000 – February 2001 ... 92 birds were caught, principally black-browed albatross and white-chinned petrel, with 93% of the ... birds being caught in February. GAM/GLM analysis suggested that month and vessel were significant ...

   Meeting Document : WG-FSA-01/30 : Autor(es): D.J. Agnew, N. Ansell and J.P. Croxall (United Kingdom)

5. Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples

   units are selected with a probability that is a function of the response. In sampling to obtain fish to ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ... parameter estimation has been studied for linear and generalized linear, and linear mixed models but since ...

   Meeting Document : WG-FSA-SAM-05/13 : Autor(es): S.G. Candy (Australia)

6. Possible effects of different levels of krill fishing on predators – some initial modelling attempts

   suggested by the Joint Meeting of CCAMLR's Working Group on Krill (WG-Krill) and Working Group for the ... fluctuations together with preliminary information on adult survival and breeding success patterns for certain ... krill predator species. A 'one-way' interaction model is developed, in which krill abundance ... that variability in the annual recruitment of krill results in predator populations being less ... equation (1). Note that T is taken to be the same for each female predator in the population. For seals ... predators. The underlying concepts may be explained by re fe rence t o F igure 1, w h i c h s h o w s ... . (It must be stressed that the estimates given in CCAMLR (1993) are preliminary, and do not ... to natural mortality. In setting an upper bound for S?, account must be taken of the fact that ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Autor(es): Butterworth, D.S. and R.B. Thomson

7. Classification of Southern Ocean krill and icefish echoes using Random Forests

   are similar to those for many co-occurring fish species that do not possess swim bladders. At South ... pelagic aggregations, which can be difficult to distinguish acoustically from large krill layers. Mackerel ... icefish are currently surveyed using bottom-trawls, but the resultant estimates of abundance may be biased ... during surveys. The final random forest classified krill, icefish, and mixed aggregations of weak ...

   Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes

8. Using ecosystem monitoring data to detect impacts

   using monitoring data with no control sites. These methods assess either (i) the expected probability of ... indication from the onset. Furthermore, simulation of all methods suggests that the total probability of ... error (false positives and false negatives combined) is lowest with fixed reference point methods. The ... probabilities of Type I and Type II error can be evaluated analytically for these methods, which facilitates ... could be integrated into the manage- ment of krill fisheries (Constable, 2001, 2002), for example by ... have assumed that such objec- tives would be defined in terms of population size reference points ... of detrimental delays in the management response associated with methods that take a long time to ... once in t years can be calculated using the binomial density function: P(at) = t.p.(1 – p)t (1 ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Autor(es): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda

9. A synoptic review of energetic requirements of southern ocean krill predators

   requirements of krill predators that may be in the most direct competition with the krill fishery. These krill ... fur (Arctocephalus gazella) seals. Basal, active, and. reproductive energy ' requirements are ... compiled for each species. Estimates' of the amount of krill needed. to sustain individuals and/or ...

   Meeting Document : WG-EMM-96/19 : Autor(es): Stansfield, A.M.

10. e-sc-xxix-a6.pdf

    ... questions that are to be addressed with the data that are collected. 2.47 The Working Group recalled that ... (Annex 5, paragraph 5.2) that with appropriate parameterisation the revised protocol could be applied to ... considering the proposal, WG-EMM suggested that the research be conducted using similar standards (e.g. a ... the start of fishing operations will ensure that conduct of the research effort is less likely to be application/pdf attached to:WG-EMM-10

    Meeting Report : WG-EMM-10

Páginas