Результаты поиска
-
Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
Abstract: A large body of data and techniques are available for re-assessing the biological ... parameters and recruitment of Patagonian toothfish, Dissostichus eleginoides, in the Heard Island region. A ... a more accurate reassessment of the recruitment time series, which was likely to have been over ... , the overall analysis shows a promising way forward in understanding the dynamics of D. eleginoides in ...
Meeting Document : WG-FSA-01/73 : Автор(ы): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)
-
OPERATIONAL DIFFICULTIES IN IMPLEMENTING THE CCAMLR TAGGING PROTOCOL IN DIVISION 58.4.1 IN 2007/08
a high mortality rate of fish on these lines; only fish with a high chance of survival were tagged ... closed on 30 January 2008). • The vessel caught a total of 9.757 t of Dissostichus mawsoni in Division ... fish in Division 58.4.1 at the rate required by CCAMLR. As a result, the vessel made every effort to ... tagged fish at a rate of 4.9 fish/tonne; • in Division 58.4.3b the vessel tagged fish at a rate of 4.6 ...
Meeting Document : WG-FSA-08/16 : Автор(ы): A.T. Lozano and O. Pin (Uruguay)
-
UPDATED PRELIMINARY RESULTS OF AN ECOLOGICAL RISK ASSESSMENT FOR SEABIRDS AND MARINE MAMMALS WITH RISK OF FISHERIES INTERACTIONS
Abstract: We examined a methodology for assessing potential risk of interactions between ... fisheries and species of special interest (seabirds and marine mammals) by applying a Productivity ... -Susceptibility Analysis to a data set of species distribution, biological information and fishing effort. This ... of species interactions is clustered with greatest likelihood in a few species, where there is ...
Meeting Document : WG-FSA-08/51 : Автор(ы): S. Waugh, D. Filippi, N. Walker (New Zealand) and D.S. Kirby
-
Potentially commercial invertebrates on Ob Bank: Moroteuthis ingens (Oegopsida) and Paralomis aculeata (Anomura) (Division 58.4.4)
Abstract: The cephalopods of the Antarctic are supposed to have a very high biomass level However ... that target searching and fishing for Moroteuthis ingens with a midwater trawl over the seamaunts in ... countries of the CCAMLR, especially in view of the development of experimental fishing by a U.S. vessel on ... Antarctic are but insufficiently known. The Anomura faune on Ob Bank is represented by a single species ...
Meeting Document : WG-FSA-96/15 : Автор(ы): Pshenichnov, L.K.
-
Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996
D. eleginoides, the estimation of the finfish by-catch, the estimation of a conversion factor of ... females with males becoming mature at a much smaller length. Black-browed albatrosses and white-chinned ... % of the longlines were set during daylight hours. Consequently, black-browed albatrosses made up a ... considerable portion of the seabird by-catch. A by-catch of 159 dead seabirds was reported by the scientific ...
Meeting Document : WG-FSA-96/22 : Автор(ы): Selling, J., Kock, K.-H.
-
Hydroacoustic surveys of the distribution and abundance of krill: Prydz Bay region – FIBEX, ADBEX II and SIBEX II
-84 and 1984-85. The surveys included a total of 25 transects and covered a distance of 22 500 km over ... program. The results of the surveys and a discussion of the theory and methods employed including sources ... abundance (biomass) of krill in the Prydz Bay region as a whole and the weight density of krill along each ... cruise track is presented in graphical form. These data demonstrate a patchy density distribution with ...
Meeting Document : SC-CAMLR-VII/BG/40 : Автор(ы): Delegation of Australia
-
Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
vulnerable marine ecosystems (VMEs). We describe a spatially explicit production model that can be used to ... investigate a range of simple scenarios for simulating the effect and management of benthic impacts from ... longline fishing effort. Simulations were carried out under a range of productivity assumptions, impact ... simulated considered a range of areal closure radii and bycatch trigger thresholds. We conclude that ...
Meeting Document : WG-SAM-10/19 : Автор(ы): A. Dunn, S.J. Parker and S. Mormede (New Zealand)
-
The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012
. A codend liner, usually in place for the entire survey, was used only in the icefish strata, Gunnari ... Ridge, Plateau Southeast and Plateau West, and in a repeat of the hauls in Ground B. Catches in this ... those of 2011 and about one and a half times higher than the long-term average. Champsocephalus gunnari ... Lepidonotothen squamifrons was four times higher than the average. A slightly higher than average weight of ...
Meeting Document : WG-FSA-12/25 : Автор(ы): G.B. Nowara and T. Lamb (Australia)
-
An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
Abstract: A calibrated 120 kHz single-beam echo-sounder was integrated into an ocean glider and ... the distribution of Antarctic krill (Euphausia superba). During the glider missions, a research vessel ... undertook acoustic transects using a calibrated, hull-mounted, multi-frequency echo-sounder. Net hauls were ... a thresholded schools analysis technique (SHAPES), and acoustic data were converted to krill density ...
Meeting Document : WG-EMM-14/P02 : Автор(ы): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
-
Revised stock assessment of the Patagonian toothfish, Dissostichus eleginoides, in research block C of Division 58.4.4 (Ob & Lena Banks) using CASAL
, Shinsei maru No. 3, has conducted research fishing in accordance with a research plan submitted under CM ... order to participate in the tagging program and achieve a robust stock assessment. A preliminary ... assessment of stock status of D. eleginoides in SSRU C was made by Japan using a CASAL catch-at-length model ... posterior trace. The results seem to be not yet reliable and model not yet robust to use it as a management ...
Meeting Document : WG-FSA-14/06 : Автор(ы): A. Rélot-Stirnemann (France)
Страницы
- « первая
- ‹ предыдущая
- …
- 416
- 417
- 418
- 419
- 420
- 421
- 422
- 423
- 424
- …
- следующая ›
- последняя »