Résultats de la recherche
-
DISCRIMINATION OF ENVIRONMENTAL VARIABLES THAT INFLUENCE THE CATCH PER UNIT EFFORT: THE CASE OF THE ANTARCTIC KRILL FISHERY
Abstract: The use of the catch per unit effort (CPUE) as an index of abundance usually requires a ... , influencing the CPUE through a cause-effect process. Transfer function models (TFM) were constructed to ... are a valid tool for: i) discriminating environmental effects that influence the CPUE and ii ... ) describing how these effects should be included in a generalized lineal model (GLM). We analyzed the ...
Meeting Document : WG-EMM-11/P3 : Auteur(s): J.C. Quiroz, R. Wiff, M.A. Barrientos and F. Contreras
-
Further development and progress towards evaluation of an Antarctic toothfish (Dissostichus mawsoni) stock model for the Ross Sea
Abstract: This report outlines the development of a Bayesian sex and age structured population ... were investigated. The first scenario considered the Ross Sea fishery as a single homogeneous area ... provide a better representation of the some of the observations, although there was a lack of any ... adequately. In both of the spatial models, there was a lack of useful data on area splits, migration rates ...
Meeting Document : WG-FSA-SAM-05/12 : Auteur(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
-
Beach debris survey, Signy Island, South Orkney Islands 2000/2001
size categories. A total of 16 items weighing 0.74kg was collected. The number of items and the total ... mass of the waste recovered was the lowest ever recorded (a decrease of 70% and 93% since 1999/2000 ... respectively). The number of plastic packaging bands (one) was also the lowest ever recorded and follows a ... Signy Island has been showing a declining trend since 1993/94. The longevity of plastics and other ...
Meeting Document : SC-CAMLR-XX/BG/05 : Auteur(s): Delegation of the United Kingdom
-
Marine debris collected at Cape Shirreff during the Antarctic season 2000/01
/2001. All debris were collected once a month during January and February 2001 from 36 places, just when ... categories: Plastic, metal, glass, and paper. A total of 1,774 articles was studied, with a weight of 124, 5 ... , were total or partially oiled, as well as a single wing of a kelp gull Larus dominicanus, and as it ... were identified as of Korean origin (3.6%) including several printed plastic bands, corresponding to a ...
Meeting Document : SC-CAMLR-XX/BG/25 : Auteur(s): Delegation of Chile
-
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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): A. Dunn, S.J. Parker and S. Mormede (New Zealand)