Résultats de la recherche
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A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model
implemented in each species of toothfish. Tagging data was not used in any of the toothfish models, because of ... the low number of recovered individuals and low tag size-overlap. Modelling abundance in both species ... contribution to estimate abundance in a simple biomass dynamic model for both species of toothfish in northern ... sets in which both species are present, and thus, an analysis of catch intention was implemented by ...
Meeting Document : WG-SAM-13/29 : Auteur(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)
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Educational observer on board fishing vessels in Brazil
/obligation on the usage of these measures is in force. Author(s): Delegation of Brazil Title: Educational ... Abstract: We inquired several social aspects of two Brazilian crews working in pelagic longline ... order to investigate the social and professional character of each crew member. Overall, our results ... show a low level of studies among these professionals. We suggest the implementation of a new concept ...
Meeting Document : SC-CAMLR-XXV/BG/20 : Auteur(s): Delegation of Brazil
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A bioenergetics model for estimating prey consumption by an Adélie penguin population in east Antarctica
. The model predicts prey consumption throughout the breeding season and incorporates uncertainty in ... , and a year with low breeding success. On the basis of variable breeding success and the proportion of ... krill and fish in their diet, we estimate that this population consumes 78-406 t of krill and 4-46 t of ... Abstract: We developed a bioenergetics model to estimate prey consumption by the Adelie penguin ...
Meeting Document : WG-EMM-16/P10 : Auteur(s): D. Southwell, L. Emmerson, J. Forcada and C. Southwell
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Krill catch distribution in relation to predator colonies, 1987-1991
Abstract: The distribution of krill catches in relation to predator colonies in Subareas 48.1 and ... December and March, and these are between 10 and 18% of the estimated total penguin consumption in this ... period. The pattern of fishing is very consistent in all years 1988-1991 in Subarea 48.1, but is more ... % of the estimated total penguin consumption. The largest catch taken in this critical period was 94 ...
Meeting Document : WG-KRILL-92/18 : Auteur(s): Secretariat
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Estimating toothfish biomass in Subarea 48.3 using local depletions
means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... individual vessel fishing events in these areas over this period, 40 of which appeared to be depletions ... CPUE over the four years and multiplying by the total fishable area in Subarea 48.3 we arrived at an ...
Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.
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Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3.
) in Siena, Italy, the UK reported on the by-catch of fur seals (Arctocephalus gazella) in the krill ... fur seal deaths in the fishery. WG-EMM requested that the UK provide further details of the methods ... Abstract: At the 2004 meeting of the Working Group on Ecosystem Monitoring and Management (WG-EMM ... entanglements on krill vessels fishing around South Georgia in the 2004 fishing season. The measures implemented ...
Meeting Document : WG-FSA-05/P1 : Auteur(s): Charman, C., Clark, J., Hooper, J., Agnew, D.
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Delayed laying and prolonged fasting in Adelie penguins Pygoscelis adeliae
penguins in this situation, recorded the laying dates and lengths of fasting periods Author(s): Joachim ... sites had to delay egg laying until the snow melted. Maximum length of fasting periods comprising pre ... pebbles necessary for nest building were unattainable. Consequently, we observed the behaviour of the ... Abstract: Observations of nesting Adélie Penguins (Pygoscelis adeliae) were made at Ardley Island ...
Meeting Document : WG-CEMP-94/23 : Auteur(s): Joachim Ulbricht and Detlev Zippel (Germany)
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Spatial variation in Antarctic toothfish (Dissostichus mawsoni) catch rate, mean weight, maturity stage and sex ratio across Divisions 58.4.1, 58.4.2 and 58.4.3b
management advice in these Divisions is understanding the distribution, abundance and boundaries of the ... reports on the development of generalised additive mixed models to characterise relationships between ... the structure and functioning of the stock. Author(s): P. Yates, P. Ziegler, P. Burch, D. Maschette ... environmental variables and (1) relative density, (2) mean weight, (3) proportion mature and (4) sex ratio of D ...
Meeting Document : WG-FSA-17/16 : Auteur(s): P. Yates, P. Ziegler, P. Burch, D. Maschette, D. Welsford and S. Wotherspoon
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Proposal for a mark–recapture experiment to estimate toothfish population size in Subarea 48.4
Abstract: One UK vessel fished around the South Sandwich Islands (Subarea 48.4) in in July, 2005 ... programme to assess the toothfish population. Catch rates were similar to those experienced in Subarea 48.3 ... . The UK proposes to undertake a more extensive mark-recapture experiment in Subarea 48.4 over the 2006 ... – 2007 fishing seasons. The objective of the experiment will be to assess toothfish population structure ...
Meeting Document : WG-FSA-05/57 : Auteur(s): Delegation of the United Kingdom
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Fisher training exchanges in seabird mitigation
operating in the New Zealand fishery, which had a proven record of seabird-friendly fishing techniques. The ... report documents the process and outcomes of the first exchange to occur, which was for the placement of ... a Chilean skipper, Luis Uribe- a swordfish fisher from working in the Southern Chilean artisanal ... Abstract: An initiative to provide training exchanges in seabird mitigation was trialled in 2004 ...
Meeting Document : WG-FSA-05/47 : Auteur(s): S. Waugh (New Zealand)