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SEASONAL ESTIMATION OF ABUNDANCE BY BOOTSTRAPPING INEXACT RESEARCH DATA (SEABIRD): A METHOD FOR ASSESSING ABUNDANCE AND UNCERTAINTY FROM HISTORICAL COUNT DATA USING ADELIE PENGUINS AS A CASE STUDY
uncertainty associated with historical counts be faithfully incorporated and preserved, and methods have been ... of that kind. The present study attempts to implement this estimator in the form of a parametric ... being presented in a specified format congruent with CCAMLR databases designed to store historical ... associated with combining diverse data collected in a variety of ways over many decades. Of particular ...
Meeting Document : WG-EMM-PSW-08/11 : Автор(ы): J.P. McKinlay and C.J. Southwell (Australia)
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KRILL FISHERY REPORT: 2008 UPDATE
preliminary estimate of the total catch of krill for the season is approximately 108343 t. This compares with ... 104586 t of krill reported in the STATLANT data for 2006/07. With the exception of Poland, all ... for krill in Area 48 in the 2007/08 season, and these vessels have taken 84110 t of krill to date. The ...
Meeting Document : WG-EMM-08/05 : Автор(ы): Secretariat
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DISTRIBUTION AND ABUNDANCE OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
000 t, about 20% has been taken from the northern grounds, 70% from the continental slope, and 10 ... . In preparing this paper we have identified some data sources which could potentially be used to ... fishing ground would also be difficult to interpret because of the movement of tagged fish. There is also ... by other research sampling. Indirect observations from cameras mounted on seals shows that Antarctic ...
Meeting Document : WG-EMM-09/40 : Автор(ы): S.M. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Update of analysis on sea-ice concentration of southern part of 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA
) and hence it should be covered by research for stock assessment in the near future. Author(s): T ... . Namba, T. Ichii and T. Okuda Title: Update of analysis on sea-ice concentration of southern part of ...
Meeting Document : WG-SAM-17/10 : Автор(ы): T. Namba, T. Ichii and T. Okuda
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The Antarctic toothfish: how common a prey for Weddell seals?
Antarctic toothfish (Dissostichus mawsoni) in McMurdo Sound, Antarctica, during 2001-2003 austral summers ... the quantity of toothfish captured lead us to suggest that this species is a significant prey item for ... Weddell seals, and that the recent development of a toothfish fishery in the Ross Sea may have broader ... common (as evidenced by more than 30 years of sustained research projects on that toothfish population ...
Meeting Document : WG-EMM-07/P4 : Автор(ы): P.J. Ponganis and T.K. Stockard (USA)
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Finfish by-catch in the krill fishery for the 2010 and 2011 seasons
, that may go undetected in larger samples, are recorded using a sorting method with a standard sub ... Abstract: The fish sampling protocol (K12 form) was developed to ensure that small/larval fish ... -sampling approach that allows the user to re-sort smaller samples and maximises potential to detect by ... was used. With more data from the upcoming season and greater observer coverage across the fishing ...
Meeting Document : WG-FSA-11/05 : Автор(ы): Secretariat
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Simulation experiments and CCAMLR yield estimates using CASAL
“true” states with data that includes bias and variance in observations, as well as the robustness of ... , however it should be noted that simulation studies often under-estimate the uncertainty that would be ... were fitted with an expected percent root mean squared error (%RMSE) of less than 20%. The inclusion of ... the expected performance of integrated models is required that investigates a range of alternative ...
Meeting Document : WG-FSA-SAM-05/9 : Автор(ы): A. Dunn (New Zealand)
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ESTIMATING THE SWEPT AREA OF DEMERSAL LONGLINES BASED ON IN-SITU VIDEO FOOTAGE
to be comparable with that of demersal trawls. We also provide evidence that benthic fauna that are ... . Footage revealed that after setting the line moved very little, despite cross currents. During hauling ... , the section of line visible to the camera swept sideways, interacting with sessile benthic organisms ... total time to retrieve the line, we estimate that up to 0.122 km2 of seafloor was swept by the line ...
Meeting Document : WG-FSA-08/58 : Автор(ы): D. Welsford and R. Kilpatrick (Australia)
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The use of morphometric parameters for the determination of sex of Adelie penguins
, Antarctica (latitude 67°36’S, longitude 62°53’E). It was found that 89 % of birds could be correctly sexed by ... the sex of the birds can be increased by avoiding those with a discriminant score close to the mean ... , cubitocarpal) with the mean discriminant score of 55.39. Males have a higher score and females a lower one. The ... sex of juvenile birds (identified by their white chins) cannot be determined by this method. The ...
Meeting Document : WG-CEMP-91/5 Rev. 1 : Автор(ы): K.R. Kerry, D.J. Agnew, J.R. Clarke and G.D. Else (Australia)
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Revised research plan for toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2012/13
2011/12 fishing season with the aims of providing the data required for assessments of the population ... ton) was smaller than that 1 928 tonnes estimated in the WG-FSA meeting in 2011 (SC-CAMLR XXX, Annext ... 4, paragraphs 5.19-21). CVs of 20 % achievable from the biomass estimates may be achieved within ... three years with an annual research catch of approximately 50 tonnes. The estimate (976 tonnes) using ...
Meeting Document : WG-FSA-12/58 Rev. 1 : Автор(ы): Delegation of Japan
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