Search results
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VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES
‘stochastic gradient boosting’). Depth was the single most important environmental predictor of variation in ... moderately high richness between 400 and 1100 m. Richness was higher both in waters with high surface ... concentrations of chlorophyll a and in zones of mixing of water bodies of contrasting origins. Local variation in ... temperature was also important, with lower richness occurring in waters that were cooler than expected given ...
Meeting Document : WS-VME-09/P04 : Author(s): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
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Results of scientific observation in Antarctic krill fishery in 2010/11: II. analysis of variability of krill size and fish by-catch
) incorporated in a state-space model that separates biological process error from fishery process error and ... observation error. The parameters of the model were estimated by the Markov chain Monte Carlo (MCMC) method in ... krill length model, some parameters did not converge well in the bycatch fish model. The interaction ... is no clear difference among cruises within a vessel. The uncertainty in parameter estimation is ...
Meeting Document : WG-EMM-12/67 : Author(s): T. Okuda and M. Kiyota (Japan)
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Progress report on the Korean exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in 2016/17 season
Abstract: The research fishing was conducted in Divisions 58.4.1 and 58.4.2 from 12 January 2017 ... to 14 March 2017 in 2016/17 fishing season. One additional national observer was on board to perform ... additionally satellite archival tags were attached to 5 individuals of D. mawsoni. In Divisions 58.4.1 and ... encountered unknown fishing gears during research fishing in SSRU G and E of the Division 58.4.1 and reported ...
Meeting Document : WG-SAM-17/27 : Author(s): S.-G. Choi, J. Lee, J. Lee and D. An
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Notification of research-in-progress in an Australian tuna fishery of relevance to the conservation of Convention Area seabirds
Abstract: This purpose of this document is to inform CCAMLR of work-in-progress in the Australian ... was completed in April 2005. (b) a manipulative experiment testing the effectiveness of various ... scheduled for October and November 2005 when fleshy-footed shearwaters (the main seabird species taken in ... length (distance between weighted swivel and hook) on the sink rate of branch lines used in Australia’s ...
Meeting Document : WG-FSA-05/13 : Author(s): G. Robertson, B. Wienecke, K. Lawton and B. Baker (Australia)
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Geographical differences in the condition, reproductive development, sex ratio and length distribution in Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
April. Results of this study indicate measurable differences in a number of indices from toothfish found ... the population was more advanced in reproductive development, were in poorer condition, showed a ... consistent peak over all seasons in comparison with the southern group in which the distribution was ... multimodal. Author(s): J.M. Fenaughty (New Zealand) Title: Geographical differences in the condition ...
Meeting Document : WG-FSA-04/28 Rev. 1 : Author(s): J.M. Fenaughty (New Zealand)
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Avoidance of incidental mortality of seabirds and the implementation of Conservation Measure 169/XVII in Statistical Subarea 88.1 in the 1998/99 season
Dissostichus spp. in Sub-area 88.1. Daylight setting was allowed south of 65°S in Sub-area 88.1 under special ... provisions in Conservation Measure 169/XVII. The provisions included strictly applied line-weighting regimes ... and rigorous monitoring of line sink rates. In the trials, two autoline vessels set weighted longlines ... in Statistical Sub-area 88.1 between 30th December 1998 and 27th February 1999. Time depth recorders ...
Meeting Document : WG-FSA-99/35 : Author(s): J. Molloy and N. Smith (New Zealand)
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Optimization of the sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins
Abstract: Based on preliminary results of prey size in Adélie penguins, sampling designs intended ... for detection of interannual variations in prey mean sizes and penguin size related selectivity are ... analysed for the optimal allocation of observations at each level in nested designs. Recommended numbers ... x date interaction equal to the variance component for penguin in dates obtained from a previous ...
Meeting Document : WG-CEMP-90/09 : Author(s): E. Marschoff and B. Gonzalez (Argentina)
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Progress report on the Korean exploratory longline fishery for Dissostichus spp. in Division 58.4.1 in 2015/16
Abstract: The research fishing was conducted in Division 58.4.1 from 9 January 2016 to 21 March ... 2016 in 2015/16 fishing season. One additional national observer was on board to perform various ... . In Division 58.4.1, tagging rate and tag overlap statistics of D. mawsoni were 5.0 and 82 ... has encountered unknown vessels and fishing gears during research fishing in SSRU C and E of the ...
Meeting Document : WG-SAM-16/28 : Author(s): Delegation of the Republic of Korea
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Seabird mortality in the artisanal austral hake and Patagonian toothfish longline fisheries in southern Chile
of incidental mortality for the artisanal fleets for Austral hake and Patagonian toothfish in ... longlines that sink fast: 0.33 and 0.69-0.22 m?sec-1 in the hake and toothfish longlines, respectively ... . Accordingly, seabird by-catch was 0.030 birds/1000 hooks in the Austral hake fishery, mainly accounted by ... birds caught during the slow process of hauling. The overall by-catch rate in the Patagonian toothfish ...
Meeting Document : WG-FSA-04/54 : Author(s): C.A. Moreno, P. Rubilar, J. Arata, R. Hucke-Gaete (Chile) and G. Robertson (Australia)
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Plan of research program of the Russian Federation in Subarea 48.5 (Weddell Sea) in season 2013/14
subareas, where stock assessment should be carried out. In spite of hard ice conditions during most of the ... be found in geographical location, bathymetric profile and current system, highlight the Weddell Sea ... as one of the most promising area for exploratory fishery of Dissostichus sp. However, fishery in ... collecting data for reliable stock assessment and following estimation of precautionary limits in accordance ...
Meeting Document : WG-FSA-13/09 : Author(s): A.F. Petrov, I.I. Gordeev and K.V. Shust (Russia)