Search results
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Summary of the toothfish fishery and tagging program in the Amundsen Sea region (SSRUs 882C–H) to 2017/18
recommend that catch limits in the ASR be calculated following the trend analysis rules developed by WG-FSA ... survival and tag detection by individual vessels) can be applied: 882H: 177 t based on a one-year Chapman ... the catch limit from 200 t. Research block 882_1: 240 t based on CPUE by seabed area and allowing a ... % change in the catch limit from 200 t. Research block 882_3: 160 t based on CPUE by seabed area and ...
Meeting Document : WG-FSA-18/36 : Author(s): S. Mormede and S. Parker
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Use of biological data to inform bioregionalisation of the Southern Ocean
spatially comprehensive species distribution layers from discontinuous biological data, by fitting complex ... species-specific layers can then be used in bioregionalisation, for instance by classifying directly on ... Regression Trees), by which we propose that CCAMLR may wish to generate species layers to inform the ... bioregionalisation of the Southern Ocean. We demonstrate the use of this method by generating 13 taxon-specific and ...
Meeting Document : WS-BSO-07/7 : Author(s): M. Pinkerton, B. Sharp and J. Leathwick (New Zealand)
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Reasons of differences between distribution and density of mackerel icefish (Champsocephalus gunnari) aggregations in the South Georgia area during summer and autumn periods in different years from the bottom trawl survey data
anticyclonic circulation formed by the Weddell waters. Confinement of the fish to the boundary of water masses ... aggregations resulted from the availability of clear-cut frontal zone caused by interaction of warm deep waters ... inhabited by icefish and migration of fish to the upper 100m layer. Very high water temperature (above 1.8 ... vertical migrations by foraging fish. All physiological processes of icefish begin to recede at such a ...
Meeting Document : WG-FSA-05/77 : Author(s): Zh.A. Frolkina (Russia)
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Fish and squid in the diet of king penguin chicks, Aptenodytes patagonicus, during winter at sub-Antarctic Crozet Islands
this was the main prey by reconstituted mass (57%). Myctophid fish (lantern-fishes) accounted for most ... of the fish diet, constituting together 32 % by mass. The three main species of myctophids eaten in ... summer by king penguins were either very rare in winter (Electrona carlsbergi) or accounted for a smaller ... proportion of the diet (Krefftichthys anderssoni = 1.5% by mass and Protomyctophum tenisoni = 4.6%). Five ...
Meeting Document : WG-EMM-97/09 : Author(s): Cherel, Y., Ridoux, V., Rodhouse, P.G.
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Results of acoustic assessment of krill biomass in Subarea 48.2 during summer 1996
represented by the measuring system EK-5001BI 500. Calibration of echo sounder EK-500 was performed by ... strength was estimated by means of TS/length relationship, recommended by WG-krill (SC-CAMLR, 1991 ... and biomass within strata speciefied exceeded no 8%. Previous data obtained by AtlantNIRO showed that ... results in underestimated acoustic biomass by 1.9 dB at s.d. = 0.6 dB. Besides, the study area selected ...
Meeting Document : WG-EMM-96/36 : Author(s): Sunkovich, V.I., Kasatkina, S.M., Abramov, V.M., Polischuk, M.I., Sushin, V.A., Shnar, V.N.
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Matlab code for calculating krill biomass in a survey area
biomass (B 0; tonnes) estimates was compiled and provided to the Secretariat for reference and use by ... others to derive biomass estimates. Over the last several years, attempts by many nations to use this ... collection of code has revealed inconsistencies and omissions in the documentation, complicating attempts by ... (B 0; tonnes) estimates was compiled and provided to the Secretariat for reference and use by others ...
Meeting Document : SG-ASAM-16/03 : Author(s): A. Cossio, J. Renfree and C. Reiss
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Re-analysis of CPUE in both species of toothfish in 48.6 area
. Here, the length of the line was used as effort unit and also high CPUE values reported by a Korean ... Vessel (Insung No 7) were further investigated by applying extreme value analysis. Antarctic and ... analysis of catch intention was implemented by using multivariate statistical approach of the catch ... composition. Standardisation of CPUE was done by using Generalised Additive Models (GAM) considering temporal ...
Meeting Document : WG-FSA-13/63 : Author(s): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)
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The use of morphometric parameters for the determination of sex of Adelie penguins
Abstract: The ability to determine the sex of Adélie penguins by discriminant analysis of ... , Antarctica (latitude 67°36’S, longitude 62°53’E). It was found that 89 % of birds could be correctly sexed by ... sex of juvenile birds (identified by their white chins) cannot be determined by this method. The ... the sex of the birds can be increased by avoiding those with a discriminant score close to the mean ...
Meeting Document : WG-CEMP-91/5 Rev. 1 : Author(s): K.R. Kerry, D.J. Agnew, J.R. Clarke and G.D. Else (Australia)
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Results of Phase I and II of the research program for toothfish fishery in Subarea 88.3 during the 2010/11–2011/12 seasons (this is a revision of WG-SAM-12/05)
Abstract: In 2011 and 2012 in Subarea 88.3 research fishing for toothfish has been conducted by ... Russia. In 2011 fishing was carried out by Russian longliner “Sparta” out and in 2012 it was longliner ... “Chio Maru 3”. Research program was performed by scientific observers from VNIRO (Moscow, Russia) and ... calculated by the accepted in SC-CCAMLR-XXX/5 p.2.40 (ii) formula. Value of toothfish`s stock by SSRUs and ...
Meeting Document : WG-FSA-12/13 : Author(s): A.F. Petrov, V.A. Tatarnikov, K.V. Shust and I.I. Gordeev (Russia)
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Biological and fishery information for skates in Division 58.5.2
slow growing. Composition of the skate bycatch by fishery and depth zone is described. Length-weight ... equations are provided relating total length and weight by species. The length at first maturity (L50) was ... of skates by species and stratum is presented from survey data. CPUE of skates by species from both ...
Meeting Document : WG-FSA-05/70 : Author(s): E.M. van Wijk and R. Williams (Australia)