Resultados de la búsqueda
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Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob and Lena Banks
arranged referring to WG-SAM-14/18 as follows: 1) catch at length/age models on the assumption of no IUU ... fishing occurrence (Len_1/AgeSing_1 models), 2) catch at length/age models with estimation of IUU catch ... Abstract: I made six sensitive runs of CASAL models (LENGTH/AGE_IUU_MODEL) for stock status ... assessments of Dissostichus eleginoides in research block C in Division 58.4.4 b following the recommendation ...
Meeting Document : WG-FSA-14/23 : Autor(es): K. Taki (Japan)
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Morphometrics, maturity and movement of the Antarctic skates Amblyraja georgiana and Bathyraja eatonii in the Ross Sea
length at 50% maturity of male and female B. eatonii could not be accurately determined, but may be ... were significant differences between the two sexes: females are broader and heavier than males at ... sexes combined. It is probable that large females are larger and heavier than males of the same size ... . The regressions for these species should be used with caution. The length at 50% maturity for male A ...
Meeting Document : WG-FSA-02/42 : Autor(es): M.P. Francis and N.W. McL. Smith (New Zealand)
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The relative by-catches of taxa associated with vulnerable marine ecosystems by autolines and Spanish longlines
greater than Spanish bycatch at all depths represented in our data. Limiting the use of Autolines, which ... bycatches of VME taxa made by vessels using Autolines and Spanish longlines. The fractions of sets with ... positive bycatch, as well as the weights of bycatch when bycatches were observed, were higher for Autolines ... the large number of zero-bycatch sets, we found that both the amounts of positive bycatches and the ...
Meeting Document : WG-FSA-13/41 : Autor(es): T. Gerrodette and G.M. Watters (USA)
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Assessment of toothfish in Subarea 48.3, 2006
trends and construct a model that uses age-based observations, specifically estimates of catches at age ... SSB is now at or close to 50% of its unexploited level. Simple MPD projections suggest that catches in ... 48.3. We provide sensitivity runs that include revised maturity and catch weighted proportion at length ... requested by the Joint Assessment Group. 2. Also as requested by SAM-2006, we provide a review of CPUE ...
Meeting Document : WG-FSA-06/53 : Autor(es): D.J. Agnew, R. Hillary, M. Belchier, J. Clark and J. Pearce (United Kingdom)
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Classification of Southern Ocean krill and icefish echoes using Random Forests
echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured at ... the random forest. Time-of-day and the difference between S V at 120 kHz (S V 120) and that at 38 kHz ... Abstract: Target identification remains a challenge for acoustic surveys of marine fauna ... . Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ...
Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes
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Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016
~9.8 dB at 50ping*2m. It did not show a big difference by cell size, but the shape of Krill was changed ... operated by Norway, Korea, and Japan, etc. Major fishing area is the surroundings of South Sheltland where ... . CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources) is currently implementing a ... utilize Krill resources continuously. This study is aimed to estimate the density and the biomass of Krill ...
Meeting Document : WG-EMM-16/60 : Autor(es): Delegation of the Republic of Korea
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Hydrography and acoustic biomass estimates of Antarctic krill (Euphausia superba) near the South Shetland Islands, Antarctica, during January 2000: preliminary results
Profiler (ADCP) were deployed to understand the physical structure of the water column at 11 stations. The ... presence of ‘Winter Water’ in mid layer and Circumpolar Deep Water at greater depths. Offshore water and ... Abstract: To estimate the abundance and distribution of Antarctic krill (Euphausia superba) in ... the vicinity of South Shetland Islands (SSI), a hydroacoustic/oceanographic survey was conducted by ...
Meeting Document : WG-EMM-00/52 : Autor(es): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)
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Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
(east of longitude 180°), estimated during late spring and at the beginning of the austral summer in ... observations were done at the end of December and in January in ice-free water. During the first part of echo ... survey (in the end of December and at beginning of January) in an area of 13000 nm2 a total biomass of ... density around 39 t/nm2). The highest value of biomass density (1041 t/nm2) was found in January at ...
Meeting Document : WG-EMM-97/53 : Autor(es): Kalinowski, J., Azzali, M.
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The foraging range of Adelie penguins – implications for CEMP and interactions with the krill fishery
Abstract: This paper presents a summary of the foraging locations of the Ad6lie penguin at 7 ... not occur at these sites in normal ice years. It is suggested that an understanding of the potential ... widely spaced locations along the coast of Eastern Antarctica between 55°E near Enderby Land and 175°E in ... and return with krill. The pattern of foraging is similar between sites. The potential for overlap ...
Meeting Document : WG-EMM-96/69 : Autor(es): Rodary, D., Thomson, R., Tremont, R., Lawless, R., Gardner, H., Wienecke, B., Clarke, J.R., Kerry, K.R., Corsolini, S., Eberhard, S.
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TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA
prey) will vary between different life history stages at different times of the year in different areas ... at all. Diver observations suggest that seals may feed selectively on only parts of toothfish so that ... inconclusive. We recommend further research using stable isotope analysis of blood samples from seals not at ... the breeding colonies, and samples of muscle or other slower-turnover tissue of seals at the breeding ...
Meeting Document : WG-EMM-08/43 : Autor(es): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)