Résultats de la recherche
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Broadbandwidth total target strength measurements of Antarctic krill (Euphausia superba) from reverberation in a cavity
acoustically measured over a broadbandwidth (36 to 202 kHz) using a new technique [J. De Rosny and P. Roux ... omnidirectional emitter into one of three glass carboys containing groups of krill swimming in 9.3, 19.3 or 45.9 l ... . At each center frequency (fc), the coherent energy in 200-pulse ensembles identified sound scattered ... each fc was extracted from a correlation analysis of energy reverberated in the tank. Measurement ...
Meeting Document : WG-EMM-02/49 : Auteur(s): D.A. Demer and S. G. Conti (USA)
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Conserving pattern and process in the Southern Ocean: designing a Marine Protected Area for the Prince Edward Islands
zones: four IUCN Category Ia reserves (13% of EEZ); two Conservation Zones (21% of EEZ); and three ... Abstract: South Africa is currently proclaiming a Marine Protected Area (MPA) in the Exclusive ... required by the MPA are apparent in the final reserve design. The proposed MPA boundaries are expected to ... Title: Conserving pattern and process in the Southern Ocean: designing a Marine Protected Area for the ...
Meeting Document : WS-BSO-07/P1 : Auteur(s): Lombard, A.T., B. Reyers, L.Y. Schonegevel, J. Cooper, L.B. Smith-Adao, D.C. Nel, P.W. Froneman, I.J. Ansorge, M.N. Bester, C.A. Tosh, T. Strauss, T. Akkers, O. Gon, R.W. Leslie and S.L. Chown
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Spatial distribution and population structure of juvenile Antarctic toothfish (Dissostichus mawsoni) in the South Shetland Islands (Subarea 48.1)
Abstract: In the present study we provide new insights on the spatial distribution and population ... northern lower South Shetland Islands. Although they were caught in all depth strata, they were most ... between 2 and 7 years in males and between 2 and 8 years in females, respectively. Annual growth rate was ... estimated from the age-length keys, spanning from 10 to 5 cm TL. Present data have been discussed in ...
Meeting Document : WG-FSA-18/45 : Auteur(s): M. La Mesa, E. Riginella and C.D. Jones
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Hatching season and growth of Pleuragramma antarcticum larvae near the Antarctic peninsula in austral summer 1993/94
Abstract: Hatching season and larval growth of Pleuragramma antacticum in the water off Antarctic ... Peninsula were determined by the examination of growth increments in otoliths. The samples were collected by ... (54 inds. out of 77 fish larvae) in ichthyoplankton samples, and occurred mainly in cold water of the ... otolith cores was about 50 μm in diameter. The width of the growth increments was narrow near the core ...
Meeting Document : WG-EMM-96/65 : Auteur(s): Cha, S.S., Lee, T.W., Kim, S.
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Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems
average values of ca. 18 hours for low catch rates to ca. 3 hours for high catch rates. The deviance in ... ensure catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate ... potential errors in historical catch report data. As a response, the Norwegian delegation presented a list ... estimate variability in the conversion from krill holding tank volumes to krill biomass indicated that a ...
Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad
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The effects of global climate variability in pup production of Antarctic fur seals
range in scale from those that impact individuals to those that impact the entire food web. Climate ... -induced changes in the abundance of species in lower trophic levels can cascade up to apex predators by ... remain largely unexplored. We investigated the delectability, limits, and nonlinearity of changes in ... Antarctic fur seal pup production at South Georgia over a 20-year period in response to environmental ...
Meeting Document : WG-EMM-06/P2 : Auteur(s): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
Abstract: In this study, otolith microstructure analysis on 7 blue phase fingerlings and 26 brown ... phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... timings and to validate annulus formation. Although in the literature it has been reported that N. rossii ... in the South Shetland Islands hatches in spring, our daily ring back counting in otoliths from the ...
Meeting Document : WG-FSA-12/04 : Auteur(s): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Division 58.4.2
Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ... Conservation of Antarctic Marine Living Resources Commission pour la conservation de la faune et la flore ... marines de l'Antarctique Комиссия по сохранению морских живых ресурсов Антарктики Comisión para la ... Conservación de los Recursos Vivos Marinos Antárticos Fishery Report 2013: Exploratory ... fishery for Dissostichus spp. in Division 58.4.2 CONTENTS Page Introduction to the fishery ...
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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Division 58.4.3a
Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in ... de la faune et la flore marines de l'Antarctique Комиссия по сохранению морских живых ресурсов ... Антарктики Comisión para la Conservación de los Recursos Vivos Marinos Antárticos ... the Conservation of Antarctic Marine Living Resources www.ccamlr.org Commission pour la conservation ... Fishery Report 2013: Exploratory fishery for Dissostichus spp. in Division 58.4.3a ...
Document : Site Section: Publications
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Fishery Report 2014: Exploratory fishery for Dissostichus spp. in Division 58.4.3a
Description / Abstract: Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ... conservation de la faune et la flore marines de l'Antarctique Комиссия по сохранению морских живых ресурсов ... Антарктики Comisión para la Conservación de los Recursos Vivos Marinos Antárticos ... Commission for the Conservation of Antarctic Marine Living Resources www.ccamlr.org Commission pour la ... Fishery Report 2014: Exploratory fishery for Dissostichus spp. in Division 58.4.3a http ...
Document : Site Section: Publications