Résultats de la recherche
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Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
Paper Title: Sensitivity investigation of the SDWBA Antarctic krill target strength model to ... fatness, material contrast and orientation Abstract / Description: The distorted-wave Born approximation ... model is recognised as state-of-the-art in predicting acoustic target strength (TS) from fluid-like ... marine organisms. A stochastic version, the so-called SDWBA model, is endorsed by CCAMLR to predict the ... rigorously if the scattering as a function of size and frequency for an individual (i.e. target strength ... modelled (Foote, 1991). In the case of zooplankton, due to the complexity of the scatter- ing processes ... , the acoustical estimates rely on the best aspects of both approaches. In recent decades, large ... et al., 2002; Demer and Conti, 2003). The scattering from an object is given by its form, size and ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Auteur(s): Calise, L. and G. Skaret
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Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean
Paper Title: Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern ... Indian Ocean Abstract / Description: This paper provides an assessment of the distribution and abundance ... of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M. carinatus ... DISTRIBUTION AND ABUNDANCE OF MACROURUS CARINATUS ON BANZARE BANK IN THE SOUTHERN INDIAN OCEAN E.M. van Wijk ... 7050 Tasmania, Australia Abstract This paper provides an assessment of the distribution and ... abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Auteur(s): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
Paper Title: Observations on haul-out patterns and trends in the breeding populations of southern ... de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... were taken into consideration: haul-out pattern and the female population trend. In both places, the ... intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ... population growth rates were based on the exponential function: Nt = No e rt as suggested by Caughley (1977 ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES (PATAGONIA ... (patagonia) and 25 de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two ... main objectives were taken into consideration : haul-out pattern and the female population trend. In ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Auteur(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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Quantifying movement behaviour of vessels in the Antarctic krill fishery
Paper Title: Quantifying movement behaviour of vessels in the Antarctic krill fishery Abstract ... / Description: Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a ... /haul, and the travel distance decreased as the catch level increased; this pattern was most obvious for ... processing rate may be vessel specific, however, below a critical point for which the catch is no longer ... Quantifying movement behaviour of vessels in the antarctic krill fishery S. Kawaguchi and S.G. Candy ... Australian Antarctic Division Department of the Environment, Water, Heritage and the Arts Channel Highway ... -scale haul-by-haul krill data were used to characterise the behaviour of the krill fishery. Analysis of ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Paper Title: Analysis of variability of krill size and fish by-catch in the Japanese krill ... fishery based on scientific observer data Abstract / Description: To estimate the optimal relative sample ... size of scientific observer data collected on Antarctic krill commercial fishing vessels, the ... . Observer datasets from the Japanese krill fishery from 1995 to 2008 were analysed using a hierarchical ... subareas, but there is no obvious regional bias (Figures 4a to 4c). The divergence of krill length at ... effect (Figures 6a to 6e). The estimated number of by-catch fish is very small. There is no obvious ... variance shows no clear trend among sampling levels (Figure 6f). 95% CI of the estimated vari- ance ... In the Antarctic, there is much concern about the impact of climate change on biodiversity, species ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
Paper Title: The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical ... 1977 the YugNIRO Research Institute (Kerch, USSR) has carried out biological and ecological monitoring ... of krill resources in the central part of the Indian Ocean sector of the Antarctic (CCAMLR ... Statistical Divisions 58.4.2 and 58.4.3). Results of surveys conducted from 1988 to 1990 are discussed in the ... density distribution. 3. DISCUSSION OF THE RESULTS In 1988 no macro-scale survey was conducted in the ... WG-KRILL-90/17 THE STATUS OF KRILL (EUPHAUSIA SUPERBA ... ACOUSTIC SURVEYS V.A. Bibik and V.N.Yakovlev* Abstract Since 1977 the YugNIRO Research Institute ... (Kerch, USSR) has carried out biological and ecological monitoring of krill resources in the central ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Auteur(s): Bibik, V.A. and V.N. Yakovlev
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
Paper Title: Diet study of Antarctic toothfish caught in the east Antarctic based on stomach ... content, fatty acid and stable isotope analyses Abstract / Description: To identify the major prey items ... for Antarctic toothfish (Dissostichus mawsoni) in the small-scale research unit (SSRU) 5841C in the ... between them. δ 15 N values of Antarctic toothfish were higher than for the other species collected ... (bonded carbowax, 30 m × 0.25 mm internal diameter and 0.25 μm film thickness) was used to separate the ... juveniles and adults. In the present study, no significant differences in toothfish stom- ach contents were ... of Insung No. 3 for excellent cooperation during the survey and Insung Ltd. for supporting the ... Science, Vol. 22 (2015): 29–44 29 Diet study of Antarctic toothfish caught in the east Antarctic based ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Auteur(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area
) (Channichthyidae) in the South Georgia area Abstract / Description: The otolith microstructure of juvenile ... a trawl survey of juveniles in February–March 2002 on the South Georgia shelf. Juvenile fish ... comprised two year classes arising from spawning in the 1999/2000 and 2000/01 split-years. The mean width of ... daily otolith growth increments decreased from 6 μm during the first 100 days (total length (TL) 4.5 cm ... days. The length range of fi sh varied widely due to the protracted spawning period. No annual marks ... ) (CHANNICHTHYIDAE) IN THE SOUTH GEORGIA AREA L.V. Shcherbich AtlantNIRO 5 Dmitry Donskoy Street Kaliningrad ... 236000, Russia Email – atlant@baltnet.ru Abstract The otolith microstructure of juvenile mackerel icefi ... survey of juveniles in February–March 2002 on the South Georgia shelf. Juvenile fi sh comprised two year ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Auteur(s): Shcherbich, L.V
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Book review: Fish and Fish Resources of the Antarctic
Paper Title: Book review: Fish and Fish Resources of the Antarctic Abstract / Description: This ... Russian-speaking readership. The book represents the first complete summary, prepared by a Russian author ... fish species. Moreover its value is enhanced by the author having participated in many fisheries ... research expeditions in Antarctica. The introduction notes that until the 1960s Antarctic waters were still ... FISH AND FISH RESOURCES OF THE ANTARCTIC K.V. Shust VNIRO, 17a V. Krasnoselskaya Moscow 107140 ... and Oceanography (VNIRO), Moscow Shust, K.V. 1998. Fislzes nnd Fish Resoz~rces of the A~ztnrctic ... I Brief essay of the Antarctic ichthyofauna Chapter I1 Fish distribution in Antarctic waters 1 ... . Zoogeographical zonation 2. Zonation by fish productivity Chapter I11 Ichthyogeographical cornplex of the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 165–168 : Auteur(s): Shust, K.V
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
Paper Title: Quantifying vessel performance in the CCAMLR tagging program: spatially and ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... . In particular, tag-detection rates are directly linked to stock size estimated from the tag data in ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... yields (Mormede et al., 2011a, 2011b; Mormede, 2011). In those analyses, the assumed values of ... mortality of tagged fish and the subse- quent detection rate of recaptured tagged fish are important input ... parameters. For example, under- estimating the tag-detection rate of the fleet will result in an ... overestimate of the stock biomass. The assessment model assumes that all vessels have equal tag-detection ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Auteur(s): Mormede, S. and A. Dunn