Search results
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Status of the Polish FIBEX acoustic data from the West Atlantic
acoustic target strength estimates of krill (SC-CAMLR, 1991a). This analysis indicated that the acoustic ... densities of krill in the oceanic parts of the Drake Passage were low (3 g m-2); however, the results also ... Shetland Islands were areas of high density. High acoustic densities of krill (77 g m-2) were also present ... target strength estimates of krill (SC-CAMLR, 1991a). This analysis indicated that the acoustic densities ... in the West Atlantic were analysed using recent acoustic target strength estimates of krill (SC-CAMLR, 1991a ... acoustic densities of krill(77 g m-') were also present in the Bransfield Strait. These results ... Pologne dans l'ouest de l'ockan Atlantique, par les estimations de la reponse acoustique du krill (SC ... densit6 est parfois 6levi.e. Dans le dktroit de Bransfield, la densiti. de krill est egalement 6levi.e ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Author(s): Trathan, P.N., J. Kalinowski and I. Everson
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Consideration of major issues in ecosystem monitoring and management
for in the Krill Yield Model (KYM). Smaller-scale interactions centre around three main categories ... : the availability of krill, variation in vital rates of the dependent species and the overlap between commercial ... within which to investigate krill availability. Vital rates can be investigated directly and also ... and the manner in which their populations vary naturally. Large-scale interactions are catered for in the Krill ... vary naturally. Large-scale interactions are catered for in the Krill Yield Model (KYM). Smaller ... -scale interactions centre around three main categories: the availability of krill, variation in vital ... . The CCAMLR Ecosystem Monitoring Program (CEMP) provides a good framework within which to investigate krill ... interactions et la manière dont leurs populations varient à l’état naturel. Le modèle de rendement du krill ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Author(s): Everson, I
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Preliminary results of research activities of RV Evrika in the Scotia Sea in January-March 1988
became stronger, causing the krill to drift eastwards. Krill concentrations were observed in the waters ... , zooplankton and krill (biological parameters) is now under way. File: 11-Maklygin-et-al.pdf ... of the Antarctic Circumpolar Current and Second Frontal Zone became stronger, causing the krill to drift eastwards ... . Krill concentrations were observed in the waters to the southeast of South Georgia where relatively ... Current and Second Frontal Zone became stronger, causing the krill to drift eastwards. Krill ... was registered. The analysis of data on phytoplankton, zooplankton and krill (biological parameters) is now ... , provoquant la derive du krill vers I'est. Des concentrations de krill furent observees au sud-est de la ... . L'analyse des donnees sur le phytoplancton, le zooplancton et le krill (parametres biologiques) est ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 215-229 : Author(s): Maklygin, L.I., A.S. Fedorov, V.N. Shnar, Yu.A. Shulyakovsky, I.V. Krasovsky, Yu.D. Shuvaev and A.V. Kromsky
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Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3
in years of poor krill availability. Thus natural ortality of C. gunnari may, in some years, increase ... by a large factor (assumed here to be 4), declining to normal levels again when krill return. This paper ... outlines a scheme which would use information from studies on krill and predators undertaken as part ... of coming periods of krill scarcity as early warnings of increased natural mortality of C. gunnari. Full ... of poor krill availability. Thus natural mortality of C. gunnari may, in some years, increase by a large ... factor (assumed here to be 4), declining to normal levels again when krill return. This paper outlines ... a scheme which would use information from studies on krill and predators undertaken as part of the CCAMLR ... of coming periods of krill scarcity as early warnings of increased natural mortality of C. gunnari. Full ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Author(s): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes
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CCAMLR ecosystem monitoring and management: future work
of a single species (Antarctic krill, Euphausia superba), it takes account of the needs of predators ... of fishing on krill predators. CCAMLR needs to adopt a management procedure which has a good chance ... , and the types of procedures already proposed for management of the krill fishery. It highlights the need ... in advance of the expansion of the krill fishery. Most importantly, operational objectives for dependent ... this approach was based on the management of a single species (Antarctic krill, Euphausia superba), it takes ... (CEMP) was set up to detect the effects of fi shing on krill predators. CCAMLR needs to adopt ... of the krill fi shery. It highlights the need to focus future work in these areas, including the need ... to evaluate candidate management procedures in advance of the expansion of the krill fi shery. Most ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Author(s): Constable, A.J
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Indices of prey availability near the Seal Island CEMP site: 1990 to 1996
indices of krill abundance derived from net samples. Indices of persistence over time reflect the relative ... biomass of juvenile krill near Seal Island during the first survey of each year as compared to the biomass ... that these indices may be useful in modelling krill predator breeding success as a function of prey availability ... indices of krill abundance derived from net samples. Indices of persistence over time reflect the relative ... 25 and l00 m depth. Indices of average prey density agree with demographic indices of krill ... of juvenile krill near Seal Island during the first survey of each year as compared to the biomass of post ... be useful in modelling krill predator breeding success as a function of prey availability. Resume Calcul ... moyenne des proies concordent avec les indices demographiques d'abondance de krill derives des ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Author(s): Hewitt, R.P., G. Watters and D.A. Demer
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Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
instrumentation are presented and discussed. To illustrate this concept a description of a Norwegian krill fishing ... . To illustrate this concept a description of a Norwegian krill fishing vessel now under construction is presented ... reduction (Flores et al., 2012a; Flores et al., 2012b; Melbourne-Thomas et al., 2013). Krill plays a key ... and discussed. To illustrate this concept a description of a Norwegian krill fishing vessel now under ... of krill has varied dramatically over its 30- to 40-year history. The present annual catch ... to the geographical overlap between feeding areas of land-based krill predators and the krill fish- ery, which both ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Author(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins
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Status of the FIBEX acoustic data from the West Atlantic
the consistency of krill abundance estimates derived from different survey vessels. There is a good level ... the consistency of krill abundance estimates derived from different survey vessels. There is a good level ... in the West Atlantic sector have been re-examined to check the consistency of krill abundance estimates ... estimations de l'abondance du krill derivees de campagnes d'evaluation de divers navires. Les resultats de ... . El autor no puede explicar esta diferencia. Keywords: E. superba, krill, biomass, density, West ... krill in Statistical Area 48 (Conservation Measure 32/X). This limit was based on calculations ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Author(s): Trathan, P.N. and I. Everson
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Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
Georgia, which breed in summer and feed extensively on krill, have shown major fluctuations in some or all ... ; circumstantial evidence relating this to reduced availability of krill is discussed. The fluctuations ... in reproductive performance of the krill-eating, summer-breeding penguins at Signy Island are not synchronised ... at South Georgia, which breed in summer and feed extensively on krill, have shown major fluctuations ... but significantly. The other species at South Georgia, which breed in summer and feed extensively on krill, have ... performance by almost all species; circumstantial evidence relating this to reduced availability of krill ... is discussed. The fluctuations in reproductive performance of the krill-eating, summer-breeding penguins ... Georgie du Sud, qui se reproduisent en ete et se nourrissent en grande partie de krill, sont apparues ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Author(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
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Composition and characteristics of ichthyofauna in pelagic waters of South Georgia (Subarea 48.3)
distribution of krill and juvenile Champsocephalus gunnari were studied. The pelagic component ... by the sampling trawl in the water column was found to be krill. Aggregations of juvenile C. gunnari were observed ... only outside dense concentrations of Antarctic krill. File: 08frolkina-etal.pdf ... and length composition of fish, as well as the comparative distribution of krill and juvenile Champsocephalus ... as the comparative distribution of krill and juvenile Champsocephalus gunnari were studied. The pelagic component ... and adult fish taken by the sampling trawl in the water column was found to be krill. Aggregations ... of juvenile C. gunnari were observed only outside dense concentrations of Antarctic krill. Resume ... longueurs des poissons, ainsi que sur une comparaison de la distribution du krill et des juveniles de ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 125–164 : Author(s): Frolkina, G.A., M.P. Konstantinova and I.A Trunov