Search results
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The Kerguelen database
. At the end of the split-year 1985/86 25445, trawlings have been registered in a database. The LFD (Length ... . The frequency of the trawlers in the area (Figure 1) illustrates the fishing effort during the year. During ... are shown. During the first period, the main fishing effort occurs in the Southern, South-Eastern part ... . Conservation measures established for this species have been in force for several years. In recent years ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Author(s): Duhamel, G.
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Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
scale readings gave a result of one year more. This could arise from the difficulty in differentiating ... in 19 Potter Cove specimens. In some cases scale readings gave a result of one year more. This could ... compared in 19 Potter Cove specimens. In some cases scale readings gave a result of one year more ... Hoffmann (1982) worked with first pelvic fin ray. Later on, Clasing et al. (1985), using otoliths, gave ... indicated one extra year. This finding is discussed below. Table 2 shows the observed age-length ... for N. gibberifrons from both localities. Potter Cove and Low I. fishes ranged from 4 to 10 years and from 5 to 13 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Author(s): Barrera-Oro, E.
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Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
of realisations of a Gaussian dis- tribution. For the uniformly bent cylinder param- eterisation, a numerical ... length, dis- crete frequency and fatness factor. The package was run for five krill AT lengths ... di an s sq rt( 2) /2 = 0 .7 07 1 4 op er at io na l In ci de nc ... o f or ie nt at io n co m m on ly in di ca te d as . 103 Sensitivity of the SDWBA ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Author(s): Calise, L. and G. Skaret
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Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
0 APYI'l1X Bl1~aX naCTOHOI'l1X, Ha6nlO~aB[[/l1XCH BO BpeMH npOBe~eHl1H CbeMKl1. B KaqeCTBe OnTI1Man bHblX ... at Bird Island and South Georgia increased to a population estimated in the early 1980's at just under ... over the past 80 years, with the first post-exploitation record of successful pup production being ... sites in years when data on the number of pups are not available, the total number of individuals ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 427-440 : Author(s): Bengtson, J.L., L.M. Ferm, T.J. Härkönen, E.G. Schaner and B.S. Stewart
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
determination in Antarctic fish. In: Di Prisco, G., B. Maresca and B. Tota (Eds). Biology of A n tarctic Fish ... c t r u r b r s a T e n n M M nnx Di,ssostich~,s elegirzoicler 1.13 p a i i o ~ a K)rn~or"i r e o p r m i . Ta6n ... . I (a): n p ~ ~ e p n o A c v e T a ~ 0 3 p a c ~ a no n o n e p e Y H o M y cpe3y O T o n M T a Di,~sostichu.s elegiizoides, ~ c n o n b s y n KPHTePAM XYPO M 03y@-Koc~a (1980 ... whose growth is concentrated in the early life history (Beamish and McFarlane, 1987; White, 1991 ... with age. Patagonian toothfish (Dissostichus eleginoides) is considered to be a long-lived species ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
of l species in taxon k in SSMU j, and Di,j is the total annual krill consumption of species i in SSMU ... spatial dis- tributions, so the total adult size may not always scale linearly with the breeding ... breeding adult per year. Derived krill demand estimates are for the adult portion of the relevant ... velocity fi eld was calculated over a 19-year run of this model (1985 to 2003). Prior to use ... global ocean circulation model. This parameter set, like most others, is associated with considerable ... , with perciform fish taking as much krill as whales, penguins and fur seals combined and myctophid fish ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987
as their interactions with the environment and their trophic links with plankton and benthos. In the first years (1975 ... some indication on the growth performance in late spring/early summer. Gonads of sexually mature fish ... differed significantly from that in previous seasons which argues for an exchange with C. gunnari from ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Author(s): Kock, K.-H.
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
cohort being calculated by numerical integration over a one-year period. The model is initialised ... is projected through one year by numerical integration of the basic population differential equations. Catch ... and spawning stock is calculated for each age class during the projection. At the completion of the one-year ... age class over one year. The number in each age class satisfies the differential equation: dN ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... from the model are compared with existing analyses from the krill yield model. The model can include a ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare
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A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
is adequate (Gull and Skilling, 1991). To use the above formula, a sensible prior dis- tribution of images ... experiment is repeated many times. The aim is to quantify the preferences for different possible dis ... to discriminate between prior images, much as the likelihood dis- criminates between posterior images (Gull ... reconstructions created in order to assign values to these parameters. In fact, the dis- tribution of evidence ... tonnes, with a standard deviation of 10 million tonnes. The MaxEnt method provides new insights into the ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Author(s): Heywood, B.G., A.S. Brierley and S.F. Gull
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Myctophids in the diet of Antarctic predators
. Early studies on food and feeding ecology of Antarctic top predators were summarised in several ... at Marion and Macquarie Islands were carried out for a whole year. Authors noted very distinct seasonal ... available from year-round studies. Most of earlier studies which reported myctophids in the diet ... of gentoo penguin Pygoscelis papua at Macquarie Island: Winter and early breeding season. Emu, 89(2): 71-78 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Author(s): Sabourenkov, E.