Результаты поиска

1. Modelling krill recruitment

   observed values of the mean proportion of recruits and its variance to model recruitment in a krill ... population in terms of numbers of recruits. The method includes the calculation of natural mortality and ... in the observed recruitment parameters.  File:  04delamare-mod-rec.pdf ... . It can be shown that: In fact no generality is lost if we put E[A,] = 1 everywhere, and so: If ... and its variance to model recruitment in a krill population in terms of numbers of recruits. The ... which are consistent with the statistical uncertainty in the observed recruitment parameters. Resume ... , population, modelling, recruitment, mortality, CCAMLR INTRODUCTION In a paper published in this volume ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 49–54 : Автор(ы): W.K. de la Mare

2. A rationale for conservation areas within Antarctic waters

   :  The application of potential conservation measures listed in Article IX 2 of the Convention requires ... marine living resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas ... in the eastern margin of the Ross Sea, the coast adjacent to the prydz Bay gyre, and on the ... potential conservation measures listed in Article IX 2 of the Convention requires "the designation of ... " (Article IX 2 (b)). In order to select meaningful boundaries for such areas, first priority has been ... provisions have not yet been applied systematically in these waters. While the Antarctic Treaty System ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Автор(ы): Chittleborough, R.G.

3. Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea

   georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... and growth in A. georgiana that is radically different from the published interpretation is presented ... . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves have ... . Age, growth, maturity, and mortality of the Alaska skate, Bathyraja parmifera, in the eastern Bering ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... and growth in A. georgiana that is radically different from the published interpretation is presented ... . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Автор(ы): Francis, M.P. and M.J. Gallagher

4. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

   South Georgia (Subarea 48.3) Abstract / Description:  Krill distribution in the South Georgia area and ... many aspects of its variability have been extensively described in scientific literature. A summary of ... recent findings is discussed in this paper. There has been less focus on data concerning krill biomass ... assessments. The existing uncertainty in krill biomass assessment can be largely attributed to high ... in the east (see Table 2) made up more than half of the total biomass in the eastern part of the ... . Makarov**, L.G. Maklygin** Abstract * Krill distribution in the South Georgia area and many aspects ... of its variability have been extensively described in scientific literature. A summary of recent ... findings is discussed in this paper. There has been less focus on data concerning kriU biomass assessments ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Автор(ы): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

5. Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000

   line-transect acoustic survey data gathered in the boxes during austral summers from 1996 to 2000 ... 80 km transects in each box, providing about 1 600 density estimates per box. The MaxEnt technique ... × 0.5 km cells in each box, taking explicit account of the spatial relationship between densities in the ... observed data. Despite some very large interannual and regional differences in mean krill density, the ... for the western and eastern survey boxes in Figure 1. All maps are at N scales = 6, apart from ... uncertainty for acoustic surveys in the western and eastern survey boxes from 1996 to 2000. Jolly and Hampton ... data gathered in the boxes during austral summers from 1996 to 2000. Krill densities had previously ... been determined at approximately 0.5 km intervals along each of the ten 80 km transects in each box ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Автор(ы): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins

6. The survivorship of rays discarded from the South Georgia longline fishery

   sea surface by the Chilean fishing vessel Isla Sofía in May and June 2003 during the toothfish fishing ... season in Subarea 48.3. Capture depth had a consistently significant influence on the mortality of skates ... ) and the sex of rays also had some small influence on survivorship. Discard survivorship was 75% in ... waters shallower than 1 300 m (i.e. 1 200–1 300 m), 46% in waters 1 300–1 500 m, and 24% in waters ... surface by the Chilean fi shing vessel Isla Sofía in May and June 2003 during the toothfi sh fi shing ... season in Subarea 48.3. Capture depth had a consistently signifi cant infl uence on the mortality of ... % in waters shallower than 1 300 m (i.e. 1 200–1 300 m), 46% in waters 1 300–1 500 m, and 24% in ... on depth of capture. Further survival experiments should be conducted, particularly in shallow ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Автор(ы): Endicott, M. and D.J. Agnew

7. Characteristics of krill swarms from Prydz Bay

   , Antarctica, in December 1990. Swarm length, depth, thickness, Mean Volume Backscattering Strength (MVBS) and ... Euphausia crystallorophias. An increase in swarm length was seen with increasing distance from the coast ... hours (north of 67°51 '38"S) and the loss of resolution that this resulted in. Resolution is also lost ... Subgroup on Survey Design was derived from a survey of Prydz Bay, Antarctica, in December 1990. Swarm ... crystallorophias. An increase in swarm length was seen with increasing distance from the coast. Resume Le jeu ... of the swarm characteristics it describes. The dataset used in this analysis is relatively short ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 177–189 : Автор(ы): Agnew, D.J. and I.R. Higginbottom

8. Differentiation of independent populations of Antarctic krill

   :  Several countries have recently shown an interest in commercial krill fishing. An understanding of krill ... of recent studies in genetic and morphophysiological variability of krill and Antarctic water ... . superba in the Southern Ocean subdivided into several independent sub-populations. The number of these sub ... interest in commercial krill fishing. An understanding of krill population structure is needed to ... establish sound management 'of krill fisheries. A short review is undertaken of recent studies in genetic ... review, it is suggested that there is probably one composite population of E. superba in the Southern ... OF THE ANTARCTIC KRILL In recent years, several countries (Poland, Federal Republic of Germany ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Автор(ы): USSR

9. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   same species among different laboratories. Four species were included in the exchange: Notothenia ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... . antarcticum. Agreement between otoliths and scales of individual N. gibberifrons was in the order of 50 ... laboratories. Four species were included in the exchange: Notothenia rossii, ChampsocephaJus gunnari ... , Notothenia gibberifrons and PJeuragramma antarcticum. The level of agreement in age determination was ... between otoliths and scales of individual N. gibberifrons was in the order of 50%. There was little ... recommendation of the CCAMLR Fish Age Determination Workshop held in Moscow from 14 to 19 July 1986 (SC-CAMLR ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Автор(ы): Kock, K.-H.

10. Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal distribution and early life history relevant to monitoring year-class strength and recruitment

    . In winter and summer fish larvae and early juveniles were present over the continental shelf and ... abundant near the coast, but rare in oceanic waters. During winter in the 265 m deep fiord of Cumberland ... East Bay the early stages of many species were found throughout the water column. In summer only four ... species of larvae were abundant, they were found in the upper 100 m of the water column, especially the ... the early life history stages of Antarctic fish at South Georgia are reported. In winter and summer ... , but rare in oceanic waters. During winter in the 265 m deep fiord of Cumberland East Bay the early ... stages of many species were found throughout the water column. In summer only four species of larvae ... were abundant, they were found in the upper 100 m of the water column, especially the top 2 m layer ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Автор(ы): North, A.W.

Страницы