Résultats de la recherche

1. 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

   can be found in Rivoirard et al. (2000)) of density distribution, as given by Hewitt et al. (2004a ... ). In addition to the survey total, biomass estimates derived by the MaxEnt method for each of the ... particularly important from an ecosystem management per- spective. Since the densities estimated by the Jolly ... density distribution maps generated by MaxEnt enable biomass values for the SSMUs to be inferred on a ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Auteur(s): Heywood, B.G., A.S. Brierley and S.F. Gull

2. A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region

   treatment of krill dynamics: the krill–predator–fi shery model (KPFM), developed by Dr G. Watters (NOAA ... constant mean mass, whereas the spatial multi-species operat- ing model (SMOM) developed by Dr É. Plagányi ... seasonal. Lifetime aver- aged annual rates (indicated by the symbol μ) were divided by 2 to obtain ... dealt with by reporting minimum and maximum plausible values for parameters alongside average values ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Auteur(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters

3. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   expeditions), oppor- tunistic, or poorly timed relative to the current standard established by the CCAMLR ... gentoo penguin breeding has also been suggested by Gwynn (1953). Warm October temperatures hasten snow ... monthly sea-ice coverage for all sites was taken as reported for the Palmer Station LTER region by the ... ://pal.lternet.edu/data/data/weather/palmer/daily8905 (Data from 2006–2008 obtained by personal communication with ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

4. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   -frequency data. As a response to calls by the Scientific Commit- tee for management advice for toothfish ... composition of a fish population is affect- ed by fishing: fishing is size-selective and truncates the length ... -frequency composition by generally re- moving larger fish. And because length-frequency data can be ... - nents representing cohorts is limited by the overlap of older cohorts, and Sparre and Venema (1998 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Auteur(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

5. The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations

   (which can be assumed as known) introduced by the method of obtaining init1alinfo:rmation, one should ... covered by a vessel between two successive echo pulses, is much less that the other one ( "i. ) which ... == =?: f i / N calculated for all knots (IV is the general num- /,21 ber of knots), is expressed by the ... survey stations are usually installed far- between, thuB, by the order of mag~tude grid steps are no ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 213-228 : Auteur(s): Kizner, Z.I.

6. Surface areas of seabed within the 500 m isobath regions within the South Shetland Islands (Subarea 48.1)

   isobath by combining Admiralty Chart data with soundings collected during research cruises by the ... further refined by Kock and Harm (1995) using additional information collected during research cruises ... in this region relied on constructing isobaths by hand from available data sources, and subdividing ... areas into smaller rectangular subareas. These subdivisions were then converted to square areas by ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 133–140 : Auteur(s): Jones, C.D., S.N. Sexton and R.E. Cosgrove III

7. Small scale krill surveys: simulations based on observed euphausiid distributions

   suggested for both these designs is that recommended by BIOMASS (1986) and consists of obtaining mean ... variance increases with transect length. The areal shape of euphausiid aggregations has been reviewed by ... , and do not generally have shapes that can be approximated by circles, the case that is usually ... collected by Nicol (1986). We examine the behaviour of random parallel transect and radial transect designs ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Auteur(s): Agnew, D.J. and S. Nicol

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

   bones of selected species of Antarctic fish. Samples were kindly provided by the USSR, United Kingdom ... microscopic slides by the Convener in the course of the exchange. Both otoliths and scales of 57 specimens ... . Scales are usually cleaned by soaking them in 10% ammonia (VNIRO, AtlantNIRO) or in a soap solution (Sea ... aged by scales prepared similarly to those of N. rossii (Boronin and Frolkina, 1976; Skora, 1980 ...

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

9. Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)

   question of otolith erosion, which has been highlighted by Jobling and Breiby (1986) and may be ... 24 C. gunnari to indicate the likely size of fish eaten by the seals (North et al., 1983). While ... that study provided a good first approximation, the studies by Reid (1995) and North (1996) indicate ... otoliths from a collection of 350 fish from Heard Island has been published by Williams and McEldowney ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Auteur(s): Everson, I., B. Bendall and A. Murray

10. Factors to consider in developing management measures for krill

    Antarctic waters as a whole. This potential has been crudely guaged by considering the food consumption of ... is defined as a group of individuals of the same species whose gains by immigration and losses by ... catches are attained by accepting a lower average yield. 178 3.4 Data and Assessment Methods ... action implied by the method would achieve the overall objectives. Conversely, using a procedure which ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Auteur(s): de la Mare, W.K.

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