Resultados de la búsqueda
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
, together with suggested further areas for investigation. Amongst the key inferences of the study are that ... of this species declined substantially over the first 20 years of the fishery, from 1970 to 1990 ... results and the assumptions on which they are based is discussed, together with suggested further areas ... середине 20-го столетия и рассматривается информация об уровнях популяции и изменений, которая появилась ... ). Antarctic blue whales (Balaenoptera musculus) were harvested legally from 1904 for almost 60 years, fin ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Autor(es): Mori, M. and D.S. Butterworth
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Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season
NO.487 n-297 No.488 n-300 No.489 n=314 No.490 n=309 No.491 n=303 20 30 40 50 ... Feb. n=4696 Area H2 Early Mar. n=5319 Area H2 20 30 40 50 Body length (mm) 60 Fig. 9 ... off Africa. In recent years, the through-year activity of the trawlers has come to be incorporated ... Wilkes Land (including George V Land), and the Scotia Sea. In earlier years, the trawlers operated in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Autor(es): Ichii, T.
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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 ... 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 ... -secteurs selon la repartitiondes populations de res sources marines vivantes de l'Antarctique" (Article ... in earlier years within the sector from 700 W to 160o W. More recently there has been a move within ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Autor(es): Chittleborough, R.G.
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Selectivity of commercial and research trawls in relation to krill
more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... mm) que celles du chalut de recherche (30-54 mm). La difference maximale de longueur moyenne dans ... -58 MM). YeM B ynoeax mccneAoBaTenhcKoro Tpana (30-54 MM). M ~ K C H M ~ ~ ~ H O ~ pacxoxAeHBe ... investigacion (30-54 mm). La diferencia maxima entre 10s promedios de las tallas de las capturas de ambas redes ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Autor(es): Kasatkina, S.M
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Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
I I / B / / /: I I I I I ./e r-=- 20 30 Figure 5: Selectivity ogive for ... ..-_, __ ...,.--_,.--_...,.--__ 20 30 1.,0 50 [CM] I=\S+\ LENCHl Selection of bumphead notothenia on ... -.-_ .... 1 20 1 1 1 I 1 1 1 30 ':'0 50 Figure 7: Selectivity ogive for Antarctic icefish by ... 40 I J i 30 I 20 Figure 8: Selectivity ogives for Antarctic icefish on Antarctic fishing grounds ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Autor(es): Zaucha, J.
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Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica
locations, or between samples collected in consecutive years, were observed. These results, based on ... 54.1 cm) move to the bottom, become benthic and spend a few years on the continen- tal shelf at depths ... locations, or between samples collected in consecutive years, were observed. These results, based on ... isolated population of D. mawsoni seems very unlikely given the long (almost two years) pelagic stage ... products: melt- ing at 92°C for 20 sec, annealing of primers at 55°C for 40 sec, DNA syntheses at 72°C for ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Autor(es): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev
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Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?
Type I and Type II errors. Lack of knowledge about the sex ratio between years makes combining the data ... knowledge about the sex ratio between years makes combining the data a very doubtful procedure and use of a ... met (Klecka, 1980): (i) no characteristics were linear combinations of each other; (ii ... equal variance and equal numbers of males and females in the sample. The first condition was met in ... of up to 20%, a very serious situation (Type II error). 6. DISCUSSION It is apparent that it ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Autor(es): Agnew, D.J.
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Telemetry monitoring of ecological resources
the application where a radio marker beacon is attached to an animal and the animal then relopated ... closure. If the animal is not active the clock will not be reset and the clock sends an output after a ... on birds for short-term applications. Usual life of adhesive attachment on birds is about 30 days ... . Range for an implanted transmitter is typically 30 percent of the range which would be received from ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Autor(es): Kuechle, V.B.
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Spatial distribution of management measures, Antarctic krill catch and Southern Ocean bioregions: implications for conservation planning
biore- gion defined on the basis of long-term (up to 30 years) averages of time series (Grant et al ... with similar distributions across the Convention Area. 0 5 10 15 20 25 30 35 0 2 4 6 8 10 12 ... evidence, and shall contribute, taking full consideration of Article II of the CAMLR Convention where ... (e.g. Margules and Pressey, 2000; Pressey et al., 2007; Ardron et al., CCAMLR Science, Vol. 20 (2013 ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 1–19 : Autor(es): Grant, S.M., S.L. Hill and P.T. Fretwell
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Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia
restricted area of about 30 x 20 km. There were also a few isolated hauls made outside this area. During ... enregistrees dans le secteur de la Georgie du Sud. L'analyse de ces donnees met en evidence une variabilitk ... and Goss, 1991). These data have not previously been analysed and plotted together with bathymetry ... appear that areas well to the west (-42"W and 54"s) were targeted in some years (CCAMLR Statistical ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Autor(es): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt