Résultats de la recherche
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
la bl e nu m be rs (m ill io ns ) 1998 1999 2000 2001 Year 0 10 20 30 40 50 Pr ed ic ... te d nu m be rs (m illi on s) 1998 1999 2000 2001 Year 50 40 30 20 10 0 P re di ct ... 00 30 00 40 00 40 00 30 00 30 00 20 00 10 00 50 0 M A R IO N /P . E D W A R D CR O ZE ... 22 10 7 20 4 30 6 Fi sh in g gr ou nd C 23 7 50 51 0 18 7 39 13 9 25 Pl at ea u ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Auteur(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
for differences in the extent of identification of early larval stages. Likewise, the time of year ... , since mesozooplankton typically remove <30% of primary production. This emphasises the dominant role ... one-half of those above. A change in the view of SO copepods in the last 20 years has followed an ... the extent of identification of early larval stages. Likewise, the time of year, depth of sampling ... typically remove <30% of primary production. This emphasises the dominant role of microbial food chains ... -year history of active research on Southern Ocean (SO) zooplankton, several thousand papers have ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Auteur(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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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 ... середине 20-го столетия и рассматривается информация об уровнях популяции и изменений, которая появилась ... statistically significant increase (about 5% per year) in minke whale recruitment dur- ing the period from ... ashore, and suggested the popula- tion increase from 1977 to 1991 to be 9.8% per year. Observations at ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Auteur(s): Mori, M. and D.S. Butterworth
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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 ... regions - 521 - persistent from year to year and presumed to act as foci during the southern summer ... year and having different food preferences to Adelie penguins, might be expected to have different ... ). DEGREES WEST 60 40 20 0 1/ I I " I 55~ Sector 1 I 50~ IO~ 5 : I I I I I I - 528 ... - DEGREES EAST DEGREES WEST I 20 40 60 eo 100 120 140 160 180 160 140 120 100 80 60 11 I I I I I I I I I ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Auteur(s): Chittleborough, R.G.
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
conservatively estimated subarea biomass in up to 20% of years due to high variability in krill biomass indices ... 1991, is 0.62 million tonnes year –1, equivalent to ~1% of the regional biomass estimated in 2000. Each ... subarea has also had its own catch limit, between 0.093 and 0.279 million tonnes year –1, since 2009 ... recent years. This suggests that fishing at the trigger level would be equivalent to a long-term ... catch limits exceed 9.3% of conservatively estimated subarea biomass in up to 20% of years due to high ... biomass (i.e. the total weight of reproductively mature individuals) after 20 years of fishing should ... for 20 years would reduce the krill stock by 2% (SC-CAMLR, 2011). Clearly, any significantly greater ... such as these. Multi- decadal series (30 to 40 years of data) (Henson et al., 2010) or parallel series ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Auteur(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins
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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 : Auteur(s): Kasatkina, S.M
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Factors to consider in developing management measures for krill
year to year. The various techniques used to estimate the abundance of animal populations also give ... constant from year to year. Yet either strategy has to achieve the same conservation objectives. In ... fluctuations in catch from year to year cannot all be fully achieved simultaneously. For example, steady ... year to year. 3.5 Time Frame for Implementation A further element to consider in developing ...
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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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 ... products: melt- ing at 92°C for 20 sec, annealing of primers at 55°C for 40 sec, DNA syntheses at 72°C for ... . 41 7 0. 30 0 0. 33 3 0. 25 0 0. 30 8 0. 25 0 0. 31 5 0. 30 0 TP I:1 27 N 18 ... 17 22 10 18 21 24 21 20 A 0. 00 0 0. 00 0 0. 00 0 0. 00 0 0 ... 24 21 20 G 0. 86 1 0. 94 1 0. 97 7 0. 95 0 0. 83 3 0. 95 2 0. 91 7 0 ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Auteur(s): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev
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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 ... with adhesive will be lost during the animals molt and thus have a useful life of a year or less ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Auteur(s): Kuechle, V.B.
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Spatial distribution of management measures, Antarctic krill catch and Southern Ocean bioregions: implications for conservation planning
with similar distributions across the Convention Area. 0 5 10 15 20 25 30 35 0 2 4 6 8 10 12 ... biore- gion defined on the basis of long-term (up to 30 years) averages of time series (Grant et al ... (e.g. Margules and Pressey, 2000; Pressey et al., 2007; Ardron et al., CCAMLR Science, Vol. 20 (2013 ... FSRs may have been fished only once, while others have large catches reported every year. These ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 1–19 : Auteur(s): Grant, S.M., S.L. Hill and P.T. Fretwell