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In this paper the recent population changes of the Wild Boar in different European countries is analysed through the study of hunting statistics. A simultaneous increase in numbers is observed throughout the whole area during the period 1965–1975. From 1975 onwards the population stabilizes itself apart from in peripheral areas like Finland. Potentially favourable factors which play a part in this process are discussed and certain reproductive and dispersive characteristics which favour its invasive behaviour are discussed. 相似文献
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TANATIN BI 《Mikrobiologiia》1951,20(6):506-511
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S. V. Polosatkin A. V. Burdakov M. V. Ivantsivskiĭ V. S. Koĭdan V. K. Ovchar A. F. Rovenskikh V. V. Semionov M. G. Fedotov 《Plasma Physics Reports》2006,32(2):108-113
A multichannel Thomson scattering diagnostics for measuring the plasma parameters in the GOL-3 facility was designed and created
at the Budker Institute of Nuclear Physics of the Siberian Division of the Russian Academy of Sciences. The diagnostics operates
at the fundamental harmonic of a neodymium laser (1.06 μm) and allows one to perform measurements over a wide range of electron
temperatures and densities with high spatial and time resolutions. A special multipulse oscillator is developed that makes
it possible to perform up to 20 measurements of the plasma temperature and density over a period of 300 μs during one shot.
The laser used to generate probing radiation, the recording system, and the calibration procedure are described. Results from
measurements of the temporal evolution of the plasma density in the GOL-3 in different stages of the discharge are presented
to illustrate the system operation.
Original Russian Text ? S.V. Polosatkin, A.V. Burdakov, M.V. Ivantsivskiĭ, V.S. Koĭdan, V.K. Ovchar, A.F. Rovenskikh, V.V.
Semionov, M.G. Fedotov, 2006, published in Fizika Plazmy, 2006, Vol. 32, No. 2, pp. 128–133. 相似文献
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ANDRÉIA SILVA FLORES RÉA M. CORRÊA ELIANA R. FORNI-MARTINS ANA M. G. AZEVEDO TOZZI 《Botanical journal of the Linnean Society. Linnean Society of London》2006,151(2):271-277
Chromosome numbers were counted for 23 species of Crotalaria native to Brazil. Among these data there were new counts for 15 taxa, and some confirmed previous reports or represented numbers that were different from those cited previously. The chromosome numbers most frequently found were 2 n = 16 and 2 n = 32. Only C. incana L. had 2 n = 14 and C. tweediana Benth. had 2 n = 54. The counts 2 n = 32 and 54 were found in species of section Calycinae and 2 n = 16 and 14 in species of section Chrysocalycinae . The data revealed the importance of chromosomal parameters in the characterization of sections Calycinae and Chrysocalycinae in Brazil. We discuss the systematic significance and evolutionary aspects for the genus, comparing the results with the two sections that are native in Brazil. © 2006 The Linnean Society of London, Botanical Journal of the Linnean Society , 2006, 151 , 271–277. 相似文献
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