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Science et changements planétaires / Sécheresse

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La sécheresse et les schémas de distribution des criquets en Asie centrale et septentrionale Volume 7, issue 2, Juin 1996

Author
Institut de systématique et d’écologie de la faune, Division sibérienne de l’Académie des sciences russe, 11 Frunze St., Novosibirsk 630091, Russie, et Département de Biologie générale, Université d’État de Novosibirsk, 2 Pirogova St., Novosibirsk 630090, Russie
  • Page(s) : 129-32
  • Published in: 1996

General patterns of distribution of acridid taxa, populations and communities in the inner part of temperate Eurasia are discussed in connection with the aridity factor. The general diversity of these insects increases from the northern part of the arid and subarid areas to the southern one. The arid lands of Central Asia are settled by various endemic taxa. That supports the point of view concernig an ancient origin of the desert fauna of grasshoppers and allows us to suppose that the aridity factor including droughts is the one of the main factor of acridid evolution. In Central and North Asia, there are at least two types of areas where some outbreaks of non-swarming grasshoppers and locusts may begin: the northern one includes Central Yakutia, the forest-steppes, the steppes and the semi-deserts; the southern one, the deserts properly.