NATURAL SCIENCES

Journal of fundamental
and
applied researches

Certain results of study of cruciferous of disturbed habitats(within the Kazakh part of the Northern Turan)

2013. №4, pp. 13-21

Veselova Polina V. - Ph.D. (Biology), Lead Scientific Researcher, Institute of Botany and Phytointroduction, 36d Temiryazev Str., Almaty, 050040, pol_ves@mail.ru

Certain results of study (2002–2012) of species composition of Brassicaceae Burnett families of disturbed (secondary) habitats within Kazakhstani part of North Turan desert province were provided. It has been shown that, in summary, of violated habitats on the level of genuses, the main five (according to the number of genuses) is as follows: I) Strigosella – 10 genuses; II) Lepidum and Erysimum – 7 genuses each; III) Brassica – 5 genuses; IV) Rorippa, Sisymbrium, Camelina – 4 genuses each; V) Cardaria, Isatis, Alyssum, Goldbachia – 3 genuses each. There is also provided a classification of weed plants by types of habitats (segetal and ruderal and pasqual) used by the author in the course of analyzing the species of Brassicaeae family, growing on violated soils. According to it, the greatest quantity of cruciferous – 65 species was observed on agricultural fields (among harvests of cultural plants). The second by the number of species was secondary habitats associated with development of road network – 56 species, the third – deposits – 44 species, and the fourth – pasture lands totaling 41 species of Brassicaceae family. In addition, the group of ruderal plants included 35 species, group of segetal and segetal-ruderal – by 29 species and the group of pasquil weed plants – 24 species. Depending on peculiarities of distribution and encounter of cruciferous, the following groups were distinguished: I) Specific for North Turan flora the species of Brassicaceae family encountered either primarily at baseline (non-disturbed) vegetation communities or at baseline and at the areas of various degree of disturbance – in modified phytocoenosis and vegetation groupings; II) Species on the whole are widely distributed encountered both in baseline vegetation communities and disturbed phytocoenosis; III) Non-specific for North Turan flora species of cruciferous encountered within considered region mainly or solely at secondary habitats.

Key words: North Turan,cruciferous,disturbed (secondary) habitats,anthropophilic species