Plant species associations in alpine-subnival vegetation patches in the Central Caucasus

Kikvidze, Zaal Plant species associations in alpine-subnival vegetation patches in the Central Caucasus. Journal of Vegetation Science.

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Abstract

Abstract. Patches of herbaceous vegetation found at the boundary of the alpine and subnival belts in the Central Caucasus (3000 m) were analysed for species composition, interspecific associations, as well as for relations between age, size and diversity of the patches. 34 plant species were recorded. Positive and negative associations were found among the most frequent species. A model is presented that describes the cumulation of species in patches during succession. In the final and stable successional stage, the maximum number of species within a patch was nine. Species composition varies in patches of different age, typical alpine species being more frequent in older ones. The results are interpreted as evidence for niche differentiation and selection of species composition through the 'sieve’ of interspecific relations, taking place during succession in the studied patches.

Item Type: Article
Subjects: Q Science > Ecology
Divisions: Institutes > 4D Research Institute
Depositing User: Prof. Zaal Kikvidze
Date Deposited: 22 Jan 2014 14:34
Last Modified: 22 Jan 2014 14:34
URI: http://eprints.iliauni.edu.ge/id/eprint/400

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