VARIABILITY IN SPECIES RICHNESS AND GUILD STRUCTURE IN 2 SPECIES-RICH GRASSLANDS

被引：12

作者：

KLIMES, L

JONGEPIER, JW

JONGEPIEROVA, I

机构：

[1] Institute of Botany, Academy of Sciences of the Czech Republic, Treboň, CZ-379 82

[2] Administration of the Protected Landscape Area Bílé Karpaty, Veselí nad Moravou, CZ-698 01

来源：

FOLIA GEOBOTANICA & PHYTOTAXONOMICA | 1995年 / 30卷 / 02期

关键词：

MEADOW STRUCTURE; NICHE LIMITATION; VARIANCE TEST;

D O I：

10.1007/BF02812102

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

It has been suggested that variation in the proportion of species in guilds (= guild proportionality) indicates community structuring by guilds in biotic communities. This hypothesis was tested on a subthermophilous grassland and a mesotrophic meadow at a scale of 0.09 m(2) based on a five-year data set. Further, variation in the total number of species, variation in the number of species belonging to a guild and non-randomness in species composition of guilds were studied. A number of criteria for guild definition were used, such as life form, Grime's C-S-R strategy, phenology, plant height, pollination and dispersal syndromes, leaf shape and anatomy and taxonomy at the family level. The observed variation in the number of guild species corresponded to the null model in which species assemblages with fixed species richness per square were randomly generated from the species pool. The observed variation in the number of guild species was often higher than the variation calculated for randomly distributed species whereas the variation in the proportion of guild species was in some cases lower than the variation calculated for randomly distributed species with fixed frequencies. Possible reasons for the discrepancy in the results based on different models are discussed. It is concluded that there is little evidence of guilds in the organization of grasslands.

引用

页码：243 / 253

页数：11

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