Relationship between Degree of Dominance and Species Richness in Grass Communities with Different Productivities

被引：5

作者：

Akatov, V. V. ^{[1
]}

Akatova, T. V. ^{[2
]}

Chefranov, S. G. ^{[1
]}

机构：

[1] Maykop State Technol Univ, Maykop 385000, Russia

[2] Caucasian State Nat Biosphere Reserve, Maykop 385000, Russia

来源：

CONTEMPORARY PROBLEMS OF ECOLOGY | 2018年 / 11卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

grass communities; dominance; species richness; phytomass; competition; life strategies; organizational models; PLANT-COMMUNITIES; DIVERSITY; EVENNESS; COMPETITION; BIOMASS; INVASIONS; ECOSYSTEM; IMPACT; TREE; ENVIRONMENTS;

D O I：

10.1134/S1995425518040029

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The aim of this study is to test the assumption that the relationship between the degree of dominance and local species richness may be different in grass communities with different productivities. Alpine, subalpine, and low-mountain grasslands, as well as subalpine mires, alpine communities of low-snow habitats and those with long-term snow cover, steppe communities, and the grass layer of low-mountain forest communities of the Western Caucasus and Ciscaucasia, are used as objects of research. The data on the phytomass of 419 plots with an area of 0.25 m(2) are studied. The results show that, the higher the mean productivity of communities is, the closer the relationship between the degree of dominance and species richness is, and the closest relationship is observed in meadow communities. Possible causes of these relationships are considered. It is reasonably suggested that this may be due to the features of the organization of plant communities with high and low productivity (in particular, high or low intensity of interspecific competition).

引用

页码：355 / 365

页数：11

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