The Nature of Correlation between the Degree of Dominance and Species Richness in Plant Communities of Different Types: Are the Processes Biological or Stochastic?

被引：2

作者：

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

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

Afanas'ev, D. F. ^{[3
]}

Sazonets, N. M. ^{[1
]}

Sushkova, E. G. ^{[3
]}

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

机构：

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

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

[3] Azov Inst Fisheries Res, Rostov Na Donu 344002, Russia

来源：

RUSSIAN JOURNAL OF ECOLOGY | 2019年 / 50卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

dominance; species richness; plant communities; organization models; stochastic processes; biotic interactions; EVENNESS; DIVERSITY; CONSEQUENCES; COMPETITION; IMPACT;

D O I：

10.1134/S1067413619040039

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Both biological and stochastic processes can account for the correlation between dominance and species richness in plant communities. We compared plant communities of different types with simulated cenoses composed of species with random values of relative abundance in order to identify the cause of the correlation. The results showed that the communities exposed to stress factors and/or frequent disturbances (trampling, grazing, and the deficit of heat, water, light, or other resources) were characterized by low or moderate correlation between the degree of dominance and species richness and stochastic processes could account for the correlation in this case, whereas the communities from relatively favorable habitats (grasslands and wastelands) showed moderate or strong correlation, which could not be explained by stochastic processes alone. We suggested that the correlation was due to biological factors, among others.

引用

页码：422 / 430

页数：9

共 38 条

[1] Relationship between Degree of Dominance and Species Richness in Grass Communities with Different Productivities [J].