Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.2307/176844 |
Species richness and biomass: Dissection of the hump-shaped relationships | |
Guo, QF; Berry, WL | |
通讯作者 | Guo, QF |
来源期刊 | ECOLOGY
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ISSN | 0012-9658 |
出版年 | 1998 |
卷号 | 79期号:7页码:2555-2559 |
英文摘要 | The relationship between species richness and biomass is and has been one of the most controversial subjects in ecology. This paper examines these relationships from the perspectives of habitat heterogeneity and environmental gradients measured within and cross five microhabitat types. Species richness, aboveground biomass, and their relationships were compared in two ways: with samples aggregated by microhabitat type, and with analysis of all microhabitat types. Within microhabitat types, in which the environment was relatively homogeneous, we found the species richness-biomass relationship to be positive, negative, or non-existent. The relationship is positive when biomass is low tin open and half-shrub microhabitats) and negative when it exceeds a certain level(e.g., under shrubs). When the sample area encompassed different microhabitat types, a "hump-shaped" relationship was detected. The mechanisms underlying these observed patterns are discussed from the perspectives of environmental gradients and competition. |
英文关键词 | Chihuahuan Desert (Arizona, USA) competitive exclusion environmental gradients habitat heterogeneity habitat productivity species richness-biomas relationship unimodal relationship |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000076300200028 |
WOS关键词 | PLANT COMPETITION ; PRODUCTIVITY GRADIENTS ; ECOLOGICAL COMMUNITIES ; REGIONAL PROCESSES ; DIVERSITY ; SCALE ; VEGETATION ; SUCCESSION ; STABILITY ; VARIABLES |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | University of California, Los Angeles |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/135629 |
作者单位 | (1)Univ Calif Los Angeles, Dept Biol, Los Angeles, CA 90095 USA |
推荐引用方式 GB/T 7714 | Guo, QF,Berry, WL. Species richness and biomass: Dissection of the hump-shaped relationships[J]. University of California, Los Angeles,1998,79(7):2555-2559. |
APA | Guo, QF,&Berry, WL.(1998).Species richness and biomass: Dissection of the hump-shaped relationships.ECOLOGY,79(7),2555-2559. |
MLA | Guo, QF,et al."Species richness and biomass: Dissection of the hump-shaped relationships".ECOLOGY 79.7(1998):2555-2559. |
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