干旱区生态环境知识资源中心(Arid): Do functional identity and divergence promote aboveground carbon differently in tropical semi-arid forests and savannas?

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DOI	10.1002/ecs2.3563
	Do functional identity and divergence promote aboveground carbon differently in tropical semi-arid forests and savannas?
	Mensah, Sylvanus; Van der Plas, Fons; Noulekoun, Florent
通讯作者	Mensah, S (corresponding author), Univ Abomey Calavi, Fac Sci Agron, Lab Biomath & Estimat Forestieres, Cotonou, Benin.
来源期刊	ECOSPHERE
ISSN	2150-8925
出版年	2021
卷号	12 期号:6
英文摘要	Various studies have shown that plant species richness can promote ecosystem functions such as biomass storage. However, it is less well known whether this is mostly driven by the dominance of a few species and their associated traits (functional identity), or by complementarity among species that highly vary in their traits (functional diversity). The relative contribution of functional diversity and functional identity on biomass and carbon storage may in part depend on the type of functional traits that are considered, and on ecosystem type. Here, we used forest inventory data from West African semi-arid environments, and functional traits (wood density and tree maximum height) to examine the effects of functional trait identity (FI or community weighted mean; CWM) and diversity (FD or single functional divergence; FDvar) on aboveground carbon (AGC) storage in both forests and savannas. We fitted simple linear and structural equation models to test the direct and indirect effects of functional traits on AGC, while accounting for potential effects of vegetation stand structure such as stand density and basal area. When evaluated independently, CWM of tree maximum height and FDvar of wood density correlated positively with AGC, in both forests and savannas, whereas species richness was unrelated to AGC. However, structural equation models indicated different mechanisms by which these biodiversity components drove AGC in forests and savannas. In forests, species richness had an indirect, positive effect on AGC via basal area, but also an indirect, negative effect, through a reduction in CWM of maximum height. In savannas, species richness had a direct, negative effect on AGC, while both CWM of maximum height (through an increase in basal area) and FDvar of wood density had positive effects. Our study suggests that integrative models are crucial for understanding the effects of species richness, functional trait diversity, and identity on AGC across forests. Furthermore, our study shows that relationships between biodiversity and AGC differ among ecosystem types. In both forests and savannas, FI played an important role, as AGC was maximized in communities dominated by species with a high maximum height. However, only in savannas a high FD additionally promoted AGC.
英文关键词	community weighted mean functional diversity maximum plant height semi-arid tree biomass carbon
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000667707100030
WOS关键词	TREE SPECIES-DIVERSITY ; TRAIT DIVERSITY ; ECOSYSTEM FUNCTION ; BIOMASS ; PRODUCTIVITY ; BIODIVERSITY ; TEMPERATE ; COMPLEMENTARITY ; MAINTENANCE ; DOMINANCE
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368711
作者单位	[Mensah, Sylvanus] Univ Abomey Calavi, Fac Sci Agron, Lab Biomath & Estimat Forestieres, Cotonou, Benin; [Van der Plas, Fons] Wageningen Univ, Plant Ecol & Nat Conservat Grp, POB 47, NL-6700 AA Wageningen, Netherlands; [Van der Plas, Fons] Univ Leipzig, Inst Biol, Systemat Bot & Funct Biodivers, Johannisallee 21-23, D-04103 Leipzig, Germany; [Noulekoun, Florent] Korea Univ, Dept Environm Sci & Ecol Engn, 145 Anamro, Seoul 02841, South Korea
推荐引用方式 GB/T 7714	Mensah, Sylvanus,Van der Plas, Fons,Noulekoun, Florent. Do functional identity and divergence promote aboveground carbon differently in tropical semi-arid forests and savannas?[J],2021,12(6).
APA	Mensah, Sylvanus,Van der Plas, Fons,&Noulekoun, Florent.(2021).Do functional identity and divergence promote aboveground carbon differently in tropical semi-arid forests and savannas?.ECOSPHERE,12(6).
MLA	Mensah, Sylvanus,et al."Do functional identity and divergence promote aboveground carbon differently in tropical semi-arid forests and savannas?".ECOSPHERE 12.6(2021).