Patch isolation and shape predict plant functional diversity in a naturally fragmented forest  

作　　者：Amaranta Arellano-Rivas J.Arturo De-Nova Miguel A.Munguía-Rosas 

机构地区：[1]Instituto de Investigación de Zonas Desérticas,Universidad Autónoma de San Luís Potosí,San Luis Potosí78377,México [2]Laboratorio de Ecología Terrestre,Departamento de Ecología Humana,Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional(CINVESTAV),Mérida 97310,México [3]Facultad de Agronomía,Universidad Autónoma de San Luís Potosí,San Luis Potosí78321,México

出　　处：《Journal of Plant Ecology》2018年第1期136-146,共11页植物生态学报（英文版）

基　　金：This work was supported by the Consejo Nacional de Ciencia y Tecnología(CONACyT)[grant numbers:CB-2012-177680;project CB-2014-243454,INFR-2013-204735]。

摘　　要：Aims It is known that taxonomic diversity can be predicted by the spatial configuration of the habitat,in particular by its area and degree of iso-lation.However,taxonomic diversity is a poor predictor of ecosystem functioning.While functional diversity is strongly linked to the func-tionality and stability of ecosystems,little is known about how changes in the spatial configuration of the habitat affect functional diversity.In this study,we evaluated whether the spatial configuration of forest patches predicts the functional diversity of plants in a fragmented forest.Methods Five functional leaf traits(leaf dry matter content,leaf punch force,specific leaf area,leaf size and leaf thickness)were measured for 23 dominant plant species in 20 forest patches in a naturally fragmented forest on the yucatan Peninsula.Abundance-weighted multivariate and individual trait metrics of functional diversity were calculated and cor-related with size,degree of isolation and the shape of forest patches.Important Findings Patch shape was negatively correlated with multivariate and individ-ual trait(leaf dry matter content and leaf size)metrics of functional diversity.Patch isolation measures were also negatively correlated with individual trait(leaf dry matter content,leaf punch force and leaf size)metrics of functional diversity.In other words,greater patch shape irregularity and isolation degree impoverish plant func-tional variability.This is the first report of the negative effects of patch shape irregularity and isolation on the functional diversity of plant communities in a forest that has been fragmented for a long time.

关 键 词：forest fragmentation functional diversity habitat spatial configuration petenes YUCATAN 

分 类 号：Q94[生物学—植物学]