Please use this identifier to cite or link to this item:
Title: Environmental filtering both indirectly and directly drives the Dry Tropical Forest species composition and functional composition
Keywords: Environmental heterogeneity
Functional composition
Phylogenetic composition
Soil conditions
Structural equation models
Heterogeneidade ambiental
Composição funcional
Composição filogenética
Condições do solo
Modelos de equações estruturais
Issue Date: Jan-2021
Publisher: The Ecological Society of Japan
Citation: GIANASI, F. M. et al. Environmental filtering both indirectly and directly drives the Dry Tropical Forest species composition and functional composition. Ecological Research, Tsukuba, v. 36, n. 1, p. 107-118, 2021. DOI: 10.1111/1440-1703.12178.
Abstract: Soil is a relevant driver of taxonomic, functional and phylogenetic composition at local scales. However, the mechanisms by which the soil act in these components or how these components interact with each other are not elucidated. Herein, we propose to understand the role of soil (environmental filtering) on the turnover of taxonomic and phylogenetic components and their role in determining the functional composition of Seasonally Dry Tropical Forest (SDTF) communities. We sampled all the arboreal individuals with Diameter at Breast Height equal to or higher than 3 cm and collected soil variables of 25 units from five SDTF fragments located in the Brazilian Caatinga Domain. These data enabled us to obtain the taxonomic, functional and phylogenetic composition of each plot, which were then analyzed by Structural Equation Models jointly with the soil variables. Our results suggest that the soil conditions select specific phylogenetic lineages from a regional species pool according to the adaptive potential, which affects the distribution and abundance of species (taxonomic composition). However, it was not possible to establish a direct relationship between the phylogenetic composition and the taxonomic composition, possibly due to the use of labile functional traits in the analysis. We also found that soil acts directly on the functional composition, leading to a differential success of individuals which would represent a direct and indirect effect of taxonomic composition on the functional composition. Thus, we found community aspects result from different ecological mechanisms which act in a continuous and progressive way between functional, phylogenetic and taxonomic composition.
Appears in Collections:DCF - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.