DOI: 10.5061/dryad.h70rxwdsz
title: Data from: Testing the ectomycorrhizal dominance hypothesis for ecosystem multifunctionality in a subtropical mountain forest

description: Mycorrhizal associations are key mutualisms that shape the structure of
 forest communities and multiple ecosystem functions. However, we lack a
 framework for predicting the varying dominance of distinct mycorrhizal
 associations in an integrated proxy of multifunctionality across
 ecosystems. Here, we used the datasets containing diversity of
 mycorrhizal associations and 18 ecosystem processes related to supporting,
 provisioning, and regulating services to examine how the dominance of EcM
 associations affects ecosystem multifunctionality in subtropical mountain
 forests in Southwest China. Meanwhile, we synthesized the prevalence of
 EcM dominant effects on ecosystem functioning in forest biomes. Our
 results demonstrated that elevation significantly modified the
 distributions of EcM trees and fungal dominance, which in turn influenced
 multiple functions simultaneously. Multifunctionality increased with
 increasing proportion of EcM associations, supporting the
 ectomycorrhizal-dominance hypothesis. Meanwhile, we observed that the
 impacts of EcM dominance on individual ecosystem functions exhibited
 different relationships among forest biomes. Our findings
 highlight the importance of ectomycorrhizal dominance in regulating
 multifunctionality in subtropical forests. However, this ectomycorrhizal
 feedback in shaping ecosystem functions cannot necessarily be generalized
 across forests. Therefore, we argue that the predictions for ecosystem
 multifunctionality in response to the shifts of mycorrhizal composition
 could vary across space and time.
description: # Testing the ectomycorrhizal dominance hypothesis for ecosystem
 multifunctionality in a subtropical mountain forest Ya-Huang Luo
 Liang-Liang Ma, Marc W. Cadotte, Sebastian Seibold, Jia-Yun Zou, Kevin S.
 Burgess, Shao-Lin Tan, Lin-Jiang Ye, Wei Zheng, Zhi-Fa Chen, De-Tuan Liu,
 Guang-Fu Zhu, Xiao-Chun Shi, Wei Zhao, Zheng Bi, Xiang-Yuan Huang, Jia-Hua
 Li, Jie Liu, De-Zhu Li, Lian-Ming Gao (2024) to be published in New
 Phytologist. **A detailed description of the data file is given below.**
 **MEF_ALL_DATA.xlsx** plot ID: The identity of the plot Elevation1: The
 true elevation for each plot type: The plot belong to the eastern slope or
 western slope Predictors (EcM dominance gradient) EcM_trees: The relative
 proportion of EcM tress EcM_fungi: The relative proportion of EcM fungi 18
 Ecosystem functions (scaled data) **Description of the variables and
 units** AGB (Mg/ha ): Above-ground biomass for each plot Tree leaf C/N:
 Tree leaf ratio of carbon to nitrogen Tree leaf N/P: Tree leaf ratio of
 nitrogen to phosphorus Tree. regeneration: Log10 transformation of the
 abundance data Understorey. diversity: Understory Shannon diversity
 Soil.organic.carbon ( g/kg): Soil organic carbon Soil.C/N: Soil ratio of
 carbon to nitrogen Soil.N/P: Soil ratio of nitrogen to phosphorus Soil.A.N
 (mg/kg): Soil available nitrogen Soil.A.P (mg/kg): Soil available
 phosphorus Soil urease activity (mg/(g.h)): Soil urease activity Soil acid
 phosphatase activity (mg/(g.h)): Soil acid phosphatase activity Soil
 β-glucosidase activity (μmol/(g.h)): Soil β-glucosidase activity Soil
 catalase activity (mg/(g.h)): Soil catalase activity Soil β-xylosidase
 activity (μmol/(g.h)): Soil β-xylosidase activity Soil
 N-acetyl-β-glucosaminidase activity (μg/(g.h): Soil
 N-acetyl-β-glucosaminidase activity Soil saprophytic fungi diversity: Soil
 saprophytic fungi diversity Resistance to plant pathogens: Resistance to
 plant pathogens **Abiotic variables** Dim.1: Abiotic PCA1 values Dim.2:
 Abiotic PCA1 values Elevation(m): Scaled elevation soil pH: Scaled soil pH
 mean_air temp(℃): Scaled mean air temperature max_air temp (℃): Scaled
 maximum air temperature min_air temp (℃): Scaled minimum air temperature
 mean_soil temp (℃): Scaled mean soil temperature max_soil temp (℃): Scaled
 maximum soil temperature min_soil temp(℃): Scaled minimum soil temperature
 humidity (%): Scaled air humidity soil water content (%): Scaled soil
 water content CV_air temp: Scaled coefficient variation of air temperature
 CV_soil temp: Scaled coefficient variation of soil temperature **Spatial
 information** X: X location Y: Y location