74 Works

Grazing changes the direction of direct effect of shrubs on nematode communities but suppresses indirect effects through microbial pathways

Hanwen Cui, Ziyang Liu, Jingwei Chen, Jiajia Wang, Hongxian Song, Sa Xiao, Xiaoli Yang, Xiangtai Wang, Yajun Wang, Xi Kou, Lihua Meng, Kun Liu, Shuyan Chen, Lizhe An & Uffe Nielsen
Abstract It is well established that dominant plants shape belowground communities, which in turn influence ecosystem functioning. Similarly, herbivores affect belowground communities through physical disturbance and redistribution of organic inputs, but also through their interactions with the plants themselves. However, we know little about how grazing moderates effects of dominant plants on belowground organisms. We established a three-year removal experiment in a grazed and an ungrazed alpine meadow on the Qinghai-Tibet plateau to explore how...

Data from: Nitrogen enrichment and warming shift community functional composition via distinct mechanisms: the role of intraspecific trait variability and species turnover

Xiaoyi Wang, Xuebin Yan, Kailing Huang, Xi Luo, Yuanyuan Zhang, Luyao Zhou, Fei Yang, Xiaohong Xu, Xianhui Zhou, Kechang Niu & Hui Guo
1. Global change factors may shift community functional composition by driving species turnover (species occurrence and species relative abundance) and intraspecific trait variability. However, their relative contribution in determining the functional response of community to global change, especially nitrogen enrichment and warming, remains unclear. 2. We conducted a fully factorial field experiment in a Tibetan alpine meadow to examine responses of plant community functional composition to nitrogen enrichment and warming by quantifying seven plant functional...

Foliar fungal pathogens along an elevation gradient in Tibetan alpine meadow

Xiang Liu
Foliar fungal diseases have a great influence on both photosynthesis and ecosystem function. However, information on how the elevation gradient (which is one of the most important biogeographic factors) affects foliar fungal diseases is scarce. Here, we did an investigation along 3200 m ~ 4000 m in an alpine meadow and arranged 30 quadrats collecting data of foliar fungal diseases, plant composition and soil properties to study the plant community-mediated (through changes in plant biomass,...

Codes for simulation and data for: The relationship between local and regional extinction rates depends on species distribution patterns

Chuan Yan, Fangliang He, Jinxing He & Zhibin Zhang
The rapid loss of biodiversity poses a great threat to ecosystem functions and services. Credible estimation of species extinction rates is essential for understanding the magnitude of biodiversity loss and for informing conservation, but this has been a challenge because estimated extinctions are unverifiable due to the lack of data. In this study, we investigated the relationship between local and regional extinctions and assessed the effects of range size, spatial segregation, and patchiness of species...

Data from: Reticulate evolution within a spruce (Picea) species complex revealed by population genomic analysis

Yongshuai Sun, Richard J. Abbott, Zhiqiang Lu, Kangshan Mao, Lei Zhang, Xiaojuan Wang, Dafu Ru & Jianquan Liu
The role of reticulation in the rapid diversification of organisms is attracting greater attention in evolutionary biology. Here, we report a population genomics approach to test the role of hybridization and introgression in the evolution of the Picea likiangensis species complex. Based on 84,793 SNPs detected in transcriptomes of 82 trees collected from 35 localities, we identified 18 hybrids (including backcrosses) distributed within the range boundaries of the four taxa. Coalescent simulations, for each pair...

Data from: Forward genetic screening for regulators involved in cholesterol synthesis using validation-based insertional mutagenesis

Wei Jiang, Jing-Jie Tang, Hong-Hua Miao, Yu-Xiu Qu, Jie Qin, Jie Xu, Jinbo Yang, Bo-Liang Li & Bao-Liang Song
Somatic cell genetics is a powerful approach for unraveling the regulatory mechanism of cholesterol metabolism. However, it is difficult to identify the mutant gene(s) due to cells are usually mutagenized chemically or physically. To identify important genes controlling cholesterol biosynthesis, an unbiased forward genetics approach named validation-based insertional mutagenesis (VBIM) system was used to isolate and characterize the 25-hydroxycholesterol (25-HC)-resistant and SR-12813-resisitant mutants. Here we report that five mutant cell lines were isolated. Among which,...

Data from: Phenotypic effects of the nurse Thylacospermum caespitosum on dependent plant species along regional climate stress gradients

Xingpei Jiang, Richard Michalet, Shuyan Chen, Liang Zhao, Xiangtai Wang, Chenyue Wang, Lizhe An & Sa Xiao
Contrasting phenotypes of alpine cushion species have been recurrently described in several mountain ranges along small-scale topography gradients, with tight competitive phenotypes in stressful convex topography and loose facilitative phenotypes in sheltered concave topography. The consistency of phenotypic effects along large-scale climate stress gradients have been proposed as a test of the likely genetic bases of the differences observed at small-scale. Inversely, plastic phenotypic effects are more likely to vanish at some points along climate...

Data from: Integrating spatial structure and interspecific and intraspecific plant–soil feedback effects and responses into community structure

Sa Xiao, Dan Z. Atwater & Ragan M. Callaway
Plant-soil feedbacks have important effects on plant communities, but most theory has been derived from experiments on intraspecific plant-soil feedbacks. Much less is known about how interspecific plant-soil feedbacks affect coexistence and plant communities, due in part to experimental and analytical challenges. Here, we propose a framework for evaluating plant-soil feedbacks among multiple interacting species that incorporates 1) the average effect each species has on conspecific and heterospecific neighbors via how they modify soil biota,...

Data from: Species divergence and maintenance of species cohesion of three closely related Primula species in the Qinghai-Tibet Plateau

Guangpeng Ren, Rubén G. Mateo, Antoine Guisan, Elena Conti & Nicolas Salamin
Aim: Understanding the relative roles of geography and ecology in driving speciation, population divergence and maintenance of species cohesion is of great interest to molecular ecology. Closely related species that are parapatrically distributed in mountainous areas provide an ideal model to evaluate these key issues, especially when genomic data are analyzed within a spatially and ecologically explicit context. Here we used three closely related species of Primula that occur in the Himalayas, the Hengduan Mountains...

Data from: Plantings accelerate restoration of tropical forest but assembly mechanisms appear insensitive to initial composition

Lanping Li, Marc W. Cadotte, Cristina Martínez-Garza, Marinés De La Peña-Domene & Guozhen Du
1. Phylogenetic and trait-based approaches to community ecology are increasingly being used to test for nonrandom community assembly and are now being applied to assessments of habitat restoration. A critical question for the restoration of tropical forests is how plantings influence the recruitment of new species, and specifically the phylogenetic and functional diversity of restored habitats. 2. We examined 8 years (2006-2014) of tropical forest recruitment in two restoration planting compositions (12 animal-dispersed and 12...

Data from: Climatic adaptation and ecological divergence between two closely related pine species in Southeast China

Yongfeng Zhou, Lirui Zhang, Jianquan Liu, Guili Wu & Outi Savolainen
Climatic selection contributes greatly to local adaptation and intraspecific differentiation, but this kind of selection could have also promoted interspecific divergence through ecological speciation. In this study, we examined genetic variation within and between two closely related pine species, Pinus massoniana and Pinus hwangshanensis. These two species occur in Southeast China and exhibit contrasting ecological preferences, although hybrids are formed where their distributions overlap. We sampled 26 populations of the two species across their distributional...

Data from: SRUD: a simple non-destructive method for accurate quantification of plant diversity dynamics

Pengfei Zhang, George A. Kowalchuk, Merel B. Soons, Mariet M. Hefting, Chengjin Chu, Jennifer Firn, Cynthia S. Brown, Xianhui Zhou, Xiaolong Zhou, Zhi Guo, Zhigang Zhao, Guozhen Du & Yann Hautier
1. Predicting changes in plant diversity in response to human activities represents one of the major challenges facing ecologists and land managers striving for sustainable ecosystem management. Classical field studies have emphasized the importance of community primary productivity in regulating changes in plant species richness. However, experimental studies have yielded inconsistent empirical evidence, suggesting that primary productivity is not the sole determinant of plant diversity. Recent work has shown that more accurate predictions of changes...

Data from: Chasing ghosts: allopolyploid origin of Oxyria sinensis (Polygonaceae) from its only diploid congener and an unknown ancestor

Xin Luo, Quanjun Hu, Pingping Zhou, Dan Zhang, Qian Wang, Richard J. Abbott, Yaling Wang & Jianquan Liu
Reconstructing the origin of a polyploid species is particularly challenging when an ancestor has become extinct. Under such circumstances, the extinct donor of a genome found in the polyploid may be treated as a ‘ghost’ species in that its prior existence is recognized through the presence of its genome in the polyploid. In this study, we aimed to determine the polyploid origin of Oxyria sinensis (2n = 40) for which only one congeneric species is...

Data from: Speciation of two desert poplar species triggered by Pleistocene climatic oscillations

Juan Wang, Thomas Källman, Jianquan Liu, Qiuhong Guo, Yuxia Wu, Kao Lin & Martin Lascoux
Despite the evidence that the Pleistocene climatic fluctuations have seriously affected the distribution of intraspecific diversity, less is known on its impact on interspecific divergence. In this study, we aimed to test the hypothesis that the divergence of two desert poplar species Populus euphratica Oliv. and P. pruinosa Schrenk. occurred during the Pleistocene. We sequenced 11 nuclear loci in 60 individuals from the two species to estimate the divergence time between them and to test...

Data from: Habitat filtering determines the functional niche occupancy of plant communities worldwide

Yuanzhi Li, Bill Shipley, Jodi N. Price, Vinícius De L. Dantas, Riin Tamme, Mark Westoby, Andrew Siefert, Brandon S. Schamp, Marko J. Spasojevic, Vincent Jung, Daniel C. Laughlin, Sarah J. Richardson, Yoann Le Bagousse-Pinguet, Christian Schöb, Antonio Gazol, Honor C. Prentice, Nicolas Gross, Jacob Overton, Marcus V. Cianciaruso, Frédérique Louault, Chiho Kamiyama, Tohru Nakashizuka, Kouki Hikosaka, Takehiro Sasaki, Masatoshi Katabuchi … & Marco A. Batalha
How the patterns of niche occupancy vary from species-poor to species-rich communities is a fundamental question in ecology that has a central bearing on the processes that drive patterns of biodiversity. As species richness increases, habitat filtering should constrain the expansion of total niche volume, while limiting similarity should restrict the degree of niche overlap between species. Here, by explicitly incorporating intraspecific trait variability, we investigate the relationship between functional niche occupancy and species richness...

Data from: Kinship underlies costly cooperation in Mosuo villages

Matthew Gwynfryn Thomas, Ting Ji, JiaJia Wu, Qiao-Qiao He, Yi Tao, Ruth Mace & QiaoQiao He
The relative importance of social evolution theories such as kin selection, direct reciprocity and needs-based transfers in explaining real-world cooperation is the source of much debate. Previous field studies of cooperation in human communities have revealed variability in the extent to which each of these theories drive human sociality in different contexts. We conducted multivariate social network analyses predicting costly cooperation—labouring on another household’s farm—in 128,082 dyads of Mosuo farming households in southwest China. Through...

Data from: How do soil microorganisms respond to N, P and NP additions? Application of the ecological framework of (co‐)limitation by multiple resources

Beibei Ma, Xiaolong Zhou, Qi Zhang, Mingsen Qin, Linggang Hu, Kena Yang, Zhen Xie, Wenbin Ma, Beibei Chen, Huyuan Feng, Yongjun Liu, Guozhen Du, Xiaojun Ma & Xavier Le Roux
1.Nitrogen, N, and phosphorus, P, often limit biological processes in terrestrial ecosystems. Based on previous studies mainly focusing on plants, the concept of resource limitation has evolved towards a theory of (co)limitations by multiple‐resources. However, this ecological framework has not been applied to analyse how soil microorganisms and plants concurrently respond to N and/or P addition, and whether these responses are constrained by phylogenetic relatedness. 2.Here, we applied this framework to analyse microbial and plant...

Niche conservatism limits the distribution of Medicago in the tropics

Yingbo Yang, Zhenghan Bian, Guangpeng Ren, Jianquan Liu & Nawal Shrestha
The increase in species number from poles to the equator is one of the most fundamental patterns in ecology. Although several hypotheses have been proposed, there is a lack of consensus on the mechanisms underlying this pattern. While most hypotheses provide plausible explanation for high tropical diversity of tropical clades, it is unclear if similar mechanisms drive the diversity of extra-tropical clades. Here, we investigated the environmental drivers influencing the diversity pattern of a Mediterranean...

Monks relax sibling competition over parental resources in Tibetan populations

Liqiong Zhou, Erhao Ge, Alberto Micheletti, Yuan Chen, Juan Du & Ruth Mace
Why parents in some societies induce some of their sons to become religious celibates is an evolutionary puzzle. Some have speculated that this might be associated with brother competition for family resources. However, the behavioral ecology of monks and the possible links with competition between brothers remains unexplored. Here, we use demographic data from Amdo Tibetan agropastoralists in western China to evaluate what factors determine the probability of becoming a monk and explore the possible...

Wind Tunnel Measurements of Aerodynamic Entrainment Rate of Particles

Guang Li, Jie Zhang & Ning Huang
This dataset is related to a wind tunnel experiment of aerodynamic entrainment rate of particles. Wind profiles are measured by pitot tube, for calibrating surface shear stress measured by Irwin sensors. Aerodynamic entrainment rate is measured through the mass difference weighting before and after the erosion event. Each case is repeated three times to find the average value and the error. The experimental setup is showed in figure 1.

Cellulose nanocrystals/graphene oxide composite for the adsorption and removal of levofloxacin hydrochloride antibiotic from aqueous solution

Junhong Tao, Jie Yang, Chengxiao Ma, Junfeng Li, Keqing Du, Zhen Wei, Cuizhong Chen, Zhaoyang Wang, Chun Zhao & Xiaoya Deng
Residual antibiotics in water are often persistent organic pollutants. The purpose of this study was to prepare a cellulose nanocrystals/graphene oxide composite (CNCs-GO) with a three-dimensional structure for the removal of the antibiotic levofloxacin hydrochloride (Levo-HCl) in water by adsorption. The Scanning Electron Microscope (SEM), Fourier Transform Infrared (FT-IR), Energy dispersive spectroscopy (EDS), X-ray Photoelectron Spectroscopy (XPS) and other characterization methods were used to study the physical structure and chemical properties of the CNCs-GO. The...

Input files of various genomic analyses used to unravel the domestication history of Cannabis

Guangpeng Ren & Luca Fumagalli
Cannabis sativa has long been an important source of fiber extracted from hemp and both medicinal and recreational drugs based on cannabinoid compounds. Here, we investigated its poorly known domestication history using whole-genome resequencing of 110 accessions from worldwide origins. We show that C. sativa was first domesticated in early Neolithic times in East Asia and that all current hemp and drug cultivars diverged from an ancestral gene pool currently represented by feral plants and...

Intra- and interspecific variability of specific leaf area mitigate the reduction of community stability in response to warming and nitrogen addition

Mengjiao Huang, Shaopeng Wang, Xiang Liu, Ming Nie, Shurong Zhou & Yann Hautier
Global environmental changes are reducing the diversity and affecting the functioning of natural ecosystems as well as their ability to reliably provide ecosystem functions and services to mankind. Many studies have shown that a greater plant diversity can stabilize community productivity against environmental fluctuations. However, most of these studies focused on plant species richness, thus overlooking the potential role of functional traits in stabilizing community productivity against environmental fluctuations. Whether and how functional trait mean...

Impacts of growth form and phylogenetic relatedness on seed germination: a large-scale analysis of a subtropical regional flora

JuHong Wang, GeXi Xu, Chen Wen, YanBo Ma, Wei Qi, ChunHui Zhang & XianLiang Cui
Plant regeneration strategy plays a critical role in species survival and can be used as a proxy for the evolutionary response of species to climate change. However, information on the effects of key plant traits and phylogenetic relatedness on seed germination is limited at large regional scales that vary in climate. To test the hypotheses that phylogenetic niche conservatism plays a critical force in shaping seed ecophysiological traits across species, and also drives their response...

Global quantitative synthesis of effects of biotic and abiotic factors on stemflow production in woody ecosystems

Yafeng Zhang, Xinping Wang, Yanxia Pan, Rui Hu & Ning Chen
Aim: Stemflow has been increasingly recognized as an indispensable component in water and nutrient budgets within vegetated ecosystems. Here we aim to quantify the stemflow percentage (St, %) of incident precipitation (i.e., stemflow production) at a global scale, and to provide a systematic evaluation on how biotic and abiotic factors affect St. Location: Global Time period: 1970 – 2019 Major taxa studied: Woody plants (trees and shrubs) Methods: We compiled a global stemflow dataset from...

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