Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering

doi:10.3389/fpls.2018.01854

IMR OpenIR

	Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering
	Liu, Bo 1,2; Chen, Han Y. H.2,3; Yang, Jian 4
通讯作者	Yang, Jian(jian.yang@uky.edu)
	2018-12-12
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	9 页码:12
摘要	Understory vegetation accounts for the majority of plant species diversity and serves as a driver of overstory succession and nutrient cycling in boreal forest ecosystems. However, investigations of the underlying assembly processes of understory vegetation associated with stand development following a wildfire disturbance are rare, particularly in Eurasian boreal forests. In this study, we measured the phylogenetic and functional diversity and trait dispersions of understory communities and tested how these patterns changed with stand age in the Great Xing'an Mountains of Northeastern China. Contrary to our expectation, we found that understory functional traits were phylogenetically convergent. We found that random patterns of phylogenetic, functional, and trait dispersions were dominant for most of our surveyed plots, indicating that stochastic processes may play a crucial role in the determination of understory community assembly. Yet, there was an evidence that understory community assembly was also determined by competitive exclusion and environmental filtering to a certain degree, which was demonstrated by the observed clustered phylogenetic and functional patterns in some plots. Our results showed that phylogenetic diversity significantly decreased, while functional diversity increased with stand age. The observed shift trends in phylogenetic and functional patterns between random to clustering along with stand age, which suggested that understory community assembly shifted from stochasticity to competitive exclusion and environmental filtering. Our study presented a difference to community assembly and species coexistence theories insisted solely on deterministic processes. These findings indicated that Eurasian boreal understory communities may be primarily regulated by stochastic processes, providing complementary evidence that stochastic processes are crucial in the determination of community assembly both in tropical and boreal forests.
关键词	chronosequence community assembly environmental filtering functional diversity trait conservatism trait dispersion phylogenetic diversity overdispersion
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team
DOI	10.3389/fpls.2018.01854
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0604403] ; National Natural Science Foundation of China[31270511] ; National Natural Science Foundation of China[41501200] ; CAS Interdisciplinary Innovation Team
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000453064800001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/130779
专题	中国科学院金属研究所
通讯作者	Yang, Jian
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China 2.Lakehead Univ, Fac Nat Resources Management, Thunder Bay, ON, Canada 3.Fujian Normal Univ, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou, Fujian, Peoples R China 4.Univ Kentucky, Dept Forestry & Nat Resources, Lexington, KY 40506 USA
推荐引用方式 GB/T 7714	Liu, Bo,Chen, Han Y. H.,Yang, Jian. Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering[J]. FRONTIERS IN PLANT SCIENCE,2018,9:12.
APA	Liu, Bo,Chen, Han Y. H.,&Yang, Jian.(2018).Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering.FRONTIERS IN PLANT SCIENCE,9,12.
MLA	Liu, Bo,et al."Understory Community Assembly Following Wildfire in Boreal Forests: Shift From Stochasticity to Competitive Exclusion and Environmental Filtering".FRONTIERS IN PLANT SCIENCE 9(2018):12.