气候变化领域集成服务门户(CCPortal): Coordination of leaf, stem and root traits in determining seedling mortality in a subtropical forest

CCPortal

DOI	10.1016/j.foreco.2019.05.032
	Coordination of leaf, stem and root traits in determining seedling mortality in a subtropical forest
	Shen Y.; Umaña M.N.; Li W.; Fang M.; Chen Y.; Lu H.; Yu S.
发表日期	2019
ISSN	0378-1127
起始页码	285
结束页码	292
卷号	446
英文摘要	Plant traits from different organs are thought to be coordinated to achieve main vital functions. However, evidence on how the coordination of traits affect plant vital rates (e.g. mortality rates) is rare due to the poor representation of root traits, which play important roles in water and soil nutrients uptake. In this study, we collected plant traits from 13,733 seedlings of 57 species across 10-year monitoring in a subtropical forest in Southern China, asking whether traits from root and aboveground organs are coordinated, and whether they have consistent effects on seedling mortality (e.g. all fast resource-acquisitive traits reduce mortality). We performed phylogenetic principal component analysis (PPCA) to test trait coordination and used generalized linear mixed models (GLMMs) to examine trait-mortality relationships. We found that some of the root and aboveground traits were highly correlated. PPCA of traits separated species to the strategy of resource acquisition or conservation, supporting the plant economics spectrum. Traits from root, stem and leaf showed coordinated effects on seeding mortality, in which species with conservative traits tended to have lower mortality rates than species with acquisitive traits. Root traits, such as root nitrogen content, tissue density and specific root length significantly related to seedling mortality. We concluded that traits from different organs were coordinated describing an acquisitive-conservative continuum of strategies and have consistent effects on seedling mortality, providing the first evidence for the plant economics spectrum and for the root trait-mortality relationships in subtropical seedling communities. Our results emphasized that besides aboveground traits, key root traits significantly impact seedling mortality. Integrating root traits is necessary to gain further understanding in the relationships between plant performance and traits. © 2019 Elsevier B.V.
英文关键词	Forest dynamics; Permanent plots; Plant economics spectrum; Plant strategies; Vital rates
语种	英语
scopus关键词	Conservation; Forestry; Principal component analysis; Seed; Tropics; Forest dynamics; Generalized linear mixed models; Permanent plot; Plant economics; Plant strategies; Resource acquisition; Specific root length; Subtropical forests; Population statistics; economic system; forest dynamics; forest soil; mortality; nutrient uptake; plant community; seedling; stem; subtropical region; Conservation; Economics; Forestry; Mortality; Nutrients; Plants; Tropics; China
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155927
作者单位	Department of Ecology, School of Life Sciences/State Key Laboratory of Biocontrol, Sun Yat-sen University, Guangzhou, 510275, China; School of Forestry and Environmental Studies, Yale University, New Haven, CT, United States; Guangdong Ecological Meteorology Center, Guangzhou, 510080, China
推荐引用方式 GB/T 7714	Shen Y.,Umaña M.N.,Li W.,et al. Coordination of leaf, stem and root traits in determining seedling mortality in a subtropical forest[J],2019,446.
APA	Shen Y..,Umaña M.N..,Li W..,Fang M..,Chen Y..,...&Yu S..(2019).Coordination of leaf, stem and root traits in determining seedling mortality in a subtropical forest.Forest Ecology and Management,446.
MLA	Shen Y.,et al."Coordination of leaf, stem and root traits in determining seedling mortality in a subtropical forest".Forest Ecology and Management 446(2019).