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Strong restrictions on the trait range of co-occurring species in the newly created riparian zone of the Three Gorges Reservoir Area, China
Zhang, Aiying1; Cornwell, Will2; Li, Zhaojia3; Xiong, Gaoming; Fan, Dayong; Xie, Zongqiang1
2019
发表期刊JOURNAL OF PLANT ECOLOGY
ISSN1752-9921
卷号12期号:5页码:825-833
摘要Aims Community assembly links plant traits to particular environmental conditions. Numerous studies have adopted a trait-based approach to understand both community assembly processes and changes in plant functional traits along environmental gradients. In most cases these are long-established, natural or semi-natural environments. However, increasingly human activity has created, and continues to create, a range of new environmental conditions, and understanding community assembly in these 'novel environments' will be increasingly important. Methods Built in 2006, the Three Gorges Dam, largest hydraulic project in China, created a new riparian area of 384 km(2), with massively altered hydrology. This large, newly created ecosystem is an ideal platform for understanding community assembly in a novel environment. We sampled environment variables and plant communities within 103 plots located in both the reservoir riparian zone (RRZ) and adjacent non-flooded and semi-natural upland (Upland) at the Three Gorges Reservoir Area. We measured six traits from 168 plant species in order to calculate community-level distribution of trait values. We expected that the altered hydrology in RRZ would have a profound effect on the community assembly process for the local plants. Important Findings Consistent with previous work on community assembly, the distribution of trait values (range, variance, kurtosis and the standard deviation of the distribution neighbor distances) within all plots was significantly lower than those from random distributions, indicating that both habitat filtering and limiting similarity simultaneously shaped the distributions of traits and the assembly of plant communities. Considering the newly created RRZ relative to nearby sites, community assembly was different in two main ways. First, there was a large shift in the mean trait values. Compared to Upland communities, plant communities in the RRZ had higher mean specific leaf area (SLA), higher nitrogen per unit leaf mass (N-mass), and lower maximum height (MH). Second, in the RRZ compared to the Upland, for the percentage of individual plots whose characteristic of trait values was lower than null distributions, the reductions in the communitylevel range for SLA, N-mass, nitrogen per unit leaf area (N-area) and phosphorus per unit leaf area (P-area) were much larger, suggesting that the habitat filter in this newly created riparian zone was much stronger compared to longer established semi-natural upland vegetation. This stronger filter, and the restriction to a subset of plants with very similar trait values, has implications for predicting riparian ecosystems' responses to the hydrological alterations and further understanding for human's effect on plant diversity and plant floras.
关键词flood-dry-flood neighbor distance novel ecosystem specific leaf area trait-based approach
学科领域Plant Sciences ; Ecology ; Forestry
DOI10.1093/jpe/rtz016
收录类别SCI
语种英语
WOS关键词FUNCTIONAL TRAITS ; LIMITING SIMILARITY ; PLANT TRAITS ; VEGETATION ; DIVERSITY ; ECOLOGY ; RIVER ; COEXISTENCE ; COMPETITION ; MECHANISMS
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS记录号WOS:000491991000004
出版者OXFORD UNIV PRESS
文献子类Article
出版地OXFORD
EISSN1752-993X
资助机构Chinese Academy of SciencesChinese Academy of Sciences [KZCX2-XB3-09]
作者邮箱xie@ibcas.ac.cn
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/19868
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Univ New South Wales, Ecol & Evolut Res Ctr, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia
4.Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China
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Zhang, Aiying,Cornwell, Will,Li, Zhaojia,et al. Strong restrictions on the trait range of co-occurring species in the newly created riparian zone of the Three Gorges Reservoir Area, China[J]. JOURNAL OF PLANT ECOLOGY,2019,12(5):825-833.
APA Zhang, Aiying,Cornwell, Will,Li, Zhaojia,Xiong, Gaoming,Fan, Dayong,&Xie, Zongqiang.(2019).Strong restrictions on the trait range of co-occurring species in the newly created riparian zone of the Three Gorges Reservoir Area, China.JOURNAL OF PLANT ECOLOGY,12(5),825-833.
MLA Zhang, Aiying,et al."Strong restrictions on the trait range of co-occurring species in the newly created riparian zone of the Three Gorges Reservoir Area, China".JOURNAL OF PLANT ECOLOGY 12.5(2019):825-833.
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