中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Obligate to facultative shift of two epiphytic Lepisorus species during subtropical forest degradation: Insights from functional traits

文献类型:期刊论文

作者Chen, Quan1; Lu, Hua-Zheng; Liu, Wen-Yao; Wu, Yi1; Song, Liang; Li, Su
刊名FOREST ECOLOGY AND MANAGEMENT
出版日期2019
卷号435期号:x页码:66-76
ISSN号0378-1127
关键词Tropical Rain-forest Elevational Gradient Vascular Epiphytes Ailao Mountains Plant Traits Leaf Traits Ferns Canopy Patterns Light
DOI10.1016/j.foreco.2018.12.037
英文摘要

Epiphytic ferns are an important group of plants strongly affected by sudden changes in forest community composition and structure. However, a key gap persists in our understanding of their responses to forest degradation, specifically concerning the changes in species distributions and functional traits and their underlying mechanisms. Here, we investigated the vertical distribution of two Lepisorus species of a subtropical primary forest and its two-stage degraded forests in Southwest China, and measured 18 plant functional traits of individuals growing in terrestrial (i.e., on the ground) and 0.5-2.5 m epiphytic forest habitats. We found that the relative abundance of both species peaked at heights of approximately 8-16 m in the canopy of primary forest but at heights of 0-4 m on tree trunks in two degraded forests. Terrestrial individuals occurred only in secondary forests, and the relative abundance of these two species on lower tree trunk and forest ground increased with canopy openness within degraded forests. Principal component analysis of the epiphytes' functional traits and plasticity provided evidence for two suites of traits related to light acclimation and nutrient strategies. Furthermore, variation in both species' morphological and physiological traits revealed resource use trade-offs in response to forest degradation. Epiphytic individuals in primary forest had higher capacity for light capture while those in secondary forests had a higher photosynthetic capacity and resource-use efficiency. Within the same secondary forest, terrestrial individuals tended to acclimate to a low-light understory and were more efficient in their nutrient use than epiphytic conspecifics. Together, these results showed a shift of two obligate epiphytic ferns to be facultative in secondary forests, and underwent a downward shift in their microhabitat occupancy to lower tree trunks and understory soils in response to forest degradation. They could achieve this shift by adjusting their functional traits at an intraspecific level, which promoted rhizome extensions to find optimal habitats for persistence.

学科主题Forestry
语种英语
WOS记录号WOS:000457950000009
源URL[http://ir.xtbg.org.cn/handle/353005/11191]  
专题西双版纳热带植物园_恢复生态学组
作者单位1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Chen, Quan,Lu, Hua-Zheng,Liu, Wen-Yao,et al. Obligate to facultative shift of two epiphytic Lepisorus species during subtropical forest degradation: Insights from functional traits[J]. FOREST ECOLOGY AND MANAGEMENT,2019,435(x):66-76.
APA Chen, Quan,Lu, Hua-Zheng,Liu, Wen-Yao,Wu, Yi,Song, Liang,&Li, Su.(2019).Obligate to facultative shift of two epiphytic Lepisorus species during subtropical forest degradation: Insights from functional traits.FOREST ECOLOGY AND MANAGEMENT,435(x),66-76.
MLA Chen, Quan,et al."Obligate to facultative shift of two epiphytic Lepisorus species during subtropical forest degradation: Insights from functional traits".FOREST ECOLOGY AND MANAGEMENT 435.x(2019):66-76.

入库方式: OAI收割

来源:西双版纳热带植物园

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