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题名: Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales
作者: Fu, Hui1, 2; Yuan, Guixiang1, 3; Zhong, Jiayou2; Cao, Te1; Ni, Leyi1; Xie, Ping1
通讯作者: Ni, LY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China.
关键词: FUNCTIONAL TRAITS ; COMMUNITY ECOLOGY ; AQUATIC PLANT ; WATER DEPTH ; POTAMOGETON-MAACKIANUS ; PHENOTYPIC PLASTICITY ; COASTAL CALIFORNIA ; BIOMASS ALLOCATION ; AMAZONIAN FOREST ; STRATEGY SCHEME
刊名: PLOS ONE
发表日期: 2013-04-23
DOI: 10.1371/journal.pone.0062794
卷: 8, 期:4, 页:e62794
收录类别: SCI
文章类型: Article
部门归属: [Fu, Hui; Yuan, Guixiang; Cao, Te; Ni, Leyi; Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China; [Fu, Hui; Zhong, Jiayou] Jiangxi Inst Water Sci, Nanchang, Peoples R China; [Yuan, Guixiang] Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
WOS标题词: Science & Technology
资助者: National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004]
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Although functional trait variability is increasingly used in community ecology, the scale- and size-dependent aspects of trait variation are usually disregarded. Here we quantified the spatial structure of shoot height, branch length, root/shoot ratio and leaf number in a macrophyte species Potamogeton maackianus, and then disentangled the environmental and ontogenetic effects on these traits. Using a hierarchical nested design, we measured the four traits from 681 individuals across five ecological scales: lake, transect, depth stratus, quadrat and individual. A notable high trait variation (coefficient variation: 48-112%) was observed within species. These traits differed in the spatial structure, depending on environmental factors of different scales. Shoot height and branch length were most responsive to lake, transect and depth stratus scales, while root/shoot ratio and leaf number to quadrat and individual scales. The trait variations caused by environment are nearly three times higher than that caused by ontogeny, with ontogenetic variance ranging from 21% (leaf number) to 33% (branch length) of total variance. Remarkably, these traits showed non-negligible ontogenetic variation (0-60%) in each ecological scale, and significant shifts in allometric trajectories at lake and depth stratus scales. Our results highlight that environmental filtering processes can sort individuals within species with traits values adaptive to environmental changes and ontogenetic variation of functional traits was non-negligible across the five ecological scales.
英文摘要: Although functional trait variability is increasingly used in community ecology, the scale- and size-dependent aspects of trait variation are usually disregarded. Here we quantified the spatial structure of shoot height, branch length, root/shoot ratio and leaf number in a macrophyte species Potamogeton maackianus, and then disentangled the environmental and ontogenetic effects on these traits. Using a hierarchical nested design, we measured the four traits from 681 individuals across five ecological scales: lake, transect, depth stratus, quadrat and individual. A notable high trait variation (coefficient variation: 48-112%) was observed within species. These traits differed in the spatial structure, depending on environmental factors of different scales. Shoot height and branch length were most responsive to lake, transect and depth stratus scales, while root/shoot ratio and leaf number to quadrat and individual scales. The trait variations caused by environment are nearly three times higher than that caused by ontogeny, with ontogenetic variance ranging from 21% (leaf number) to 33% (branch length) of total variance. Remarkably, these traits showed non-negligible ontogenetic variation (0-60%) in each ecological scale, and significant shifts in allometric trajectories at lake and depth stratus scales. Our results highlight that environmental filtering processes can sort individuals within species with traits values adaptive to environmental changes and ontogenetic variation of functional traits was non-negligible across the five ecological scales.
关键词[WOS]: FUNCTIONAL TRAITS ; COMMUNITY ECOLOGY ; AQUATIC PLANT ; WATER DEPTH ; POTAMOGETON-MAACKIANUS ; PHENOTYPIC PLASTICITY ; COASTAL CALIFORNIA ; BIOMASS ALLOCATION ; AMAZONIAN FOREST ; STRATEGY SCHEME
语种: 英语
WOS记录号: WOS:000318008400220
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19287
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China
2.Jiangxi Inst Water Sci, Nanchang, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
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