Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales

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	Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales
	Fu, Hui 1,2; Yuan, Guixiang 1,3; Zhong, Jiayou 2; Cao, Te 1; Ni, Leyi 1; Xie, Ping 1
刊名	PLOS ONE
	2013-04-23
卷号	8 期号:4 页码:e62794
关键词	FUNCTIONAL TRAITS COMMUNITY ECOLOGY AQUATIC PLANT WATER DEPTH POTAMOGETON-MAACKIANUS PHENOTYPIC PLASTICITY COASTAL CALIFORNIA BIOMASS ALLOCATION AMAZONIAN FOREST STRATEGY SCHEME
ISSN号	1932-6203
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.
中文摘要	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.
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.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	FUNCTIONAL TRAITS ; COMMUNITY ECOLOGY ; AQUATIC PLANT ; WATER DEPTH ; POTAMOGETON-MAACKIANUS ; PHENOTYPIC PLASTICITY ; COASTAL CALIFORNIA ; BIOMASS ALLOCATION ; AMAZONIAN FOREST ; STRATEGY SCHEME
收录类别	SCI
资助信息	National Science Foundation of China [31270508, 41230853]; National High Technology Research and Development Program of China [2012ZX07105-004]
语种	英语
WOS记录号	WOS:000318008400220
公开日期	2013-10-31
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/19287]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Fu, Hui,Yuan, Guixiang,Zhong, Jiayou,et al. Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales[J]. PLOS ONE,2013,8(4):e62794.
APA	Fu, Hui,Yuan, Guixiang,Zhong, Jiayou,Cao, Te,Ni, Leyi,&Xie, Ping.(2013).Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales.PLOS ONE,8(4),e62794.
MLA	Fu, Hui,et al."Environmental and Ontogenetic Effects on Intraspecific Trait Variation of a Macrophyte Species across Five Ecological Scales".PLOS ONE 8.4(2013):e62794.