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题名: An alternative mechanism for shade adaptation: implication of allometric responses of three submersed macrophytes to water depth
作者: Fu, Hui1, 2; Yuan, Guixiang1; Cao, Te1; Ni, Leyi1; Zhang, Meng1; Wang, Shengrui3
通讯作者: Cao, T (reprint author), Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Donghu S Rd 7, Wuhan 430072, Peoples R China.
关键词: Allometry ; Biomass allocation ; Submersed macrophyte ; Water depth
刊名: ECOLOGICAL RESEARCH
发表日期: 2012-11-01
DOI: 10.1007/s11284-012-0991-z
卷: 27, 期:6, 页:1087-1094
收录类别: SCI
文章类型: Article
部门归属: [Fu, Hui; Yuan, Guixiang; Cao, Te; Ni, Leyi; Zhang, Meng] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Fu, Hui] Jiangxi Inst Water Sci, Nanchang 330029, Peoples R China; [Wang, Shengrui] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R ChinaAcad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Fu, Hui] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National High Technology Research and Development Program of China [2008ZX07105-005]; National Basic Research Program of China [2008CB418105]
类目[WOS]: Ecology
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Allometric scaling models describing size-dependent biological relationships are important for understanding the adaptive responses of plants to environmental variation. In this study, allometric analysis was used to investigate the biomass allocation and morphology of three submerged macrophytes (Potamogeton maackianus, Potamogeton malaianus and Vallisneria natans) in response to water depth (1.0 and 2.5 m) in an in situ experiment. The three macrophytes exhibited different allometric strategies associated with distinct adjustments in morphology and biomass allocation in response to varying water depths. In deeper water, after accounting for the effects of plant size, P. maackianus and P. malaianus tended to enhance light harvesting by allocating more biomass to the stem, increasing shoot height and specific leaf area. V. natans tended to allocate more biomass to the leaf than to the basal stem (rosette), showing a higher leaf mass ratio and shoot height in deeper water. The three species decreased biomass allocation to roots as water depth increased. The main effect of water depth treatments was reduced light availability, which induced plastic shoot or leaf elongation. This shows that macrophytes have evolved responses to light limitation similar to those of terrestrial plants.
英文摘要: Allometric scaling models describing size-dependent biological relationships are important for understanding the adaptive responses of plants to environmental variation. In this study, allometric analysis was used to investigate the biomass allocation and morphology of three submerged macrophytes (Potamogeton maackianus, Potamogeton malaianus and Vallisneria natans) in response to water depth (1.0 and 2.5 m) in an in situ experiment. The three macrophytes exhibited different allometric strategies associated with distinct adjustments in morphology and biomass allocation in response to varying water depths. In deeper water, after accounting for the effects of plant size, P. maackianus and P. malaianus tended to enhance light harvesting by allocating more biomass to the stem, increasing shoot height and specific leaf area. V. natans tended to allocate more biomass to the leaf than to the basal stem (rosette), showing a higher leaf mass ratio and shoot height in deeper water. The three species decreased biomass allocation to roots as water depth increased. The main effect of water depth treatments was reduced light availability, which induced plastic shoot or leaf elongation. This shows that macrophytes have evolved responses to light limitation similar to those of terrestrial plants.
关键词[WOS]: PLANT COMMUNITY STRUCTURE ; BIOMASS ALLOCATION ; VALLISNERIA-AMERICANA ; AQUATIC MACROPHYTES ; LIGHT REQUIREMENTS ; GROWTH ; PLASTICITY ; AVOIDANCE ; TOLERANCE ; NUTRIENTS
语种: 英语
WOS记录号: WOS:000312369300011
ISSN号: 0912-3814
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19302
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, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Jiangxi Inst Water Sci, Nanchang 330029, Peoples R China
3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
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