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题名: Morphological responses to water-level fluctuations of two submerged macrophytes, Myriophyllum spicatum and Hydrilla verticillata
作者: Zhang, Xiaoke1, 2; Liu, Xueqin1; Ding, Qingzhang1, 2
通讯作者: Liu, XQ (reprint author), Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China.
关键词: Myriophyllum spicatum ; Hydrilla verticillata ; water-level fluctuations ; water regime ; adaptation
刊名: JOURNAL OF PLANT ECOLOGY
发表日期: 2013-02-01
DOI: 10.1093/jpe/rts009
卷: 6, 期:1, 页:64-70
收录类别: SCI
文章类型: Article
部门归属: [Zhang, Xiaoke ; Liu, Xueqin ; Ding, Qingzhang] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China ; [Zhang, Xiaoke ; Ding, Qingzhang] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [4100117]; Major Science and Technology Program for Water Pollution Control and Treatment of China [2008ZX07103-004]
类目[WOS]: Plant Sciences ; Ecology
研究领域[WOS]: Plant Sciences ; Environmental Sciences & Ecology
摘要: Myriophyllum spicatum and Hydrilla verticillata are common submerged macrophytes in the Yangtze River basin. To investigate their tolerances and adaptations to water-level fluctuations, an experiment was conducted in a pond. We designed five different amplitudes of water-level fluctuations as static, +/- 15, +/- 30, +/- 60 and +/- 90 cm during the 74 days of the experiment. In each amplitude treatment, two cultivation methods were examined as monoculture and mixed culture. The results showed that M. spicatum had greater morphological responses to water-level fluctuations than H. verticillata. Fluctuating amplitude had significant effects on branch number, shoot length and root dry weight (DW) of M. spicatum, whereas it only had significant effect on branch number of H. verticillata. Both fluctuating amplitude and cultivation method had significant effects on total DW of M. spicatum, which was higher in monoculture than mixed culture. The total DW of H. verticillata was affected by fluctuating amplitude only, and the largest biomass was in the amplitude of +/- 30 cm. Fruit DW of M. spicatum was largest in the amplitude of +/- 30 cm, high amplitude of water-level fluctuations would inhibit flowering and seed production. Root DW proportion was significantly affected by fluctuating amplitude and cultivation method in both species, and the root DW proportion of M. spicatum was significantly higher in the amplitude-of +/- 90 cm. We conclude that moderate amplitude of water-level fluctuations can promote the distribution and growth of both species, and in order to accelerate the restoration of both species in natural habitats, the optimum amplitude should be keep at +/- 15 to +/- 30 cm.
英文摘要: Myriophyllum spicatum and Hydrilla verticillata are common submerged macrophytes in the Yangtze River basin. To investigate their tolerances and adaptations to water-level fluctuations, an experiment was conducted in a pond.
关键词[WOS]: VALLISNERIA-AMERICANA ; PHENOTYPIC PLASTICITY ; PHRAGMITES-AUSTRALIS ; BIOMASS ALLOCATION ; LAKE OKEECHOBEE ; GROWTH ; DEPTH ; TRANSPLANTS ; COMPETITION ; WETLANDS
语种: 英语
WOS记录号: WOS:000314709400008
ISSN号: 1752-9921
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19292
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, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Zhang, XK; Liu, XQ; Ding, QZ.Morphological responses to water-level fluctuations of two submerged macrophytes, Myriophyllum spicatum and Hydrilla verticillata,JOURNAL OF PLANT ECOLOGY,2013,6(1):64-70
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