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题名: Effect of substrate grain size on the growth and morphology of the submersed macrophyte Vallisneria natans L.
作者: Li, Z. Q.1; Kong, L. Y.1; Yang, L. F.1; Zhang, M.3; Cao, T.3; Xu, J.3; Wang, Z. X.1; Lei, Y.2
通讯作者: Wang, ZX (reprint author), Hubei Univ, Coll Resources & Environm, Wuhan 430062, Peoples R China
关键词: Growth substrate ; Grain size ; Physical properties ; Submersed macrophyte ; Succession
刊名: LIMNOLOGICA
发表日期: 2012-02-01
DOI: 10.1016/j.limno.2011.09.003
卷: 42, 期:1, 页:81-85
收录类别: SCI
文章类型: Article
部门归属: [Li, Z. Q.; Kong, L. Y.; Yang, L. F.; Wang, Z. X.] Hubei Univ, Coll Resources & Environm, Wuhan 430062, Peoples R China; [Lei, Y.] Huazhong Normal Univ, Coll Life Sci, Wuhan, Peoples R China; [Zhang, M.; Cao, T.; Xu, J.] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Expt Stn Lake Ecosyst, Beijing 100864, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China[30870260, 30770396, 40971028]; Excellent Youth Foundation of Hubei Scientific Committee
类目[WOS]: Limnology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Experiments were conducted to investigate the growth and morphology of the submersed macrophyte Vallisneria natans in relation to seven substrate types. The study also aims to evaluate the influence of the grain size of the aquatic substrate on the submersed macrophyte. The results show that growth, morphology and biomass accumulation of V. natans were significantly affected by the physical properties of the growth substrate. Compared with V. natans grown in pebble and gravel substrates, V. natans grown in silt and clay substrates had greater height, more ramets and leaves, as well as greater biomass accumulation. No significant differences in biomass allocation patterns were found among the different experimental treatments. The total porosity and dry bulk density of the growth substrate strongly influence plant traits. Substantial positive correlations were observed between total porosity and height and total biomass. Also, negative correlations were observed between dry bulk density and height, number of ramets, total biomass and lacunal volume. These results indicate that at high concentrations of water-column nutrients, V. natans responds to different physical properties of the growth substrate by changing growth and biomass accumulation strategies, rather than by changing biomass allocation patterns. Compared with V. natans grown in substrates with larger grain sizes, V. natans appeared well-adapted to substrates with smaller grain sizes. Thus, the physical properties of the growth substrate could be important in determining submersed macrophyte colonization and distribution in shallow eutrophic lakes. This information may be useful in managing shallow eutrophic lakes wherein rooted submersed macrophytes are declining. (C) 2011 Elsevier GmbH. All rights reserved.
英文摘要: Experiments were conducted to investigate the growth and morphology of the submersed macrophyte Vallisneria natans in relation to seven substrate types. The study also aims to evaluate the influence of the grain size of the aquatic substrate on the submersed macrophyte. The results show that growth, morphology and biomass accumulation of V. natans were significantly affected by the physical properties of the growth substrate. Compared with V. natans grown in pebble and gravel substrates, V. natans grown in silt and clay substrates had greater height, more ramets and leaves, as well as greater biomass accumulation. No significant differences in biomass allocation patterns were found among the different experimental treatments. The total porosity and dry bulk density of the growth substrate strongly influence plant traits. Substantial positive correlations were observed between total porosity and height and total biomass. Also, negative correlations were observed between dry bulk density and height, number of ramets, total biomass and lacunal volume. These results indicate that at high concentrations of water-column nutrients, V. natans responds to different physical properties of the growth substrate by changing growth and biomass accumulation strategies, rather than by changing biomass allocation patterns. Compared with V. natans grown in substrates with larger grain sizes, V. natans appeared well-adapted to substrates with smaller grain sizes. Thus, the physical properties of the growth substrate could be important in determining submersed macrophyte colonization and distribution in shallow eutrophic lakes. This information may be useful in managing shallow eutrophic lakes wherein rooted submersed macrophytes are declining. (C) 2011 Elsevier GmbH. All rights reserved.
关键词[WOS]: LITTORELLA-UNIFLORA ; AQUATIC VEGETATION ; ORGANIC-MATTER ; SEDIMENT ; SOIL ; QUALITY ; BIOMASS ; PLANT
语种: 英语
WOS记录号: WOS:000298779100010
ISSN号: 0075-9511
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16725
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.Hubei Univ, Coll Resources & Environm, Wuhan 430062, Peoples R China
2.Huazhong Normal Univ, Coll Life Sci, Wuhan, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Expt Stn Lake Ecosyst, Beijing 100864, Peoples R China

Recommended Citation:
Li, Z. Q.; Kong, L. Y.; Yang, L. F.; Zhang, M.; Cao, T.; Xu, J.; Wang, Z. X.; Lei, Y..Effect of substrate grain size on the growth and morphology of the submersed macrophyte Vallisneria natans L.,LIMNOLOGICA,2012,42(1):81-85
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