IHB OpenIR  > 淡水生态学研究中心  > 期刊论文
Effects of high nitrogen concentrations on the growth of submersed macrophytes at moderate phosphorus concentrations
Yu, Qing1,2; Wang, Hong-Zhu1; Li, Yan1,2; Shao, Jian-Chun1,3; Liang, Xiao-Min1; Jeppesen, Erik4,5,6; Wang, Hai-Jun1
Source PublicationWATER RESEARCH
AbstractEutrophication of lakes leading to loss of submersed macrophytes and higher turbidity is a worldwide phenomenon, attributed to excessive loading of phosphorus (P). However, recently, the role of nitrogen (N) for macrophyte recession has received increasing attention. Due to the close relationship between N and P loading, disentanglement of the specific effects of these two nutrients is often difficult, and some controversy still exists as to the effects of N. We studied the effects of N on submersed macrophytes represented by Vallisneria natans (Lour.) Hara in pots positioned at three depths (0.4 m, 0.8 m, and 1.2 m to form a gradient of underwater light conditions) in 10 large ponds having moderate concentrations of P (TP 0.03 +/- 0.04 mg L-1) and five targeted concentrations of total nitrogen (TN) (0.5, 2, 10, 20, and 100 mg L-1), there were two ponds for each treatment. To study the potential shading effects of other primary producers, we also measured the biomass of phytoplankton (Chlap(hyt)) and periphyton (Chla(peri)) expressed as chlorophyll a. We found that leaf length, leaf mass, and root length of macrophytes declined with increasing concentrations of TN and ammonium, while shoot number and root mass did not. All the measured growth indices of macrophytes declined significantly with Chla(phyt), while none were significantly related to Chla(peri). Neither Chla(phyt) nor Chlaped were, however, significantly negatively related to the various N concentrations. Our results indicate that shading by phytoplankton unrelated to the variation in N loading and perhaps toxic stress exerted by high nitrogen were responsible for the decline in macrophyte growth. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordWhole-ecosystem Experiment Submersed Macrophytes Nitrogen Phosphorus Phytoplankton Periphyton
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Water Resources
WOS IDWOS:000360418000039
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Huazhong Agr Univ, Wuhan 430070, Peoples R China
4.Aarhus Univ, Dept Biosci, DK-8600 Silkeborg, Denmark
5.Aarhus Univ, Arctic Res Ctr, DK-8600 Silkeborg, Denmark
6.Sino Danish Ctr Educ & Res SDC, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yu, Qing,Wang, Hong-Zhu,Li, Yan,et al. Effects of high nitrogen concentrations on the growth of submersed macrophytes at moderate phosphorus concentrations[J]. WATER RESEARCH,2015,83:385-395.
APA Yu, Qing.,Wang, Hong-Zhu.,Li, Yan.,Shao, Jian-Chun.,Liang, Xiao-Min.,...&Wang, Hai-Jun.(2015).Effects of high nitrogen concentrations on the growth of submersed macrophytes at moderate phosphorus concentrations.WATER RESEARCH,83,385-395.
MLA Yu, Qing,et al."Effects of high nitrogen concentrations on the growth of submersed macrophytes at moderate phosphorus concentrations".WATER RESEARCH 83(2015):385-395.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yu, Qing]'s Articles
[Wang, Hong-Zhu]'s Articles
[Li, Yan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yu, Qing]'s Articles
[Wang, Hong-Zhu]'s Articles
[Li, Yan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yu, Qing]'s Articles
[Wang, Hong-Zhu]'s Articles
[Li, Yan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.