| The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity | |
| Wang, Heyun; Ni, Leyi; Xie, Ping; Ni, LY (reprint author), Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Donghu South Rd 7, Wuhan 430072, Peoples R China. | |
| 2013 | |
| Source Publication | CHEMOSPHERE
 |
| ISSN | 0045-6535 |
| Volume | 93Issue:2Pages:373-379 |
| Abstract | Increased ammonium (NH4-N) concentrations in water bodies have been reported to adversely affect the dominant species of submersed vegetation in meso-eutrophic waters worldwide. However calcareous plants were lowly sensitive to NH4-N toxicity. In order to make clear the function of calcification in the tolerance of calcareous plants to NH4-N stress, we studied the effects of increased HCO3- and additional NH4-N on calcification and utilization of dissolve inorganic carbon (DIC) in Chara vulgaris Linn in a 7-d sub-acute experiment (light:dark 12:12 h) carried out in an open experimental system in lab. Results revealed that calcification was dependent of utilization of dissolve inorganic carbon. Additional HCO3- significantly decreased the increase of pH while additional NH4-N did not. And additional HCO3- significantly improved calcification while NH4-N did in versus in relation to the variation of DIC concentration. However, addition of both HCO3- and NH4-N increased utilization of DIC. This resulted in calcification to utilization of DIC ratio decreased under additional NH4-N condition while increased under additional HCO3- conditions in response to the variation of solution pH. In the present study, external HCO3- decreased the increase of solution pH by increasing calcification, which correspondingly mitigated the toxic effect of high NH4-N. And we argue that the mitigating effect of increased HCO3- on NH4-N toxicity is dependent of plant calcification, and it is a positive feedback mechanism, potentially leading to the dominance of calcareous plants in mesa-eutrophic water bodies. (C) 2013 Elsevier Ltd. All rights reserved. |
| Keyword | Calcification Dissolve Inorganic Carbon Utilization Ammonium Meso-eutrophic Water |
| Department | [Wang, Heyun ; Ni, Leyi ; Xie, Ping] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| Funding Organization | China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] ; China Postdoctoral Science Foundation [20090451088]; National Natural Science Foundation of China [31000161] |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/19546 |
| Collection | 淡水生态学研究中心_期刊论文 |
| Corresponding Author | Ni, LY (reprint author), Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Donghu South Rd 7, Wuhan 430072, Peoples R China. |
| Recommended Citation GB/T 7714 | Wang, Heyun,Ni, Leyi,Xie, Ping,et al. The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity[J]. CHEMOSPHERE,2013,93(2):373-379. |
| APA | Wang, Heyun,Ni, Leyi,Xie, Ping,&Ni, LY .(2013).The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity.CHEMOSPHERE,93(2),373-379. |
| MLA | Wang, Heyun,et al."The mitigating effect of calcification-dependent of utilization of inorganic carbon of Chara vulgaris Linn on NH4-N toxicity".CHEMOSPHERE 93.2(2013):373-379. |
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