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Eutrophication triggers the shift of nutrient absorption pathway of submerged macrophytes: Implications for the phytoremediation of eutrophic waters
Xu, Xiaoguang1; Zhou, Yiwen1,2,3; Han, Ruiming1; Song, Kang3; Zhou, Xiaohong2; Wang, Guoxiang1; Wang, Qilin4
Corresponding AuthorSong, Kang(sk@ihb.ac.cn) ; Zhou, Xiaohong()
2019-06-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume239Pages:376-384
AbstractEcologically restoring eutrophic water bodies by using submerged macrophytes is an economical, effective and sustainable technology worldwide. However, current understanding on the nutrient absorption pathway of submerged macrophytes in freshwater ecosystems, especially under different trophic states, is still limited. In this study, two strategically designed systems were established to form isolated units for preventing nutrient exchange amongst Potamogeton crispus, water column and sediments. Results showed that, in oligotrophic state, P. crispus mainly relied on their roots to absorb nutrients from sediments for maintaining stable growth, with the maximum average height, fresh weight and relative growth rate of 12.85 cm, 4.86 g ind(-1) and 0.062, respectively. However, the eutrophic conditions (TN of 4 mg L-1 and TP of 0.3 mg L-1) triggered the shift of the nutrient absorption pathway from the roots to the shoots to some extent, that is, the shoots of P. crispus gradually became a remarkable pathway to directly absorb nutrients from the water column. Approximately 49.85% and 18.35% of total nitrogen (TN) and total phosphorus (TP) from overlying water were allocated to the shoots of P. crispus, but had no effects on the growth, photosynthesis and ecological stoichiometric differences (p > 0.05). Sediments acting as a nitrogen (N) source supported nearly 11.56% of TN for shoot uptake and simultaneously received around 13.33% of TP subsidy from the overlying water. The no longer sole dependence of submerged macrophytes on their root system to absorb N and phosphorus nutrients indicated that the ability of shoots to absorb nutrients increased with the gradual increase in nutrients in water column. These findings imply that the large specific surface area of shoots is beneficial for restoring eutrophic waters.
KeywordEutrophication Nutrient Potamogeton crispus Absorption pathway Phytoremediation
DOI10.1016/j.jenvman.2019.03.069
Funding OrganizationMajor Science and Technology Programme for Water Pollution Control and Treatment ; Technology Project of Water Resources Department of Jiangsu Province ; the National Natural Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China ; Major Science and Technology Programme for Water Pollution Control and Treatment ; Technology Project of Water Resources Department of Jiangsu Province ; the National Natural Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China
Indexed BySCI ; SCI
Language英语
Funding ProjectMajor Science and Technology Programme for Water Pollution Control and Treatment[2017ZX07203-003] ; Technology Project of Water Resources Department of Jiangsu Province[2016050] ; the National Natural Science Foundation of China[41703105] ; the National Natural Science Foundation of China[41877344] ; the National Natural Science Foundation of China[41773081] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[17KJB170009]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000465366100041
WOS KeywordPOTAMOGETON-CRISPUS ; VALLISNERIA-NATANS ; SHALLOW ; PHOSPHORUS ; SEDIMENT ; NITROGEN ; LAKE ; RELEASE ; HYDROCHARITACEAE ; STOICHIOMETRY
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Funding OrganizationMajor Science and Technology Programme for Water Pollution Control and Treatment ; Technology Project of Water Resources Department of Jiangsu Province ; the National Natural Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China ; Major Science and Technology Programme for Water Pollution Control and Treatment ; Technology Project of Water Resources Department of Jiangsu Province ; the National Natural Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/28485
Corresponding AuthorSong, Kang; Zhou, Xiaohong
Affiliation1.Nanjing Normal Univ, Sch Environm, Nanjing 210023, Jiangsu, Peoples R China
2.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Jiangsu, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
4.Univ Technol Sydney, Sch Civil & Environm Engn, Ctr Technol Water & Wastewater, Ultimo, NSW 2007, Australia
Recommended Citation
GB/T 7714
Xu, Xiaoguang,Zhou, Yiwen,Han, Ruiming,et al. Eutrophication triggers the shift of nutrient absorption pathway of submerged macrophytes: Implications for the phytoremediation of eutrophic waters[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019,239:376-384.
APA Xu, Xiaoguang.,Zhou, Yiwen.,Han, Ruiming.,Song, Kang.,Zhou, Xiaohong.,...&Wang, Qilin.(2019).Eutrophication triggers the shift of nutrient absorption pathway of submerged macrophytes: Implications for the phytoremediation of eutrophic waters.JOURNAL OF ENVIRONMENTAL MANAGEMENT,239,376-384.
MLA Xu, Xiaoguang,et al."Eutrophication triggers the shift of nutrient absorption pathway of submerged macrophytes: Implications for the phytoremediation of eutrophic waters".JOURNAL OF ENVIRONMENTAL MANAGEMENT 239(2019):376-384.
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