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Publication Type J
Authors Lin, QW; He, F; Ma, JM; Zhang, Y; Liu, BY; Min, FL; Dai, ZG; Zhou, QH; Wu, ZB
Author Full Name Lin, Qing-Wei; He, Feng; Ma, Jian-Min; Zhang, Yi; Liu, Bi-Yun; Min, Fen-Li; Dai, Zhi-Gang; Zhou, Qiao-Hong; Wu, Zhen-Bin
Title Impacts of residual aluminum from aluminate flocculant on the morphological and physiological characteristics of Vallisneria natans and Hydrilla verticillata
Source ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Language English
Document Type Article
Author Keywords Hydrilla verticillata; Morphological characteristics; Phytotoxic effect; Physiological characteristics; Residual aluminum; Vallisneria natans
Keywords Plus ACID SOILS; TOLERANCE; WATER; PHOSPHORUS; REMOVAL; GROWTH; PLANTS; PERFORMANCE; MECHANISMS; EFFICIENCY
Abstract Aluminate is generally used as a flocculent in water and wastewater treatment processes, but the residual aluminum (Al) may have toxic effects on aquatic organisms when the concentration accumulates beyond a threshold level. The in situ and laboratory tests were conducted to evaluate the impact of residual Al on submerged macrophytes in West Lake, Hangzhou, China, which receives Al flocculant-purified water diverted from the Qiantang River. The responses of Vallisneria natans and Hydrilla verticillata were investigated based on their morphological and physiological parameters in pot culture and aquarium simulation experiments. In the pot culture experiments, the biomass, seedling number, plant height, stolon number, stolon length, and root weight were significantly higher at a site located 150 m from the inlet compared with those at a site located 15 m from the inlet (P < 0.05), thereby indicating that the residual Al significantly inhibited the morphological development of V. natans and H. verticillata. The variations in the chlorophyll-a, protein, and malondialdehyde contents of the two species in both the pot culture and aquarium simulation experiments also demonstrated that the two submerged macrophytes were stressed by residual Al. V. natans and H. verticillata accumulated 0.052-0.227 mg of Al per gram of plant biomass (fresh weight, mg/g FW) and 0.045-0.205 mg Al/g FW in the in situ experiments, respectively, where the amounts of Al were significantly higher in the plants in the treatment aquaria during the laboratory experiments than those in the controls. These results may have important implications for the restoration of submerged macrophytes and ecological risk assessments in Al-exposed lakes. It is recommended that the Al salt concentration used for the control of lake eutrophication should be reduced to an appropriate level.
Author Address [Lin, Qing-Wei; He, Feng; Zhang, Yi; Liu, Bi-Yun; Min, Fen-Li; Dai, Zhi-Gang; Zhou, Qiao-Hong; Wu, Zhen-Bin] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China; [Lin, Qing-Wei; Min, Fen-Li] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Ma, Jian-Min] Henan Normal Univ, Sch Life Sci, Xin Xiang 453007, Peoples R China
Reprint Address Liu, BY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.; Ma, JM (reprint author), Henan Normal Univ, Sch Life Sci, Xin Xiang 453007, Peoples R China.
E-mail Address mjm6495@sina.com; liuby@ihb.ac.cn
Funding Agency and Grant Number Major Science and Technology Program for Water Pollution Control and Treatment in China's 12th Five-Year Plan [2012ZX07101007-005]; Chinese Academy of Sciences [KFZD-SW-302-02]
Funding Text This study was supported by the Major Science and Technology Program for Water Pollution Control and Treatment in China's 12th Five-Year Plan (No. 2012ZX07101007-005) and the Key Research Program of the Chinese Academy of Sciences (KFZD-SW-302-02). We are very grateful to J. Sun, K.-L. Yi, and Y. Zhang from the Institute of Hydrobiology, Chinese Academy of Sciences for useful advice and assistance with fieldwork. We thank director Z.-Y. Wu and L. Chen at the Management Office of West Lake, Hangzhou municipal government, Zhejiang Province for supporting the field experiment.
Cited Reference Count 42
Times Cited 2
Total Times Cited Count (WoS, BCI, and CSCD) 2
Publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
Publisher City SAN DIEGO
Publisher Address 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
ISSN 0147-6513
29-Character Source Abbreviation ECOTOX ENVIRON SAFE
ISO Source Abbreviation Ecotox. Environ. Safe.
Publication Date NOV
Year Published 2017
Volume 145
Beginning Page 266
Ending Page 273
Digital Object Identifier (DOI) 10.1016/j.ecoenv.2017.07.037
Page Count 8
Web of Science Category Environmental Sciences; Toxicology
Subject Category Environmental Sciences & Ecology; Toxicology
Document Delivery Number FI4CK
Unique Article Identifier WOS:000411917100034
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