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| Screening of Native Aquatic Macrophytes for Establishing Aquatic Life Criteria |
| Received:April 17, 2014 |
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| KeyWord:aquatic macrophytes;aquatic life criteria;test organisms;species sensitivity distribution;pollutants |
| Author Name | Affiliation | E-mail | | LIU Ting-ting | State Key Laboratory for Environmental Criteria and Risk Assessment, State Environment Protection Key Laboratory of Ecological Effects and Risk Assessment of Chinese, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHENG Xin | State Key Laboratory for Environmental Criteria and Risk Assessment, State Environment Protection Key Laboratory of Ecological Effects and Risk Assessment of Chinese, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | Zhengxin@craes.org.cn | | YAN Zhen-guang | State Key Laboratory for Environmental Criteria and Risk Assessment, State Environment Protection Key Laboratory of Ecological Effects and Risk Assessment of Chinese, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | LIU Zheng-tao | State Key Laboratory for Environmental Criteria and Risk Assessment, State Environment Protection Key Laboratory of Ecological Effects and Risk Assessment of Chinese, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | |
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| Abstract: |
| Screening of sensitive test aquatic organisms is critical to water quality criteria for aquatic life. Aquatic macrophytes are one of the most important objects for water quality criteria. In the present study, eight native aquatic macrophytes, Lemna minor, Spirodela polyrrhiza, Salvinia natans, Ceratophyllum demersum, Myriophyllum spicatum, Hydrilla verticillata, Potamogeton crispus, and Potamogeton pectinatus, were obtained based on their geographical locations, availability of toxicity data, and economical and ecological significance. According to the USEPA principles for aquatic life criteria, top 15 pollutants(3 heavy metals and 12 herbicides) were ranked per their toxicities to aquatic macrophytes from the ECOTOX database. Seven aquatic macrophytes showed high sensitivities to pollutants(the cumulative probability was less than 15%). The cumulative probability of Lemna minor to thallium and Linuron was 4.3% and 6.4%; that of Spirodela polyrhiza to paraquat and metsulfuron methyl 7.8% and 11.5%; that of Salvinia natans to N-Methylmethanamine and metolachlor 8.5% and 14.8%; that of Potamogeton pectinatus to 2,4-Dichlorophenoxyacetic acid, linuron and metolachlor 1.2%, 2.1% and 1.9%; that of Potamogeton crispus to 2,4-Dichlorophenoxyacetic acid and metsulfuron methyl 10.8% and 7.7%; that of Hydrilla verticillata to bensulfuron methyl and fluridone 12.5% and 7.4%; and that of Ceratophyllum demersum to linuron, copper chloride and metolachlor 8.5%, 7.4% and 11.1%, respectively. These species could be used as test organisms for development of water quality criteria. |
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