Dissolved reactive manganese as a new index determining the trophic status of limnic waters |
| |
| Institution: | 1. School of Chemical Engineering, Shaanxi Key Laboratory of Degradable Medical Material, Northwest University, Xi''an, 710069, Shaanxi, China;2. Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, China;1. Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China;2. Donghu Experimental Station of Lake Ecosystems, State key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072, China;3. Poyang Lake Eco-economy Research Center, Jiujiang University, Jiujiang 332005, China;4. National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing 100012, China;5. College of Life Sciences, Capital Normal University, Beijing 100048, China |
| |
| Abstract: | Dissolved reactive manganese seems to be one of the parameters which determines the trophic status of limnic waters, as suggested by its strong correlations with total phosphorus, chlorophyll a, and water pH. The determination of the trophic status involved the application of reactive manganese due to its bioavailability, providing information on the actual, not just the potential (as in the case of total phosphorus or total organic carbon), threat of water eutrophication.The calculation of trophic states index (TSI) based on the reactive manganese concentration, as determined by TSIDRMn = 20.61 ln (DRMn) ? 35.03, permits the rational assessment of the trophic status of lakes. Oligotrophic lakes are distinguished by concentrations of DRMn < 25 μg/L, mesotrophic by 25–60 μg/L, eutrophic by 60–150 μg/L, and hypertrophic by >150 μg/L.The trophic status of 25 lakes located in central Europe in north-eastern Poland was determined based on the proposed “manganese index” and verified by commonly applied indices proposed by Carlson, Kratzer and Brezonik, and Dunalska. |
| |
| Keywords: | Trophic states index Dissolved reactive manganese Eutrophication Lake |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
