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Controlling cyanobacterial blooms by managing nutrient ratio and limitation in a large hyper-eutrophic lake: Lake Taihu, China.
J Environ Sci (China). 2015 Jan 01; 27:80-6.JE

Abstract

Excessive nitrogen (N) and phosphorus (P) loading of aquatic ecosystems is a leading cause of eutrophication and harmful algal blooms worldwide, and reducing nutrient levels in water has been a primary management objective. To provide a rational protection strategy and predict future trends of eutrophication in eutrophic lakes, we need to understand the relationships between nutrient ratios and nutrient limitations. We conducted a set of outdoor bioassays at the shore of Lake Taihu. It showed that N only additions induced phytoplankton growth but adding only P did not. Combined N plus P additions promoted higher phytoplankton biomass than N only additions, which suggested that both N and P were deficient for maximum phytoplankton growth in this lake (TN:TP=18.9). When nutrients are present at less than 7.75-13.95 mg/L TN and 0.41-0.74 mg/L TP, the deficiency of either N or P or both limits the growth of phytoplankton. N limitation then takes place when the TN:TP ratio is less than 21.5-24.7 (TDN:TDP was 34.2-44.3), and P limitation occurs above this. Therefore, according to this ratio, controlling N when N limitation exists and controlling P when P deficiency is present will prevent algal blooms effectively in the short term. But for the long term, a persistent dual nutrient (N and P) management strategy is necessary.

Authors+Show Affiliations

State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China. Electronic address: mjr850620@126.com.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China. Electronic address: qinbq@niglas.ac.cn.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; College of Ecological and environmental Engineering, Qinghai University, Xining 810016, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25597665

Citation

Ma, Jianrong, et al. "Controlling Cyanobacterial Blooms By Managing Nutrient Ratio and Limitation in a Large Hyper-eutrophic Lake: Lake Taihu, China." Journal of Environmental Sciences (China), vol. 27, 2015, pp. 80-6.
Ma J, Qin B, Wu P, et al. Controlling cyanobacterial blooms by managing nutrient ratio and limitation in a large hyper-eutrophic lake: Lake Taihu, China. J Environ Sci (China). 2015;27:80-6.
Ma, J., Qin, B., Wu, P., Zhou, J., Niu, C., Deng, J., & Niu, H. (2015). Controlling cyanobacterial blooms by managing nutrient ratio and limitation in a large hyper-eutrophic lake: Lake Taihu, China. Journal of Environmental Sciences (China), 27, 80-6. https://doi.org/10.1016/j.jes.2014.05.042
Ma J, et al. Controlling Cyanobacterial Blooms By Managing Nutrient Ratio and Limitation in a Large Hyper-eutrophic Lake: Lake Taihu, China. J Environ Sci (China). 2015 Jan 1;27:80-6. PubMed PMID: 25597665.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Controlling cyanobacterial blooms by managing nutrient ratio and limitation in a large hyper-eutrophic lake: Lake Taihu, China. AU - Ma,Jianrong, AU - Qin,Boqiang, AU - Wu,Pan, AU - Zhou,Jian, AU - Niu,Cheng, AU - Deng,Jianming, AU - Niu,Hailin, Y1 - 2014/11/15/ PY - 2014/02/17/received PY - 2014/04/30/revised PY - 2014/05/27/accepted PY - 2015/1/20/entrez PY - 2015/1/20/pubmed PY - 2015/5/30/medline KW - Cyanobacterial blooms KW - Eutrophication KW - Limitation KW - Nitrogen KW - Nutrient ratio KW - Phosphorus SP - 80 EP - 6 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 27 N2 - Excessive nitrogen (N) and phosphorus (P) loading of aquatic ecosystems is a leading cause of eutrophication and harmful algal blooms worldwide, and reducing nutrient levels in water has been a primary management objective. To provide a rational protection strategy and predict future trends of eutrophication in eutrophic lakes, we need to understand the relationships between nutrient ratios and nutrient limitations. We conducted a set of outdoor bioassays at the shore of Lake Taihu. It showed that N only additions induced phytoplankton growth but adding only P did not. Combined N plus P additions promoted higher phytoplankton biomass than N only additions, which suggested that both N and P were deficient for maximum phytoplankton growth in this lake (TN:TP=18.9). When nutrients are present at less than 7.75-13.95 mg/L TN and 0.41-0.74 mg/L TP, the deficiency of either N or P or both limits the growth of phytoplankton. N limitation then takes place when the TN:TP ratio is less than 21.5-24.7 (TDN:TDP was 34.2-44.3), and P limitation occurs above this. Therefore, according to this ratio, controlling N when N limitation exists and controlling P when P deficiency is present will prevent algal blooms effectively in the short term. But for the long term, a persistent dual nutrient (N and P) management strategy is necessary. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/25597665/Controlling_cyanobacterial_blooms_by_managing_nutrient_ratio_and_limitation_in_a_large_hyper_eutrophic_lake:_Lake_Taihu_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(14)00231-9 DB - PRIME DP - Unbound Medicine ER -