IHB OpenIR  > 淡水生态学研究中心  > 期刊论文
Combined Effects of Experimental Warming and Eutrophication on Phytoplankton Dynamics and Nitrogen Uptake
Yu, Chen1; Li, Chao1; Wang, Tao1; Zhang, Min1; Xu, Jun2
Corresponding AuthorZhang, Min(zhm7875@mail.hzau.edu.cn) ; Xu, Jun(xujun@ihb.ac.cn)
2018-08-01
Source PublicationWATER
ISSN2073-4441
Volume10Issue:8Pages:14
AbstractShallow lakes are highly vulnerable to damages caused by human activities and warming trends. To assess whether and how community structures of phytoplankton and nitrogen uptake respond to the combined effects of elevated temperature and eutrophication, we performed a mesocosm experiment in field by combining a 4.5 degrees C increase in temperature and the addition of phosphorus. Our results demonstrated that the combination of rising temperatures and phosphorus loading stimulated the maximum biomass built up by the phytoplankton community, and changed the phytoplankton community by significantly increasing the number of Chlorophyta and Cyanophyta, and decreasing that of Cryptophyta. We also examined the effects of climate warming and eutrophication on phytoplankton nitrogen uptake and dynamics using N-15 tracer techniques. The addition of phosphorus slightly increased the phytoplankton nitrate uptake velocity and relative preference index, but decreased the nitrate uptake turnover time. Warming relatively increased the ammonium uptake velocity and the relative preference index, but decreased the ammonium turnover time. In kinetic studies, NH4+ exhibited a higher maximum uptake rate (V-max) and a lower half-saturation constant (K-s) than NO3- substrates due to temperature elevation and the addition of phosphorus. Hence, warming and eutrophication increased the capacity of phytoplankton for NH4+ uptake and their affinity at low substrate concentrations. Thus, the combined effects of climate warming and phosphorus nutrient availability may increase the prevalence of Chlorophyta and Cyanophyta, and change the nitrogen cycling of aquatic ecosystems.
Keywordclimate change eutrophic lake cyanobacteria community structure nitrogen metabolism
DOI10.3390/w10081057
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31200359] ; National Natural Science Foundation of China[31370473]
WOS Research AreaWater Resources
WOS SubjectWater Resources
WOS IDWOS:000448462700091
WOS KeywordEAST CHINA SEA ; FRESH-WATER ; CLIMATE-CHANGE ; DINOFLAGELLATE BLOOMS ; COMMUNITY COMPOSITION ; DISSOLVED NITROGEN ; UPTAKE KINETICS ; NITRATE UPTAKE ; LAKE ; TEMPERATURE
PublisherMDPI
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/29143
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorZhang, Min; Xu, Jun
Affiliation1.Huazhong Agr Univ, Coll Fisheries, Freshwater Aquaculture Collaborat Innovat Ctr Hub, Hubei Prov Engn Lab Pond Aquaculture, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Yu, Chen,Li, Chao,Wang, Tao,et al. Combined Effects of Experimental Warming and Eutrophication on Phytoplankton Dynamics and Nitrogen Uptake[J]. WATER,2018,10(8):14.
APA Yu, Chen,Li, Chao,Wang, Tao,Zhang, Min,&Xu, Jun.(2018).Combined Effects of Experimental Warming and Eutrophication on Phytoplankton Dynamics and Nitrogen Uptake.WATER,10(8),14.
MLA Yu, Chen,et al."Combined Effects of Experimental Warming and Eutrophication on Phytoplankton Dynamics and Nitrogen Uptake".WATER 10.8(2018):14.
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