PMID- 21634158 OWN - NLM STAT- MEDLINE DCOM- 20111114 LR - 20161018 IS - 0250-3301 (Print) IS - 0250-3301 (Linking) VI - 32 IP - 3 DP - 2011 Mar TI - [Exploration of relationships between phytoplankton and related environmental factors in the Daning River during sensitive period of algal blooms]. PG - 641-8 AB - To elucidate relationships between phytoplankton and related environmental factors, phytoplankton and environmental parameters of water quality in the Daning River were conducted using multivariate statistical analysis. Most of the investigated physico chemical parameters [water temperature, total nitrogen, nitrate-N (NO3(-) -N), pH and dissolved oxygen concentration (DO)] in Daning River are significantly different among those sampling sites (ANOVA, p < 0.05). The results indicate that the Daning River has a comparatively high spatial and temporal heterogeneity in the phytoplankton community composition (ANOVA, p < 0.05). The maximum cell density was recorded in Dachang and the minimum density was found at Wuxia-kou sites. Multi-algal species blooms were observed in the same time and place with the maximum density appeared. Correlation analysis was performed to illuminate the relationships between algae density and environmental variables, TN (r = - 0.789, p < 0.05), NO3(-) -N (r = - 0.825, p < 0.05) and NO2(-) -N (r = -0.803, p < 0.05) were negatively correlated with algae density. The results indicate that nitrogen soluble nutrients are key regulatory factors for phytoplankton abundance. The results of redundancy analysis (RDA) indicate that main soluble nutrients (TN, TP, NO3(-)-N and NO2(-)-N), suspended substance (SS) and transparency contributed significantly to phytoplankton community composition. Phytoplankton growth could enhance the pH value. The environmental characterizations and sample sites adjacency contributed significantly to phytoplankton community composition. FAU - Zheng, Bing-Hui AU - Zheng BH AD - River and Coastal Environmental Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. zhengbh@craes.org.cn FAU - Zhang, Jia-Lei AU - Zhang JL FAU - Wang, Li-Jing AU - Wang LJ FAU - Wang, Li-Ping AU - Wang LP FAU - Huang, Min-Sheng AU - Huang MS FAU - Cao, Cheng-Jin AU - Cao CJ FAU - Wu, Guang-Ying AU - Wu GY LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Huan Jing Ke Xue JT - Huan jing ke xue= Huanjing kexue JID - 8405344 RN - 0 (Water Pollutants, Chemical) SB - IM MH - China MH - Environmental Monitoring MH - *Eutrophication MH - Fresh Water/*analysis MH - Multivariate Analysis MH - Phytoplankton/*growth & development MH - Rivers MH - Water Microbiology MH - Water Pollutants, Chemical/*analysis EDAT- 2011/06/04 06:00 MHDA- 2011/11/15 06:00 CRDT- 2011/06/04 06:00 PHST- 2011/06/04 06:00 [entrez] PHST- 2011/06/04 06:00 [pubmed] PHST- 2011/11/15 06:00 [medline] PST - ppublish SO - Huan Jing Ke Xue. 2011 Mar;32(3):641-8.