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Effect of nitrogen to phosphorus ratios on cell proliferation in marine micro algae 被引量:5
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作者 张青田 胡桂坤 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2011年第4期739-745,共7页
The ratio of nitrogen/phosphorus (N/P) is known to affect cell proliferation of some marine micro algae. We evaluated the effect of N/P ratios on the proliferation and succession of phytoplankton using five marine m... The ratio of nitrogen/phosphorus (N/P) is known to affect cell proliferation of some marine micro algae. We evaluated the effect of N/P ratios on the proliferation and succession of phytoplankton using five marine micro algae species. We used two sources of nitrogen, NH4Cl (N1) and urea (N2), and a single source of phosphorous, NaH2PO4(P). The optimal N/P ratio that differed among the five species was affected by the source of nitrogen, being as follows (N1/P, N2/P in order): Thalassiosira sp. (30/1, 20/1), Heterosigma akashiwo (30/1, 30/1), Chroornonas salina (20/1, 30/1), Chaetoceros gracilis (40/1, 60/1), and A lexandrium sp. (10/1, 30/1). Thus, the source of nitrogen must be considered when analyzing the N/P ratio. Our results provide insight for predicting phytoplankton succession in coastal waters and may be used to forecast the potential risk of harmful algal blooms. 展开更多
关键词 NITROGEN PHOSPHORUS ratio proliferation micro alga
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