Bioavailability of Phosphorus Fractions for Incepting of Chlorella pyrenoidosa in the Lower Reaches of the Hanjiang River in China

Abstract:

Using total phosphorus (TP) concentrations to estimate eutrophication risk is problematic for management purposes, as only some forms of P are biologically available for phytoplankton growth. This study estimated the bioavailability of P fractions of water and the floodplain sediment in the lower reaches of the Hanjiang River in China using multiple regressions. And the effects of concentrations of P fractions on algal growth were also studied. The results showed that the total soluble P (TSP) and the particulate P (PP) can well predict the growth of Chlorella pyrenoidosa in water samples. And the exchangeable P (exch-P) and the P bound to Al, Fe, and Mn oxides and hydroxides (Fe/Al–P) were adapted to predicting the growth of Chlorella pyrenoidosa in the floodplain sediment samples.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 3-7
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.3
• Online since: January 2011
• Authors: Jian Ru Tian, Guo Li Chen, Guang Feng Kang, Xiu Ping Zheng
• Keywords: Bioavailability, Chlorella pyrenoidosa, Lower Reaches of the Hanjiang River, Multiple Regression, P Fractions

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