The Response of Phytoplankton to Nutrient Enrichment under Two Temperature in East Lake
ZHAO Xianfu
MA Peiming
LIU Guoxiang
HU Zhengyu
Abstract：Phytoplankton growth is nutrient regulation,and the relationship between phytoplankton and nutrients is an important part of the study of limnology.Clarifying algae nutritional status helps to understand the ecology of aquatic plants,and improve the management of water.Bioassay is a commonly used method to evaluate the nutritional status of algae.In the present study bioassay is carried out at different temperatures,different nutrients were added to the same source of phytoplankton.To study the influence of the temperature and the source of nutrition on phytoplankton,we measured algal biomass,alkaline phosphatase,etc.The results indicate that temperature has a great influence on the results of nutrient addition.As the results show that the biological testing method speculated algae nutritional status should try to be consistent with the in situ conditions.NO3-become a priority in the use of algae as nitrogen source at low temperature,and in 25 ℃ when NH4+ became thepriority nitrogen source of algae.Alkaline phosphatase decreased significantly after phosphorus added,nitrogen added can cause alkaline phosphatase elevated significantly,indicating that algae needs phosphorus,and indirect effects of nitrogen sources on alkaline phosphatase.
Keywords：ammonianitratenutrient enrichmentalkaline phosphatasecar/chl.a
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7-13 )