Photosynthetic efficiency, cell volume, and elemental stoichiometric ratios in Thalassirosira weissflogii under phosphorus limitation |
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| Authors: | Sheng Liu Zhiling Guo Tao Li Hui Huang Senjie Lin |
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| Institution: | LIU Sheng 1,**,GUO Zhiling 1,3,LI Tao 1,2,HUANG Hui 1,LIN Senjie1,4 1 Key Laboratory of Marine Bio-resources Sustainable Utilization,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China 2 Tropical Marine Biological Research Station in Hainan,Sanya 572000,China 3 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 4 Department of Marine Sciences,University of Connecticut,CT 06340,USA |
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| Abstract: | Nutrient limitation is known to inhibit growth and metabolism and to alter elemental stoichiometric ratios in phytoplankton. In this study, physiological changes in Thalassirosira weissflogii were measured under different dissolved inorganic phosphate (DIP) regimes in semi-continuous cultures to revisit the utility of the Redfield ratio for assessing nutrient limitation. The results showed that cell size increased with decreasing DIP availability. In the P-depleted treatment (f/2-P) the cell size was 1.48 t... |
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| Keywords: | phosphorus diatom physiological responses PAM elemental ratio |
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