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JPR Advance Access published online on May 27, 2008
Journal of Plankton Research, doi:10.1093/plankt/fbn058
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© The Author 2008. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Comparative study of phosphorus strategies of three typical harmful algae in Chinese coastal waters

Linjian Ou1,2, Dan Wang2, Bangqin Huang2,*, Huasheng Hong2, Yuzao Qi1 and Songhui Lu1

1 Research Center of Harmful Algal Blooms and Aquatic Environmental Science, Jinan University, 510632510632 Guangzhou, Guangdong, China 2 State Key Laboratory of Marine Environmental Science and Environmental Science Research Center, Xiamen University, 361005361005 Xiamen, Fujian, China

* Author to whom correspondence should be addressed: Environmental Science Research Center Xiamen University Xiamen, Fujian, 361005361005 P. R. China Tel: 8686 592592 21877832187783 Fax: 8686 592592 21806552180655 E-Mail: bqhuang{at}xmu.edu.cn

Received on February 27, 2008; revised on May 23, 2008; accepted on May 26, 2008


  Abstract

A series of batch culture experiments were carried out to compare the specific eco-physiological responses of three typical harmful algae of Chinese coastal waters to environmental phosphorus (P) variations. Results showed that Skeletonema costatum, when compared with Prorocentrum donghaiense or Alexandrium catenella, was a better growth strategist in nutrient-rich condition. Although S. costatum had a greater advantage in phosphate affinity and could save more internal P, it also had a higher P demand for growth and it used up all its resources to sustain a high growth rate. The growth of S. costatum collapsed soon after phosphate depletion. P. donghaiense and A. catenella, with lower growth rates, could survive well under P-limited conditions. With higher affinities for dissolved organic phosphorus (DOP), P. donghaiense and A. catenella might likely make good use of the metabolized DOP in the water after the collapse of S. costatum blooms to sustain their growth.

Key Words: Alexandrium catenella • Eco-physiological strategies • East China Sea • Harmful algae • Phosphorus • Prorocentrum donghaiense • Skeletonema costatum

Communicating Editor:Dr Roger Harris


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