1. Title, Journal and Authors

- Title: Competition for phosphorus between the nitrogen-fixing cyanobacteria anabaena and aphanizomenon

- Journal : Microbiology Ecology

- Authors : W.T. De Nobel, Jef Huisman, Jacky L. Snoep, Luuc R . mur

 

2. Summary

 

- Anabaena blooms were characterized by very low levels of soluble inorganic N in combination with relatively high particulate N concetnrations.

- Anabaena also coincided with a relatively high underwater light availability (high ratio of euphotic depth to mixing depth)

- Aphanizomenon, in contrast, seemed much less ligh dependent and less nitrogen fixation

- The maximum specific growth rates of the nitrogen fixing strains of Aphanizomenon and Anabaena, were 67 and 80% respectively of that of NH4+ grown cell. (because of energy consumption during nitrogen fixing)

- Irrespective of the N source, the maximum specific growth rates of Anabaena is higher than that of Aphanizomenon.

 

3. Application to research

- The 4 major cyanobacteria species in Korea are Microcystis, Anabaena, Osciilatoria and Aphanizomenon. especially, Microcystis and Anabaena take 80% of overall cyanobacteria populations. this paper shows some evidences of Anabena dominance.

 

4. Contact

Sungho Shin (Ph.D. program)

Environmental Systems Engineering Lab.

School of Environmental Science & Engineering

Gwangju Institute of Science and Technology

1 Oryong-dong Buk-gu Gwangju, 500-712, Korea

Email :  hogili89@gist.ac.kr