K:Fe ratio as an indicator of cyanobacterial bloom in a eutrophic lake

Cited 0 time in scopus
Metadata Downloads
K:Fe ratio as an indicator of cyanobacterial bloom in a eutrophic lake
Chi-Yong Ahn; Dae Kyun Park; Hee Sik Kim; A S Chung; Hee-Mock Oh
Bibliographic Citation
Journal of Microbiology and Biotechnology, vol. 14, no. 2, pp. 290-296
Publication Year
The effects of potassium, sodium, calcium, magnesium, and iron on cyanobacterial bloom potentials were investigated in Daechung Reservoir, Korea. Potassium showed the highest correlation with the cyanobacterial cell number (r=0.487, P<0.05) and phycocyanin concentration (r=0.499, P<0.05). However, it was not likely that the potassium had directly affected the bloom formation, because the variations of its concentration were not significantly large. In contrast, the Fe concentration fluctuated drastically and exhibited a negative correlation with the cyanobacterial cell number (r=0.388, P<0.1) and phycocyanin concentration (r=0.446, P<0.05). Accordingly, the K:Fe atomic ratio would appear to reflect the extent of cyanobacterial bloom more precisely than K or Fe alone. The K:Fe ratio specifically correlated with cyanobacterial percentage, the cyanobacterial cell number and phycocyanin concentration (r=0.840, P<0.001; r=0.416, P<0.05; r=0.522, P<0.01, respectively). With the K:Fe atomic ratio of over 200, the chlorophyll-a concentration, cyanobacterial cell number, and phycocyanin concentration exceeded 10 μg l-1, 20,000 cells ml-1, and 20 pM, respectively, the general criteria of eutrophic water.
bloomcyanobacteriadaechung reservoirindicatorK:Fe ratio
Korea Soc-Assoc-Inst
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
Files in This Item:
  • There are no files associated with this item.

Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.