Effects of iron and phosphorus on Microcystis physiological reactions.
- Author:
Ming-Ming OU
1
;
Yan WANG
;
Bao-Xue ZHOU
;
Wei-Min CAI
Author Information
- Publication Type:Journal Article
- MeSH: Iron; physiology; Light; Microcystis; metabolism; Phosphorus; physiology
- From: Biomedical and Environmental Sciences 2006;19(5):399-404
- CountryChina
- Language:English
-
Abstract:
OBJECTIVETo observe the effects of iron and phosphorus on Microcystis physiological reactions.
METHODSThe experimental conditions were chosen as the light dark cycles of 16 h 8 h, 12 h 12 h, and 8 h 16 h. The cell change of morphology and life history, cell number, cell color, and cell area of Microcystis were analyzed quantitatively. According to the resource competition and Monod equation, Microcystis kinetics of phosphorus and iron were also examined.
RESULTSThe longer light time caused more special cell division, slower growth rate, and easier change of bigger cell area. The color of alga was changed from green to brown. Ks and micromax of phosphorus absorption were 0.0352 mircomol x L(-l) and 0.493 d(-1), respectively. Those of iron absorption were 0.00323 micromol x L(-1) and 0.483 d(-1).
CONCLUSIONMicrocystis bloom is more dominant than other algae.
