%0 Journal Article
%T Effects of EDTA and Iron on Growth and Competition of Microcystis aeruginosa and Scenedesmus quadricauda<br>EDTA和铁对铜绿微囊藻和四尾栅藻生长和竞争的影响
%A CHU Zhao-sheng
%A JIN Xiang-can
%A YAN Feng
%A ZHENG Shuo-fang
%A PANG Yan
%A ZENG Qing-ru
%A <br>储昭升
%A 金相灿
%A 阎峰
%A 郑朔方
%A 庞燕
%A 曾清如
%J 环境科学
%D 2007
%I 
%X Not only population density of phytoplankton but also its community structure were influenced by iron limitation. The growth and competition of a cyanobacterium Microcystis aeruginosa and a green alga Scenedesmus quadricauda at different iron and EDTA concentrations were investigated using batch cultures. The results showed that the growth of M. aeruginosa was significantly inhibited whereas S. quadricauda wasn't when EDTA at high concentrations (> or = 13.5 micromol/L), and consequently, it favored the dominance of S. quadricauda. Moreover, increasing iron concentration from 3 micromol/L to 18 micromol/L could greatly alleviate the growth inhibition of M. aeruginosa while increasing concentration of other microelements e.g. B, Mn, Zn, Cu, Mo didn't. These results suggest that high EDTA concentration decreases iron availability for M. aeruginosa, but not for S. quadricauda. The reason that the two algae respond to high EDTA concentrations differently is that their adsorption strategies for iron should be different.
%K Microcystis aeruginosa
%K EDTA
%K Fe<br>铜绿微囊藻
%K 四尾栅藻
%K EDTA
%K Fe
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=BC85E858628321E1D15A7498A7B16896&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=708DD6B15D2464E8&sid=3E72ADB579DCDDB1&eid=6F1FAC324A170F6B&journal_id=0250-3301&journal_name=环境科学&referenced_num=7&reference_num=25