[Population dynamics of Alexandrium tamarense and its relations with environmental factors in Nanji Islands sea area of Zhejiang Province].
Based on the investigation in Nanji Islands sea area of Zhejiang Province from April 2006 to March 2007, the dynamics of Alexandrium tamarense and its relations with environmental factors were studied. In the study sea area, A. tamarense cells could only be found in spring (from April to June), and the cell abundance was of single peak curve, with the highest (12250 cells x L(-1)) in surface water on 8th of May. Higher cell abundance of A. tamarense was found at the water temperature of 18.5 degrees C - 19.5 degrees C, salinity of 29.5 per thousand - 31.0 per thousand, and lower PO4-P concentration, but no correlation was observed between A. tamarense cell abundance and water dissolved inorganic N concentration. Linear stepwise regression revealed that there was a significant positive correlation between the cell abundance of A. tamarense and the ratio of water dissolved inorganic N to PO4-P.
Li
Yang
Y
Guangdong Higher Education Key Laboratory of Ecology and Environmental Science, College of Life Science, South China Normal University, Guangzhou 510631, China. liyang@scnu.edu.cn
Lü
Song-Hui
SH
Jiang
Tian-Jiu
TJ
Li
Huan
H
Xiao
Yun-Pu
YP
You
Sheng-Pao
SP
D000818:Animals; D002681:China; D004141:Dinoflagellida / Q000254:growth & development* / Q000378:metabolism; D008387:Marine Toxins / Q000032:analysis; D009584:Nitrogen / Q000032:analysis*; D009792:Oceans and Seas; D010710:Phosphates / Q000032:analysis*; D011157:Population Dynamics; D012623:Seawater / Q000032:analysis*
D008387:Marine Toxins; D010710:Phosphates; D009584:Nitrogen