The niche of P. tabulaeformis and Q. liaotungensis had great overlapped.They formed strong the intraspecific and interspecific competition. 油松和遼東櫟各自生態位有較大重疊，形成強烈的各自種內競爭和彼此種間競爭。
The effect of initial cell density on the interspecific competition between Heterosigma akashiwo and Prorocentrum donghaiense was studied in this experiment by co-culture method. 摘要通過共培養的方法，研究了不同起始數量對赤潮異彎藻和東海原甲藻之間種間競爭的影響。
