| analysis of paralytic shellfish toxins in aphanizomenon dc-1 from lake dianchi, china. | lake dianchi is in yunnan province in southwestern china. in recent years, significant cyanobacterial blooms have occurred in this lake nearly every year because of eutrophication. monitoring data for the past 5 years acquired by our research group showed that phytoplankton composition alternated between species of microcystis sp. during warm seasons and those of aphanizomenon sp. during cool seasons. in march 2003, when phytoplankton composition was highly dominated by aphanizomenon sp., sample ... | 2006 | 16646002 |