Phytoneuston in the southern Taiwan Strait

摘要

In June and November 1988 samples were collected by the improved Manta neuston net at 18 stations in the southern Taiwan Strait. One hundred and two species and variations of phytoneuston are identified. Total individuals of phytoneuston in June are more than those in November. The horizon- tal distribution of phytoneuston is that the dense area occurs in the southern Taiwan Bank in June, while it appears in the western Taiwan Bank in November. The diel variations of phytoneuton are very obvi- ous. The maximum abundance of phytoneuston occurs in the afternoon (16 : 00), and the minimum at midnight which is opposite to zooneuston. The relationships between phytoneuston and environment, and between phytoneuston and zooneuston are also discussed.