Studies on marine nanodiatoms in Fujian coastal waters of China in winter

For the first time, nanodiatoms (<20pm) and microdiatoms (>20pm) in the coastal waters of Xiamen, Shandu, Fuqing, Haitan, Putian and Meizhou of Fujian Province along the western coast of the Taiwan Strait are quantitatively counted by TEM in the paper.The results show that the number of nanodiatoms from all the station is more than that of microdiatoms, accounting for 92% of the species collected.This indicates that nanodiatoms constitute a large microcosm of the whole diatom group.Unfortunately, the lower resolution of light microscopes which have been used in the study of diatoms in the past makes this unneglectable microcosm unnoticed.Thanks to TEM, 47 species of nanodiatoms are identified and four of them are for the first time recorded in China.The new records are Hantzschia spectabilis, Navicula crucigera, Nav.spicula and Nitzs.rosenstockii.