天津港附近海域浮游植物群落结构初探

2014年4月、6月、8月、9月和11月对天津港附近海域浮游植物群落结构进行初步调查。结果表明,该调查共鉴定浮游植物2门17科20属共40种,浮游植物丰度0.03×104~10.12×104个/L,生物量0.28~32.50μg/L,浮游植物种类组成为硅藻门占绝对优势,共10科13属28种,占总数的68.3%。5航次调查浮游植物平均多样性指数、丰富度指数和均匀度指数分别为1.2462、0.7539和0.4305,综合分析天津港附近海域浮游植物多样性水平较低,群落组成较为单一。

Phytoplankton Community Structure in Waters near Tianjin Port

Features of the phytoplankton community structure were studied in waters near the Tianjin Port in April ,June ,August ,September and November in 2014 .The results showed that a total of 40 species from 20 genera belonging to 17 families in 2 phyla were identified in the surveyed area .The cell abundance of phytoplankton in survey area was from 0 .03 × 104cells/L to 10 .12 × 104cells/L ,density from 0 .28μg/L to 32 .50 μg/L ,the absolute dominat bacillariophya in phytoplankton species ,including 28 species from 13 genera belonging to 28 families ,accounting for 68 .3% of the total species .The average of Shannon‐Wiener index ,Margalef and Pielou index of phytoplankton in the 5 cruises was 1 .2462 ,0 .7539 and 0 .4305 ,re‐spectively .The comprehensive analysis revealed that the phytoplankton biodersity in the Tianjin Port near waters of Bohai Bay was low level and simple in community composition .