闽东沿岸2004～2006年浮游植物生态特征研究

Ecological characteristics of phytoplankton in coastal waters of eastern Fujian from 2004 to 2006

根据闽东海洋环境监测中心2004年-2006年闽东沿岸生态调查的资料,分析和研究了闽东沿岸浮游植物的生态特征.共鉴定出浮游植物的种类3个门39属共134种,其中硅藻门的种类占总种数的80%,为该调查海域主要门类.主要优势种是中肋骨条藻(Skeletonema costatum)、旋链角毛藻(Chaetoceros curvisetus)、尖刺拟菱形藻(Pseudo-nitzschia pungens)和丹麦细柱藻(Leptocylindrus danicus)等.浮游植物的丰度分布,呈现由调查海域东北侧向西南侧、由近岸向远岸减少的空间特征,夏季高、春季低的季节变化特点,并且有逐年减少的年际变化趋势.本调查海域浮游植物多样性指数较高,群落较稳定.

Phytoplankton abundance and distribution were studies in Mindong coastal waters from 2004 to 2006 with data from Mindong Marine ＆ Environment Monitor Center. A total of 134 species belonging to 39 genera （3 phyla） of phytoplankton were recorded. Among them diatom species accounted for 80% of the total. As results the most dominant species were Skeletonema costatum, Chaetoceros curvisetus, Pseudo-nitzschia pungens and Leptocylindrus danicus. The phytoplankton abundance in waters studied decreased from northeast to southwest and from nearshore to offshore. It was higher in summer than in spring and decreased from 2004 to 2006. On the whole, the phytoplankton community in coastal waters of eastern Fujian was stable and high in diversity.