摘要
在广西钦州湾海域设置15个调查站位,分别于2010年5月(春季)、8月(夏季)、11月(秋季)和2011年2月(冬季)采集表层海水,用Shannon-Wiener多样性指数和Pielou均匀度指数分析该海域浮游植物种类组成、优势种类、丰度的变化以及群落多样性等群落结构特征。共鉴定浮游植物79属193种(包括变型和变种),隶属于6个门,硅藻种类最多,共48属149种,占总种类的77.2%,其种数和丰度都占绝对优势,平均丰度为10.47×104cells/L;其次为甲藻,16属28种,占总种类的14.5%,平均丰度为0.46×104cells/L。浮游植物丰度0.49×104～67.74×104cells/L,平均值为11.94×104cells/L,丰度变化为典型双峰型,春秋季高,夏冬季低。调查期间共出现10种优势种,不同季节优势种既有交叉又有演替。浮游植物群落的多样性指数冬季最高,春季最低。
Phytoplankton composition, abundance, community structure, dominant species and diversity in coastal waters of Qinzhou Bay in Guangxi were investigated in each season in 2010. The results showed that a total of 79 genera and 193 species of phytoplankton were identified, belonging to six phyla. The cells abundance of phytoplankton varied from 0.49× 10^4 to 67.74 × 10^4cells/L with an average of 11.94× 10^4cells/L. The largest component was Diatoms（the average of 10.47 × 10^4cells/L） containing 48 genera and 149 species,occupied 77.2% of species. Dinoflagellate（the average of 0.46× 10^4cells/L） was the next most common with 17genera and 28 species,occupied 14.5% of species. Annual variations of the phytoplankton community in Qinzhou Bay showed a typical two-peak cycle,with the highest cell abundance peak appeared in Spring and Autumn,the lowest recorded in Summer and Winter. There were 10 kinds of domi- nant species during the investigation,common species and dominant species were euryhalinous, eurythermic and eurytopic species,There was succession of species in different seasons, never- theless,some species revealed seasonal cross. Shannon-Wiener index peaked in Winter and minimized in Spring.
出处
《广西科学》
CAS
2012年第3期268-275,共8页
Guangxi Sciences
基金
广西自然基金北部湾重大专项项目(2010GXNSFE013001)
广西科学院基本业务费项目(10YJ25HY01)资助
关键词
浮游植物
群落特征
种类
丰度
多样性
phytoplankton, community characteristics, species, abundance, diversity
