南麂列岛海域硅藻和甲藻群落的分布特征  

ECOLOGICAL DISTRIBUTION CHARACTERISTICS OF DIATOMS AND DINOFLAGELLATES IN NANJI ISLANDS SEA AREA,ZHEJIANG PROVINCE

作　　者：萧云朴 李扬[2] 李欢[2] 吕颂辉[2,3] 江天久[2,3] 尤胜炮 

机构地区：[1]浙江省平阳县海洋与渔业局,浙江平阳325400 [2]华南师范大学生命科学学院广东省高等学校生态与环境科学重点实验室,广东广州510631 [3]暨南大学赤潮与水环境研究中心,广东广州510632 [4]浙江南麂海洋环境监测站,浙江平阳325400

出　　处：《华南师范大学学报（自然科学版）》2009年第2期100-105,共6页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(30700046);广东省自然科学基金资助项目(7300190);国家高新技术发展资助项目(2006AA09Z178);温州市科技计划资助项目(S2006A007)

摘　　要：于2006年4月—2007年3月采集浙江南麂列岛海域水样,研究了硅藻和甲藻群落在该海域的种类组成、生态分布特征和季节动态.共鉴定浮游植物93种,其中硅藻35属68种,甲藻11属21种.南麂海域浮游植物细胞丰度较高,年平均细胞丰度达到3.19×105cells.L-1.硅藻集群的高峰区主要集中在夏季和秋季,细胞在表层水体的含量高于底层水体,调查期间共记录硅藻赤潮事件1起,发生于2006年8月,优势种类是中肋骨条藻.甲藻赤潮仅在春季(5月)发生,优势种类为原甲藻种类,包括三角棘原甲藻和东海原甲藻,分别在5月中旬和5月下旬先后引发赤潮,甲藻在表层水体含量高于底层水体.A survey was carried out from April 2006 to March 2007 in four sampling stations in Nanji Islands Sea Area, Zhejiang Province. Water samples, ambient chemical, physical and meteorological data were examined. Species composition, ecological distribution and seasonal dynamics of both diatoms and dinoflagellates were investi- gated. 93 taxon of phytoplankton were identified. Diatoms were the most diversified assemblage that 68 taxa belonging to 35 genera were found. The dinoflagellates ranked second with 21 taxa in 11 genera. The annual average phytoplankton cell abundance was 3. 19 × 10^5cells · L^-1. The highest and higher cell abundance of diatoms almost occurred in the summer and autumn. The diatom cell abundance in water surface levels was higher than that in bottom levels. One bloom of diatoms has been recorded, arising in August, and the dominant taxon was Skeletonema costaturn. Dinoflagellate blooms just occurred in the spring and the dominant taxa were Prorocentrun species. The blooms of P. triestinum and P. donghaiense occurred in middle May and later May respectively. More dinoflagellate cells distributed in the upper water surface levels than in bottom levels.

关 键 词：硅藻 甲藻 南麂列岛海域 分布特征 

分 类 号：Q178.53[生物学—水生生物学]