摘要
大鹏湾位于南海北部,属半封闭海湾,目前有各种类型网箱60多个。本试验于大鹏湾的深水抗风浪网箱养殖区投放试验挂板,以测定污损生物的附着状况,并利用Shannon-Wiener指数进行群落的多样性分析,试验周期为1年。共记录污损生物53种,月平均附着生物量为277.37g/m2,最高在9月份;季度平均生物量为4497.18g/m2,最高在冬季;垂直分布方面,最高生物量在1～2m水层。全年各月均有污损生物附着,优势种是网纹藤壶,其次是多室草苔虫、翡翠贻贝和变化短齿蛤。种类的多样性指数(H′)和均匀度(J)均以春季为最高,冬季最低;种类丰度(d)则以秋季最高,春季最低;优势度(I)则以冬季最大,春季最小。
Dapeng Bay, located in South China Sea, is a semiclose bay with more than 60 cages covering nearly 300 hm2. In order to examine the settlement and status of fouling organism, the exposed test panels, with the area of 0.062 5 m2 for each, were laid down in the cage water area of Dapeng Bay for a 12 months period experiment. ShannonWiener index was used to analyze the species diversity. The panels were set at the depths of 1 m, 2 m, 3 m and 4 m. During the experiment period, a total number of 53 species of fouling organisms were recorded. The monthly average biomass of fouling organism was 277.37 g/m2, and the highest amount appeared in September. The seasonal average biomass was 4 497.18 g/m2, and the highest amount appeared in winter. The highest biomass appeared in the water depth of 1-2 m in terms of vertical distribution. The attachment of fouling organism occurred throughout the year, and the first dominant species was Balanus reticulatus, followed by Bugula neritina, Perna viridis and Brachidontes variabilis. The diversity index (H′) and evenness (J) for each species was the highest in spring and lowest in winter. The highest and the lowest dominancy (I) were recorded separately in winter and spring.
出处
《中国水产科学》
CAS
CSCD
北大核心
2003年第5期414-418,共5页
Journal of Fishery Sciences of China
基金
国家"十五"攻关项目(2001BA5051302)
广东省重大科技兴海项目(A200099C01)
广东省重点科技计划项目(A3050305).
