摘要
秋季(11月底),桡足类针刺拟哲水蚤(Paracalanusaculeatus)和拟哲水蚤(Paracalanus)幼体为三亚湾优势种;强额孔雀哲水蚤(Pavocalanuscrassirostris)对浮游植物现存量的平均日摄食压力最大,各站平均为叶绿素a的(6.79±6.82)%,其次是针刺拟哲水蚤,平均为(5.97±5.67)%,亚强次真哲水蚤(Subeucalanussubcrassus)对浮游植物现存量的摄食压力较低,平均为(2.20±2.33)%,桡足类在秋季对浮游植物的日摄食压力占叶绿素a的(22.31±18.92)%。三亚湾属于生产力偏低的海区,对初级生产力的摄食压力以中型浮游动物针刺拟哲水蚤、锯缘拟哲水蚤(Paracalanusserrulus)、红纺锤水蚤(Acartiaerythraea)、微驼背隆哲水蚤(Acro calanusgracilis)和驼背隆哲水蚤(Acrocalanusgibber)为主,小型浮游动物的摄食压力也占一定的比例。
Paracalanus aculeatus and Paracalanus larvae were dominant copepods in autumn in the Sanya Bay. The average abundance of copepods was 8 197ind·m^(-3). The average daily feeding impacts of Pavocalanus crassirostris, Paracalanus aculeatus and Subeucalanus subcrassus on phytoplankton standing stock were (6.79±6.82)%,(5.97±5.67)%, and (2.20±2.33)%, respectively according to chlorophyll a content. The daily feeding impact of total copepods was (22.31±18.92)%. The primary production was mainly affected by meso-zooplankton, such as Paracalanus aculeatus,Paracalanus serrulus, Acartia erythraea, Acrocalanus gracilis and Acrocalanus gibber,and less by micro-zooplankton in the study waters.
出处
《热带海洋学报》
CAS
CSCD
北大核心
2004年第5期17-24,共8页
Journal of Tropical Oceanography
基金
国家自然科学基金项目(40106015)
广东省自然科学基金项目(032620)
中国科学院南海海洋研究所领域前沿项目(LYQY200309)
