中文摘要：

分析了2008年春末夏初（5月和6月）利用浮游生物网（孔径160和500μm）采集的莱州湾浮游动物样品，对此季莱州湾浮游动物的生物量——个体粒级分布和生产力进行研究，构建了莱州湾浮游动物的标准生物量谱，并应用生物量谱理论Borgmann模型（1987）对莱州湾的渔业资源现存量进行了初步的估算。结果表明，5月和6月莱州湾浮游动物个体粒级（Log2含碳量）分布范围为-3-10。浮游动物的Sheldon型生物量谱的特征为：5月生物量高，表现为由双刺纺锤水蚤和中华哲水蚤、强壮箭虫构成的双峰曲线；6月生物量低，表现为由中华哲水蚤、强壮箭虫构成的单峰曲线。浮游动物混合粒级的日生产力和日周转率P／B值：5月为75mgC／m^2·d和0．20，6月为24mgC／m^2·d和0．16。5月的标准生物量谱线性方程y=-0．9629x＋14．893（R^2=0．60），6月y=0．9063x＋12．832（R^2=0．80）。基于Borgmann模型的估算，5月粒级为14～16的渔业生物的生物量为0．57gC／m^2，6月粒级12～25的渔业生物的生物量为0．1gC／m^。

英文摘要：

Biomass size distributions of zooplankton in the Laizhou Bay, Bohai Sea, were analyzed based on the samples collected by plankton nets （mesh size of 160μm and 500/μm） in May and June, 2011. Results showed that, in both months, zooplankton individuals from sam ples were in the size range of -3-10 （in logarithmatic carbon unit）, and continuous Sheldon-type biomass size spectra without gaps were found similarly. But in May, bhelcion-type momass size curve was composed of two major domes attributed by small copepod Acartia bifilosa and meso-individuals,Calanus sinicus, Sagitta crassa respectively. While in June, it had only one remarkable dome attributed by meso-individuals, C. sinicus and S. crassa. Total zooplankton biomass in June was much lower than that in May as the A. bifilosa declined greatly. Moreover, the production and P/B of zooplankton were calculated as 75 mg C/m^2· d, 0.20 for May and 24 mg C/m^2· d, 0.16 for June. Normalized biomass size spectra were also constructed on a double log plot and fitted closely with a linear regression line with equations y =-0. 962 9x ＋14. 893 （R^2 =0.60） for May and y=-0. 9063x＋12. 832 （R^2= 0.80） for June. According to theoretical Borgmann model （1987）, the fish biomass is predicted to be 0.57 gC/m^2 in the size range of 14-16 in May and 0.1 gC/m^2 in the size range of 12-25 in June.