Gauss distribution function was utilized to describe the distribution of the mean percentage of the equivalent spherical diameter (BSD) of marine phytoplankton.
Thus, in the frame of globe climate change and human activity on nature, the phytoplankton community in Jiaozhou bay showed a tendency of succession that warm water species increase and cold water species decrease on temperate, and favored nitrogen species increase on nutrient physiology.
The natural phytoplankton community at station C3 in the Jiaozhou Bay of December, 2003 was cultured by combining dilution technique and method of nutrients "all-minus-one" enrichment.
The main results included:1. 60 species (genera) of phytoplankton were found, and Bacillariophyta dominated the phytoplankton composition, amounting to 53.33% of the total species.
mg/L. The diversity indices of phytoplankton composition in different seasons ranged from 2.613 to 4.202 (Shannon-Wiener's index). Hequan Lake is sanitary except for in Augest and November 1999 and in March 2000,the trophyic type is eutrophication.
Iron, which could help phytoplankton grow rapidly, is a micronutrient essential to the synthesis of enzymes required for photosynthesis in the oceanic environment.
A method involving gradient elution and operating at 15°C is proposed for the separation of several polar and non-polar mono- and divinyl chlorophylls from etiolated tissues of higher plants and from marine phytoplankton.
The structural complexity of the phytoplankton community was evaluated using the index of cenotic significance (ICS) and derivative calculation coefficients.
The species and size structure of the phytoplankton community was found to have changed significantly and the community biomass, to have increased in the course of long-term succession.