The result indicates that phytoplankton can produce protein-like and humic-like fluorescent matter. The protein-like fluorescence is composed of tyrosine-like fluorescence and tryptophan-like fluorescence. The main position of protein-like fluorescent peak is Ex_(max)/Em_(max)=270 nm/290～310 nm.
But the study on the function and status of NO in oceanic ecological system has not been reported. It is necessary to study the effect laws of NO on marine phytoplankton growth, for the purpose of understanding the influence of NO on oceanic ecological system and the process of biological nitrogen cycle.
The results show that the contents and distributions of mercury in Jiaozhou Bay were affected by coastal runoff and phytoplankton bloom The linear relationship between organic mercurv and the COD and the exponential relationship between inorganic mercury and chl-a implied that marine phytoplankton could absorpt mercury in sea water and played an important role in controling the speciations of mercury in the Bay.
5) According to the similitude index, phytoplankton community in Hangzhou Bay can be divided into inshore phytoplankton community and offshore phytoplankton community, and the boundary of their geographic distribution was the same as above.
In spring, the phytoplankton community is mainly made of small cell diatoms, and in autumn the phytoplankton community is characterized by big cell diatoms coexisting with dinoflagellates.
The preliminary studies of nitrate、phosphate、iron、silicate limitation to phytoplankton was conducted in Jiaozhou Bay with in-situ experiments from August 1998 to February 1999. Size-fractionated Chlorophyll a results showed that phytoplankton growth was limited singly by nitrogen or co-limited by both nitrogen and phosphorus in summer 1998. Phytoplankton community was co-limited by N and P in autumn 1998. But Si was the primary nutrient limiting to phytoplankton growth in winter 1999.
A relationship:[Chl-a] = A xe-B[PO4] (A = 16.6,B = 1.37), was derived in thes experiment The phytoplanktonic biomass logged DIP content by about 2 days.
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.
A quantitative method for measuring particulate organic detrital carbon in Dong-hu Lake Wuhan, is described. Total particulate organic carbon was determined from the sediments caught in traps suspended in situ for 24 h. The numbers of zooplankters were counted and the volume of phytoplankters was measured. Organic detrital carbon content was calculated from the differences between total particulate organic carbon and plankton carbon.By means of the methods given in this paper, the sedimentation rates of par...
The lowest addition of mercury so far, 0.1μg/L Hg, was used in CEEs for the study of mercury flux, speciation and budget since it was much closer to the marine environment and at the noneffective level on the biota of lower trophic levels in CEEs. The removal behavior of mercury in a water column of a CEE can be described by firstorder kinetics for both the total and the particulate mercury in a spiked bag. The removal rate of mercury depends on the primary production and the characteristics of phytoplankto...
浮游植物
phytoplankton 
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