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ROLE OF PHOSPHORUS CYCLING IN ALGAL METABOLISM AND ALGAL SUCCESSION IN LAKE DONGHU CHINA
WANG J; LIU J K; INST HYDROBIOL, ACADEMIA SINICA, WUHAN 430072, CHINA
1991
Source PublicationArchiv fuer Hydrobiologie
ISSN0003-9136
Volume120Issue:4Pages:433-446
AbstractThe role of phosphorus cycling in algal metabolism was studied in a shallow lake, Donghu, in Wuhan using the methods of measuring cell quota C, N and P, and calculating nutrients uptake rate by algal photosynthesis. The mean daily phosphorus uptake rate of phytoplankton varied between 0.04-0.11 and 0.027-0.053 g/m2/d in station I and station II respectively. The turnover time of phosphorus in phytoplankton metabolism ranged from 0.75-5.0 days during 1979-1986. The available P was 0.176 (.+-. 0-.156) g/m3 (mean .+-. SD) in 1982 and 0.591 (.+-. 0.24) g/m3 in 1986. The relationship between P/B ratio (Y) and TP (X:mg/l) was described by the following regression equation Y = 1.163 + 0.512 logX (r = 0.731, P < 0.001). The dynamics of algal biomass and algal species succession were monitored as the indicators of environmental enrichment. The small-sized algae have replaced the blue-green algae as the dominant species during 1979-1986. The small-sized algae include Merismopedia glauca, Cryptomonas ovata, Cryptomonas erosa, several species Cyclotella. There has been drastic decrease in algal biomass and an obvious increase in P/B ratio. A nutrient competition hypothesis is proposed to explain the reason of the disappearance of blue-green algae bloom. The drastic change in algal size and the results in high P/B ratio (reaching a maximum mean daily ratio of 1.09 in 1986) may suggest a transition of algal species from K-selection to r-selection in Lake Dunglu.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/17659
Collection期刊论文
Corresponding AuthorWANG J; INST HYDROBIOL, ACADEMIA SINICA, WUHAN 430072, CHINA
Recommended Citation
GB/T 7714
WANG J,LIU J K,INST HYDROBIOL, ACADEMIA SINICA, WUHAN 430072, CHINA. ROLE OF PHOSPHORUS CYCLING IN ALGAL METABOLISM AND ALGAL SUCCESSION IN LAKE DONGHU CHINA[J]. Archiv fuer Hydrobiologie,1991,120(4):433-446.
APA WANG J,LIU J K,&INST HYDROBIOL, ACADEMIA SINICA, WUHAN 430072, CHINA.(1991).ROLE OF PHOSPHORUS CYCLING IN ALGAL METABOLISM AND ALGAL SUCCESSION IN LAKE DONGHU CHINA.Archiv fuer Hydrobiologie,120(4),433-446.
MLA WANG J,et al."ROLE OF PHOSPHORUS CYCLING IN ALGAL METABOLISM AND ALGAL SUCCESSION IN LAKE DONGHU CHINA".Archiv fuer Hydrobiologie 120.4(1991):433-446.
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