| Yang Qingliang,Chen Qihuan,Lin Jinmei,Lin Gengrning,Chen Xingqun. 1999. Ecological characteristics of phytoplankton community from eutrophic waters in the Maluan Bay. Acta Oceanologica Sinica, (4):563－580 |
| Ecological characteristics of phytoplankton community from eutrophic waters in the Maluan Bay |
| Ecological characteristics of phytoplankton community from eutrophic waters in the Maluan Bay |
| Received:April 20, 1999 Revised:May 06, 1999 |
| DOI： |
| Key words:Eutrophication phytoplankton community marine ecology Xiamen |
| 中文关键词: Eutrophication phytoplankton community marine ecology Xiamen |
| 基金项目:This project was a part of the research on a state key project under contract No. 85-903-08-06 tackled duiing the "8th Five-Year Plan" period. |
| Author Name | Affiliation | | Yang Qingliang | Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | Chen Qihuan | Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | Lin Jinmei | Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | Lin Gengrning | Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China | | Chen Xingqun | Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China |
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| Abstract: |
| The present study is based on the analysis ohthe data collected in 10 cruises during the periods of 2 surveys (from May 1992 to January 1993 and from August 1993 to May 1994).The resulu show that the number of phytoplanktat species in highly eutrophic waters of the Maluan Bay is low,only 6-35 species from each cruise and 66 species in total from the 2 surveys.The phytoplankton abundance is high.The mean cell densities of phytoplankton from the net samples were 21 386×104cells/m3 for the first survey and 110 136×104 cells/m3 for the second survey,that from the water samples was 1 150.7 cells/cm3.The mean concentration of chlorophyll a reached 6.67 mg/m3.Both the species diversity (H') and evenness (J) were low,only 0.78 and 0.28,respectively.The temporal and spatial fluctuation of the cell density of phytoplankton was quite significant,caused mainly by contribution of pennate diatom Nitzschia delicatissima that often abudantly occurred in a closed waters rich in organic matter and could be taken as an mologic indicator of highly eutrophic harbour.The existence of good correlation between the cell density of Nitzxhia delicatissima and some environmental variables (e.g.PO4-3-P and COD,etc.),and the heterotrophic tendancy of this species are discussed,too. |
| 中文摘要: |
| The present study is based on the analysis ohthe data collected in 10 cruises during the periods of 2 surveys (from May 1992 to January 1993 and from August 1993 to May 1994).The resulu show that the number of phytoplanktat species in highly eutrophic waters of the Maluan Bay is low,only 6-35 species from each cruise and 66 species in total from the 2 surveys.The phytoplankton abundance is high.The mean cell densities of phytoplankton from the net samples were 21 386×104cells/m3 for the first survey and 110 136×104 cells/m3 for the second survey,that from the water samples was 1 150.7 cells/cm3.The mean concentration of chlorophyll a reached 6.67 mg/m3.Both the species diversity (H') and evenness (J) were low,only 0.78 and 0.28,respectively.The temporal and spatial fluctuation of the cell density of phytoplankton was quite significant,caused mainly by contribution of pennate diatom Nitzschia delicatissima that often abudantly occurred in a closed waters rich in organic matter and could be taken as an mologic indicator of highly eutrophic harbour.The existence of good correlation between the cell density of Nitzxhia delicatissima and some environmental variables (e.g.PO4-3-P and COD,etc.),and the heterotrophic tendancy of this species are discussed,too. |
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