| Sun Jun,Liu Dongyan,Qian Shuben. 2001. Preliminary study on seasonal succession and development pathway of phytoplankton community in the Bohai Sea. Acta Oceanologica Sinica, (2):251－260 |
| Preliminary study on seasonal succession and development pathway of phytoplankton community in the Bohai Sea |
| Preliminary study on seasonal succession and development pathway of phytoplankton community in the Bohai Sea |
| Received:December 25, 2000 Revised:March 23, 2001 |
| DOI： |
| Key words:Phytoplankton community seasonal changes species succession species sequence the Bohai Sea |
| 中文关键词: Phytoplankton community seasonal changes species succession species sequence the Bohai Sea |
| 基金项目:The study was supported by the National Natural Science Foundation of China under contract No. 49576298, 497901001,and G1999043703. |
| Author Name | Affiliation | | Sun Jun | Marine Ecosystem Dynamic Lab, Marine Life Science College, Ocean University of Qingdao, Qingdao 266003, China | | Liu Dongyan | Marine Ecosystem Dynamic Lab, Marine Life Science College, Ocean University of Qingdao, Qingdao 266003, China | | Qian Shuben | Marine Ecosystem Dynamic Lab, Marine Life Science College, Ocean University of Qingdao, Qingdao 266003, China |
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| Abstract: |
| Phytoplankton species composition and species succession were determined in 1998~1999 based on 2 nestle investigation cruises in the Bohai Sea and two monthly monitoring stations at Penglai and Changdao for 15 months.The seasonal succession and pathway of phytoplankton community in the Bohai Sea were discussed complementarily with history data.The main process of phytoplankton community development in the Bohai Sea was controlled by temperature and nutrient replenishes.There were two cell abundance peaks in an annual variation,the main peak in April and the secondary peak in September.In winter,the cell abundance was low due to the low temperature,the phytoplankton community was mainly made up of small-crled diatoms.In spring,the phytoplankton community was developed very quickly by small-celled diatom in suitable conditions of temperature and nutrients.In summer,the cell abundance decreased and big-celled diatoms became predominated.In autumn,because of the replenish of nutrient,big-celled diatoms and dinoflagellates formed another cell abundance peak.During the annual variation of phytoplankton community in the Bohai Sea,species succession was the main process of community development,the species sequence just occur at special areas and special periods.The evolution of phytoplankton community in the Bohai Sea accords with the hypothesis of Margalef's phytoplankton community of four stages.But the size feature is contrary to the hypothesis,which may be caused by nutrient replenish in autumn in Bohai Sea and the top to down control. |
| 中文摘要: |
| Phytoplankton species composition and species succession were determined in 1998~1999 based on 2 nestle investigation cruises in the Bohai Sea and two monthly monitoring stations at Penglai and Changdao for 15 months.The seasonal succession and pathway of phytoplankton community in the Bohai Sea were discussed complementarily with history data.The main process of phytoplankton community development in the Bohai Sea was controlled by temperature and nutrient replenishes.There were two cell abundance peaks in an annual variation,the main peak in April and the secondary peak in September.In winter,the cell abundance was low due to the low temperature,the phytoplankton community was mainly made up of small-crled diatoms.In spring,the phytoplankton community was developed very quickly by small-celled diatom in suitable conditions of temperature and nutrients.In summer,the cell abundance decreased and big-celled diatoms became predominated.In autumn,because of the replenish of nutrient,big-celled diatoms and dinoflagellates formed another cell abundance peak.During the annual variation of phytoplankton community in the Bohai Sea,species succession was the main process of community development,the species sequence just occur at special areas and special periods.The evolution of phytoplankton community in the Bohai Sea accords with the hypothesis of Margalef's phytoplankton community of four stages.But the size feature is contrary to the hypothesis,which may be caused by nutrient replenish in autumn in Bohai Sea and the top to down control. |
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