| LIU Dongyan,SUN Jun,LIU Zhe,CHEN Hongtao,WEI Hao,ZHANG Jing. 2004. The effects of spring-neap tide on the phytoplankton community development in the Jiaozhou Bay, China. Acta Oceanologica Sinica, (4):687－697 |
| The effects of spring-neap tide on the phytoplankton community development in the Jiaozhou Bay, China |
| The effects of spring-neap tide on the phytoplankton community development in the Jiaozhou Bay, China |
| Received:March 08, 2004 Revised:September 20, 2004 |
| DOI： |
| Key words:phytoplankton hydrodynamics nutrients spring to neap tide Jiaozhou Bay coastal waters |
| 中文关键词: phytoplankton hydrodynamics nutrients spring to neap tide Jiaozhou Bay coastal waters |
| 基金项目: |
| Author Name | Affiliation | E-mail | | LIU Dongyan | Marine Ecosystem Dynamic Laboratory, Ocean University of China, Qingdao 266003, China | | | SUN Jun | Key Laboratory of Marine Ecology & Environmental Science, Institute of Oceanology, Chinese Academy ofSciences, Qingdao 266071, China | sunjun@ms.qdio.ac.cn | | LIU Zhe | Institute of Physical Oceanography, Ocean University of China, Qingdao 266003, China | | | CHEN Hongtao | College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China | | | WEI Hao | Institute of Physical Oceanography, Ocean University of China, Qingdao 266003, China | | | ZHANG Jing | College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China | |
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| Abstract: |
| The development of the phytoplankton community was studied in the Jiaozhou Bay during the spring to neap tide in August 2001,through three cruises and a 15 d continuous observation.This investigation indicates that diatom cell abundance increased sharply following the end of a spring tide,from 9 cells/cm3 to a peak of 94 cells/cm3.The dominant species composition and abundance show a quick species sequence from spring to neap tide,and the dominant species at the start phase is Skeletomena costatum,then changes to Chaetoceros curvisetus,finally it changes to Eucampia zodiacus.Silicate concentration increases during spring tide,as a result of nutrient replenishment from the water-sediment interface,its initial average concentration in neap tide is 1.39 μmol/dm3 and reached the peak average concentration of 8.40 μmol/dm3 in spring tide.But the nitrogen concentration dropped due to dilution by the low nitrogen seawater from the Huanghai Sea,its initial average concentration in neap tide is 67 μmol/dm3 and decreased to the average concentration of 54 μmol/dm3 in spring tide.The degree of silicon limitation was decreased and phytoplankton,especially diatoms,responds immediately after nutrient replenishment in the water column.Skeletonmea costatum,as one of the dominant species in the Jiaozhou Bay,shows a quicker response to nutrient availability than Eucampia zodiacus and Chaetoceros curvisetus.It is proposed that dominant species composition and water column stability synchronously determine the development of phytoplankton summer blooms in the Jiaozhou bay. |
| 中文摘要: |
| The development of the phytoplankton community was studied in the Jiaozhou Bay during the spring to neap tide in August 2001,through three cruises and a 15 d continuous observation.This investigation indicates that diatom cell abundance increased sharply following the end of a spring tide,from 9 cells/cm3 to a peak of 94 cells/cm3.The dominant species composition and abundance show a quick species sequence from spring to neap tide,and the dominant species at the start phase is Skeletomena costatum,then changes to Chaetoceros curvisetus,finally it changes to Eucampia zodiacus.Silicate concentration increases during spring tide,as a result of nutrient replenishment from the water-sediment interface,its initial average concentration in neap tide is 1.39 μmol/dm3 and reached the peak average concentration of 8.40 μmol/dm3 in spring tide.But the nitrogen concentration dropped due to dilution by the low nitrogen seawater from the Huanghai Sea,its initial average concentration in neap tide is 67 μmol/dm3 and decreased to the average concentration of 54 μmol/dm3 in spring tide.The degree of silicon limitation was decreased and phytoplankton,especially diatoms,responds immediately after nutrient replenishment in the water column.Skeletonmea costatum,as one of the dominant species in the Jiaozhou Bay,shows a quicker response to nutrient availability than Eucampia zodiacus and Chaetoceros curvisetus.It is proposed that dominant species composition and water column stability synchronously determine the development of phytoplankton summer blooms in the Jiaozhou bay. |
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