Study on nutrient limitation of phytoplankton in southern Taiwan Strait during the summer

• Main Authors: 胡俊, 柳欣, 张钒, 黄邦钦, 洪华生
• Format: Journal Article
• Language: Chinese
• Published: 国家海洋局第三海洋研究所;福建省海洋学会 01.11.2008
• Subjects: nutrients limiting factor; phytoplankton; Strait; upwelling ecosystem; 上升流区; 台湾海峡; 浮游植物; 营养盐限制因子

2004年7~8月,2005年7月及2006年8月分别在台湾海峡南部海区5个测站进行了浮游植物生长的营养盐限制船基培养实验.结果表明,在调查期间,夏季台湾海峡南部海区浮游植物营养盐的限制状态存在一定的时空差异,氮是浮游植物生长的主要限制因子,并与上升流的存在与否无关;磷的弱限制偶尔会发生,这与涌升水的N/P比值有关.而硅只有在近岸上升流区形成高氮和磷的补充情况下偶尔才会产生微弱限制.在陆架外缘区,浮游植物限制状态较稳定,表现为受N的限制为主导的N、P的共同限制,P限制相对较弱. 【英文摘要】 Nutrient factors limiting the growth of phytoplankton community were studied by nutrient enrichment experiments at 5 stations in South Taiwan Strait in 3 summer cruises from 2004 to 2006.The results implied that the growth of phytoplankton in upwelling ecosystem was mainly N-limitation,which showed little different among the 3 summer.Whereas slight P-limitation only happened during the summer cruises of 2005 and 2006,because the lower vertical transport of phosphate induced by upwelling high N/P ratio water...