期刊
JOURNAL OF SEA RESEARCH
卷 61, 期 3, 页码 125-132出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seares.2008.11.005
关键词
Diatom; Sediment; Resting Stages; Nitrate; Silicate; MPN
资金
- Major State Basic Research Development Program of China [2005CB422305]
- Natural Science Foundation of Fujian Province of China [2006J0145]
- Open Research of Key Laboratory of Marine Ecosystem and Biogeochemistry (LMEB)
- SOA [LMEB200707]
The seasonal abundance of planktonic diatoms in the water column of Xiamen Bay, China, was investigated monthly during 2007 and 2008, and the viability of their resting stages in the bottom sediments was estimated using the extinction dilution method (most probable number method, MPN). The dominant genera in the planktonic diatom Community were Skeletonema. Chaetoceros and Thalassiosira, whose viable resting stages were also the most abundant in the sediments. The highest concentration of viable diatom resting stages occurred I to 2 months after the maximum cell density of diatom communities occurred in the water column. The viability of Skeletonema resting cells increased in the sediments in either April or May at each station before the start of a Skeletonema bloom in June or July, suggesting that the germination of resting cells suspended in water could have influenced the blooming of Skeletonema species in the summer. Canonical correspondence analysis and multiple linear regression analysis revealed that the MPN of viable diatom resting stages was negatively correlated with silicate (p<0.05) and nitrate concentration (p>0.05). The distribution of viable Chaetoceras resting spores and viable Skeletonema resting cells was different, possibly due to the different silicate cost in sea water during the formation of resting spores and resting cells, and also their survival ability in unfavorable environments. (C) 2008 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据