State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China.
Environ Monit Assess. 2011 May;176(1-4):157-67. doi: 10.1007/s10661-010-1573-6. Epub 2010 Jun 22.
A total of 11 sediment samples were collected from the sites along Haihe River-Bohai Bay, with site 1 at the beginning of Haihe River and site 11 in Bohai Bay, about 150 km away from site 1. Quinone profiles were used for the analysis of microbial community as influenced by pollutants in water and sediments, such as heavy metals, and other environmental factors. Nineteen species of quinones were found at site 1 while only six species at sites 10 and 11. Both the diversity of quinone species (DQ) and the number of quinones were higher in the sediments from Haihe River and the near-sea area of Bohai Bay than in those from the deep-sea area. The β diversity values were significantly higher, while Jaccard indexes of similarity were much lower among non-contiguous pairs of sites as compared with the contiguous ones. Cluster analysis indicated that quinone profiles may be grouped into two main clusters (sites 1-7 and sites 8-11), and there were higher similarities within the groups than between groups. Quinone species composition varied at different sites. Ubiquinones such as UQ-8, UQ-9, and UQ-10 and menaquinones such as MK-6, MK-7, MK-8 were isolated from all the sites and accounted for the largest proportions. Pearson correlation analysis revealed that both the number of quinone species and DQ correlated positively with total organic carbon contents in water and sediments, but negatively correlated with salinity and electroconductivity and did not correlate significantly with heavy metal contents in water.
共采集了海河-渤海湾沿线 11 个沉积物样品，采样点 1 位于海河的起点，采样点 11 位于渤海湾，距离采样点 1 约 150 公里。醌类物质图谱被用于分析水和沉积物中污染物（如重金属）和其他环境因素对微生物群落的影响。在采样点 1 发现了 19 种醌类物质，而在采样点 10 和 11 仅发现了 6 种。海河和渤海近岸沉积物中的醌类物质种类（DQ）多样性和醌类物质数量均高于深海沉积物。非连续采样点之间的β多样性值明显较高，而相似性 Jaccard 指数则明显较低。聚类分析表明，醌类物质图谱可能分为两个主要聚类（采样点 1-7 和采样点 8-11），组内的相似性高于组间的相似性。不同采样点的醌类物质组成存在差异。所有采样点均分离出泛醌如 UQ-8、UQ-9 和 UQ-10 以及甲萘醌如 MK-6、MK-7 和 MK-8，它们占比最大。Pearson 相关分析表明，水和沉积物中醌类物质的种类数量和 DQ 与总有机碳含量呈正相关，与盐度和电导率呈负相关，与水体重金属含量无显著相关性。
