Anammox response to natural and anthropogenic impacts over the Yangtze River

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Anammox response to natural and anthropogenic impacts over the Yangtze River
	Chen, Liming ; Liu, Sitong ; Chen, Qian ; Zhu, Guibing ; Wu, Xuan ; Wang, Jiawen ; Li, Xiaofei ; Hou, Lijun ; Ni, Jinren
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-05-15
卷号	665 页码:171-180
关键词	Anammox bacteria Contribution to N-2 production Spatial pattern Sediment type The Three Gorges Dam The Yangtze River
ISSN号	0048-9697
英文摘要	Increasing attention has been paid to anaerobic ammonium oxidation (anammox) in river ecosystems due to their special role in the global nitrogen cycle from land to the ocean. This study have revealed the spatial patterns of anammox bacterial response to geographic characteristics and dam operation along the Yangtze River, using N-15 tracers and molecular analyses of microbial communities in sediment samples over a 4300 km continuum. Here we found a significant temperature-related increase in anammox bacterial abundance and alpha diversity from mountainous area in the upper, fluvial plain area in the middle and lower reach, to the river mouth. In contrast, an opposite trend in anammox contribution to N-2 production (ra) was observed down the Yangtze River due to enhanced denitrification induced by spatial heterogeneity of total organic carbon. Interestingly, the Three Gorges Dam resulted in an intensive erosion and thus a change from muddy to sandy sediments within 400 km downstream the dam, which readjusted the anammox community characterized with a decreased bacterial diversity and enhanced anammox contribution to nitrogen loss. Our study highlights the importance of natural and anthropogenic impacts on anammox bacterial community and function in a complex large river ecosystem. (c) 2019 Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43061]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810016, Qinghai, Peoples R China 2.Minist Educ China, Key Lab Water & Sediment Sci, Beijing 100871, Peoples R China 3.Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China 4.Chinese Acad Sci, State Key Lab Environm Aquat Qual, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 5.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China
推荐引用方式 GB/T 7714	Chen, Liming,Liu, Sitong,Chen, Qian,et al. Anammox response to natural and anthropogenic impacts over the Yangtze River[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,665:171-180.
APA	Chen, Liming.,Liu, Sitong.,Chen, Qian.,Zhu, Guibing.,Wu, Xuan.,...&Ni, Jinren.(2019).Anammox response to natural and anthropogenic impacts over the Yangtze River.SCIENCE OF THE TOTAL ENVIRONMENT,665,171-180.
MLA	Chen, Liming,et al."Anammox response to natural and anthropogenic impacts over the Yangtze River".SCIENCE OF THE TOTAL ENVIRONMENT 665(2019):171-180.