Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs

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	Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs
	Xu, Jun 2; Zhang, Min 1
刊名	ECOLOGICAL INDICATORS
	2012-03-01
卷号	14 期号:1 页码:189-196
关键词	Stable nitrogen isotope Seston Sedimentary organic matter Zooplankton Chironomus Oligochaete Anthropogenic nitrogen Bioindicator Biomonitoring Eutrophication Lake
ISSN号	1470-160X
通讯作者	Zhang, M (reprint author), Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
中文摘要	The increased nitrogen loading from anthropogenic sources has affected aquatic ecosystems and has cascaded through food webs worldwide. Therefore, the evaluation of ecological impacts of anthropogenic nitrogen has become increasingly important. In this paper, we investigated the effect of nutrient enrichment in the planktonic and benthic food webs of a hypereutrophic urban lake using stable nitrogen isotope analysis. The stable isotope mixing model revealed that zooplanktons rely mainly on planktonic nitrogen, and that Chironomus and Oligochaete rely mainly on benthic nitrogen. The stable nitrogen isotope signatures of seston and the sediment organic matter can be a sensitive indicator, because they are correlated with the nitrogen content of water and sediment. Furthermore, the relationships between the stable nitrogen isotope values of primary production and primary consumers indicate that polluted nitrogen has transferred through the planktonic and benthic food webs, respectively. For primary consumers, the stable nitrogen isotope values of zooplanktons were correlated to nitrogen concentrations of water, and the stable nitrogen values of Chironomus and Oligochaete were correlated to the nitrogen content of sediment, respectively. This finding indicates that these primary consumers can be used as promising bioindicators of the anthropogenic nitrogen input in planktonic and benthic food webs, respectively. Our results suggest that stable nitrogen isotope of primary consumers can act as bioindicators to detect the dispersal patterns of anthropogenic contamination and understand the incorporation into and movement of waste nitrogen in pelagic and benthic food chains. (C) 2011 Elsevier Ltd. All rights reserved.
英文摘要	The increased nitrogen loading from anthropogenic sources has affected aquatic ecosystems and has cascaded through food webs worldwide. Therefore, the evaluation of ecological impacts of anthropogenic nitrogen has become increasingly important. In this paper, we investigated the effect of nutrient enrichment in the planktonic and benthic food webs of a hypereutrophic urban lake using stable nitrogen isotope analysis. The stable isotope mixing model revealed that zooplanktons rely mainly on planktonic nitrogen, and that Chironomus and Oligochaete rely mainly on benthic nitrogen. The stable nitrogen isotope signatures of seston and the sediment organic matter can be a sensitive indicator, because they are correlated with the nitrogen content of water and sediment. Furthermore, the relationships between the stable nitrogen isotope values of primary production and primary consumers indicate that polluted nitrogen has transferred through the planktonic and benthic food webs, respectively. For primary consumers, the stable nitrogen isotope values of zooplanktons were correlated to nitrogen concentrations of water, and the stable nitrogen values of Chironomus and Oligochaete were correlated to the nitrogen content of sediment, respectively. This finding indicates that these primary consumers can be used as promising bioindicators of the anthropogenic nitrogen input in planktonic and benthic food webs, respectively. Our results suggest that stable nitrogen isotope of primary consumers can act as bioindicators to detect the dispersal patterns of anthropogenic contamination and understand the incorporation into and movement of waste nitrogen in pelagic and benthic food chains. (C) 2011 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Biodiversity Conservation ; Environmental Sciences
研究领域[WOS]	Biodiversity & Conservation ; Environmental Sciences & Ecology
关键词[WOS]	STABLE-ISOTOPE SIGNATURES ; FRESH-WATER SYSTEMS ; EUTROPHIC LAKE ; ORGANIC-MATTER ; TROPHIC STATE ; RATIOS ; INDICATORS ; DELTA-N-15 ; BAY ; VARIABILITY
收录类别	SCI
资助信息	National Basic Research Program of China[2008CB418001-1, 2007CB109205]; National Natural Science Foundation of China[30870428]; Water Pollution Control and Management Project of China[2008ZX07101-001]; State Key Laboratory of Lake Science and Environment; K.C. Wong Education Foundation; Chinese Academy of Sciences
语种	英语
WOS记录号	WOS:000297564600023
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/16721]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Xu, Jun,Zhang, Min. Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs[J]. ECOLOGICAL INDICATORS,2012,14(1):189-196.
APA	Xu, Jun,&Zhang, Min.(2012).Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs.ECOLOGICAL INDICATORS,14(1),189-196.
MLA	Xu, Jun,et al."Primary consumers as bioindicator of nitrogen pollution in lake planktonic and benthic food webs".ECOLOGICAL INDICATORS 14.1(2012):189-196.