Application of subfossil Bosmina and its delta C-13 values in tracing the long-term food web dynamics of shallow eutrophic lakes: A case in Taihu Lake, southeast China

	Application of subfossil Bosmina and its delta C-13 values in tracing the long-term food web dynamics of shallow eutrophic lakes: A case in Taihu Lake, southeast China
	Cheng, Longjuan; Kattel, Giri; Xue, Bin; Yao, Shuchun; Li, Lingling; Liu, Jinliang
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020
卷号	730
英文摘要	Cladoceran subfossil assemblages have been used successfully to trace the signals of long-term changes in lake eutrophication. However, their potential for reconstructing food webs has not yet been explored extensively. Here, we assess whether the stable carbon isotope analysis (SCIA) of subfossil Bosmina can be used to reconstruct the eutrophication and food web history of a shallow lake in southeast China. Two Pb-210-dated sediment cores were collected from the western and central parts of Taihu Lake, one of the largest eutrophic lakes in the region. Multiproxy analyses of the cores were performed, including of the subfossil Bosmina assemblages, stable carbon isotopes of subfossil Bosmina (delta C-13(s-bos)) and bulk sediment (delta C-13(org)), total organic carbon (TOC), loss on ignition (LOI), C/N, total nitrogen (TN), and total phosphorous (TP). Stable carbon isotopes of living algae (delta C-13(alg)) and Bosmina (delta C-13(l-bos)) were also measured at the same sampling locations. The delta C-13(s-bos) gradually declined over time with reciprocal increases in the assemblages of subfossil Bosmina and total cladocerans and in the TOC, LOI, TN and TP in both cores. The delta C-13(alg) and delta C-13(l-bos) values further revealed depleted C-13. The changes in the delta C-13(s-bos) in relation to the other proxies indicated rapid nutrient enrichment and a possible shift in the food web in Taihu Lake, providing new insight into the reconstruction of food webs and eutrophication in shallow lakes in southeast China. (C) 2020 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20222]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Cheng, Longjuan,Kattel, Giri,Xue, Bin,et al. Application of subfossil Bosmina and its delta C-13 values in tracing the long-term food web dynamics of shallow eutrophic lakes: A case in Taihu Lake, southeast China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,730.
APA	Cheng, Longjuan,Kattel, Giri,Xue, Bin,Yao, Shuchun,Li, Lingling,&Liu, Jinliang.(2020).Application of subfossil Bosmina and its delta C-13 values in tracing the long-term food web dynamics of shallow eutrophic lakes: A case in Taihu Lake, southeast China.SCIENCE OF THE TOTAL ENVIRONMENT,730.
MLA	Cheng, Longjuan,et al."Application of subfossil Bosmina and its delta C-13 values in tracing the long-term food web dynamics of shallow eutrophic lakes: A case in Taihu Lake, southeast China".SCIENCE OF THE TOTAL ENVIRONMENT 730(2020).