On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication

doi:10.1111/jbi.14727

	On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication
	Zhao, Yanjie 3; Wang, Rong 1,3; Xu, Min 2; Zhang, Enlou 3
刊名	JOURNAL OF BIOGEOGRAPHY
	2023-09-27
页码	13
关键词	community dynamics change freshwater ecosystems homogenization Jaccard dissimilarity spatio-temporal
ISSN号	0305-0270
DOI	10.1111/jbi.14727
通讯作者	Wang, Rong(rwang@niglas.ac.cn)
英文摘要	AimOver the last century, lakes all over the world have experienced significant eutrophication and become more susceptible to critical transitions. This has prompted a growing need to understand how community dynamics shift following ecological perturbations. This study aims to elucidate the present status, spatial patterns and determinants of biological diversity, and how they have changed in response to alterations driven by eutrophication.LocationLakes of East China, mostly in the Yangtze River Basin.TaxaBacillariophyceae (163 species in 33 genres, see taxa names in Appendix S1).MethodsThe environmental conditions of over 60 lakes were assessed based on parameters such as water quality, physical characteristics and biogeochemical constituents. Surface sediment samples and high-resolution sediment records were collected to quantify the biodiversity of diatom communities, and principal component analysis (PCA) was used to determine the major environmental gradients. Meanwhile, linear regression, canonical correlation analysis and Mantel tests were used to quantify the correlations between variables.ResultsBiodiversity metrics showed no distinct geographic patterns, although areas near large lakes showed comparatively high evenness. Smaller pairwise dissimilarities were observed among hypereutrophic lakes in comparison to lakes with a lower trophic status. The past century has witnessed a decrease in both pairwise dissimilarity and the standard deviation of evenness. A significant statistical association was found between dissimilarity and ionic concentration and composition in the surface sediment of lakes, rather than nutrient levels.Main ConclusionsFollowing regional eutrophication and human disturbance, a significant reduction in biodiversity differentiation was observed in lakes located in East China. Currently, the dominant factor in determining the beta diversity of diatom communities is geochemical conditions rather than nutrient concentrations. Long-term stress caused by cultural eutrophication may also have altered the dominant determinant of regional biodiversity and diatom community dynamics.
资助项目	We thank Patrick Doncaster and Wenxiu Zheng for helpful discussion on the study design. Thanks also to Thibault Leboucher and the anonymous reviewer for constructive comments on the earlier version of this manuscript and Perry Iles for proofreading. This s[42307561] ; We thank Patrick Doncaster and Wenxiu Zheng for helpful discussion on the study design. Thanks also to Thibault Leboucher and the anonymous reviewer for constructive comments on the earlier version of this manuscript and Perry Iles for proofreading. This s[42171161] ; National Natural Science Foundation of China[XDB310403] ; Strategic Priority Research Program of the Chinese Academy of Sciences[Y2021086] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
WOS关键词	ECOSYSTEM SERVICES ; PALEOLIMNOLOGICAL DATA ; TOTAL PHOSPHORUS ; SHALLOW LAKES ; FRESH-WATER ; DIVERSITY ; ASSEMBLAGES ; CONSERVATION ; DISSOLUTION ; SEDIMENTS
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography
语种	英语
出版者	WILEY
WOS记录号	WOS:001070946600001
资助机构	We thank Patrick Doncaster and Wenxiu Zheng for helpful discussion on the study design. Thanks also to Thibault Leboucher and the anonymous reviewer for constructive comments on the earlier version of this manuscript and Perry Iles for proofreading. This s ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/42748]
专题	中国科学院南京地质古生物研究所
通讯作者	Wang, Rong
作者单位	1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yanjie,Wang, Rong,Xu, Min,et al. On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication[J]. JOURNAL OF BIOGEOGRAPHY,2023:13.
APA	Zhao, Yanjie,Wang, Rong,Xu, Min,&Zhang, Enlou.(2023).On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication.JOURNAL OF BIOGEOGRAPHY,13.
MLA	Zhao, Yanjie,et al."On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication".JOURNAL OF BIOGEOGRAPHY (2023):13.