中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 南京地质古生物研究所
  3. 中国科学院南京地质古生物研究所
On the biodiversity of diatom communities in lakes of East China: Geochemical effects dominated after eutrophication

文献类型：期刊论文

作者Zhao, Yanjie3; Wang, Rong1,3; Xu, Min2; Zhang, Enlou3
刊名JOURNAL OF BIOGEOGRAPHY
出版日期2023-09-27
页码13
ISSN号0305-0270
关键词community dynamics change freshwater ecosystems homogenization Jaccard dissimilarity spatio-temporal
DOI10.1111/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.
WOS关键词ECOSYSTEM SERVICES ; PALEOLIMNOLOGICAL DATA ; TOTAL PHOSPHORUS ; SHALLOW LAKES ; FRESH-WATER ; DIVERSITY ; ASSEMBLAGES ; CONSERVATION ; DISSOLUTION ; SEDIMENTS
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
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.

入库方式： OAI收割

来源：南京地质古生物研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。