Diatom Response to Global Warming in Douhu Lake,Southeast China

作     者：LI Jingjing WANG Luo CAO Qi Patrick RIOUAL LEI Guoliang CAI Binggui ZHANG Jiaoyang ZOU Yafei YAN Yao WAN Xiaoqiao XIAO Jule LI Jingjing;WANG Luo;CAO Qi;Patrick RIOUAL;LEI Guoliang;CAI Binggui;ZHANG Jiaoyang;ZOU Yafei;YAN Yao;WAN Xiaoqiao;XIAO Jule

作者机构：School of Earth Sciences and ResourcesChina University of Geosciences(Beijing)Beijing 100083China Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China School of Geographical SciencesFujian Normal UniversityFuzhou 350007China CAS Center for Excellence in Life and PaleoenvironmentBeijing 100044China Key Laboratory of Humid Subtropical Ecogeographical Processes of the Ministry of EducationFujian Normal UniversityFuzhou 350007China Institute of GeographyFujian Normal UniversityFuzhou 350007China College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2021年第95卷第2期

页      面：638-647页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0713[理学-生态学] 

基　　金：funded by a granted from National Key R&D Program of China(Grant No.2017YFA0603400) the National Basic Research Program of China(Grant No.2015CB953801) the National Natural Science Foundation of China(Grant No.41772379)。 

主　　题：diatom global warming Douhu Lake China 

摘      要：A large number of lacustrine sedimentary records indicate that global warming is the main factor leading to significant changes in diatom communities in lakes of the northern hemisphere.However,due to the intensification of human activities since 1850,some scholars have emphasized that the increasing lake trophic level may be the main reason for the changes in diatom communities.The debate is ongoing.In order to avoid falling into the complex relationship between diatom changes and the seasonal cycle that characterizes lakes in mid and high latitudes,we chose a lake located at a low latitude,where the relationship between diatoms and temperature is not indirect but direct.The diatom record spans the past ca.100 years and reveals that the abundance of Aulacoseira granulata increased from 1900 until 1985,replacing the previously dominant Aulacoseira ambigua.These changes are in agreement with the increasing trend in global temperature.Since 1985,the percentages of the small-celled Discostella stelligera and the benthic diatom Navicula heimansioides have increased,while Aulacoseira granulata has decreased.This latest shift is caused by further global warming.We conclude that warming is the main factor leading to changing diatom communities in Douhu Lake.