IGSNRR OpenIR
Shifting of phytoplankton assemblages in a regulated Chinese river basin after streamflow and water quality changes
Zhou, Yujian1,2; Zhang, Yongyong1; Liang, Tao2,3; Wang, Lingqing3
2019-03-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume654Pages:948-959
Corresponding AuthorZhang, Yongyong(zhangyy003@igsnrr.ac.cn)
AbstractPhytoplankton is critical to river ecosystems. These organisms are sensitive to streamflow and water quality changes and, therefore, used to determine stability of river ecosystems, especially in regulated rivers. However, exactly how such disturbances alter spatial distribution of phytoplankton remains unclear, particularly during different seasons. A thorough understanding of these mechanisms is required to better analyze impact of environmental factors on regulated rivers. Given this, phytoplankton communities, streamflow, and water quality factors were assessed in areas sampled four times from 2015 to 2016 in upper and middle Huai River Basin. Biodiversity indices, as well as duster and rank analyses, were used to (1) determine phytoplankton composition and distribution and (2) clarify impacts of key streamflow and water quality factors on such communities. It was found phytoplankton composition deteriorated over time, with phyla number decreasing from six to three. Moreover, proportion of Bucilluriophyta increased from 51.83% to 68.13%. Phytoplankton in three regions, upstream region (Shannon-Wiener index 1.39-2.95), midstream region (0.70-4.55), and downstream region (0.22 to 2.97), were spatially clustered. The most impact factors impacting variation in composition and distribution were water quality factors and then hydrological factors. Of these, the most important factors in wet seasons were total nitrogen and maximum runoff, while ammonia nitrogen and low flow discharge were the most important factors during dry seasons. Streamflow and water quality contributed the most in midstream region, which was significantly affected by numbers of high and low flow. Contributions of these factors to downstream region were the strongest during dry seasons, which were significantly affected by numbers of low flow. Collectively, these results reveal significant impact of streamflow and water quality factors on phytoplankton deterioration in upper and middle Huai River Basin. Critically, this study provides scientific and technological support for increased biomonitoring and ecohydrological studies in regulated river basins. (C) 2018 Elsevier B.V. All rights reserved.
KeywordPhytoplankton community Flow regimes Physiochemical change Regulated river
DOI10.1016/j.scitotenv.2018.10.348
WOS KeywordNONPOINT-SOURCE POLLUTION ; MACROINVERTEBRATE COMMUNITIES ; ENVIRONMENTAL-FACTORS ; FUNCTIONAL-GROUPS ; PHOSPHORUS ; DYNAMICS ; IMPACTS ; TEMPERATURE ; NUTRIENT ; CLIMATE
Indexed BySCI
Language英语
Funding ProjectProgram for Bingwei Excellent Talents in IGSNRR CAS[2015RC201] ; Natural Science Foundation of China[41671024] ; Natural Science Foundation of China[41271005] ; China Youth Innovation Promotion Association CAS[2014041]
Funding OrganizationProgram for Bingwei Excellent Talents in IGSNRR CAS ; Natural Science Foundation of China ; China Youth Innovation Promotion Association CAS
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000458630100086
PublisherELSEVIER SCIENCE BV
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/49364
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Yongyong
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface & Simulat, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Yujian,Zhang, Yongyong,Liang, Tao,et al. Shifting of phytoplankton assemblages in a regulated Chinese river basin after streamflow and water quality changes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,654:948-959.
APA Zhou, Yujian,Zhang, Yongyong,Liang, Tao,&Wang, Lingqing.(2019).Shifting of phytoplankton assemblages in a regulated Chinese river basin after streamflow and water quality changes.SCIENCE OF THE TOTAL ENVIRONMENT,654,948-959.
MLA Zhou, Yujian,et al."Shifting of phytoplankton assemblages in a regulated Chinese river basin after streamflow and water quality changes".SCIENCE OF THE TOTAL ENVIRONMENT 654(2019):948-959.
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