Global mapping reveals increase in lacustrine algal blooms over the past decade
Hou X.; Feng L.; Dai Y.; Hu C.; Gibson L.; Tang J.; Lee Z.; Wang Y.; Cai X.; Liu J.; Zheng Y.; Zheng C.
Date Issued2022
Other AbstractAlgal blooms constitute an emerging threat to global inland water quality, yet their spatial and temporal distribution at the global scale remains largely unknown. Here we establish a global bloom database, using 2.91 million Landsat satellite images from 1982 to 2019 to characterize algal blooms in 248,243 freshwater lakes, representing 57.1% of the global lake area. We show that 21,878 lakes (8.8%) spread across six continents have experienced algal blooms. The median bloom occurrence of affected lakes was 4.6%, but this frequency is increasing; we found increased bloom risks in the 2010s, globally (except for Oceania). The most pronounced increases were found in Asia and Africa, mostly in developing countries that remain reliant on agricultural fertilizer. As algal blooms continue to expand in scale and magnitude, this baseline census will be vital towards future risk assessments and mitigation efforts. © 2022, The Author(s), under exclusive licence to Springer Nature Limited.
scopus keywordsalgal bloom; global change; lacustrine environment; Landsat; mapping method; satellite imagery; temporal distribution; water quality; Africa; Asia
journalNature Geoscience
Document Type期刊论文
AffiliationSchool of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China; College of Marine Science, University of South Florida, St. Petersburg, FL, United States; Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden; Terrestrial Ecology Section, Department of Biology, University of Copenhagen, Copenhagen, Denmark; School for the Environment, University of Massachusetts Boston, Boston, MA, United States; Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China
Recommended Citation
GB/T 7714
Hou X.,Feng L.,Dai Y.,et al. Global mapping reveals increase in lacustrine algal blooms over the past decade[J],2022,15(2).
APA Hou X..,Feng L..,Dai Y..,Hu C..,Gibson L..,...&Zheng C..(2022).Global mapping reveals increase in lacustrine algal blooms over the past decade.Nature Geoscience,15(2).
MLA Hou X.,et al."Global mapping reveals increase in lacustrine algal blooms over the past decade".Nature Geoscience 15.2(2022).
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