Acceleration of cyanobacterial dominance in north temperate-subarctic lakes during the Anthropocene

Ecology Letters
Zofia E TaranuRolf D Vinebrooke

Abstract

Increases in atmospheric temperature and nutrients from land are thought to be promoting the expansion of harmful cyanobacteria in lakes worldwide, yet to date there has been no quantitative synthesis of long-term trends. To test whether cyanobacteria have increased in abundance over the past ~ 200 years and evaluate the relative influence of potential causal mechanisms, we synthesised 108 highly resolved sedimentary time series and 18 decadal-scale monitoring records from north temperate-subarctic lakes. We demonstrate that: (1) cyanobacteria have increased significantly since c. 1800 ce, (2) they have increased disproportionately relative to other phytoplankton, and (3) cyanobacteria increased more rapidly post c. 1945 ce. Variation among lakes in the rates of increase was explained best by nutrient concentration (phosphorus and nitrogen), and temperature was of secondary importance. Although cyanobacterial biomass has declined in some managed lakes with reduced nutrient influx, the larger spatio-temporal scale of sedimentary records show continued increases in cyanobacteria throughout the north temperate-subarctic regions.

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Citations

Dec 17, 2015·Global Change Biology·Mark A StevensonSergi Pla-Rabés
Jun 28, 2016·Water Research·Pirooz PazoukiSarah Dorner
Oct 19, 2016·Ecological Applications : a Publication of the Ecological Society of America·Diane M OrihelRolf D Vinebrooke
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Feb 9, 2018·The ISME Journal·Matilda HaraldssonNathalie Niquil
Jul 11, 2019·Proceedings. Biological Sciences·John P Smol
Dec 14, 2019·PloS One·Matthew N WatersBenjamin C Webster
Dec 5, 2019·Scientific Reports·Sachidananda MishraAndrew Meredith
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Aug 20, 2019·The Science of the Total Environment·Shiqi FangDaniel R Obenour
Feb 21, 2021·The Science of the Total Environment·Sachidananda MishraAndrew Meredith

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