Title: Warmer climates boost cyanobacterial dominance in shallow lakes
Authors: Kosten, Sarian ×
Huszar, Vera L. M
Becares, Eloy
Costa, Luciana S
van Donk, Ellen
Hansson, Lars-Anders
Jeppesenk, Erik
Kruk, Carla
Lacerot, Gissell
Mazzeo, Nestor
De Meester, Luc
Moss, Brian
Lurling, Miquel
Noges, Tiina
Romo, Susana
Scheffer, Marten #
Issue Date: Jan-2012
Publisher: Blackwell Science
Series Title: Global Change Biology vol:18 issue:1 pages:118-126
Abstract: Dominance by cyanobacteria hampers human use of lakes and reservoirs worldwide. Previous studies indicate that excessive nutrient loading and warmer conditions promote dominance by cyanobacteria, but evidence from global scale field data has so far been scarce. Our analysis, based on a study of 143 lakes along a latitudinal transect ranging from subarctic Europe to southern South America, shows that although warmer climates do not result in higher overall phytoplankton biomass, the percentage of the total phytoplankton biovolume attributable to cyanobacteria increases steeply with temperature. Our results also reveal that the percent cyanobacteria is greater in lakes with high rates of light absorption. This points to a positive feedback because restriction of light availability is often a consequence of high phytoplankton biovolume, which in turn may be driven by nutrient loading. Our results indicate a synergistic effect of nutrients and climate. The implications are that in a future warmer climate, nutrient concentrations may have to be reduced substantially from present values in many lakes if cyanobacterial dominance is to be controlled.
ISSN: 1354-1013
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Ecology, Evolution and Biodiversity Conservation Section
× corresponding author
# (joint) last author

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