Light limitation of nutrient-poor lake ecosystems

Jan Karlsson (), Pär Byström, Jenny Ask, Per Ask, Lennart Persson and Mats Jansson
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Jan Karlsson: Climate Impacts Research Centre (CIRC), Umeå University, Box 62, SE-981 07 Abisko, Sweden
Pär Byström: Umeå University
Jenny Ask: Umeå University
Per Ask: Umeå University
Lennart Persson: Umeå University
Mats Jansson: Umeå University

Nature, 2009, vol. 460, issue 7254, 506-509

Abstract: Lake productivity limited by light, not nutrients The common assumption that lake ecosystem productivity is generally limited by nutrient availability is challenged by new findings from a study of twelve natural lakes in northern Sweden. In these lakes light supply is shown to be the limiting factor on biomass accumulation rather than nutrient supply. Many natural lakes, like these, are relatively small and nutrient-poor, so it seems likely that most lakes are limited by light and that nutrients control productivity mainly in lakes with atypically high input of nutrients.

Date: 2009
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DOI: 10.1038/nature08179

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