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Carbon dioxide stimulates lake primary production.

ABSTRACT: Gross primary production (GPP) is a fundamental ecosystem process that sequesters carbon dioxide (CO₂) and forms the resource base for higher trophic levels. Still, the relative contribution of different controls on GPP at the whole-ecosystem scale is far from resolved. Here we show, by manipulating CO₂ concentrations in large-scale experimental pond ecosystems, that CO₂ availability is a key driver of whole-ecosystem GPP. This result suggests we need to reformulate past conceptual models describing controls of lake ecosystem productivity and include our findings when developing models used to predict future lake ecosystem responses to environmental change.

SUBMITTER: Hamdan M

PROVIDER: S-EPMC6052161 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Carbon dioxide stimulates lake primary production.

Hamdan Mohammed M Byström Pär P Hotchkiss Erin R ER Al-Haidarey Mohammed J MJ Ask Jenny J Karlsson Jan J

Scientific reports 20180718 1

Gross primary production (GPP) is a fundamental ecosystem process that sequesters carbon dioxide (CO2) and forms the resource base for higher trophic levels. Still, the relative contribution of different controls on GPP at the whole-ecosystem scale is far from resolved. Here we show, by manipulating CO2 concentrations in large-scale experimental pond ecosystems, that CO2 availability is a key driver of whole-ecosystem GPP. This result suggests we need to reformul ...[more]

PMID: 30022034

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