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Carbon dioxide stimulates lake primary production
Mohammed Hamdan1, Pär Byström2, Erin R Hotchkiss3
1Department of Ecology and Environmental Science, Umeå University, 90187, Umeå, Sweden. mohammed.hamdan@umu.se.
Scientific Reports
|July 20, 2018
Summary
Carbon dioxide (CO2) availability is a primary driver of whole-ecosystem productivity in aquatic environments. This finding challenges existing models and highlights the need for new ones to predict ecosystem responses to environmental change.
Area of Science:
- Ecology
- Limnology
- Biogeochemistry
Background:
- Gross primary production (GPP) is crucial for carbon sequestration and aquatic food webs.
- The primary drivers of GPP at the ecosystem scale remain incompletely understood.
Purpose of the Study:
- To investigate the role of carbon dioxide (CO2) availability as a control on whole-ecosystem GPP.
- To challenge and refine existing conceptual models of lake ecosystem productivity.
Main Methods:
- Utilized large-scale experimental pond ecosystems.
- Manipulated carbon dioxide (CO2) concentrations to assess their impact on GPP.
Main Results:
- Demonstrated that CO2 availability is a key driver of whole-ecosystem GPP.
- Provided empirical evidence for the significant influence of CO2 on aquatic ecosystem productivity.
Conclusions:
- Current conceptual models of lake ecosystem productivity require reformulation.
- Findings are essential for developing predictive models of lake responses to environmental change, particularly concerning CO2 levels.
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