reference : Ecological lessons from Free-Air CO2 Enrichment (FACE) Experiments

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Bibliographic fields
reftype Journal Article
Abstract Free-air CO2 enrichment (FACE) experiments have provided novel insights into the ecological mechanisms controlling the cycling and storage of carbon in terrestrial ecosystems and contribute to our ability to project how ecosystems respond to increasing CO2 in the Earth's atmosphere. Important lessons emerge by evaluating a set of hypotheses that initially guided the design and longevity of forested FACE experiments. Net primary productivity is increased by elevated CO2, but the response can diminish over time. Carbon accumulation is driven by the distribution of carbon among plant and soil components with differing turnover rates and by interactions between the carbon and nitrogen cycles. Plant community structure may change, but elevated CO2 has only minor effects on microbial community structure. FACE results provide a strong foundation for next-generation experiments in unexplored ecosystems and inform coupled climate-biogeochemical models of the ecological mechanisms controlling ecosystem response to the rising atmospheric CO2 concentration.
Author Norby, Richard J. ; Donald R. Zak
DOI 10.1146/annurev-ecolsys-102209-144647
Issue 1
Journal Annual Review of Ecology, Evolution, and Systematics
Keywords elevated CO2,forests,net primary productivity,carbon cycle,nitrogen cycle,soil microbial activity,soil organic matter
Pages 181-203
Title Ecological lessons from Free-Air CO2 Enrichment (FACE) Experiments
Volume 42
Year 2011
Bibliographic identifiers
_record_number 23426
_uuid b88c574e-62bc-459d-b08e-5a68fcd4c8d0