Future atmospheric CO2 leads to delayed autumnal senescence

Gail Taylor; Matthew J. Tallis; Christian P. Giardina; Kevin E. Percy; Franco Miglietta; Pooja S. Gupta; Beniamin Gioli; Carlo Calfapietra; Birgit Gielen; Mark E. Kubiske; Giuseppe E. Scarascia-Mugnozza; Katre Kets; Stephen P. Long; David F. Karnosky

Treesearch

Future atmospheric CO₂ leads to delayed autumnal senescence

Informally Refereed

Authors:

Gail Taylor, Matthew J. Tallis, Christian P. Giardina, Kevin E. Percy, Franco Miglietta, Pooja S. Gupta, Beniamin Gioli, Carlo Calfapietra, Birgit Gielen, Mark E. Kubiske, Giuseppe E. Scarascia-Mugnozza, Katre Kets, Stephen P. Long, David F. Karnosky

Year:

2008

Type:

Scientific Journal

Station:

Northern Research Station

Source:

Global Change Biology. 14: 264-275.

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Abstract

Growing seasons are getting longer, a phenomenon partially explained by increasing global temperatures. Recent reports suggest that a strong correlation exists between warming and advances in spring phenology but that a weaker correlation is evident between warming and autumnal events implying that other factors may be influencing the timing of autumnal phenology. Using freely rooted, field-grown Populus in two Free Air CO₂ Enrichment Experiments (AspenFACE and PopFACE), we present evidence from two continents and over 2 years that increasing atmospheric CO₂ acts directly to delay autumnal leaf coloration and leaf fall.

Keywords

autumnal phenology, elevated CO2, FACE, LAI, Populus, senescence

Citation

Taylor, Gail; Tallis, Matthew J.; Giardina, Christian P.; Percy, Kevin E.; Miglietta, Franco; Gupta, Pooja S.; Gioli, Beniamin; Calfapietra, Carlo; Gielen, Birgit; Kubiske, Mark E.; Scarascia-Mugnozza, Giuseppe E.; Kets, Katre; Long, Stephen P.; Karnosky, David F. 2008. Future atmospheric CO₂ leads to delayed autumnal senescence. Global Change Biology. 14: 264-275.