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    Author(s): 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
    Date: 2008
    Source: Global Change Biology. 14: 264-275.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: View PDF  (899.93 KB)


    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.

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    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.


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

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