Reconstructing past xylogenesis of black spruce

Reconstructing past xylogenesis of black spruce

Reconstructing past xylo­gen­esis of black spruce

Hemispheric-scale recon­struc­tions of sur­face tem­per­at­ure fluc­tu­ations over the last mil­len­nium have iden­ti­fied the 20th cen­tury as uniquely warm. Boulouf Lugo et al. mon­itor tim­ings of wood form­a­tion in black spruce, Picea mari­ana, on a weekly times­cale over 9 years in the boreal forest of Quebec, Canada, and use the res­ults in con­junc­tion with tem­per­at­ure records to model tim­ings between 1950 and 2010. They find that warmer tem­per­at­ures are asso­ci­ated with a length­en­ing in the dur­a­tion of xylo­gen­esis, with the greatest changes being observed in spring and at higher lat­it­udes. In the long run, such changes could modify the short time win­dow for growth of the boreal spe­cies and dra­mat­ic­ally affect the growth dynam­ics and pro­ductiv­ity of trees in these temperature-limited ecosystems.

Annals of Botany Office.

The Annals of Botany Office is based at the University of Leicester.

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