Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction
Articolo
Data di Pubblicazione:
2017
Abstract:
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Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction
Davide Ascoli, Giorgio Vacchiano, Marco Turco, Marco Conedera, Igor Drobyshev, Janet Maringer, Renzo Motta & Andrew Hacket-Pain
Nature Communicationsvolume 8, Article number: 2205 (2017)
doi:10.1038/s41467-017-02348-9
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Atmospheric dynamicsEvolutionary ecologyForest ecologyPhenology
Received:
11 May 2017
Accepted:
22 November 2017
Published online:
20 December 2017
Abstract
Climate teleconnections drive highly variable and synchronous seed production (masting) over large scales. Disentangling the effect of high-frequency (inter-annual variation) from low-frequency (decadal trends) components of climate oscillations will improve our understanding of masting as an ecosystem process. Using century-long observations on masting (the MASTREE database) and data on the Northern Atlantic Oscillation (NAO), we show that in the last 60 years both high-frequency summer and spring NAO, and low-frequency winter NAO components are highly correlated to continent-wide masting in European beech and Norway spruce. Relationships are weaker (non-stationary) in the early twentieth century. This finding improves our understanding on how climate variation affects large-scale synchronization of tree masting. Moreover, it supports the connection between proximate and ultimate causes of masting: indeed, large-scale features of atmospheric circulation coherently drive cues and resources for masting, as well as its evolutionary drivers, such as pollination efficiency, abundance of seed dispersers, and natural disturbance regimes.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Chemistry (all); Biochemistry, Genetics and Molecular Biology (all); Physics and Astronomy (all)
Elenco autori:
Ascoli, Davide*; Vacchiano, Giorgio; Turco, Marco; Conedera, Marco; Drobyshev, Igor; Maringer, Janet; Motta, Renzo; Hacket-Pain, Andrew
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