Day length unlikely to constrain climate-driven shifts in leaf-out times of northern woody plants

By Constantin M. Zohner, Blas M. Benito, Jens‐Christian Svenning, S. Renner. 2016

211 citations recorded by the source corpus.

Photoperiod is only an important leaf-out regulator for woody plants in areas with short winters and in lineages that derive from lower latitudes. Consequently, photoperiod constraint on range expansion should be limited to these areas and species. The relative roles of temperature and day length in driving spring leaf unfolding are known for few species, limiting our ability to predict phenology under climate warming1,2. Using experimental data, we assess the importance of photoperiod as a leaf-out regulator in 173 woody species from throughout the Northern Hemisphere, and we also infer the influence of winter duration, temperature seasonality, and inter-annual temperature variability. We combine results from climate- and light-controlled chambers with species’ native climate niches inferred from georeferenced occurrences and range maps. Of the 173 species, only 35% relied on spring photoperiod as a leaf-out signal. Contrary to previous suggestions, these species come from lower latitudes, whereas species from high latitudes with long winters leafed out independent of photoperiod. The strong effect of species’ geographic–climatic history on phenological strategies complicates the prediction of community-wide phenological change.

Subfields: Ecology, Global and Planetary Change, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/88e6142c60870ca814b716cc68f66973a2f2453f

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In Ecology

In Global and Planetary Change

In Nature and Landscape Conservation

Citations in the corpus

Plant phenology and global climate change: Current progresses and challenges (2019, background): “It is also noteworthy that the photoperiod sensitivity of spring phenological events might vary substantially among different species and latitudes (Zohner et al., 2016).”
Climate Change and Phenological Mismatch in Trophic Interactions Among Plants, Insects, and Vertebrates (2018, background): “Leaf out in L. decidua is mainly regulated by spring temperatures and not by day-length increase or winter chilling (Zohner et al. 2016, 2017; Zohner & Renner 2017).”