Data from: Photoperiod sensitive plants have lower levels of flowering time advancement

Over the last few decades, many plant species have shown significant
advances in the date on which they germinate, flush their leaves or begin
flowering. However, some species are not changing their phenology and risk
falling behind as their competitors and pollinators adapt to the warming
climate. In this study, we tested the idea that photoperiod-sensitive
species are less likely to advance their flowering time than species
without photoperiod sensitivity and look for ways to predict which species
are sensitive to photoperiod using phenology and two life history
characteristics. We found that on average, plants that respond to long
daylengths (over 12 hours) are not changing their flowering time as
rapidly as plants that respond to short daylengths (under 12 hours) or
plants with no photoperiod requirements. It is not possible to predict
which species are sensitive to photoperiod with phylogeny, but herbs and
annual species are more likely to be photoperiod-sensitive than are woody
or perennial species. In the past, photoperiod sensitivity may have helped
plants ignore unseasonal weather extremes. Our findings suggests plants
with long-day photoperiod requirements are responding differently to
climate change than other plants.