European beech trees don't respond to temperature the same way all season long — warming in spring pushes their leaves to drop earlier in fall, while warming in late summer delays that drop. A new study shows the 'flip point' between these two effects isn't fixed to the summer solstice but shifts depending on how fast the tree developed earlier in the year.
1
Pre-solstice warming advances autumn leaf senescence (earlier leaf drop), while post-solstice warming delays it — confirming a seasonal 'switch point' in beech phenological response
2
The switch point is not fixed at the summer solstice (June 21) but shifts based on early-season developmental rate, occurring at a 'compensatory point' between spring development and late-summer temperature effects
3
Climate manipulation experiments on potted European beech demonstrated that developmental constraints — not temperature alone — govern when trees transition from growth to dormancy preparation
mail
Weekly plant science — one email, Saturdays.
Check your inbox to confirm — link expires in 24 hours.
Something went wrong — please try again.
Too many signup attempts from your network. Try again in an hour, or email hello@plant.news.
