How a plant's timing shifts can soften drought's blow
Felton AJ
Phenology
If you've noticed your lawn or prairie patch green up early and then stall during a dry spell, that shift in timing, not just the lack of rain, may be what determines how much growth you actually lose.
When drought hits, plants don't just grow less, they often change when they grow, speeding up or delaying key stages like leaf-out or flowering. This research shows that those timing shifts can act like a buffer, helping explain why some grasslands lose a lot of productivity in a drought while others barely notice. Essentially, two ecosystems facing the same drought can respond very differently depending on how their plants rearrange their growing calendar.
Key Findings
Vegetation phenology (timing of growth stages) is frequently altered during drought, beyond simple reductions in growth
These phenological shifts can act as compensatory dynamics that explain variation in ecosystem sensitivity to drought
Tests across a large grassland ecoregion showed phenological response during extreme drought explains cross-ecosystem differences in drought sensitivity of annual net primary productivity
chevron_right Technical Summary
Plants shift their seasonal growth timing during droughts, and this timing shift, not just lack of water, explains why some ecosystems hold up better than others when drought hits. A grassland study found that these phenology changes can buffer or worsen productivity loss.
Abstract Preview
Original paper
A role for vegetation phenology in shaping patterns of ecosystem sensitivity to drought.
Phenology, as the study of the timing and rhythms of vegetation activity, has traditionally emphasized trends in phenological responses to gradual climate change. Consequently, we lack understandin...
open_in_new Read full abstractAbstract copyright held by the original publisher.
Was this useful?
Want to tell us more? (optional)
Thanks for the note!
Something went wrong — please try again.
Too many submissions. Try again in an hour.
Nanoplastics interfere with plant-mycorrhizal communication and limit plant growth.
Microplastics breaking down in your garden soil are quietly strangling the beneficial fungi that help your vegetables absorb phosphorus and other nutrients, ...
Climate adaptation in plants refers to the physiological and evolutionary mechanisms through which plants adjust to changing environmental conditions, including temperature shifts, altered precipitation patterns, and seasonal variations. Understanding these processes is essential for plant science
arrow_forward Explore topic