Related Experiment Video
Updated: Aug 8, 2025

Author Spotlight: Unraveling Plant Responses to Abiotic Stresses Using the PlantScreen Robotic Platform
Published on: June 7, 2024
Extreme drought disrupts plant phenology: Insights from 35 years of cloud forest data in Venezuela
Saúl Flores1, Matthew L Forister2, Hendrik Sulbaran1
1Centro de Ecología, Laboratorio de Ecología de Suelos Ambiente y Agricultura del Instituto Venezolano de Investigaciones Científicas, Caracas, Venezuela.
Abstract:
The potential effects of climate change on plant reproductive phenology include asynchronies with pollinators and reductions in plant fitness, leading to extinction and loss of ecosystem function. In particular, plant phenology is sensitive to extreme weather events, which are occurring with increasing severity and frequency in recent decades and are linked to anthropogenic climate change and shifts in atmospheric circulation. For 15 plant species in a Venezuelan cloud forest, we documented dramatic changes in monthly flower and fruit community composition over a 35-year time series, from 1983 to 2017, and these changes were linked directly to higher temperatures, lower precipitation, and decreased soil water availability. The patterns documented here do not mirror trends in temperate zones but corroborate results from the Asian tropics. More intense droughts are predicted to occur in the region, which will cause dramatic changes in flower and fruit availability.
Related Concept Videos
Responses to Drought and Flooding
Adaptations that Reduce Water Loss
Responses to Heat and Cold Stress
Threats to Biodiversity
Regulation of Transpiration by Stomata
Biological Clocks and Seasonal Responses

