Pressed museum plants reveal how flowering seasons have shifted over centuries
Ahlstrand NI, Primack RB, Austin MW, Panchen ZA, Römermann C
Phenology
The lilac blooming two weeks earlier than your grandparents noted, the autumn leaves holding on longer than old photos suggest: digitized herbarium collections are finally giving researchers the data to confirm what observant gardeners have suspected for generations.
Natural history museums hold millions of pressed plant specimens collected over centuries, each one a snapshot of exactly when that plant was flowering or setting seed. Scientists have now put photos and data from these specimens online, making it possible to track how plants are responding to warming temperatures across huge stretches of time and geography. The result is a growing body of research answering questions about seasonal timing shifts that no living scientist could have gathered alone.
Key Findings
Tens of millions of digitized herbarium specimens are now available online, enabling phenology research at spatial and temporal scales impossible with field observation alone.
Two major research themes have emerged: studying seasonal timing across broad geographies and time periods, and testing ecological and evolutionary theories that were previously untestable due to data scarcity.
Key limitations include sampling biases, questions of data reliability and transferability, and ethical concerns; future advances are expected from Arctic and tropical collections, AI-assisted digitization, and international collaboration.
chevron_right Technical Summary
Millions of pressed plant specimens held in museum collections worldwide are now digitized and freely searchable online, giving scientists an unprecedented window into how plants have shifted their blooming, leafing, and fruiting times over decades and across continents as climates change.
Abstract Preview
Original paper
The promise of digital herbarium specimens in large-scale phenology research.
The online mobilization of herbaria has made tens of millions of specimens digitally available, revolutionizing investigations of phenology and plant responses to climate change. We identify two ma...
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.
Urban Tree Canopy Reduces Heat-Related Mortality by 39% in European Cities
Trees in your local park or street aren't just pretty — they are literally keeping people alive during heatwaves, and planting even a modest number of the ri...
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