Getting a feel for phenology


How can you tell that spring is on its way? Whether you’re holding out for the first sighting of a robin, crocuses blooming where there once was snow, or buds appearing on your neighborhood trees, you’re probably using phenology to determine when the seasons are starting to shift.

Phenology is the study of the timing of life cycle events in plants and animals, such as flowering, migration, and crop stages. These life stages, or phenophases, are directly impacted by the local weather and climate, responding to environmental changes such as variations in temperature and precipitation. With their responsiveness to changes in their natural surroundings, wildlife and their phenophases serve as important signal flags of environmental trends and variability, providing valuable information for health professionals, the agricultural sector, natural resource managers, emergency responders, and more.

The timing of important events such as growing seasons, allergy seasons, and fire seasons can vary widely from year to year, but by monitoring and analyzing trends in phenology across a wide geographic region, scientists can better predict when to expect the start and end of these events. For instance, health professionals can use data on plant phenophases to determine when to prepare their patients for allergy season, and farmers can use this information about plant and insect phenology to decide the best time to apply herbicides and pesticides to their crops. Emergency responders and natural resource managers both have an interest in using phenology to determine where and when fire season will begin over an area, using this information to help keep the public safe.

Using phenology to make these kinds of decisions requires many, many data points across a wide geographic range and a deep time scale. It can be difficult for scientists to gather this much data themselves, so this type of observation and data collection benefits from contributions from the public. You can get involved and try your hand at phenological observation—you can make important contributions from your own backyard!

Republished from NEEF.

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