USA NPN National Phenology Network

Taking the Pulse of Our Planet

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The USA National Phenology Network

The USA National Phenology Network

We bring together citizen scientists, government agencies, non-profit groups, educators and students of all ages to monitor the impacts of climate change on plants and animals in the United States. Learn more about the USA-NPN

What is Phenology?

What is Phenology?

Phenology refers to key seasonal changes in plants and animals from year to year – such as flowering, emergence of insects and migration of birds – especially their timing and relationship with weather and climate.

Learn more about phenology

Phenology and Climate Change

Phenology and Climate Change

The ways in which the world is responding to climate change are not well understood. Phenology is a great indicator of current and future climate impacts on people, plants, animals and our natural areas.

Nature's Notebook

Nature's Notebook

Join amateur and professional naturalists in regularly observing plants and animals to generate long-term data sets used for scientific discovery and decision-making.

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USA National Phenology Network


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USA-NPN Programmer Hire

February 6, 2015

The USA-NPN is hiring a programmer with a background in data analysis, to advance the Network's data and research infrastructure. Candidate's primary responsibilities will be focused on maintaining existing web infrastructure and supporting the development of data products from USA-NPN's Nature's Notebook plant and animal phenology program and as well as analyzing and integrating third-party data sets. Apply at University of Arizona's CareerTrack, under job number 57315.

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Observers Needed

Nature's Notebook phenology calendarCustomizable phenology calendar now on Observation Deck!

Nature's Notebook observers will now see customizable phenology calendars right on their Observation Deck. The data reported will be displayed automatically in graphical form, and can be shared and printed. Observers are able to compare up to three phenophases in two different years.

Find out more about Nature's Notebook »