USA NPN National Phenology Network

Taking the Pulse of Our Planet

1 2 3 4
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.

Get started with Nature's Notebook

You are here

USA National Phenology Network


Federal Crowdsourcing and Citizen Science Toolkit
USA-NPN highlighted in White House's Citizen Science and Crowdsourcing Forum

September 30, 2015

The US Government released today the Federal Crowdsourcing and Citizen Science Toolkit to assist Federal agencies to design, carry out and manage these projects. This Toolkit, along with John Holdren's Memo to Executive Departments and Agencies, highlight USA-NPN's Nature's Notebook plant and animal phenology observation program as an example of the great benefit of citizen science. 

All News »

Observers Needed

Photo: LoriAnne BarnettCelebrate Phenology Days this October! 

We encourage you to celebrate all things phenology during the month of October! We will be hosting a variety of fun phenology events around the Tucson area from October 16-24. Create your own phenology festivities, and share your pictures on Instagram or Twitter with #phenoweek2015

Find out more about Nature's Notebook »