Pinyon-juniper ecosystem in Grand Canyon National Park today. Learn more at https://www.nps.gov/grca/index.htm and https://phenocam.nau.edu/webcam/sites/grca1pj/ and https://www.nps.gov/articles/000/winter-ndvi-phenology-peaks.htm and #nps #nationalparks #interpretation #grandcanyon #publiclands #photography #landscapephotography #azwx Image credit PhenoCam Network #winter #color #climate #weather #phenocam #forest #research #pinyon #juniper #ecosystem #phenology