Verified Oregon oak sighting adds to Beaverton park's tree records
iNaturalist: epaciotta
Native Plants
Every confirmed Oregon oak sighting helps conservationists track where this slow-growing native tree still survives, since Oregon oak habitat has shrunk by over 95% in the Willamette Valley due to development and fire suppression.
Someone out walking in Cooper Mountain Nature Park near Beaverton spotted an Oregon oak tree and logged it on iNaturalist, a citizen science app. Other users and experts reviewed the photos and agreed on the identification, making it an official research-grade record. These small, everyday observations build a map of where native trees still thrive.
Key Findings
Observation confirmed as research-grade on iNaturalist, meaning identification was verified by community consensus
Location documented: Cooper Mountain Nature Park, Beaverton, Oregon
Species identified: Quercus garryana, the only native oak species in the Pacific Northwest
chevron_right Technical Summary
A birdwatcher or hiker confirmed a healthy Oregon oak growing in Cooper Mountain Nature Park near Beaverton, Oregon, and the sighting was verified by the iNaturalist community as research-grade data.
Abstract Preview
Original paper
Oregon oak (Quercus garryana) observed in Cooper Mountain Nature Park, Beaverton, OR, US
Research-grade observation of Oregon oak in Cooper Mountain Nature Park, Beaverton, OR, US.
open_in_new Read full abstractAbstract copyright held by the original publisher.
Species Mentioned
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Quercus garryana is an oak tree species found most commonly in the Pacific Northwest, with a range stretching from southern California to southwestern British Columbia. It is commonly known as the Garry oak, Oregon white oak or Oregon oak. It is named for Nicholas Garry, deputy governor of the Hu...