Yosemite National Park

This finding aid describes the National Park Service (NPS) Stereograph Collection, part of the NPS History Collection.

This finding aid describes the Rodney S. Ellsworth Papers, part of the NPS History Collection.

As Yosemite National Park restores Ackerson Meadow, researchers are studying the small mammals that support the park's state-endangered great gray owls. The inventory established a baseline for future monitoring and identified a promising new method for tracking vole populations.

Researchers from UC Santa Barbara and UC Davis partnered with the National Park Service Inventory and Monitoring Program to assess the health of sugar pines in Yosemite National Park. The trees face serious threats from white pine blister rust, bark beetles, and drought, prompting a need for…

Clark’s nutcrackers favor the seeds of whitebark pines, which they cache in great numbers. Whitebark pines are largely dependent on nutcrackers for seed dispersal; many cached seeds are not retrieved and go on to germinate. The tree is in decline due to native bark beetles, a non-native fungus…