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Whitebark pine distribution and regeneration


Whitebark pine (Pinus albicaulis) is an ecologically important species in high-altitude areas of the West due to the habitat and food source it provides for Clark’s nutcrackers, red squirrels, grizzly bears, and other animals. Whitebark pine stands have recently experienced high mortality due to wildfire, white pine blister rust, and a mountain pine beetle outbreak, leading to questions about the species’ long-term viability. This project seeks to quantify the current distribution and regeneration status of whitebark pine throughout its US range.

If resource managers want to maintain whitebark pine and the numerous species that rely on it, they need quantitative information about how to encourage regeneration and recruitment. The Forest Inventory & Analysis (FIA) Program collects information about whitebark pine regeneration, growth, and mortality across all forest types. This project uses FIA data to assess seedling densities, factors related to seedling presence, size-class distributions, growth, and mortality of whitebark pine trees in mixed-species stands throughout the US portion of its range.

To learn more about this topic, see the project page for Whitebark pine distribution and regeneration in mixed-species stands

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