Whitebark Pine - Sierra Club BC
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Whitebark Pine

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Whitebark Pine

Pinus albicaulis

APPEARANCE 

Whitebark pine is one of the shorter pine trees in the mountains, rarely growing above 15 metres. Its round bushy treetop is also uncharacteristic of pines and it grows from many different twisted stems. The needles are found in bunches of five which range from three to eight centimetres in length. 

RANGE & HABITAT 

This tree is only found at high elevations (1,500 metres and above). It is common in the Cascade, Rocky and Southern Interior Mountain ranges. It thrives in open, windy, dry habitat and can grow well in shade and drought conditions. 

RECIPROCAL RELATIONSHIPS 

White bark pine trees are incredibly important for alpine ecosystems. They are both a keystone species and a foundation species. This means that protecting the whitebark pine will protect the biodiversity across their unique alpine niches and this species stabalizes ecosystems.  

These trees hold soil together and help stop erosion on steep, rocky cliffs. This makes them highly valued as wildlife habitat for alpine species. Clark’s nutcracker depends on the seeds for food. Many other birds, squirrels, and chipmunks rely on the cones for food throughout the winter. These cones are egg-shaped and brownish-purple. They break open when ripe, and the seeds fall to the ground.  

Despite its’ importance, this tree is at-risk from a myriad of factors. Most notably: the blight of white pine blister rust. This is a fungal disease which is affecting most whitebark pine trees. In addition, due to climate change and rising global temperatures, mountain pine beetles have been attacking these trees.  

For the Okanagan, Secwepemc, Nlaka’pmx, St’at’imc, and Ktnuaxa, the seeds are used as a food source. They are crushed and mixed with Saskatoon berries for food or ground finely to be used as flour. The Secwepemc and the Flathead Salish also use the roots and bark to make canoes and containers that can hold water. 

Status

COSEWIC: Endangered 
CDC: Blue 

More Information

If you belong to a First Nation with a story or piece of information not represented here and you would like to share more about this species, please email us at education@sierraclub.bc.ca

Photo Credit

If you belong to a First Nation with a story or piece of information not represented here and you would like to share more about this species, please email us at education@sierraclub.bc.ca

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