Slide 1
Growing close to the ground
Alpine plants live beyond the local tree line under cold, windy conditions. Many remain low instead of building tall exposed stems.
More to Read
Elevation alone does not set identical conditions everywhere. Slope, shelter and latitude influence the tree line, so the alpine zone begins at different heights in different regions.
Slide 2
A cushion makes shelter
Some alpine plants form dense cushions or mats. Staying near the ground reduces exposure to strong winds passing over the surface.
More to Read
Closely packed shoots also alter the immediate microclimate. The plant's form helps create the conditions it occupies, rather than merely enduring the same air measured farther from the ground.
Slide 3
The growing season is short
Alpine plants may have only a brief summer for growth and reproduction. Many are perennial and survive through several years.
More to Read
Repeated seasons spread the opportunity to reproduce across time. A small plant can be old, so its height does not provide a reliable guide to how recently it established.
Slide 4
Snow can shelter and delay
Snow cover can protect plants from some winter exposure. It also affects when the ground becomes available for summer growth.
More to Read
A late-melting patch offers a different timetable from a windswept ridge. Small distances can contain different plant communities because the snow history and moisture supply differ.
Slide 5
Recovery can be slow
Damage to alpine vegetation may take a long time to heal. Short seasons limit how much replacement growth occurs each year.
More to Read
The exposed soil can then experience erosion and further disturbance. Protecting intact plant cover preserves both the organisms and the small sheltered conditions they help maintain around their roots and shoots.
Sources
- Alpine Tundra Ecosystem
National Park Service
- Plants of Yukon-Charley Rivers
National Park Service