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Explore Your Curious Nature

Avalanches Affecting the Area

Posted by Walking Mountains Science Center on Feb 17, 2020 8:00:00 AM
Walking Mountains Science Center

Avalanche

Currently we are in our most active time of the year for avalanches to occur. Our snowpack is well established and still building as we go into the rest of February. The danger will continue to remain until our snowpack decreases and we see less accumulation. Now, avalanches may be a danger to us and seem to be a nuisance, but what impacts do they have on the environment around us and are they helpful to the local flora and fauna?

Avalanches are caused when a large area, or slab, of snow comes tumbling down the mountain with great speeds and tremendous force. These forces can be a real danger people traveling in the area and anything in the avalanche’s way. Avalanches will break trees, move boulders, and bury anything in its path. This can obviously hurt the trees and could completely knock them over. Very large avalanches can remove entire areas of trees and these bare areas are very apparent in the summer. High alpine animals, such as mountain goats, could trigger avalanches and are susceptible to being caught in them.

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Avalanches are a naturally occurring event in the wild and can happen without human interference. Avalanches can also be a good thing for the local ecosystem. All trees have a lot of nutrients stored in them from there many years of growth. When an avalanche comes through and damages these trees, they eventually die when they are uprooted. These dead trees will release a lot of nutrients back into the ground to help other plants to grow and will, in turn, re-stabilize the soil while preventing other events, such as landslides, from happening. These dead trees can also provide homes for insects and many fungi species to grow. When large areas of trees are removed it also creates a new habitat. There are now areas that no longer have trees but meadows where larger animals can move around easier. This allows easier hunting areas for larger predators. This new habitat provides an array of new types of vegetation for gazing animals, like deer and elk, to eat from.

A lot of larger animals use areas that are common avalanche zones to eat or hunt from in the summer. These are areas where trees can never grow from the constant barrage of avalanches. The saplings that grow in the summer will be uprooted every winter from avalanches constantly falling. Another great benefit to natural avalanches is that they can re-stabilize the snowpack. When an avalanche slides it leaves a lot less snow and the more stable snowpack beneath. These smaller avalanches that occur can prevent the bigger avalanches. This can help outdoor adventurers so we don’t have massive avalanches falling into our road ways or in back country areas. Ski resorts use avalanche control methods in their steeper areas that are more prone to avalanche slides. At the end of the day, avalanches are a neutral event. They can bring both bad and good effects with them and can happen naturally.

Byline: Austin Averett is a naturalist at Walking Mountains Science Center working on his Master’s Degree in Interdisciplinary Science at Florida Institute of Technology.

Topics: Curious Nature

Walking Mountains Science Center

Written by Walking Mountains Science Center

Our mission is to awaken a sense of wonder and inspire environmental stewardship and sustainability through natural science education.