Who Cares About Beavers? We Do!

June 19th, 2017 | Posted by in Graduate M.Ed. Program

By Melissa Biggs, graduate student in the Institute’s 16th cohort

Everyone, meet Chompers!  In October 2016, during the fall natural history trip, my cohort helped the Methow Beaver Project volunteers to release the last 3 beavers of the season.  So much fun! We carried the beavers for several miles and released them at Beaver Creek. When we opened the cage, Chompers went right into the water.  It was fascinating to watch the three beavers explore their new environment.  This summer, the Methow Beaver Project workers will locate Chompers and the other two beavers to record their journey since the fall. This experience made me more curious about beavers and their role in the ecosystem. As I did more research, I realized how awesome beavers are!

Beavers are so wonderful that they are known as environmental engineers.  Beavers are known as a “keystone” species because of their large effects on landscapes.  It only takes a few beavers to transform a watershed entirely.  Beavers, with the exception of human beings, do more to shape their landscape than any other Chinese Teapots Wholesale Chinese Teapots Amber Spiral Bracelets! Beavers are also a “foundation” species because their presence and their creations, such as dams, allow other plants and animals to exist.  

Beavers’ creations are essential to its environment for many reasons.  First, beaver dams are natural filters, as they capture and store much of the sediment.  Streams that have been shaped by beavers have 10 times greater purification capability than streams without beavers.  Also, beaver dams store water, thus leading to the increased size of wetlands. Beaver dams can help mitigate the effects of drought and the loss of wetland and riparian habitats due to their abilities to store shallow groundwater and retention of surface water behind dams.   This is important because almost half of endangered and threatened species in North America rely upon wetlands.  Also, freshwater wetlands have been rated as the world’s most valuable land-based ecosystem.  Beaver ponds increase both the water we can see on the surface and also what is stored beneath the pond.  This helps increase the riparian area and vegetative productivity.  Not only do beaver dams store water, they also help slow down the water flow, which is why they are known as ‘nature’s speed bumps.’  They reduce stream velocity and power, which helps reduce erosion rates and the amount of sediment carried downstream.  This effect across the upper watershed could provide more time for flood planning, protection and evacuation of high risk, residential areas.  Beaver ponds also help stabilize the water temperature both in the shallow and deeper areas – they help cool down streams, creating better conditions for fish, especially trout.  Last, but not last, beavers’ modification on watersheds help increase organic material, such as cut wood and flooded plants, sediment with nutrients attached and more water surface area for photosynthesis to occur, which results in more aquatic biodiversity and food for fish.  Without beavers and the role they play in watersheds, most of the biodiversity that are associated with wetland habitats would disappear.


Chompers in his cage right before he’s released! Image courtesy of Melissa Biggs

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