Featured Research

from universities, journals, and other organizations

Busy Beavers Can Help Ease Drought

Date:
February 26, 2008
Source:
University of Alberta
Summary:
They may be considered pests, but beavers can help mitigate the effects of drought. Climate models predict the incidence of drought in parts of North America will increase in frequency and length over the next 100 years, and beaver will likely play an important role in maintaining open water and mitigating the impact.

Beavers can help mitigate the effects of drought and should not be pushed away from wetlands for industrial and residential development, a University of Alberta study says.
Credit: Glynnis Hood, University of Alberta

They may be considered pests, but beaver can help mitigate the effects of drought, and because of that, their removal from wetlands to accommodate industrial, urban and agricultural demands should be avoided, according to a new University of Alberta study.

Related Articles


"Removal of beaver should be considered an environmental disturbance on par with in-filling, peat mining and industrial water extraction," said researcher Glynnis Hood, lead author on the study and an assistant professor of Environmental Sciences at the University of Alberta's Augustana Campus in Camrose, Canada.

In examining how beaver influenced some of Alberta's wetlands in Elk Island National Park over a 54-year period, Hood and her co-investigator, Professor Suzanne Bayley, discovered that the presence of beaver and their dams increased by up to nine times, the presence of open water.

Climate models predict the incidence of drought in parts of North America will increase in frequency and length over the next 100 years, and beaver will likely play an important role in maintaining open water and mitigating the impact, Hood said. The infilling and drainage of wetlands has increased to make way for urban and industrial expansion, and beaver colonies are being removed both inside and outside of protected areas, which means a continued loss of water resources, Hood noted.

"In times of drought they may be one of the most effective ways to mitigate wetland loss," said Hood. "Some people believe climate is driving everything, but the presence of beaver has a dramatic effect on the availability of open water in an area. Beaver are helping to keep water in areas that would otherwise be dry." Even during drought, where beaver were present, there was 60 per cent more open water than those same areas during previous drought periods when beaver were absent.

The study, published recently in the online edition of Biological Conservation, also found that temperature, precipitation and other climate variables were much less important than beaver in maintaining open water areas in the wetlands of the mixed-wood boreal forest.

The role of beaver in sustaining open water is critical for several reasons. Flooding caused by beaver dams provides habitat and water resources used by land animals and amphibians, and even provides water for livestock. It can also recharge groundwater reserves.

The study was supported by funding from the Canadian Circumpolar Institute, Alberta Sport, Recreation, Parks and Wildlife Foundation and the Friends of the Elk Island Society.


Story Source:

The above story is based on materials provided by University of Alberta. Note: Materials may be edited for content and length.


Cite This Page:

University of Alberta. "Busy Beavers Can Help Ease Drought." ScienceDaily. ScienceDaily, 26 February 2008. <www.sciencedaily.com/releases/2008/02/080220130511.htm>.
University of Alberta. (2008, February 26). Busy Beavers Can Help Ease Drought. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2008/02/080220130511.htm
University of Alberta. "Busy Beavers Can Help Ease Drought." ScienceDaily. www.sciencedaily.com/releases/2008/02/080220130511.htm (accessed March 5, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Thursday, March 5, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Tourists Visit Rare Grey Whales in Mexico

Raw: Tourists Visit Rare Grey Whales in Mexico

AP (Mar. 4, 2015) — Once nearly extinct, grey whales now migrate in their thousands to Mexico&apos;s Vizcaino reserve in Baja California, in search of warmer waters to mate and give birth. Tourists flock to the reserve to see the whales, measuring up to 49 feet long. (March 4) Video provided by AP
Powered by NewsLook.com
Raw: Injured Miners Treated After Blast

Raw: Injured Miners Treated After Blast

AP (Mar. 4, 2015) — An explosion ripped through a coal mine before dawn Wednesday in war-torn eastern Ukraine, killing at least one miner, officials said. Graphic video of injured miners being treated in a Donetsk hospital. (March 4) Video provided by AP
Powered by NewsLook.com
Australian Museum Shares Terrifying Goblin Shark With the World

Australian Museum Shares Terrifying Goblin Shark With the World

Buzz60 (Mar. 4, 2015) — The Australian Museum has taken in its fourth-ever goblin shark, a rare fish with an electricity-sensing snout and &apos;alien-like&apos; jaw. Mike Janela (@mikejanela) takes a look. Video provided by Buzz60
Powered by NewsLook.com
Chile's Villaricca Volcano Calm, Red Alert Remains

Chile's Villaricca Volcano Calm, Red Alert Remains

AFP (Mar. 4, 2015) — A red alert continues in the area around southern Chile&apos;s Villarrica volcano, though activity dropped since its eruption overnight on Monday. Duration: 00:40 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins