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Beaver dams create healthy downstream ecosystems

hydrologic processes during the peak flow and low flow periods, suggesting that beaver can create and maintain environments suitable for the formation and persistence of wetlands."

The study comes as the beaver population in Rocky Mountain National Park is dwindling. Approximately 30 of the animals currently live there, down from a high of nearly 600 estimated in 1940. The authors caution that additional reductions in the population could harm the current hydrologic balance in the river valley and affect the area's water cycle and soil conditions, potentially changing plant species and influencing the overall diversity of the ecosystem in the future. They suggest that although there are multiple explanations for the reduction in beaver population, such as alterations in the flow along the Colorado River, similar hydrologic effects downstream likely affect river systems worldwide.


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Source:American Geophysical Union


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