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Do Beavers Promote the Invasion of Non-native Tamarix in the Grand Canyon Riparian Zone

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Mortenson, Susan G, Weisberg, Peter J, and Ralston, Barbara E, Do Beavers Promote the Invasion of Non-native Tamarix in the Grand Canyon Riparian Zone: .

Summary

Beavers (Castor canadensis Kuhl) can influence the competitive dynamics of plant species through selective foraging, collection of materials for dam creation, and alteration of hydrologic conditions. In the Grand Canyon National Park, the native Salix gooddingii C.R.Ball (Goodding?s willow) and Salix exigua Nutt. (coyote willow) are a staple food of beavers. Because Salix competes with the invasive Tamarix ramosissima Ledeb., land mangers are concerned that beavers may cause an increase in Tamarix through selective foraging of Salix. A spatial analysis was conducted to assess whether the presence of beavers correlates with the relative abundance of Salix and Tamarix. These methods were designed to detect a system-wide effect of selective [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:08:31 MDT 2012

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Title Citation Do Beavers Promote the Invasion of Non-native Tamarix in the Grand Canyon Riparian Zone

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