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Cheatgrass (Bromus tectorum L.) and seasonal patterns of soil phosphorus availability in arid ecosystems

Citation

Maxwell Richardson, Jayne Belnap, Sarah Gopalani, Robert L Sanford Jr, and Nathan J Wojcik, Cheatgrass (Bromus tectorum L.) and seasonal patterns of soil phosphorus availability in arid ecosystems: .

Summary

Seasonal changes in soil phosphorus (P) availability are not yet known for many ecosystems. We report seasonal changes in several pools of soil phosphorus, including plant available P from the Mojave Desert and Colorado Plateau. In addition we show that cheatgrass changes soil P fractions in unexpected and ecologically significant ways. Monthly soil samples (0-10 cm) from four sites in Canyonlands National Park in southeast Utah, are analyzed for P with a modified Hedley P fractionation method. Labile P (plant available) peaks in spring and autumn with significant monthly variation. Surprisingly, HCl extractable P changes as well, with a pattern inverse to that of labile P. Each of these sites has considerable Bromus tectorum L. (cheatgrass) [...]

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  • Upper Colorado River Basin

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<p> From Source - Mendeley RIS export<br> On - Wed Dec 08 20:27:59 CST 2010</p>

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Title Citation Cheatgrass (Bromus tectorum L.) and seasonal patterns of soil phosphorus availability in arid ecosystems

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note<p> Notes</p>
tableOfContents<p> Table of Contents</p>
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