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Nitrogen deposition and UV stressor impacts in Canyonlands National Park as affected by climatic pulse events

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Belnap, Jayne, Caldwell, Martyn M, Ehleringer, James R, Evans, R David, and Sanford Jr, Robert L, Nitrogen deposition and UV stressor impacts in Canyonlands National Park as affected by climatic pulse events: .

Summary

Biological soil crusts, composed primarily of photosynthetic cyanobacteria, algae, lichens and mosses, play a key role in many ecosystem functions of semi-arid and arid ecosystems around the world (Belnap and Lange 2001). They often cover plant interspaces in undisturbed areas (Kleiner and Harper 1972) and thus can constitute 70% or more of the living ground cover (Belnap 1995). These soil crusts are critical in the stabilization of soils and reduce both wind and water erosion (Belnap and Gillette 1997, 1998). They influence many processes that determine soil fertility, including carbon and nitrogen fixation, dust capture, and mineral chelation. They are often the dominant source of nitrogen (N) in desert ecosystems (Evans and Ehleringer [...]

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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 Nitrogen deposition and UV stressor impacts in Canyonlands National Park as affected by climatic pulse events

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