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Biological Phosphorus Cycling in Dryland Regions


Jayne Belnap, Biological Phosphorus Cycling in Dryland Regions: .


The relatively few studies done on phosphorus (P) cycling in arid and semiarid lands (drylands) show many factors that distinguish P cycling in drylands from that in more mesic regions. In drylands, most biologically relevant P inputs and losses are from the deposition and loss of dust. Horizontal and vertical redistribution of P is an important process. P is concentrated at the soil surface and thus vulnerable to loss via erosion. High pH and CaCO3 limit P bioavailability, and low rainfall limits microbe and plant ability to free abiotically bound P via exudates, thus making it available for uptake. Many invasive plants are able to access recalcitrant P more effectively than are native plants. As P availability depends on soil moisture [...]


Author :
Jayne Belnap

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  • Upper Colorado River Basin



From Source - Mendeley RIS export <br> On - Tue May 10 10:48:30 CDT 2011

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Title Citation Biological Phosphorus Cycling in Dryland Regions

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