Biological Phosphorus Cycling in Dryland Regions
Document Type
Contribution to a Book
Journal/Book Title/Conference
Phosphorus in Action
Volume
100
First Page
371
Publisher
Springer Berlin Heidelberg
Last Page
406
Publication Date
2011
Abstract
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 and temperature, climate change is expected to have large impacts on P cycling.
Recommended Citation
Belnap, J., 2011, Biological Phosphorus Cycling in Dryland Regions, in Bünemann, E. K. e. a., ed., Phosphorus in Action: Biological Processes in Soil Phosphorus Cycling, Volume 26: Berlin, Springer-Verlag Berlin Heidelberg, p. 371-406.
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