Biological phosphorus cycling in dryland regions

By:
Edited by: Else BunemannAstrid Oberson, and Emmanuel Frossard

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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

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Biological phosphorus cycling in dryland regions
DOI 10.1007/978-3-642-15271-9_15
Year Published 2011
Language English
Publisher Springer
Contributing office(s) Southwest Biological Science Center
Description 35 p.
Larger Work Type Book
Larger Work Title Phosphorus in Action
First page 371
Last page 406
Online Only (Y/N) N
Additional Online Files (Y/N) N