@conference {50269,
	title = {Precipitation and nitrogen interactions in arid ecosystems},
	booktitle = {Ecological Society of America Abstracts},
	series = {93rd ESA Annual Meetings},
	year = {2008},
	month = {August 4-8, 2008},
	pages = {COS 89-8},
	address = {Milwaukee, WI},
	abstract = {Arid and semi-arid ecosystems are among the most impoverished terrestrial systems in terms of water and nitrogen (N) availability. Productivity (NPP) is generally low, soil N pools are small and N loss through percolation is assumed to be negligible. Increased water availability can stimulate both N plant uptake (and hence NPP) and microbial N mineralization, but controls on N cycling are still poorly understood because of confounding temporal effects. We conducted an experiment with five levels of water input (-80\% reduced PPT, -50\% reduced, ambient PPT, +50\% increased, and 80\% increased PPT) and 2 levels of N fertilization in the Northern Chihuahuan desert (NM, USA) and estimated inorganic N pools, in situ net N mineralization and N leaching loss from the upper-root zone of N-NO-3 and N-NH-4.},
	keywords = {abstract, nitrogen, terrestrail},
	author = {Lara Reichmann and O. E. Sala and Debra C. Peters}
}
