Plant cover under precipitation and nitrogen manipulation treatments at the Jornada Basin LTER site, 2006-2008

This data package contains plot cover data from a precipitation and
nitrogen manipulation experiment conducted on the Jornada
Experimental Range from 2006-2008. The objective of the study was to
understand the interaction of precipitation and nitrogen
fertilization on aboveground net primary productivity (ANPP)
legacies. Rain-out shelters or supplemental irrigation were used to
create 5 levels of precipitation: -80% and -50% reduced, ambient
control, and +50% and +80% increased PPT. Half of the plots were
randomly assigned to receive ammonium nitrate fertilizer. Plant
cover was sampled with a line intercept method in fall 2006 before
any treatments began, then again in fall 2007 and 2008 after
treatments had been applied. Also available are soil moisture data
from this study in data package knb-lter-jrn.210278001. For further
information and results, see: Throop, H., L. G. Reichmann, O. Sala, and S. Archer. (2012),
Response of dominant grass and shrub species to water manipulation:
an ecophysical basis for shrub invasion in a Chihuahuan desert
grassland. Oecologia 169: 373-383.
https://doi.org/10.1007/s00442-011-2217-4 Reichmann, L. G., O. E. Sala, and D. P. C. Peters. (2013), Water
controls on nitrogen transformations and stocks in an arid
ecosystem. Ecosphere 4(1):11. <link xlink:href="https://doi.org/10.1890/ES12-00263.1">https://doi.org/10.1890/ES12-00263.1</link> Reichmann, L.G., Sala, O.E. and Peters, D.P.C. (2013), Precipitation
legacies in desert grassland primary production occur through
previous‐year tiller density. Ecology, 94: 435-443.
https://doi.org/ <link xlink:href="https://doi.org/10.1890/12-1237.1">10.1890/12-1237.1</link>