This dataset contains cover and biomass data collected starting in
2012 for a long-term precipitation variability manipulation
experiment at the Jornada Basin LTER site in southern New Mexico,
U.S.A. The study was designed to assess the effect of interannual
variability in precipitation on average aboveground net primary
productivity (ANPP) in Chihuahuan Desert grasslands. The study began
in 2009, has five annual precipitation treatments, and contains 50
plots (10 per treatment). This experiment uses precipitation
shelters and irrigation treatments to manipulate water inputs to 2.5
x 2.5 meter plots in a desert grassland. There are high, low, and
ambient (control) precipitation variability treatments. Ambient
plots receive natural precipitation each year, while variability
treatments alternate between 20% and 180% (high variability), or 50%
and 150% (low variability) of ambient precipitation each year. Plant
cover measurements are made annually in each plot, from which
biomass or net primary production are derived. This is an ongoing
study and the dataset will be updated yearly.
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Soil water content measurements in plots with experimentally altered precipitation variability at the Jornada Basin LTER site, 2011-ongoing
This dataset contains soil moisture data from a study at the Jornada
Experimental Range (JER) in southern New Mexico. The study was
designed to assess the effect of interannual variability in
precipitation on average aboveground net primary productivity (ANPP)
in Chihuahuan Desert grasslands. The study began in 2009 and has
five precipitation treatments (see Methods). While the study began
in 2009, contains 50 plots (10 per treatment) and is ongoing, these
data have only been collected since July 2011 in a subset of 20
plots (4 per treatment). This dataset is intended to provide
information about the amount of water in surface and deep soil
layers, as well as verify that experimental precipitation
manipulations are effective. This is an ongoing dataset that will be
updated yearly.
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- Award ID(s):
- 2025166
- PAR ID:
- 10477003
- Publisher / Repository:
- Environmental Data Initiative
- Date Published:
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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