To investigate the effects of atmospheric deposition on the Sonoran Desert ecosystem, the CNDep project has established long-term monitoring and experimental plots at sites located upwind, in the core, and downwind of greater Phoenix as part of CAP’s long-term experimental program.
In addition to monitoring nitrogen deposition rates at each of these locations, the research team is adding nitrogen (N) and phosphorus (P) to experimental plots containing creosote plants (Larrea tridentata) semiannually (June and December). Responses of annual and perennial plants, and soil properties and processes to deposition and fertilization are assessed throughout the year.
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