LTER: Long-Term Research at the Jornada Basin (LTER-VI)

New Mexico State University, Las Cruces NM

Investigators

Abstract

The overall goal of the Jornada Basin Long Term Ecological Research Program is to understand and quantify the mechanisms that generate alternative natural and human-dominated states in dryland ecosystems, and to predict future states and their consequences for the provisioning of ecosystem services. Based on long-term databases beginning in 1858, research over the next six years will focus on five types of dynamics: (1) a shift from perennial grasslands to desertified shrublands, (2) a reversal to grassland states, (3) transitions among shrub-dominated states, (4) invasion by non-native grasses, and (5) transitions to human-dominated states. This research combines rigorous hypothesis testing through initiation of new experiments, novel integration of long-term studies to address new questions, forecasts of alternative future landscapes and consequences for ecosystem services under a changing environment, and extension of cross-site and regional studies. Simulation modeling will improve understanding of current patterns and prediction of future dynamics. Training opportunities will be provided for graduate and undergraduate students at four Hispanic-serving institutions in New Mexico, Arizona, and Texas. A K-12 and teacher-training program will provide inquiry-based curricula, field trips, teacher workshops, and public education events. Research findings will be distributed to scientists, land managers, and educators via workshops, seminars, and an on-line newsletter. International collaborations will occur on five continents (North and South America, Asia, Europe, Australia) to address the global challenge of increasing desertification.