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Jornada Basin LTER Long-term Graphs
Jornada Basin Long Term Ecological Research
July 29, 2014
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Jornada Basin LTER Long-term Graphs

Climate Graphs:


Jornada Average Total Precipitation 1961-1990


Jornada Basin Annual Precipitation 1915-2004

Plant Graphs:


Cover and frequency of occurrence for each of five grass species through time on the Jornada Basin long-term 1 m2 quadrats.
Citation: Yao, J. D.P.C. Peters, K.M. Havstad, R.P. Gibbens, and J.E. Herrick. Multi-scale factors and long-term responses of Chihuahuan Desert grasses to drought. Landscape Ecology (in review).


Cover and frequency of occurrence for each of five grass species through time on the Jornada Basin long-term 1 m2 quadrats.
Citation: Yao, J. D.P.C. Peters, K.M. Havstad, R.P. Gibbens, and J.E. Herrick. Multi-scale factors and long-term responses of Chihuahuan Desert grasses to drought. Landscape Ecology (in review).


Recent analyses indicate that drought cannot explain temporal variation in grass loss across the Jornada. Black grama (Bouteloua eriopoda),
the dominant perennial grass on upland grasslands in the Chihuahuan Desert, went locally extinct on most (64%) research quadrats (1 m2) either during (ii) or shortly after the 1950s drought (iii). However, this species went locally extinct on 21% of research quadrats prior to the drought (i), and persists to present day on 15% of the quadrats (iv). Grass persistence was related to landscape context: quadrats located farther away from historic shrublands persisted longer than quadrats adjacent to shrublands. Data from one quadrat is shown to illustrate the dynamics for each type.
Peters, D.P.C., B.T. Bestelmeyer, J.E. Herrick, E. Fredrickson, H.C. Monger, and K.M. Havstad. Disentangling complex landscapes: new insights to forecasting arid and semiarid system dynamics. BioScience (in review).


Perennial grass cover and (b) coefficient of variation in grass cover through time for two locations (uplands, lowlands) based on 1 m2 permanent chart quadrats.
Peters, D. P. C., J. Yao, and K. M. Havstad. 2004. Insights to Invasive Species Dynamics from Desertification Studies. Weed Technology 18:1221-1225.

Disclaimer and Legal Statement: This material is based upon work supported by the National Science Foundation under Grant number DEB-0080412. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation or New Mexico State University.
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