Ecosystem resilience despite large-scale altered hydroclimatic conditions

Guillermo E. Ponce Campos, M. Susan Moran, Alfredo Huete, Yongguang Zhang, Cynthia Bresloff, Travis E. Huxman, Derek Eamus, David D. Bosch, Anthony R. Buda, Stacey A. Gunter, Tamara Heartsill Scalley, Stanley G. Kitchen, Mitchel McClaran, W. Henry Mcnab, Diane S. Montoya, Jack A. Morgan, Debra P C Peters, E. John Sadler, Mark S. Seyfried, Patrick J. Starks

Research output: Contribution to journalArticle

227 Citations (Scopus)

Abstract

Climate change is predicted to increase both drought frequency and duration, and when coupled with substantial warming, will establish a new hydroclimatological model for many regions. Large-scale, warm droughts have recently occurred in North America, Africa, Europe, Amazonia and Australia, resulting in major effects on terrestrial ecosystems, carbon balance and food security. Here we compare the functional response of above-ground net primary production to contrasting hydroclimatic periods in the late twentieth century (1975-1998), and drier, warmer conditions in the early twenty-first century (2000-2009) in the Northern and Southern Hemispheres. We find a common ecosystem water-use efficiency (WUE e: Above-ground net primary production/ evapotranspiration) across biomes ranging from grassland to forest that indicates an intrinsic system sensitivity to water availability across rainfall regimes, regardless of hydroclimatic conditions. We found higher WUE e in drier years that increased significantly with drought to a maximum WUE e across all biomes; and a minimum native state in wetter years that was common across hydroclimatic periods. This indicates biome-scale resilience to the interannual variability associated with the early twenty-first century drought - that is, the capacity to tolerate low, annual precipitation and to respond to subsequent periods of favourable water balance. These findings provide a conceptual model of ecosystem properties at the decadal scale applicable to the widespread altered hydroclimatic conditions that are predicted for later this century. Understanding the hydroclimatic threshold that will break down ecosystem resilience and alter maximum WUE e may allow us to predict land-surface consequences as large regions become more arid, starting with water-limited, low-productivity grasslands.

Original languageEnglish (US)
Pages (from-to)349-352
Number of pages4
JournalNature
Volume494
Issue number7437
DOIs
StatePublished - Feb 21 2013

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Ecosystem
Droughts
Water
Northern Africa
Food Supply
Climate Change
North America
Carbon

ASJC Scopus subject areas

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Cite this

Ponce Campos, G. E., Moran, M. S., Huete, A., Zhang, Y., Bresloff, C., Huxman, T. E., ... Starks, P. J. (2013). Ecosystem resilience despite large-scale altered hydroclimatic conditions. Nature, 494(7437), 349-352. https://doi.org/10.1038/nature11836

Ecosystem resilience despite large-scale altered hydroclimatic conditions. / Ponce Campos, Guillermo E.; Moran, M. Susan; Huete, Alfredo; Zhang, Yongguang; Bresloff, Cynthia; Huxman, Travis E.; Eamus, Derek; Bosch, David D.; Buda, Anthony R.; Gunter, Stacey A.; Scalley, Tamara Heartsill; Kitchen, Stanley G.; McClaran, Mitchel; Mcnab, W. Henry; Montoya, Diane S.; Morgan, Jack A.; Peters, Debra P C; Sadler, E. John; Seyfried, Mark S.; Starks, Patrick J.

In: Nature, Vol. 494, No. 7437, 21.02.2013, p. 349-352.

Research output: Contribution to journalArticle

Ponce Campos, GE, Moran, MS, Huete, A, Zhang, Y, Bresloff, C, Huxman, TE, Eamus, D, Bosch, DD, Buda, AR, Gunter, SA, Scalley, TH, Kitchen, SG, McClaran, M, Mcnab, WH, Montoya, DS, Morgan, JA, Peters, DPC, Sadler, EJ, Seyfried, MS & Starks, PJ 2013, 'Ecosystem resilience despite large-scale altered hydroclimatic conditions', Nature, vol. 494, no. 7437, pp. 349-352. https://doi.org/10.1038/nature11836
Ponce Campos GE, Moran MS, Huete A, Zhang Y, Bresloff C, Huxman TE et al. Ecosystem resilience despite large-scale altered hydroclimatic conditions. Nature. 2013 Feb 21;494(7437):349-352. https://doi.org/10.1038/nature11836
Ponce Campos, Guillermo E. ; Moran, M. Susan ; Huete, Alfredo ; Zhang, Yongguang ; Bresloff, Cynthia ; Huxman, Travis E. ; Eamus, Derek ; Bosch, David D. ; Buda, Anthony R. ; Gunter, Stacey A. ; Scalley, Tamara Heartsill ; Kitchen, Stanley G. ; McClaran, Mitchel ; Mcnab, W. Henry ; Montoya, Diane S. ; Morgan, Jack A. ; Peters, Debra P C ; Sadler, E. John ; Seyfried, Mark S. ; Starks, Patrick J. / Ecosystem resilience despite large-scale altered hydroclimatic conditions. In: Nature. 2013 ; Vol. 494, No. 7437. pp. 349-352.
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