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Title: Impacts of precipitation variability on plant species and community water stress in a temperate deciduous forest in the central US

Journal Article · · Agricultural and Forest Meteorology
 [1];  [2];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Missouri, Columbia, MO (United States)
  3. Univ. of Texas at Austin, Austin, TX (United States)

Variations in precipitation regimes can shift ecosystem structure and function by altering frequency, severity and timing of plant water stress. There is a need for predictively understanding impacts of precipitation regimes on plant water stress in relation to species water use strategies. Here we first formulated two complementary, physiologically-linked measures of precipitation variability (PV) - Precipitation Variability Index (PVI) and Average Recurrence Interval of Effective Precipitation (ARIEP). We then used nine-year continuous measurements of Predawn Leaf Water Potential Integral (PLWPI) in a central US forest to relate PVI and ARIEP to actual plant water availability and comparative water stress responses of six species with different capacities to regulate their internal water status. We found that PVI and ARIEP explained nearly all inter-annual variations in PLWPI for all species as well as for the community scaled from species measurements. The six species investigated showed differential sensitivities to variations in precipitation regimes. Their sensitivities were reflected more in the responses to PVI and ARIEP than to the mean precipitation rate. Further, they exhibited tradeoffs between responses to low and high PV. Finally, PVI and ARIEP were closely correlated with temporal integrals of positive temperature anomalies and vapor pressure deficit. We suggest that the comparative responses of plant species to PV are part of species-specific water use strategies in a plant community facing the uncertainty of fluctuating precipitation regimes. In conclusion, PVI and ARIEP should be adopted as key indices to quantify physiological drought and the ecological impacts of precipitation regimes in a changing climate.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725; FG02-03ER63683
OSTI ID:
1265922
Alternate ID(s):
OSTI ID: 1397577
Journal Information:
Agricultural and Forest Meteorology, Vol. 217; ISSN 0168-1923
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

References (68)

Injury and Death or Recovery of Trees in Prairie Climate journal February 1945
Improvement of growth conditions and gas exchange of Fagus sylvatica L. seedlings planted below a recently thinned Pinus sylvestris L. stand journal March 2004
Differences in stomatal responses and root to shoot signalling between two grapevine varieties subjected to drought journal January 2010
Successional trends and apparent Acer saccharum regeneration failure in an oak-hickory forest in central Missouri, USA journal March 2009
Tree die-off in response to global change-type drought: mortality insights from a decade of plant water potential measurements journal May 2009
Appendix: A critical examination of rainfall variability measures used in behavioral ecology studies journal July 1996
Timing of climate variability and grassland productivity journal February 2012
Characteristics and trends in various forms of the Palmer Drought Severity Index during 1900–2008 journal January 2011
Predawn disequilibrium between plant and soil water potentials in two cold-desert shrubs journal August 1999
Predawn plant water potential does not necessarily equilibrate with soil water potential under well-watered conditions journal November 2001
Investigating Interannual Variability of Precipitation at the Global Scale: Is There a Connection with Seasonality? journal August 2012
Morphological Response to Competition in Red Alder: The Role of Water journal August 1993
Diurnal and seasonal trends of water relations in five co-occurring chasmophytic species journal May 2007
Plant Responses to Water Stress journal June 2002
Changes in Intense Precipitation over the Central United States journal February 2012
Direct and indirect effects of atmospheric conditions and soil moisture on surface energy partitioning revealed by a prolonged drought at a temperate forest site journal January 2006
Reliable estimation of biochemical parameters from C3 leaf photosynthesis-intercellular carbon dioxide response curves: Estimating FvCB model parameters journal June 2010
Drought-influenced mortality of tree species with different predawn leaf water dynamics in a decade-long study of a central US forest journal January 2015
Increased rainfall variability and reduced rainfall amount decreases soil CO2 flux in a grassland ecosystem journal February 2005
A Review of Twentieth-Century Drought Indices Used in the United States journal August 2002
Contingent productivity responses to more extreme rainfall regimes across a grassland biome journal December 2009
Canopy and litter interception of rainfall by hardwoods of eastern United States journal June 1965
Plant Responses to Water Stress journal June 1973
Observational- and model-based trends and projections of extreme precipitation over the contiguous United States: JANSSEN ET AL. journal February 2014
The influence of drought on red oak group species growth and mortality in the Missouri Ozarks journal July 1995
Nocturnal transpiration causing disequilibrium between soil and stem predawn water potential in mixed conifer forests of Idaho journal April 2007
Diurnal Pattern of Water Potential in Woody Plants journal December 1968
Consequences of More Extreme Precipitation Regimes for Terrestrial Ecosystems journal October 2008
Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress journal July 2001
Drought tolerance, xylem sap abscisic acid and stomatal conductance during soil drying: a comparison of canopy trees of three temperate deciduous angiosperms journal July 1998
A new look at water transport regulation in plants journal July 2014
Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought? journal June 2008
The mechanisms of carbon starvation: how, when, or does it even occur at all?: Commentary journal March 2010
Mechanisms Linking Drought, Hydraulics, Carbon Metabolism, and Vegetation Mortality journal January 2011
The interdependence of mechanisms underlying climate-driven vegetation mortality journal October 2011
More Intense, More Frequent, and Longer Lasting Heat Waves in the 21st Century journal August 2004
Drought response strategies define the relative contributions of hydraulic dysfunction and carbohydrate depletion during tree mortality journal December 2012
A simple method to improve the estimation of the relationship between rainfall and crop yield journal September 2007
Water stress integral--a link between short-term stress and long-term growth journal December 1988
Desert Ecosystems: Environment and Producers journal November 1973
Elusive drought: uncertainty in observed trends and short- and long-term CMIP5 projections journal January 2013
Changes in Forest Composition in Central Missouri: 1968-1982 journal October 1988
Seasonal and diurnal patterns in leaf gas exchange of Eucalyptus globulus trees growing in Portugal journal April 1986
Seasonal variation in competitive effect on water stress and pine responses journal July 1994
Ecohydrology of water-controlled ecosystems journal August 2002
Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress journal July 2001
Aerosols, Climate, and the Hydrological Cycle journal December 2001
Patterns of tree dieback in Queensland, Australia: the importance of drought stress and the role of resistance to cavitation journal April 2004
Precipitation, dynamical intermittency, and sporadic randomness journal August 2010
A Vegetational Description of a Mid-Missouri Forest Using Gradient Analysis Techniques journal April 1972
Environmental control of leaf water conductance in conifers journal March 1976
Long-term effects of drought on wild and cultivated plants in the Negev desert: I. Maximal Rates of Net Photosynthesis journal April 1980
How do trees die? A test of the hydraulic failure and carbon starvation hypotheses: How do trees die? journal June 2013
Asymmetrical effects of mesophyll conductance on fundamental photosynthetic parameters and their relationships estimated from leaf gas exchange measurements: Asymmetrical mesophyll conductance effects journal November 2013
Growth‐induced water potentials and the growth of maize leaves journal March 2002
The influence of predawn leaf water potential on stomatal responses to atmospheric water content at constant Ci and on stem hydraulic conductance and foliar ABA concentrations journal February 1999
Global warming and changes in drought journal December 2013
A dynamic model for water flow in a single tree: evidence that models must account for hydraulic architecture journal September 1988
Correction of Flow Resistances of Plants Measured From Covered and Exposed Leaves journal November 1981
Modelling rainfall interception by vegetation of variable density using an adapted analytical model. Part 1. Model description journal July 2001
Multimodel projections of catchment-scale precipitation regime journal May 2008
Changing Frequency of Heavy Rainfall over the Central United States journal January 2013
Managing productivity and drought risk in Eucalyptus globulus plantations in south-western Australia journal December 2009
Positive impacts of precipitation intensity on monthly CO2 fluxes in North America journal January 2013
Environmental controls on water use efficiency during severe drought in an Ozark Forest in Missouri, USA: ENVIRONMENTAL CONTROL ON WATER USE EFFICIENCY journal December 2009
Simulating leaf area of corn plants at contrasting water status journal June 2009
A review of drought indices journal December 2011
Altered precipitation regime affects the function and composition of soil microbial communities on multiple time scales journal October 2013

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Land‐Atmosphere Responses to a Total Solar Eclipse in Three Ecosystems With Contrasting Structure and Physiology journal January 2019
The importance of drought–pathogen interactions in driving oak mortality events in the Ozark Border Region journal December 2017
Testing a land model in ecosystem functional space via a comparison of observed and modeled ecosystem flux responses to precipitation regimes and associated stresses in a Central U.S. forest: Test Model in Ecosystem Functional Space journal July 2016
Advancing global change biology through experimental manipulations: Where have we been and where might we go? journal November 2019
Long-term spatio-temporal precipitation variations in China with precipitation surface interpolated by ANUSPLIN journal January 2020