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J. Silvertown, M. Dodd, K. McConway, J. Potts, M. Crawley (1994)
Rainfall, Biomass Variation, and Community Composition in the Park Grass ExperimentEcology, 75
J. Weltzin, G. McPherson (2000)
IMPLICATIONS OF PRECIPITATION REDISTRIBUTION FOR SHIFTS IN TEMPERATE SAVANNA ECOTONESEcology, 81
J. Joslin, M. Wolfe, P. Hanson (2000)
Effects of altered water regimes on forest root systemsNew Phytologist, 147
J. Wraith, J. Baker, T. Blake (1995)
Water uptake resumption following soil drought: a comparison among four barley genotypesJournal of Experimental Botany, 46
D. Lane, D. Coffin, W. Lauenroth (1998)
Effects of soil texture and precipitation on above-ground net primary productivity and vegetation structure across the Central Grassland region of the United StatesJournal of Vegetation Science, 9
G. Cuomo, B. Anderson, L. Young (1998)
Harvest frequency and burning effects on vigor of native grasses.Journal of Range Management, 51
R. Jackson, J. Canadell, J. Ehleringer, H. Mooney, O. Sala, E. Schulze (1996)
A global analysis of root distributions for terrestrial biomesOecologia, 108
P. Groisman, T. Karl, D. Easterling, R. Knight, P. Jamason, K. Hennessy, R. Suppiah, C. Page, J. Wibig, K. Fortuniak, V. Razuvaev, A. Douglas, E. Førland, P. Zhai (1999)
Changes in the Probability of Heavy Precipitation: Important Indicators of Climatic ChangeClimatic Change, 42
B. Casper, R. Jackson (1997)
PLANT COMPETITION UNDERGROUNDAnnual Review of Ecology, Evolution, and Systematics, 28
J. Reynolds, R. Virginia, P. Kemp, A. Soyza, D. Tremmel (1999)
Impact of drought on desert shrubs : Effects of seasonality and degree of resource island developmentEcological Monographs, 69
J. Wraith, C. Wright (1998)
Soil water and root growthHortscience, 33
C. Turner, J. Blair, R. Schartz, J. Neel (1997)
SOIL N AND PLANT RESPONSES TO FIRE, TOPOGRAPHY, AND SUPPLEMENTAL N IN TALLGRASS PRAIRIEEcology, 78
M. Volk, P. Niklaus, C. Körner (2000)
Soil moisture effects determine CO2 responses of grassland speciesOecologia, 125
T. Svejcar, R. Angell, Richard Miller (1999)
Fixed location rain shelters for studying precipitation effects on rangelandsJournal of Arid Environments, 42
A. Knapp, E. Medina (1999)
8 - Success of C 4 Photosynthesis in the Field: Lessons from Communities Dominated by C 4 Plants
Alan Knapp, John Briggs, J. Koelliker (2001)
Frequency and Extent of Water Limitation to Primary Production in a Mesic Temperate GrasslandEcosystems, 4
P. Fay, J. Carlisle, A. Knapp, J. Blair, S. Collins (2000)
Altering Rainfall Timing and Quantity in a Mesic Grassland Ecosystem: Design and Performance of Rainfall Manipulation SheltersEcosystems, 3
C. Owensby, J. Ham, A. Knapp, D. Bremer, L. Auen (1997)
Water vapour fluxes and their impact under elevated CO2 in a C4‐tallgrass prairieGlobal Change Biology, 3
J. Briggs, Greg Hoch, L. Johnson (2002)
Assessing the Rate, Mechanisms, and Consequences of the Conversion of Tallgrass Prairie to Juniperus virginiana ForestEcosystems, 5
D. Easterling, G. Meehl, C. Parmesan, S. Changnon, T. Karl, L. Mearns (2000)
Climate extremes: observations, modeling, and impacts.Science, 289 5487
Alan Knapp (1984)
Water relations and growth of three grasses during wet and drought years in a tallgrass prairieOecologia, 65
J. Weaver (1968)
Prairie Plants and Their Environment: A Fifty-year Study in the Midwest
A. Silletti, A. Knapp (2001)
Responses of the Codominant Grassland Species Andropogon gerardii and Sorghastrum nutans to Long-term Manipulations of Nitrogen and Water, 145
H. Bassirirad, M. Caldwell (1992)
Root growth, osmotic adjustment and NO3− uptake during and after a period of drought in Artemisia tridentataAustralian Journal of Plant Physiology, 19
I. Saeed, A. El-Nadi (1998)
Forage sorghum yield and water use efficiency under variable irrigationIrrigation Science, 18
R. Senock, J. Ham (1995)
Measurements of water use by prairie grasses with heat balance sap flow gaugesJournal of Range Management, 48
R. Pearcy (1990)
SUNFLECKS AND PHOTOSYNTHESIS IN PLANT CANOPIES, 41
P. Sims, J. Singh, W. Lauenroth (1978)
The structure and function of ten Western North American grasslands: I. Abiotic and vegetational characteristicsJournal of Ecology, 66
A. Knapp, Melinda Smith (2001)
Variation among biomes in temporal dynamics of aboveground primary production.Science, 291 5503
O. Sala, R. Golluscio, W. Lauenroth, A. Soriano (1989)
Resource partitioning between shrubs and grasses in the Patagonian steppeOecologia, 81
S. Seagle, S. McNaughton (1993)
Simulated effects of precipitation and nitrogen on Serengeti grassland productivityBiogeochemistry, 22
J. Briggs, A. Knapp (1995)
Interannual variability in primary production in tallgrass prairie: climate, soil moisture, topographic position, and fire as determinants of aboveground biomassAmerican Journal of Botany, 82
A. Knapp, E. Hamerlynck, C. Owensby (1993)
Photosynthetic and Water Relations Responses to Elevated CO2 in the C4 Grass Andropogon gerardiiInternational Journal of Plant Sciences, 154
G. Topp, J. Davis, A. Annan (1980)
Electromagnetic determination of soil water content: Measurements in coaxial transmission linesWater Resources Research, 16
O. Sala, W. Parton, L. Joyce, W. Lauenroth (1988)
Primary Production of the Central Grassland Region of the United StatesEcology, 69
P. Fay, J. Carlisle, Brett Danner, Michelle Lett, J. McCarron, C. Stewart, A. Knapp, J. Blair, S. Collins (2002)
Altered Rainfall Patterns, Gas Exchange, and Growth in Grasses and ForbsInternational Journal of Plant Sciences, 163
H. Epstein, W. Lauenroth, I. Burke, D. Coffin (1997)
PRODUCTIVITY PATTERNS OF C3 AND C4 FUNCTIONAL TYPES IN THE U.S. GREAT PLAINSEcology, 78
K. Williams, B. Wilsey, S. McNaughton, F. Banyikwa (1998)
Temporally variable rainfall does not limit yields of Serengeti grassesOikos, 81
A. Knapp, P. Fay, J. Blair, S. Collins, Melinda Smith, J. Carlisle, C. Harper, Brett Danner, Michelle Lett, J. McCarron (2002)
Rainfall Variability, Carbon Cycling, and Plant Species Diversity in a Mesic GrasslandScience, 298
A. Kuchler (1974)
A New Vegetation Map of KansasEcology, 55
H. Bassirirad, D. Tremmel, Ross Virginia, James Reynolds, A. Soyza, M. Brunell (1999)
Short-term patterns in water and nitrogen acquisition by two desert shrubs following a simulated summer rainPlant Ecology, 145
D. Hayes, T. Seastedt (1987)
Root dynamics of tallgrass prairie in wet and dry yearsBotany, 65
Rainfall variability is a key driver of ecosystem structure and function in grasslands worldwide. Changes in rainfall patterns predicted by global climate models for the central United States are expected to cause lower and increasingly variable soil water availability, which may impact net primary production and plant species composition in native Great Plains grasslands. We experimentally altered the timing and quantity of growing season rainfall inputs by lengthening inter-rainfall dry intervals by 50%, reducing rainfall quantities by 30%, or both, compared to the ambient rainfall regime in a native tallgrass prairie ecosystem in northeastern Kansas. Over three growing seasons, increased rainfall variability caused by altered rainfall timing with no change in total rainfall quantity led to lower and more variable soil water content (0–30 cm depth), a ~10% reduction in aboveground net primary productivity (ANPP), increased root to shoot ratios, and greater canopy photon flux density at 30 cm above the soil surface. Lower total ANPP primarily resulted from reduced growth, biomass and flowering of subdominant warm-season C4 grasses while productivity of the dominant C4 grass Andropogon gerardii was relatively unresponsive. In general, vegetation responses to increased soil water content variability were at least equal to those caused by imposing a 30% reduction in rainfall quantity without altering the timing of rainfall inputs. Reduced ANPP most likely resulted from direct effects of soil moisture deficits on root activity, plant water status, and photosynthesis. Altered rainfall regimes are likely to be an important element of climate change scenarios in this grassland, and the nature of interactions with other climate change elements remains a significant challenge for predicting ecosystem responses to climate change.
Oecologia – Springer Journals
Published: Jul 5, 2003
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