Abstract
A field experiment was established to quantify the effects of different amounts of rainfall on root growth and dry mass of belowground plant parts in three types of grassland ecosystems. Mountain (Nardus grassland), highland (wet Cirsium grassland), and lowland grassland (dry Festuca grassland) ecosystems were studied in 2006 and 2007. Roofs constructed above the canopy of grass stands and gravity irrigation systems simulated three climate scenarios: (1) rainfall reduced by 50%, (2) rainfall enhanced by 50%, and (3) the full natural rainfall of the current growing season. Experimentally reduced amounts of precipitation significantly affected both yearly root increments and total root dry mass in the highland grassland. Dry conditions in 2007 resulted in considerable reduction of total belowground dry mass in highland and mountain grasslands. Although not all differences in root biomass of studied grasslands were statistically significantly, some also showed a decrease in root increment and in the amount of belowground dry mass in dry conditions.
This is a preview of subscription content, access via your institution.




References
Andrzejewska L. 1991. Root production of some grass communities on peat soil in river valleys of Biebrza and Narew. Pol Ecol Stud 17:63–72
Arriaga L, Maya Y. 2007. Spatial variability in decomposition rates in a desert scrub of Northwestern Mexico. Plant Ecol 189:213–25
Bakker MR, Augusto L, Achat DL. 2006. Fine root distribution of trees and understory in mature stands of marine pine (Pinus pinaster) on dry and humid sites. Plant Soil 286:37–51
Beier C, Rasmussen L. 1994. Organic-matter decomposition in an acidic forest soil in Denmark as measured by the cotton strip assay. Scand J. For Res 9:106–14
Borken W, Savage K, Davidson EA, Trumbore SE. 2006. Effect of experimental drought on soil respiration and radiocarbon efflux from a temperate forest soil. Global Change Biol 12:177–93
Eissenstat DM, Yanai RD. 1997. The ecology of root lifespan. Adv Ecol Res 27:2–60
Fay PA, Carlisle JD, Knapp AK, Blair JM, Collins SL. 2000. Altering rainfall timing and quantity in a mesic grassland ecosystems: Design and performance of rainfall manipulation shelters. Ecosystems 3:308–19
Fay PA, Kaufman DM, Nippert JB, Carlisle JD, Harper CW. 2008. Changes in grassland ecosystem function due to extreme rainfall events: implications for responses to climate change. Global Change Biol 14:1600–8
Fiala K. 1993. Underground biomass in meadow stands. Rychnovská M, editor. Functioning of meadow ecosystems. Praha: Academia. p 133–53
Fischer Z, Niewinna M, Yasulbutaeva I. 2006. Intensity of organic matter decomposition in various landscapes of Caucasus (Daghestan). Pol J Ecol 54:105–16
Fitter AH, Graves JD, Self GK, Brown TK. 1998. Root production, turnover and respiration under two grassland types along an altitudinal gradient: influence of temperature and solar radiation. Oecologia 114:20–30
Hayes DC, Seastedt TR. 1987. Root dynamics of tallgrass prairie in wet and dry years. Can J Bot 65:787–91
Holub P. 2002. The expansion of Calamagrostis epigejos into alluvial meadows: comparison of aboveground biomass in relation to water regimes. Ekológia 21:27–37
Hui D, Jackson RB. 2005. Geographical and interannual variability in biomass partitioning in grassland ecosystems: a synthesis of field data. New Phytol 169:58–93
Ibrahim L, Proe MF, Cameron AD. 1997. Main effects of nitrogen supply and drought stress upon whole-plant carbon allocation in poplar. Can J For Res 27:413–9
Jakrlová J. 1971. Flooded meadow communities. An analysis of productivity in a dry year. Folia Geobot Phytotax 6:1–27
Kochy M, Wilson SD. 2004. Semiarid grassland responses to short-term variation in water availability. Plant Ecol 174:197–203
Kuchenbuch RO, Ingram KT, Buczko U. 2006. Effect of decreasing soil water content on seminal and lateral roots of young maize plants. J Plant Nutr Soil Sci 169:841–8
Lane RD, Coffin DP, Lauenroth WK. 2000. Changes in grassland canopy structure across a precipitation gradient. J Veg Sci 11:359–68
Lawlor DW. 1998: Plant responses to global change: temperature and drought stress. In: De Kok LJ, Stulen I, Eds. Responses of plant metabolism to air pollution and global change. Leiden: The Netherlands. pp 193–207
Oomes MJM, Mooi H. 1981. The effect of cutting and fertilization on floristiuc composition and production of an Arrhenatherion elatioris grassland. Vegetatio 47:233–9
Pandey CB, Singh JS. 1992. Rainfall and grazing effects on net primary productivity in a tropical savanna, India. Ecology 73:2007–21
Peek MS, Leffler AJ, Hipps L, Ivans S, Ryel RJ, Caldwell MM. 2006. Root turnover and relocation in the soil profile in response to seasonal soil water variation in a natural stand of Utah juniper (Juniperus osteosperma). Tree Physiol 26:1469–76
Pielota MN, Smucker JM. 1995. Fine root dynamics of alfa after multiple cuttings and during a late invasion by weeds. Agron J 87:1161–9
Qaderi MM, Kurepin LV, Reid DM. 2006. Growth and physiological responses of canola (Brasica napus) to three components of global climate changes: Temperature, carbon dioxide and drought. Physiol Plantarum 128:710–21
Rychnovská M. 1983. Grasslands: A multifunctional link between natural and man-made ecosystems. Ekológia (ČSSR) 2:337–45
Silvertown J, Dodd M, McConway K, Potts J, Crawley M. 1994. Rainfall, biomass variation, and community composition in the park grass experiment. Ecology 75:2430–7
Speidel B. 1976. Primary production and root activity of a Golden Oat meadow with different fertilizer treatments. Pol Ecol Stud 2:77–89
Stampfli A. 1992, Year-to-year changes in unfertilized meadows of great species richness detected by point quadrate analysis. Vegetatio 103:125–32
Stanton NL. 1988. The underground in grasslands. Ann Rev Ecol Syst 19:573–89
Tao FL, Yokozawa M, Hayashi Y, Lin E. 2003. Terrestrial water cycle and the impact of climate change. Ambio 32:295–301
Teklay T. 2007. Decomposition and nutrient release from pruning residues of two indigenous agroforestry species during the wet and dry seasons. Nutr Cycl Agroecosys 77:115–26
Titlyanova AA, Romanova IP, Kosykh NP, Mironycheva-Tokareva NP. 1999. Pattern and process in above-ground and below-ground components of grassland ecosystems. J Veg Sci 10:307–20
Tůma I. 2002. Release of nutrients from decomposing litter on deforested areas affected by air pollution in the Beskydy Mts. Ekológia 21:201–20
Valdés M, Asbjornsen H, Gómez-Cárdenas M, Juárez M, Vogt KA. 2006. Drought effects on fine-root and ectomycorrhizal-root biomass in managed Pinus oaxacana Mirov stands in Oaxaca, Mexico. Mycorrhiza 16:117–24
van Oorschot M, van Gaalen N, Maltby E, Mockler N, Spink A, Verhoeven J.T.A. 2000. Experimental manipulation of water levels in two French reiverine grassland soils. Acta Oecologica – Inter J Ecol 21:49–62
Walker MD, Webber PJ, Arnold EH, Ebertmay D. 1994. Effects of interannual climate variation on aboveground phytomass in alpine vegetation. Ecology 75:393–408
Yahdjian L, Sala OE. 2002. A rainout shelter design for intercepting different amounts of rainfall. Oecologia 133:95–101
Yahdjian L, Sala OE. 2006. Vegetation structure constrains primary production response to water availability in the Patagonian steppe. Ecology 87:952–62
Yahdjian L, Sala ES, Austin AT. 2006. Different controls of water input on litter decomposition and nitrogen dynamics in the Patagonian steppe. Ecosystems 9:128–41
Yang X, Wang MX, Huang Y, Wang YS. 2002. A one-compartment model to study soil carbon decomposition rate at equilibrium situation. Ecol Model 151:63–73
Acknowledgements
This research was supported by Grant Agency of the Czech Republic (Project No. 526/06/0556), and by projects No. AVOZ 60050516 and AVOZ 60870520. We are indebted to Prof. J.M. Bernard for his review of the text.
Author information
Authors and Affiliations
Corresponding author
Additional information
Author Contributions
KF conceived study and performed research in the field and laboratory and evaluated data and results and wrote the paper. IT conceived study and performed research in the field and evaluated data. PH conceived study and evaluated data and results and wrote the paper.
Rights and permissions
About this article
Cite this article
Fiala, K., Tůma, I. & Holub, P. Effect of Manipulated Rainfall on Root Production and Plant Belowground Dry Mass of Different Grassland Ecosystems. Ecosystems 12, 906–914 (2009). https://doi.org/10.1007/s10021-009-9264-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10021-009-9264-2