Plant and Soil

, Volume 260, Issue 1–2, pp 225–236 | Cite as

Using stable oxygen isotopes to quantify the water source used for transpiration by native shrubs in the San Luis Valley, Colorado U.S.A.

  • Rodney A. Chimner
  • David J. Cooper
Article

Abstract

An understanding of the water source used by phreatophytic desert shrubs is critical for understanding how they function and respond to man-caused groundwater drawdowns. Shrubs can use primarily groundwater, precipitation recharged soil water, or a mixture of the two. If shrubs use primarily groundwater, a water table decline may reduce water availability and lead to high plant mortality. However, if shrubs can acquire precipitation recharged soil water, then groundwater decline could have less impact on plants. This study took place in the San Luis Valley, a large, arid, high elevation closed basin in south-central Colorado. We examined stable oxygen isotopes in precipitation, soil water from several depths, groundwater and plant xylem water to identify the likely water sources for the three most abundant shrubs in the valley: Sarcobatus vermiculatus (Hooker) Torrey, Chrysothamnus nauseosus (Pallas) Britton subsp. consimilis (Greene) Hall & Clements, and Chrysothamnus greenei (Gray) Greene. C. greenei is not known to be phreatophytic while S. vermiculatus and C. nauseosus may be phreatophytic. Mean annual San Luis Valley precipitation during the two years of study was 121 mm, with 67% occurring during the summer monsoon season of July through September. We found differences in water acquisition patterns by species, season, and along a depth to water table gradient. C. greenei only occurred in sites with a water table > 2.0 m deep, and utilized only soil water recharged by precipitation. At sites with a water table less then 2 m depth, S. vermiculatus and C. nauseosus utilized soil water from the top 0.5 m and shallow groundwater during the pre-monsoon and monsoon periods. A more complex water use pattern was found at sites with a water table deeper then 2 m. S. vermiculatus and C. nauseosus used both deep soil water and groundwater during 1996. During the pre-monsoon period in 1997, both shrubs utilized predominantly groundwater. However, during the 1997 monsoon season both species switched to utilize primarily precipitation recharged water acquired from the upper 0.3–0.4 m of soil. This is the first report that C. nauseosus can utilize summer precipitation. Our results support the hypothesis that plants utilize more summer rain recharged soil water in regions receiving a substantial proportion of annual precipitation during the summer.

Colorado phreatophyte stable oxygen isotopes water sources water uptake patterns 

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References

  1. Allison G B, Barnes C J, and Hughes M W 1983 The distribution of deuterium and O18 in dry soils. 2. Experimental. J Hydrol. 64, 377–397.Google Scholar
  2. BassiriRad H, Tremmel D C, Virginia R A, Reynolds J F, de Soyze A G and Brunell M H 1999 Short-term patterns in water and nitrogen acquisition by two desert shrubs following a simulated summer rain. Plant Ecol. 145, 27–36Google Scholar
  3. Branson F A, Miller R F and McQueen I S 1976 Moisture relation-ships of twelve northern desert shrub communities near Grand Junction, Colorado. Ecology 57, 1104–1124.Google Scholar
  4. Charles F L 1987 Evapotranspiration of phreatophytes in the San Luis Valley, Colorado. Colorado Water Resources Research Institute Technical Report No. 48.Google Scholar
  5. Cooper, D J, D'Amico, D R and Scott M L 2003 Physiological and morphological response patterns of Populus deltoides to alluvial groundwater pumping. Environ. Manage. 31, 215–226.Google Scholar
  6. Dawson T E 1993 Water sources of plants as determined from xylem-water isotopic composition: Perspectives on plant competition, distribution and water relations. In Stable isotopes and plant carbon-water relations. Eds. J R Ehleringer, A E Hall, and G D Farquhar. pp. 465–496. Academic Press, San Diego.Google Scholar
  7. Dawson T E and Ehleringer J R 1991 Streamside trees that do not use stream water: evidence from hydrogen isotope ratios. Nature 350, 335–337.Google Scholar
  8. Dawson T E and Pate J S 1996 Seasonal water uptake and movement in root systems of Australian phraeatophytic plants of dimorphic root morphology: Astable isotope investigation. Oecologia 107, 13–20.Google Scholar
  9. Donovan L A and Ehleringer J R 1994 Water stress and use of summer precipitation in a Great Basin shrub community. Funct. Ecol. 8, 289–297.Google Scholar
  10. Ehleringer J and Osmond C B 1989 Stable isotopes. In Plant Physiological Ecology. Field Methods and Instrumentation. Eds. R W Pearcy, J Ehleringer, H A Mooney, and P W Rundel. pp. 281–290. Chapman and Hall, New York.Google Scholar
  11. Ehleringer J R, Phillips S L, Schuster W S F and Sandquist D R 1991 Differential utilization of summer rains by desert plants. Oecologia 88, 430–434.Google Scholar
  12. Ehleringer J R and Dawson T E 1992 Water uptake by plants: Perspectives from stable isotope composition. Plant Cell Environ. 15, 1073–1082.Google Scholar
  13. Emery P A, Boettcher A J, Snipes R J, and McIntyre H J, Jr 1969 Hydrology of the San Luis Valley, South-Central Colorado. U.S.D.I., Geological Survey, Open File Report.Google Scholar
  14. Flanagan L B and Ehleringer J R 1991 Stable isotope composition of stem and leaf water: Applications to the use of plant water use. Funct. Ecol. 5, 270–277.Google Scholar
  15. Flanagan L B, Ehleringer J R and Marshall J D 1992 Differential uptake of summer precipitation among co-occurring trees and shrubs in a pinyon-juniper woodland. Plant Cell Environ. 15, 831–836.Google Scholar
  16. Groeneveld D P 1997 Vertical quadrat sampling and an extinction factor to calculate leaf area index. J. Arid Environ. 36, 475–485.Google Scholar
  17. Groeneveld D P, Grate D L, Hubbard P J, Munk D S, Novak P J, Tillemans B, Warren D C and Yamashita I S 1985 A field assessment of above-and belowground factors affecting transpiration in the Owens Valley, California. USDA Forest Service General Technical Report RM 120, 166–170.Google Scholar
  18. Groeneveld D P and Crowley D E 1988 Root systems response to flooding in three desert shrub species. Funct. Ecol. 2, 491–497.Google Scholar
  19. Lin G L and Sternberg, L da S L 1993 Hydrogen isotopic fractionation by plant roots during water uptake in coastal wetland plants. In Stable isotopes and plant carbon-water relations. Eds. J R Ehleringer, A E Hall and G D Farquhar. pp. 497–510. Academic Press, San Diego.Google Scholar
  20. Lin G L and Sternberg, L da S L 1994 Utilization of surface water by red mangrove (Rhizophora mangle L.): An isotopic study. Bull. Mar. Sci. 54, 94–102.Google Scholar
  21. Lin G, Phillips S L and Ehleringer J R 1996 Monsoonal precipitation responses of shrubs in a cold desert community on the Colorado Plateau. Oecologia 106, 8–17.Google Scholar
  22. Meinzer O E 1927 Plants as indicators of ground water. U.S. Geol. Survey Water Supply Paper 577. 95 pp.Google Scholar
  23. Mensforth L J, Thorburn P J, Tyerman S D and Walker G R 1994 Sources of water used by riparian Eucalyptus camaldulensis overlying highly saline groundwater. Oecologia 100, 21–28.Google Scholar
  24. Mozingo H N 1987 Shrubs of the Great Basin. University of Nevada Press, Reno. Schwinning S and Ehleringer J R 2001 Water use trade-offs and optimal adaptations to pulse-driven arid ecosystems. J. Ecol. 89, 464–480.Google Scholar
  25. Schwinning S, Davis K, Richardson L, Ehleringer J R 2002 Deuterium enriched irrigation indicates different forms of rain use in shrub/grass species of the Colorado Plateau. Oecologia 130, 345–355.Google Scholar
  26. Scott M L, Shafroth P B and Auble G T 1999 Response of riparian cottonwoods to alluvial water table declines. Environ. Manage. 23, 347–358.Google Scholar
  27. Sorenson S K, Dileanis P D and Branson F A 1989 Soil water and vegetation response to precipitation and changes in depth to ground water in Owens Valley, California. U.S. Geological Survey, Open-File Report 89–260. 66 pp.Google Scholar
  28. SPSS. 2000 SYSTAT 10.0 for Windows. SPSS, Chicago, Illinois, USA.Google Scholar
  29. Sternberg L da SL and Swart P K 1987 Utilization of freshwater and ocean water by coastal plants of southern Florida. Ecology 68, 1898–1905.Google Scholar
  30. Sternberg L da SL, Ish-Shalom-Gordon N, Ross M and O'Brien J 1991 Water relations of coastal plant communities near the ocean/freshwater boundary. Oecologia 88, 305–310.Google Scholar
  31. Thorburn P J, Walker G R 1993 The source of water transpired by Eucalyptus camaldulensis: Soil, groundwater, or streams? In Stable isotopes and plant carbon-water relations. Eds. J R Ehleringer, A E Hall, and G D Farquhar. pp. 511–527. Academic Press, San Diego.Google Scholar
  32. Toft C A, (1995) A 10-year demographic study of rabbitbrush (Chrysothamnus nauseosus): growth, survival and water limitation. Oecologia 101, 1–12.Google Scholar
  33. Welsh S L, Atwood N D, Goodrich S and Wiggins L C 1987 A Utah Flora. Great Basin Nat. Memoirs 9. 894 pp.Google Scholar
  34. White J WC, Cook E R, Lawrence J R and Broecker WS 1985 The D/H ratios of sap in trees: Implications for water sources and tree ring D/H ratios. Geochim. Cosmochim. Acta 49, 237–246.Google Scholar
  35. Williams D G and Ehleringer J R 2000 Intra-and interspecific variation for summer precipitation use in Pinyon-Juniper woodlands. Ecol. Monogr. 70, 517–537.Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Rodney A. Chimner
    • 1
  • David J. Cooper
    • 2
  1. 1.Natural Resources Ecology LaboratoryColorado State UniversityFort CollinsU.S.A
  2. 2.Department of Forest, Rangeland and Watershed Stewardship and Graduate Degree Program in EcologyColorado State UniversityFort CollinsU.S.A.

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