Oecologia

, Volume 145, Issue 3, pp 354–363 | Cite as

Hydraulic redistribution in three Amazonian trees

  • Rafael S. Oliveira
  • Todd E. Dawson
  • Stephen S. O. Burgess
  • Daniel C. Nepstad
Ecophysiology

Abstract

About half of the Amazon rainforest is subject to seasonal droughts of 3 months or more. Despite this drought, several studies have shown that these forests, under a strongly seasonal climate, do not exhibit significant water stress during the dry season. In addition to deep soil water uptake, another contributing explanation for the absence of plant water stress during drought is the process of hydraulic redistribution; the nocturnal transfer of water by roots from moist to dry regions of the soil profile. Here, we present data on patterns of soil moisture and sap flow in roots of three dimorphic-rooted species in the Tapajós Forest, Amazônia, which demonstrate both upward (hydraulic lift) and downward hydraulic redistribution. We measured sap flow in lateral and tap roots of our three study species over a 2-year period using the heat ratio method, a sap-flow technique that allows bi-directional measurement of water flow. On certain nights during the dry season, reverse or acropetal flow (i.e.,in the direction of the soil) in the lateral roots and positive or basipetal sap flow (toward the plant) in the tap roots of Coussarea racemosa (caferana), Manilkara huberi (maçaranduba) and Protium robustum (breu) were observed, a pattern consistent with upward hydraulic redistribution (hydraulic lift). With the onset of heavy rains, this pattern reversed, with continuous night-time acropetal sap flow in the tap root and basipetal sap flow in lateral roots, indicating water movement from wet top soil to dry deeper soils (downward hydraulic redistribution). Both patterns were present in trees within a rainfall exclusion plot (Seca Floresta) and to a more limited extent in the control plot. Although hydraulic redistribution has traditionally been associated with arid or strongly seasonal environments, our findings now suggest that it is important in ameliorating water stress and improving rain infiltration in Amazonian rainforests. This has broad implications for understanding and modeling ecosystem process and forest function in this important biome.

Keywords

Amazon Deep roots Drought Hydraulic redistribution Root sap flow 

Notes

Acknowledgments

Our research was supported by grant from the NSF to D.C.N (DEB#), the A.W. Mellon Foundation and the University of California faculty COR grants to T.E.D., and a Department of Integrative Biology Summer research award and Beim award (University of California—Berkeley) to R.S.O as well as a CNPq scholarship (200129/99-6) to R.S.O. from the Government of Brazil. We thank all the staff of the LBA office and IPAM at Santarém and at Terra Rica, especially Levinaldo Seixas for his exceptional field assistance, Dr. David Ray and Marisa Tohver, for providing background data.

References

  1. Asner GP, Nepstad DC, Cardinot G, Ray D (2004) Drought stress and carbon uptake in an Amazon forest measured with spaceborne imaging spectroscopy. Proc Nat Acad Sci USA 101:6039–6044CrossRefPubMedGoogle Scholar
  2. Brooks JR, Meinzer FC et al (2002) Hydraulic redistribution of soil water during summer drought in two contrasting Pacific Northwest coniferous forests. Tree Physiol 22(15–16):1107–1117PubMedGoogle Scholar
  3. Burgess SSO, Adams MA, Turner NC, Ong CK (1998) The redistribution of soil water by tree root systems. Oecologia 115:306–311CrossRefGoogle Scholar
  4. Burgess SSO, Adams MA, Bleby T (2000a) Measurement of sap flow in roots of woody plants: a commentary. Tree Physiol 20:909–913Google Scholar
  5. Burgess SSO, Pate JS, Adams MA, Dawson TE (2000b) Seasonal water acquisition and redistribution in the Australian woody phreatophyte, Banksia prionotes. Ann Bot 85:215–224CrossRefGoogle Scholar
  6. Burgess SSO, Adams MA, Turner NC, Beverly CR, Ong CK, Khan AAH, Bleby TM (2001a) An improved heat pulse method to measure low and reverse rates of sap flow in woody plants. Tree Physiol 21:589–598Google Scholar
  7. Burgess SSO, Adams MA, Turner NC, Beverly CR, Ong CK, Khan AAH, Bleby TM (2001b) Correction: an improved heat pulse method to measure low and reverse rates of sap flow in woody plants. Tree Physiol 21:1157Google Scholar
  8. Burgess SSO, Adams MA, Turner NC, White DA, Ong CK (2001c) Tree roots: conduits for deep recharge of soil water. Oecologia 126:158–165CrossRefGoogle Scholar
  9. Caldwell MM, Dawson TE, Richards JH (1998) Hydraulic lift: consequences of water efflux from the roots of plants. Oecologia 113:151–161CrossRefGoogle Scholar
  10. Cunningham SC (2004) Stomatal sensitivity to vapour pressure deficit of temperate and tropical evergreen rainforest trees of Australia. Tress Struct Funct 18 (4):399–407Google Scholar
  11. Curran LM, Caniago I, Paoli GD, Astianti D, Kusneti M, Leighton M, Nirarita CE, Haeruman H (1999) Impact of El Niño and logging on canopy tree recruitment in Borneo. Science 286:2184–2188CrossRefPubMedGoogle Scholar
  12. Dawson TE (1993) Hydraulic lift and water use in plants: implications for performance, water balance and plant–plant interactions. Oecologia 95:565–574Google Scholar
  13. Dawson TE (1996) Determining water use by trees and forests from isotopic, energy balance, and transpiration analyses: the role of tree size and hydraulic lift. Tree Physiol 16:263–272PubMedGoogle Scholar
  14. Dias MAFS, Rutledge S, Kabat P, Dias PLS, Nobre C, Fisch G, Dolman AJ, Zipser E, Garstang M, Manzi AO, Fuentes JD, Rocha HR, Marengo J, Plana-Fattori A, Sa LDA, Alvala RCS, Andreae MO, Artaxo P, Gielow R, Gatti L (2002) Cloud and rain processes in a biosphere-atmosphere interaction context in the Amazon Region. J Geophys Res Atmospheres 107(D20)Google Scholar
  15. Emerman SH, Dawson TE (1996) Hydraulic lift and its influence on the water content of the rhizosphere: an example from sugar maple, Acer saccharum. Oecologia 108:273–278Google Scholar
  16. Espeleta JF, West JB et al (2004) Species-specific patterns of hydraulic lift in co-occurring adult trees and grasses in a sandhill community. Oecologia 138(3):341–349CrossRefPubMedGoogle Scholar
  17. Feddes RAH, Hoff M, Bruen P, Dawson TE, de Rosnay P, Dirmeyer, Jackson RB, Kabat P, Kleidon A, Lilly A, Pitman AJ (2001) Modeling root water uptake in hydrological and climate models. Bull Am Meteorol Soc 82(12):2797–2810CrossRefGoogle Scholar
  18. Ford CR, McGuire MA, Mitchell RJ, Teskey RO (2004) Assessing variation in the radial profile of sap flux density in Pinus species and its effect on daily water use. Tree Physiol 24:241–249PubMedGoogle Scholar
  19. Goldammer JG (1999) Forests on fire. Science 284 (5421):1782–1783CrossRefGoogle Scholar
  20. Goulden ML, Miller SD, Rocha HR, Menton MC, Freitas HC, Silva Figueira AM, Sousa CAD (2004) Diel and seasonal patterns of tropical forest CO2 exchange. Ecol Appl 14(4):S42—S54CrossRefGoogle Scholar
  21. Hodnett MG, Oyama MD, Tomasella J, Marques Filho AO (1996) Comparisons of long-term soil water storage behaviour under pasture and forest in three areas of Amazônia. In: Gash JHC, Nobre CA, Roberts JM, and Victoria RL (eds) Amazonian deforestation and climate. Wiley, New York, pp 57–78Google Scholar
  22. Horton JL, Hart SC (1998) Hydraulic lift: a potentially important ecosystem process. Trends Ecol Evol 13:232–235CrossRefGoogle Scholar
  23. Hulme M, Vilmer D (1998) A climate change scenario for the tropics. Clim Change 39:145–176CrossRefGoogle Scholar
  24. Jackson RB, Sperry JS, Dawson TE (2000) Root water uptake and transport: using physiological processes in global predictions. Trends Plant Sci 5:484–491CrossRefGoogle Scholar
  25. Jipp P, Nepstad DC, Cassel K, Carvalho CJR (1998) Deep soil moisture storage and transpiration in forests and pastures of seasonally-dry Amazônia. Clim Change 39:395–412CrossRefGoogle Scholar
  26. Kleidon A, Heimann M (1999) Deep-rooted vegetation, Amazonian deforestation, and climate: results from a modelling study. Global Ecol Biogeograph 8:397–405CrossRefGoogle Scholar
  27. Lee JE, Oliveira RS, Dawson TE, Fung I (2005) Root functioning modifies seasonal climate. Proc Natl Acad Sci USA (in review)Google Scholar
  28. Ludwig F, Dawson TE et al (2003) Hydraulic lift in Acacia tortilis trees on an East African savanna. Oecologia 134(3):293–300PubMedGoogle Scholar
  29. Ludwig F, de Kroon H, Berendse F, Prins HHT (2004) The influence of savanna trees on nutrient, water and light availability and the understory vegetation. Plant Ecol 170:93–105CrossRefGoogle Scholar
  30. Nepstad DC, Moutinho PRS, Dias-Filho MB, Davidson EA, Cardinot G, Markewitz D, Figueiredo R, Viana N, Lefebvre PA, Ray DG, Chambers JQ, Barros L, Ishida FY, Belk E, Schwalbe K (2002) The effects of rainfall exclusion on canopy processes and biogeochemistry of an Amazon forest. J Geophys Res 107:1–18CrossRefGoogle Scholar
  31. Nepstad DC, Carvalho CJR d, Davidson EA, Jipp P, Lefebvre PA, Negreiros GH, Silva ED, Stone TA, Trumbore SE, Vieira S (1994) The role of deep roots in the hydrological and carbon cycles of Amazonian forests and pastures. Nature 372:666–669CrossRefGoogle Scholar
  32. Nepstad DC, Veríssimo A, Alencar A, Nobre CA, Lima E, Lefebvre PA, Schlesinger P, Potter C, Moutinho PRS, Mendoza E, Cochrane MA, Brooks V (1999) Large-scale impoverishment of Amazonian forests by logging and fire. Nature 398:505–508CrossRefGoogle Scholar
  33. Nepstad DC, Lefebvre P, Da Silva UL, Tomasella J, Schlesinger P, Solorzano L, Moutinho P, Ray D, Benito JG (2004) Amazon drought and its implications for forest flammability and tree growth: a basin-wide analysis. Global Change Biol 10:704–717CrossRefGoogle Scholar
  34. Pausch RC, Grote EE, Dawson TE (2000) Estimating water use by sugar maple trees: important considerations when using heat-pulse methods in trees with large functional sapwood volumes. Tree Physiol 20:217–227PubMedGoogle Scholar
  35. Ribeiro JF, Walter BMT (1998) Fitofisionomias do Bioma Cerrado. In: Sano MS, Almeida SP (eds) Cerrado, Ambiente e flora. Brasília, DF EMBRAPA/CPAC pp 89–152Google Scholar
  36. Richards JH, Caldwell MM (1987) Hydraulic lift—substantial nocturnal water transport between soil layers by Artemisia tridentata roots. Oecologia 73(4):486–489CrossRefGoogle Scholar
  37. Rocha HR, Goulden ML, Miller SD, Menton MC, Pinto LDVO, Freitas HC, Figueira AMS (2004) Seasonality of water and heat fluxes over a tropical forest in eastern Amazônia. Ecol Appl 14(4):22–32CrossRefGoogle Scholar
  38. Ryel RJ, Caldwell MM et al (2002) Hydraulic redistribution in a stand of Artemisia tridentata: evaluation of benefits to transpiration assessed with a simulation model. Oecologia 130(2):173–184Google Scholar
  39. Ryel RJ, Caldwell MM et al (2003) Rapid soil moisture recharge to depth by roots in a stand of Artemisia tridentata. Ecology 84(3):757–764CrossRefGoogle Scholar
  40. Saleska SR, Miller SD, Matross DM, Goulden ML, Wofsy SC, da Rocha HR, de Camargo PB, Crill P., Daube BC, de Freitas HC, Hutyra L, Keller M, Kirchhoff V, Menton M, Munger JW, Pyle EH, Rice AH, Silva H (2003) Carbon in amazon forests: unexpected seasonal fluxes and disturbance-induced losses. Science 302:1554–1557CrossRefPubMedGoogle Scholar
  41. Scholz FG, Bucci SJ et al (2002) Hydraulic redistribution of soil water by neotropical savanna trees. Tree Physiol 22(9):603–612PubMedGoogle Scholar
  42. Sternberg LDS, Moreira MZ et al (2002) Uptake of water by lateral roots of small trees in an Amazonian Tropical Forest. Plant Soil 238(1):151–158CrossRefGoogle Scholar
  43. Trenberth KE, Hoar TJ (1997) El Niño and climate change. Geophys Res Lett 24:3057–3060CrossRefGoogle Scholar
  44. Wan CG, Xu WW, Sosebee RE, Machado S, Archer T (2000) Hydraulic lift in drought-tolerant and susceptible maize hybrids. Plant Soil 219:117–126CrossRefGoogle Scholar
  45. Wan CG, Yilmaz I et al (2002) Seasonal soil-water availability influences snakeweed, root dynamics. J Arid Environ 51(2):255–264CrossRefGoogle Scholar
  46. Whitmore TC (1998) An introduction to tropical rain forests, 2nd edn. Oxford University Press, OxfordGoogle Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Rafael S. Oliveira
    • 1
  • Todd E. Dawson
    • 1
  • Stephen S. O. Burgess
    • 1
    • 2
  • Daniel C. Nepstad
    • 3
  1. 1.Department of Integrative BiologyUniversity of CaliforniaBerkeleyUSA
  2. 2.School of Plant BiologyUniversity of Western AustraliaCrawleyAustralia
  3. 3.The Woods Hole Research CenterWoods HoleUSA

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