Ecosystems

, Volume 10, Issue 6, pp 987–998 | Cite as

Plant Spatial Pattern Predicts Hillslope Runoff and Erosion in a Semiarid Mediterranean Landscape

  • Susana Bautista
  • Ángeles G. Mayor
  • Jamal Bourakhouadar
  • Juan Bellot
Article

Abstract

The importance of the spatial pattern of vegetation for hydrological behavior in semiarid environments is widely acknowledged. However, there is little empirical work testing the hypothetical covariation between vegetation spatial structure and hillslope water and sediment fluxes. We evaluated the relationships between vegetation structural attributes (spatial pattern, functional diversity), soil surface properties (crust, stone, plant, and ground cover, and particle size distribution) and hillslope hydrologic functioning in a semiarid Mediterranean landscape; in particular, we tested whether decreasing patch density or coarsening plant spatial pattern would increase runoff and sediment yield at the hillslope scale. Runoff and sediment yield were measured over a 45-month period on nine 8 × 2-m plots that varied in vegetation type and spatial pattern. We grouped vegetation into functional types and derived plant spatial pattern attributes from field plot maps processed through a GIS system. We found that there was an inverse relationship between patch density and runoff, and that both runoff and sediment yields increased as the spatial pattern of vegetation coarsened. Vegetation pattern attributes and plant functional diversity were better related to runoff and sediment yield than soil surface properties. However, a significant relationship was found between physical crust cover and plant spatial pattern. Our results present empirical evidence for the direct relationship between the hydrologic functioning of semiarid lands and both the spatial pattern and the functional diversity of perennial vegetation, and suggest that plant spatial pattern, physical crust cover, and functional diversity may be linked through feedback mechanisms.

Keywords

ecohydrology spatial pattern runoff  erosion plant functional diversity ecosystem functioning surface properties semiarid hydrology 

REFERENCES

  1. Abrahams AD, Parsons AJ, Wainwright J. 1995. Effects of vegetation change on interrill runoff and erosion, Walnut Gulch, southern Arizona. Geomorphology 13:37–48CrossRefGoogle Scholar
  2. Balvanera P, Daily GC, Ehrlich PR, Ricketts TH, Bailey S-A, Kark S, Kremen C, Pereira H. 2001.Conserving biodiversity and ecosystem services. Science 291:2047PubMedCrossRefGoogle Scholar
  3. Barber A, Cabrera MR, Guardiola I. 1997. Sobre la cultura de l ′espart al territori valencià. Bancaja, ValenciaGoogle Scholar
  4. Bartley R, Roth CH, Ludwig J, McJannet D, Liedloff A, Corfield J, Hawdon A, Abbott B. 2006. Runoff and erosion from Australia’s tropical semi-arid rangelands: influence of ground cover for differing space and time scales. Hydrol Process 20:3317–33CrossRefGoogle Scholar
  5. Bascompte J, Rodríguez MÁ. 2001. Habitat patchiness and plant species richness. Ecol Lett 4:417–20CrossRefGoogle Scholar
  6. Bastin GN, Ludwig JA, Eager RW, Chewings H, Liedloff C. 2002. Indicators of landscape function: comparing patchiness metrics using remotely-sensed data from rangelands. Ecol Indic 1:247–60CrossRefGoogle Scholar
  7. Bellot J, Sánchez JR, Bonet A, Chirino E, Abdelli F, Hernández N, Martínez JM. 1998. Effect of different vegetation type cover on the soil water balance in semi-arid areas of south eastern Spain. Phys Chem Earth 24(4):353–7Google Scholar
  8. Belnap J. 2006. The potential roles of biological soil crusts in dryland hydrologic cycles. Hydrol Process 20:3159–78. doi: 10.1002/hyp.6325CrossRefGoogle Scholar
  9. Bergkamp G. 1998. A hierarchical view of the interactions of runoff and infiltration with vegetation and microtopography in semiarid shrublands. Catena 33:201–20CrossRefGoogle Scholar
  10. Bhark EW, Small EE. 2003. Association between plant canopies and the spatial patterns of infiltration in shrubland and grassland of the Chihuahuan desert, New Mexico. Ecosystems 6:185–96CrossRefGoogle Scholar
  11. Bochet E, Rubio JL, Poesen J. 1999. Modified topsoil islands within patchy Mediterranean vegetation in SE Spain. Catena 38:23–44CrossRefGoogle Scholar
  12. Bochet E, Poesen J, Rubio JL. 2006. Runoff and soil loss under individual plants of a semi-arid Mediterranean shrubland: influence of plant morphology and rainfall intensity. Earth Surf Process Landf 31:536–49CrossRefGoogle Scholar
  13. Boer M, Puigdefábregas J. 2005. Effects of spatially structured vegetation patterns on hillslope erosion in a semiarid Mediterranean environment: a simulation study. Earth Surf Process Landf 30:149–67CrossRefGoogle Scholar
  14. Bradford JM, Ferris JE, Remley PA. 1987. Interrill soil erosion processes: I. Effect of surface sealing on infiltration, runoff, and soil splash detachment. Soil Sci Soc Am J 51(6):1566–71CrossRefGoogle Scholar
  15. Breshears DD, Barnes FJ. 1999. Interrelationships between plant functional types and soil moisture heterogeneity for semiarid landscapes within the grassland/forest continuum: a unified conceptual model. Landsc Ecol 14:465–78CrossRefGoogle Scholar
  16. Calvo-Cases A, Boix-Fayos C, Imeson AC. 2003. Runoff generation, sediment movement and soil water behaviour on calcareous (limestone) slopes of some Mediterranean environments in southeast Spain. Geomorphology 50:269–91CrossRefGoogle Scholar
  17. Cammeraat LH, Imeson AC. 1999. The evolution and significance of soil-vegetation patterns following land abandonment and fire in Spain. Catena 37:107–27CrossRefGoogle Scholar
  18. Casermeiro MA, Molina JA, de la Cruz Caravaca MT, Hernando Costa J, Hernando Massanet MI, Moreno PS. 2004. Influence of scrubs on runoff and sediment loss in soils of Mediterranean climate. Catena 57:91–107CrossRefGoogle Scholar
  19. Cerdà A. 1997. The effect of patchy distribution of Stipa tenacissima L. on runoff and erosion. J Arid Environ 9:27–38Google Scholar
  20. Chirino E, Bonet A, Bellot J, Sánchez JR. 2006. Effects of 30-year-old Aleppo pine plantations on runoff, soil erosion, and plant diversity in a semi-arid landscape in south eastern Spain. Catena 65:19–29CrossRefGoogle Scholar
  21. Cross AF, Schlesinger WH. 1999. Plant regulation of soil nutrient distribution in the northern Chihuahuan Desert. Plant Ecol 145:11–25CrossRefGoogle Scholar
  22. Davenport DW, Breshears DD, Wilcox BP, Allen CD. 1998. Viewpoint: sustainability of piñon-juniper ecosystems: a unifying perspective of soil erosion thresholds. J Rangel Manage 51:231–40CrossRefGoogle Scholar
  23. Eldridge DJ, Zaady E, Shachak M. 2000. Infiltration through three contrasting biological soil crusts in patterned landscapes in the Negev, Israel. Catena 40:323–36CrossRefGoogle Scholar
  24. Elwell HA, Stocking MA. 1976. Vegetal cover to estimate soil erosion hazard in Rhodesia. Geoderma 15:61–70CrossRefGoogle Scholar
  25. Foster TE, Brooks JR. 2005. Functional groups based on leaf physiology: are they spatially and temporally robust? Oecologia 144:337–52PubMedCrossRefGoogle Scholar
  26. Green RSB. 1992. Soil physical properties of three geomorphic zones in a semi-arid mulga woodland. Aust J Soil Res 30:55–69CrossRefGoogle Scholar
  27. Greig-Smith P. 1983. Quantitative plant ecology. Blackwell Scientific Publications, OxfordGoogle Scholar
  28. Gustafson EJ. 1998. Quantifying landscape spatial pattern: what is the state of the art? Ecosystems 1:143–56CrossRefGoogle Scholar
  29. Le Houérou HN. 2001. Biogeography of the arid steppeland north of the Sahara. J Arid Environ 48:103–28CrossRefGoogle Scholar
  30. Li B-L, Archer S. 1997. Weighted mean patch size: a robust index for quantifying landscape structure. Ecol Model 102:353–61CrossRefGoogle Scholar
  31. Loreau M, Naeem S, Inchausti P, Bengtsson J, Grime JP, Hector A, Hooper DU, Huston MA, Raffaelli D, Schmid B, Tilman D, Wardle DA. 2001. Biodiversity and ecosystem functioning: current knowledge and future challenges. Science 294:804–8PubMedCrossRefGoogle Scholar
  32. Ludwig JA, Tongway DJ. 1995. Spatial organisation of landscapes and its function in semi-arid woodlands, Australia. Landsc Ecol 10:51–63CrossRefGoogle Scholar
  33. Ludwig JA, Bastin GN, Eager RW, Karfs R, Ketner P, Pearce G. 2000. Monitoring Australian rangeland sites using landscape function indicators and ground- and remote-based techniques. Environ Monit Assess 64:167–78CrossRefGoogle Scholar
  34. Ludwig JA, Eager RW, Bastin GN, Chewings VH, Liedloff A. 2002. A leakiness index for assessing landscape function using remote sensing. Landsc Ecol 17:157–71CrossRefGoogle Scholar
  35. Ludwig JA, Bastin GN, Chewings VH, Eager RW, Liedloff AC. 2007. Leakiness: a new index for monitoring the health of arid and semiarid landscapes using remotely sensed vegetation cover and elevation data. Ecol Indic 7:442–454CrossRefGoogle Scholar
  36. Maestre FT. 2004. On the importance of patch attributes, environmental factors and past human impacts as determinants of perennial plant species richness and diversity in Mediterranean semiarid steppes. Divers Distrib 10:21–9CrossRefGoogle Scholar
  37. Maestre FT, Bautista S, Cortina J, Bellot J. 2001. Potential of using facilitation by grasses to establish shrubs on a semiarid degraded steppe. Ecol Appl 11:1641–55CrossRefGoogle Scholar
  38. Maestre FT, Huesca M, Zaady E, Bautista S, Cortina J. 2002 Infiltration, penetration resistance and microphytic crust composition in contrasted microsites within a Mediterranean semi-arid steppe. Soil Biol Biochem 34:895–8CrossRefGoogle Scholar
  39. Morin J, Benyamini Y, Michaeli A. 1981. The effect of raindrop impact on the dynamics of soil surface crusting and water movement in the profile. J Hydrol 52:321–35CrossRefGoogle Scholar
  40. Poesen J, Ingelmo-Sánchez F, Mücher H. 1990. The hydrological response of soil surfaces to rainfall as affected by cover and position of rock fragments in the top layer. Earth Surf Process Landforms 15:653–71CrossRefGoogle Scholar
  41. Pickett STA, White PS. 1985. The ecology of natural disturbance and patch dynamics. Academic, New YorkGoogle Scholar
  42. Puigdefábregas J. 2005. The role of vegetation patterns in structuring runoff and sediment fluxes in drylands. Earth Surf Process Landforms 30:133–47CrossRefGoogle Scholar
  43. Puigdefábrefas J, Sánchez G. 1996. Geomorphological implications of vegetation patchiness on semi-arid slopes. In: Anderson M, Brooks S, Eds. Advances in Hillslope processes. London: Wiley. pp 1027–60Google Scholar
  44. Puigdefábregas J, Mendizábal T. 1998. Perspectives on desertification: western Mediterranean. J Arid Environ 39:209–24CrossRefGoogle Scholar
  45. Puigdefábregas J, Solé A, Gutierrez L, Barrio G, Boer M. 1999. Scales and processes of water and sediment redistribution in drylands: results from the Rambla Honda field site in Southeast Spain. Earth Sci Rev 48:39–70CrossRefGoogle Scholar
  46. Reid KD, Wilcox B, Breshears D, MacDonald L. 1999. Runoff and erosion in a piñon-juniper woodland: influence of vegetation patches. Soil Sci Soc Am J 63:1869–79CrossRefGoogle Scholar
  47. Reynolds JF, Virginia RA, Schlesinger WH. 1997. Defining functional types for models of desertification. In: Shugart HH, Smith TM, Woodward FI, Eds. Plant functional types: their relevance to ecosystem properties and global change. Cambridge: Cambridge University Press. pp. 195–216Google Scholar
  48. Schlesinger WH, Abrahams AD, Parsons AJ, Wainwright J. 1999 Nutrient losses in runoff from grassland and shrubland in Southern New Mexico: I. Rainfall simulation experiments Biogeochemistry 45:21–34Google Scholar
  49. Thornes JB, Ed. 1990. Vegetation and erosion. England: WileyGoogle Scholar
  50. Tilman D. 1999. The ecological consequences of changes in biodiversity: a search for general principles. Ecology 80:1455–74Google Scholar
  51. Tongway DJ, Ludwig JA. 1997. The conservation of water and nutrients within landscapes. In: Ludwig JA, Tongway DJ, Freudenberger DO, Noble JC, Hodgkinson KC, Eds. Landscape ecology, function and management: principles from Australia´s rangelands. Melbourne: CSIRO. pp 13–22Google Scholar
  52. Wainwright J, Parsons AJ, Abrahams AD. 2000. Plot-scale studies of vegetation, overland flow and erosion interactions: case studies from Arizona and New Mexico. Hydrol Process 14:2921–43CrossRefGoogle Scholar
  53. Wilcox BP, Breshears DD, Allen CD. 2003. Ecohydrology of a resource-conserving semiarid woodland: effects of scale and disturbance. Ecol Monogr 73:223–39CrossRefGoogle Scholar
  54. Wu XB, Thurow TL, Whisenant SG. 2000. Fragmentation and changes in hydrologic function of tiger bush landscapes, south-west Niger. J Ecol 88:790–800CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Susana Bautista
    • 1
  • Ángeles G. Mayor
    • 1
  • Jamal Bourakhouadar
    • 1
  • Juan Bellot
    • 1
  1. 1.Dpto. de EcologíaUniversidad de AlicanteAlicanteSpain

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