Abstract
On sites with shallow soil in semi-arid climate conditions, whiteleaf manzanita (Arctostaphyllos viscida) and Pacific madrone (Arbutus menziesii) utilize water from the bedrock. Roots of these plants occupy rock fissures as small as 100 μm. Although the root stele remains cylindrical in shape without visible mechanical stress, the cortex may become flat, creating “wing-like” structures on the sides of the stele. Fine particles of soil and rock that fill the space between root cortex and rock matrices create good contact for water flow.
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References
Baligar V C, Nash V E, Hare M L and Price J A 1975 Soybean root anatomy as influenced by soil bulk density. Agron. J. 67, 842–844.
Bennie A T P 1991 Growth and mechanical impedance. In Plant Roots: the Hidden Half. Books in Soils, Plants and the Environment. Eds. YWaisel, AEshel and UKafkafi. pp 393–414. Marcel Dekker, New York.
Cannon W A 1911 The root habits of desert plants. Carnegie Inst. Washington Publ. 131. 92 p.
Cannon W A 1924 General and physiological features of the vegetation of the more arid portions of southern Africa, with notes on the climatic environment. Carnegie Inst. Washington Publ. 354. 159 p.
Cooper W S 1922 The broad-sclerophyll vegetation of California. An ecological study of the chaparral and its related communities. Carnegie Inst Washington Publ. 319. 124 p.
Duteau J 1987 Contribution des réserves hydriques profondes du calcaire à Astérie compact à l'alimentation en eau de la vigne dans le Bordelais. Agronomie 7, 859–865.
Esau K 1965 Plant Anatomy. 2nd Ed. Wiley, New York. 767 p.
Jones D P and Graham R C 1993 Water-holding characteristics of weathered granitic rock in chaparral and forest ecosystems. Soil Sci. Soc. Am. J. 57, 256–261.
Kummerow J 1981 Structure of roots and roots systems. In Ecosystems of the World. Vol. 11. Mediterranean-Type Shrublands. Eds. FdiCastri, D WGoodall and R LSpecht. pp 269–288. Elsevier, Amsterdam, The Netherlands.
Moreshet S and Huck M G 1989 Dynamics of water permeability. In Plant Roots: the Hidden Half. Books in Soils, Plants and the Environment. Eds. YWaisel, AEshel and UKafkafi. pp 605–626. Marcel Dekker, New York.
Oppenheimer H R 1956 Pénétration active des racines de buissons méditerraéens dans les roches calcaires. Bull. Res. Counc. Isr. Sect. D Bot. 5, 219–222.
Oppenheimer H R 1957 Further observation on roots penetrating into rocks and their structure. Bull. Res. Counc. Isr. Sect. D Bot. 6, 18–31.
Pabst R, Tappeiner J CII and Newton M 1990 Varying densities of Pacific madrone in a young stand in Oregon alter soil-water potential, plant moisture stress and growth of Douglas-fir. For. Ecol. Manage. 37, 267–283.
Pruess K and Wang J S 1987 Numerical modeling of isothermal and nonisothermal flow in unsaturated rock-review. In Flow and Transport through Unsaturated Fractured Rock. Eds. D DEvans and T JNicholson. pp 11–21. Geophys. Monogr. 42. American Geophysical Union, Washington, DC.
Wang Z Q, Newton M and Tappeiner J C II 1995 Competitive relations between Douglas-fir and Pacific madrone on shallow soils in a Mediterranean climate. For. Sci. (In press).
White D E and Newton M 1989 Competitive interactions of white leaf manzanita, herbs, Douglas-fir, and ponderosa pine in south-west Oregon. Can. J. For. Res. 19, 232–238.
Wiersum L K 1957 The relationship of the size and structural rigidity of pores to their penetration by roots. Plant and Soil 11, 75–85.
Zohary M and Orhansky G 1951 Ecological studies on lithophytes. Palest. Bot. Jerusalem Ser. 5, 119–128.
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Zwieniecki, M.A., Newton, M. Roots growing in rock fissures: Their morphological adaptation. Plant Soil 172, 181–187 (1995). https://doi.org/10.1007/BF00011320
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DOI: https://doi.org/10.1007/BF00011320