Abstract
We have assumed that changes in Quercus coccifera canopies along a rainfall gradient can be understood in terms of a system which optimizes net photosynthesis while minimizing water loss. This optimization process leads to perceptible differences in branch and leaf display patterns (Aber et al. 1982). The observed differences can be interpreted as drought-related adaptation mechanisms (Miller 1983) or due to modifications in the carbon allocation scheme. We further have assumed that stands on drier sites which undergo greater water stress should have low leaf area indices, while those on mesic sites should exhibit a tendency towards tall canopies with high leaf area indices. Our third assumption has been that changes in canopy structure will be accompanied by changes in rooting depth. In our case, the rooting depth is indirectly determined by measuring water uptake resistances, i.e. plant and soil resistances.
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References
Aber JD, Pastor J, Melillo JM (1982) Changes in forest canopy structure along a site quality gradient in southern Wisconsin. Am Midl Nat 108: 256–265
Campbell GS (1974) A simple method for determining unsaturated conductivity from moisture retention data. Soil Sci 117: 311–314
Cowan IR (1965) Transport of water in the soil-plant-atmosphere system. J Appl Ecol 2: 221–239
Feddes RA, Rijtema PE (1972) Water withdrawal by plant roots. J Hydrol 17: 33–59
Gholz HL (1982) Environmental limits on aboveground net primary production, leaf area, and biomass in vegetation zones of the Pacific Northwest. Ecol 63: 469–481
Gosh RK (1977) Determination of unsaturated hydraulic conductivity from moisture retention function. Soil Sci 124: 122–124
Grier CC, Running SW (1977) Leaf area of mature northwest coniferous forests: relation to site water balance. Ecol 58: 893–899
Miller PC (1983) Canopy structure of mediterranean-type shrubs in relation to heat and moisture. In: Kruger FH, Mitchell DT, Jarvis JUM (eds) Mediterranean-type Ecosystem. Springer, Berlin-Heidelberg-New York, p 133
Poole DK, Miller DC (1981) The distribution of plant water stress and vegetation characteristics in southern California chaparral. Am Midl Nat 105: 32–43
Rambal S (1982) Reflexions sur la prise en compte de la végétation et des caractéristiques hydrodynamiques du sol dans les modèles hydrologiques: le cas de bassins versants karstiques de la région nord Montpellièraine. Modélisation Mathématique et Simulation de Systèmes de l’Environnement. CNRS, Paris, p 85
Rambal S (1984) Water balance and pattern of root water uptake by a Quercus coccifera L. Evergreen scrub. Oecologia (Berl) 62: 18–25
Tenhunen JD, Lange OL, Harley PC, Beyschlag W, Meyer A (1985) Limitations due to water stress on leaf net photosynthesis of Quercus coccifera in the Portuguese evergreen scrub. Oecologia (Berl) 67: 23–30
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© 1987 Springer-Verlag Berlin Heidelberg
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Rambal, S., Leterme, J. (1987). Changes in aboveground structure and resistances to water uptake in Quercus coccifera along a rainfall gradient. In: Tenhunen, J.D., Catarino, F.M., Lange, O.L., Oechel, W.C. (eds) Plant Response to Stress. NATO ASI Series, vol 15. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70868-8_11
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DOI: https://doi.org/10.1007/978-3-642-70868-8_11
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