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1997•Journal of Experimental BotanyOpen access

Stem hydraulic conductance of European beech (Fagus sylvaticaL.) and pedunculate oak (Quercus roburL.) grown in elevated CO2

JAMES EDWARD HEATH, Gerhard Kerstiens, Melvin Thomas Tyree

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Abstract

Over two seasons in c. 600 ppm CO2, oak had lower stomatal conductance in CO2-enriched compared to amblent air. Beech showed no response to CO2 concentration on sunny days. Mirroring this pattern, exposure to elevated CO2 reduced whole-shoot hydraulic conductance per unit leaf area in oak, but not in beech.

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Over two seasons in c. 600 ppm CO2, oak had lower stomatal conductance in CO2-enriched compared to amblent air. Beech showed no response to CO2 concentration on sunny days. Mirroring this pattern, exposure to elevated CO2 reduced whole-shoot hydraulic conductance per unit leaf area in oak, but not in beech.

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Available abstract

Over two seasons in c. 600 ppm CO2, oak had lower stomatal conductance in CO2-enriched compared to amblent air. Beech showed no response to CO2 concentration on sunny days. Mirroring this pattern, exposure to elevated CO2 reduced whole-shoot hydraulic conductance per unit leaf area in oak, but not in beech.

Key concepts: Beech, Fagus sylvatica, Quercus robur, Fagaceae, Oak forest, Botany, Stomatal conductance, Chemistry

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Stem hydraulic conductance of European beech (Fagus sylvaticaL.) and pedunculate oak (Quercus roburL.) grown in elevated CO2 — Research Paper | ScholarLens