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Effects of water and nutrient availability on physiological-responses of woody species to elevated CO2.

Kerstiens, Gerhard and Townend, J. and Heath, James and Mansfield, Terence (1995) Effects of water and nutrient availability on physiological-responses of woody species to elevated CO2. Forestry, 68 (4). pp. 303-315.

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Abstract

The growth responses to elevated CO2 found in experiments are highly variable and depend on other experimental parameters such as irrigation, fertilization, light regime, etc. As yet, the strength or even the sign of most interactions is all but impossible to predict from first principles. Experiments in ambient and CO2-enriched ambient air (+250 p.p.m.) have been conducted in specially adapted greenhouses (Solardomes) at Lancaster University for the past four seasons on Sitka spruce (Picea sitchensis (Bong.) Carr.), wild cherry (Prunus avium L.), beech (Fagus sylvatica L.) and pedunculate oak (Quercus robur L.). These experiments are reviewed together with other published studies on interactive effects of elevated CO2 and water and nutrient supply on physiological processes, in particular gas exchange, in tree species. It is often assumed that drought tolerance will increase in elevated CO2 because of a suppression of stomatal conductance and an increase in instantaneous water use efficiency. There is, however, some evidence that such effects could be more than offset in beech by CO2-induced increases in leaf area. It is tentatively suggested that in beech, drought tolerance could already have been reduced by the increase in atmospheric CO2 over the last century.

Item Type: Article
Journal or Publication Title: Forestry
Uncontrolled Keywords: LOBLOLLY-PINE SEEDLINGS ; ATMOSPHERIC CO2 ; CARBON-DIOXIDE ; GAS-EXCHANGE ; PHOTOSYNTHETIC ACCLIMATION ; LIQUIDAMBAR-STYRACIFLUA ; TAEDA SEEDLINGS ; GROWTH ; PLANTS ; ENRICHMENT
Subjects: Q Science > QK Botany
G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 51337
Deposited By: ep_importer_pure
Deposited On: 17 Nov 2011 12:42
Refereed?: Yes
Published?: Published
Last Modified: 17 Oct 2014 08:57
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/51337

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