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Interactions between elevated CO 2 concentration, nitrogen and water: effects on growth and water use of six perennial plant species
Author(s) -
Arp W. J.,
Van Mierlo J. E. M.,
Berendse F.,
Snijders W.
Publication year - 1998
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1046/j.1365-3040.1998.00257.x
Subject(s) - nitrogen , biomass (ecology) , moisture , perennial plant , chemistry , growing season , water content , agronomy , greenhouse , environmental science , environmental chemistry , biology , geotechnical engineering , organic chemistry , engineering
Two experiments are described in which plants of six species were grown for one full season in greenhouse compartments with 350 or 560 μ mol mol –1 CO 2 . In the first experiment two levels of nitrogen supply were applied to study the interaction between CO 2 and nitrogen. In the second experiment two levels of water supply were added to the experimental set‐up to investigate the three‐way interaction between CO 2 , nitrogen and water. Biomass and biomass distribution were determined at harvests, while water use and soil moisture were monitored throughout the experiments. In both experiments a positive effect of CO 2 on growth was found at high nitrogen concentrations but not at low nitrogen concentrations. However, plants used much less water in the presence of low nitrogen concentrations. Drought stress increased the relative effect of elevated CO 2 on growth. Available soil moisture was used more slowly at high CO 2 during drought or at high nitrogen concentrations, while at low nitrogen concentrations decreased water use resulted in an increase in soil moisture. The response to the treatments was similar in all the species used. Although potentially faster growing species appeared to respond better to high CO 2 when supplied with a high level of nitrogen, inherently slow‐growing species were more successful at low nitrogen concentrations.