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Ozone exposure of field-grown winter wheat affects soil mesofauna in the rhizosphere
A 2-year open-top chamber experiment with field-grown winter wheat ( Triticum aestivum L. cv. Astron) was conducted to examine the effects of ozone on plant growth and selected groups of soil mesofauna in the rhizosphere. From May through June in each year, plants were exposed to two levels of O 3:...
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Published in: | Environmental pollution (1987) 2009-12, Vol.157 (12), p.3357-3362 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A 2-year open-top chamber experiment with field-grown winter wheat (
Triticum aestivum L. cv. Astron) was conducted to examine the effects of ozone on plant growth and selected groups of soil mesofauna in the rhizosphere. From May through June in each year, plants were exposed to two levels of O
3: non-filtered (NF) ambient air or NF+ 40 ppb O
3 (NF+). During O
3 exposure, soil sampling was performed at two dates according to different plant growth stages. O
3 exposure reduced above- and below-ground plant biomass in the first year, but had little effect in the second year. The individual density of enchytraeids, collembolans and soil mites decreased significantly in the rhizosphere of plants exposed to NF+ in both years. Differences were highest around anthesis, i.e. when plants are physiologically most active. The results suggest that elevated O
3 concentrations may influence the dynamic of decomposition processes and the turnover of nutrients.
Ozone reduced the individual densities of enchytraeids, collembolans and soil mites in the rhizosphere of winter wheat indirectly via the plant–soil-system. |
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ISSN: | 0269-7491 1873-6424 |
DOI: | 10.1016/j.envpol.2009.06.031 |