Ozone critical levels for (semi-)natural vegetation dominated by perennial grassland species

Hayes, Felicity ORCID:; Harmens, Harry; Mills, Gina; Bender, Jürgen; Grünhage, Ludger. 2021 Ozone critical levels for (semi-)natural vegetation dominated by perennial grassland species. Environmental Science and Pollution Research, 28 (12). 15090-15098.

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New critical levels for ozone based on accumulated flux through stomata (phytotoxic ozone dose, POD), for temperate perennial grassland (semi-)natural vegetation, have been agreed for use within the Convention on Long-Range Transboundary Air Pollution. These were based on data from several experiments conducted under naturally fluctuating environmental conditions that were combined and analysed to give linear dose-response relationships. Dose-response functions and flux-based critical levels were derived based on biomass and flower number. These parameters showed a statistically significant decline with increasing accumulated stomatal ozone flux. The functions and critical levels derived are based on sensitive species and can be used for risk assessments of the damaging effect of ozone on temperate vegetation communities dominated by perennial grassland species. The critical level based on flower number was lower than that for biomass, representing the greater sensitivity of flower number to ozone pollution.

Item Type: Publication - Article
Digital Object Identifier (DOI):
UKCEH and CEH Sections/Science Areas: Soils and Land Use (Science Area 2017-)
UKCEH Fellows
ISSN: 0944-1344
Additional Information. Not used in RCUK Gateway to Research.: Publisher link (see Related URLs) provides a read-only full-text copy of the published paper.
Additional Keywords: ozone, biodiversity, flowering, stomata, critical level, biomass
NORA Subject Terms: Ecology and Environment
Related URLs:
Date made live: 25 Dec 2020 17:37 +0 (UTC)

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