Hayes, F.; Mills, G.; Ashmore, M.

Biomass of Trifolium repens versus Lolium perenne after ozone exposure in solardomes

The data are biomass measurements from an ozone exposure experiment, during which Trifolium repens and Lolium perenne were exposed as both monocultures and two-species mixtures to an episodic rural ozone regime in large, well-watered containers within solardomes for 12 weeks. Treatments were elevated ozone (AOT40 (Accumulated Ozone Threshold exposure of 40 parts per billion) of 12.86 ppm h) or control conditions (AOT40 of 0.02 ppm h). Measurements were dry weight, with a cutting height of 7cm above soil level. The distribution of plant material within the canopy was determined by separating material growing in the upper canopy (>14cm) from the canopy edge and the inner canopy for both species. The experiments were carried out in the CEH Bangor Air Pollution Facility. Work was funded by the Centre for Ecology and Hydrology Integrating Fund Initiative. The observed decreases in photosynthetic efficiency and capacity in elevated ozone indicate that the ability of such ubiquitous vegetation to act as a sink for atmospheric carbon may be reduced in future climates.

Publication date: 2014-12-18

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Supporting documentation

Format of the dataset : Comma-separated values (CSV)

This dataset is made available under the terms of the Open Government Licence

You must cite: Hayes, F.; Mills, G.; Ashmore, M. (2014). Biomass of Trifolium repens versus Lolium perenne after ozone exposure in solardomes. NERC Environmental Information Data Centre. https://doi.org/10.5285/5de90f7a-dec9-4bd5-af52-d0873a09d25d

 

© Centre for Ecology & Hydrology (Natural Environment Research Council)

This dataset is part of the following

Where/When

Study area
Temporal extent
2007-04-30    to    2007-10-31

Supplemental information

Other useful information regarding this dataset:

Hayes, Felicity; Mills, Gina; Ashmore, Mike. 2010 How much does the presence of a competitor modify the within-canopy distribution of ozone-induced senescence and visible injury? Water, Air and Soil Pollution, 210. 265-276.
Hayes,F.; Mills, G.; Ashmore, M.. 2009 Effects of ozone on inter- and intra-species competition and photosynthesis in mesocosms of Lolium perenne and Trifolium repens. Environmental Pollution, 157 (1). 208-214.

Provenance & quality

Trifolium repens and Lolium perenne were exposed as both monocultures and two-species mixtures to an episodic rural ozone regime in large, well-watered containers within solardomes for 12 weeks. Treatments were elevated ozone (AOT40 of 12.86 ppm h) or control conditions (AOT40 of 0.02 ppm h). There were reductions in biomass for T. repens, but not L. perenne, and the proportion of T. repens decreased in ozone-exposed mixtures compared to the control. In addition, leaf biomass of T. repens was maintained at the expense of biomass partitioning to the stolons. The decreased growth corresponded with decreased photosynthetic capacity for T. repens, however, by the end of the exposure there was also decreased photosynthetic capacity of L. perenne, a species previously considered insensitive to ozone. The observed decreases in photosynthetic efficiency and capacity in elevated ozone indicate that the ability of such ubiquitous vegetation to act as a sink for atmospheric carbon may be reduced in future climates.

Correspondence/contact details

Centre for Ecology & Hydrology
Environment Centre Wales, Deiniol Road
Bangor
Gwynedd
LL57 2UW
United Kingdom
enquiries@ceh.ac.uk

Authors

Hayes, F.
Centre for Ecology & Hydrology
Mills, G.
Centre for Ecology & Hydrology
Ashmore, M.
University of York

Other contacts

Custodian
Environmental Information Data Centre
eidc@ceh.ac.uk
Publisher
NERC Environmental Information Data Centre
eidc@ceh.ac.uk

Spatial

Spatial representation type
Tabular (text)
Spatial reference system
WGS 84

Tags

Topic categories
Biota
Keywords
Abergwyngregyn competition,  grassland,  leaf,  ozone,  Pollution Pollution & Environmental Risk root,  solardome,  solar domes
INSPIRE Theme
Environmental Monitoring Facilities