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

Visible leaf injury of Trifolium repens versus Lolium perenne after ozone exposure in solardomes

The dataset consists of proportions of ozone injured or senesced leaves from a study which investigated how the presence of competing species in a community affects these two common responses to ozone. Monocultures and mixtures of Trifolium repens and Lolium perenne were grown in large containers and were exposed in solardomes to either a rural episodic ozone profile (AOT40 (Accumulated Ozone Threshold exposure of 40 parts per billion) of 12.86 ppm h) or control conditions (AOT40 of 0.02 ppm h) for 12 weeks. The proportion of ozone-injured or senesced leaves was determined in different regions of the canopy, the upper canopy (>14cm high), the canopy edge and the inner canopy, by separating injured/senesced leaves from healthy leaves. The experiment was carried out at the CEH Bangor Air Pollution Facility. This work was funded by the Centre for Ecology & Hydrology Integrating Fund Initiative

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). Visible leaf injury of Trifolium repens versus Lolium perenne after ozone exposure in solardomes. NERC Environmental Information Data Centre. https://doi.org/10.5285/bc4d0325-b67b-4fff-a14b-6e06edf397bd

 

© 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

This study has investigated how the presence of competing species in a community affects two common responses to ozone: visible injury and senescence. Monocultures and mixtures of Trifolium repens and Lolium perenne were grown in large containers and were exposed in solardomes to either a rural episodic ozone profile (AOT40 of 12.86 ppm h) or control conditions (AOT40 of 0.02 ppm h) for 12 weeks. The proportion of ozone-injured or senesced leaves was different in the different regions of the canopy. The highest proportions of injured/senesced leaves were in the plant material growing at the edge of the canopy and the upper canopy, with a significantly lower proportion of injured leaves in the inner canopy. The presence of L. perenne increased the proportion of ozone-injured leaves in T. repens at the final harvest, whilst the presence of T. repens decreased the proportion of senesced leaves in L. perenne. In L. perenne, the proportion of injured leaves at the edge and inner canopy decreased significantly when grown in competition, whilst for T. repens the reverse effect occurred in the inner canopy only. Different mechanisms appeared to influence the interaction between response to ozone and competitors in these two species. In L. perenne the response to ozone may have been related to nitrogen supply, whereas in T. repens canopy structure was more important.

Correspondence/contact details

Hayes, F.
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 grassland,  Lolium perenne nitrogen,  plant canopy,  Pollution Pollution & Environmental Risk senescence,  solardome,  solar domes,  Trifolium repens
INSPIRE Theme
Atmospheric Conditions