Holder, A.J.; Hayes, F.; Sharps, K.; Harmens, H.

Growth and physiological measurements of Leontodon hispidus and Succisa pratensis after ozone exposure and elevated nitrogen input from an ozone field release system, North Wales, 2016-2018

The data presented are growth and physiological measurements from an ozone exposure experiment, during which grassland forbs, Leontodon hispidus and Succisa pratensis were exposed to low, medium and high ozone treatments over three growing seasons, using an outdoor Free Air Ozone Enrichment system, and with and without the addition of nitrogen during the first year.

The plants were planted in April 2016 and were exposed to Low, Medium and High ozone treatments over three growing seasons (May to September 2016-2018).
Measurements were taken of light-saturated photosynthesis, stomatal conductance, chlorophyll index, number of flowering stems, leaf ground cover, and the dried weight of litter. All measurements were made by members of the project. The experiments were carried out in the UKCEH Bangor Air Pollution Facility. Work was funded by the UK Centre for Ecology & Hydrology under the Natural Environment Research Council (UK) grant/award NEC05574.

For L. hispidus a lower leaf cover was observed with elevated ozone, and there was an increase in litter with added nitrogen. For S. pratensis, elevated ozone reduced flowering and increased foliar damage. Increased litter and accelerated winter die-back with both ozone and nitrogen were also recorded for S. pratensis.
These effects have implications for inter- and intra-specific competition, seed establishment, nutrient cycling, as well as the provision of general pollinator resources and highlight the need for concerted action to reduce pre-cursor ozone emissions to go alongside habitat management efforts to protect biodiversity.

Publication date: 2020-11-12

Get the data

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

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

You must cite: Holder, A.J.; Hayes, F.; Sharps, K.; Harmens, H. (2020). Growth and physiological measurements of Leontodon hispidus and Succisa pratensis after ozone exposure and elevated nitrogen input from an ozone field release system, North Wales, 2016-2018. NERC Environmental Information Data Centre. https://doi.org/10.5285/382baaf2-7795-4aa8-a434-56c9e6bd1516

 

© UKCEH

Where/When

Study area
Temporal extent
2016-04-15    to    2018-09-15

Provenance & quality

The plants were planted directly into the ground in 1m separate square blocks, with the two species alternating in a Latin square design, within nine Free Air Ozone Enrichment (FAOE) rings (4m diameter). Plants were exposed to low, medium and high ozone treatments over three growing seasons (May to September 2016-2018, treatment means: 24, 40 and 57 parts per billion, respectively), with and without the addition of nitrogen (40 kg ha-1 yr-1) during the first year. Irrigation occurred naturally from precipitation, and no supplementary watering was required apart from that associated with the nitrogen addition.

Light-saturated photosynthesis and stomatal conductance was recorded on healthy leaves using a LI-COR 6400XT. The chlorophyll index was measured on healthy leaves using an Opti-Sciences CCM200 meter. Plants were oven-dried at 60 degrees Celsius to determine dry weight. Ground cover was determined from grids (containing 100 squares) overlain onto photographs of the plant blocks, with total leaf area and the proportion of damaged leaves assessed.

Data was recorded onto field sheets and transferred to Excel sheets and subsequently exported to comma separated value files for deposit into the EIDC.

Supplemental information

This dataset is referenced in:

Holder, A., Hayes, F., Sharps, K., & Harmens, H. (2020). Effects of tropospheric ozone and elevated nitrogen input on the temperate grassland forbs Leontodon hispidus and Succisa pratensis. Global Ecology and Conservation, 24, e01345.

Other useful information regarding this dataset:

Agathokleous et al. (2020) Ozone affects plant, insect, and soil microbial communities: A threat to terrestrial ecosystems and biodiversity. Science Advances 6, eabc1176.

Correspondence/contact details

Holder, A.J.
UK Centre for Ecology & Hydrology
Environment Centre Wales, Deiniol Road
Bangor
Gwynedd
LL57 2UW
UNITED KINGDOM
 enquiries@ceh.ac.uk

Authors

Holder, A.J.
UK Centre for Ecology & Hydrology
Hayes, F.
UK Centre for Ecology & Hydrology
Sharps, K.
UK Centre for Ecology & Hydrology
Harmens, H.
UK Centre for Ecology & Hydrology (Retired)

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk
Rights Holder
UK Centre for Ecology & Hydrology
 enquiries@ceh.ac.uk

Additional metadata

Topic categories
Biota , Climatology / Meteorology / Atmosphere
Keywords
Devil's bit scabious,  Leontodon hispidus O3,  ozone,  Plant growth,  rough hawkbit,  Succisa pratensis
INSPIRE Theme
Environmental Monitoring Facilities
Funding
Natural Environment Research Council Award: Natural Environment Research Council (UK) grant/award NEC05574
Spatial representation type
Tabular (text)
Spatial reference system
WGS 84
Last updated
25 June 2021 18:34