Photosynthesis of Trifolium repens versus Lolium perenne after ozone exposure in solardomes
The dataset consists of ACi (net CO2 assimilation rate, A, versus calculated substomatal CO2 concentration, Ci) curve data from an ozone 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). ACi curves were carried out mid-way and at the end of the exposure period using a Portable Photosynthesis System, CIRAS (PP-Systems) to calculate the photosynthetic parameters Jmax (maximum rate of photosynthetic electron transport) and Vcmax (maximum rate of Rubisco carboxylase activity). 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. 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. Full details about this dataset can be found at https://doi.org/10.5285/f14b9056-ccc0-4887-812e-c004f613a138
dataset
https://data-package.ceh.ac.uk/data/f14b9056-ccc0-4887-812e-c004f613a138
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https://data-package.ceh.ac.uk/sd/f14b9056-ccc0-4887-812e-c004f613a138.zip
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description: Supporting information available to assist in re-use of this dataset.
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1418144571060
CEH:EIDC:
eng
biota
Atmospheric Conditions
publication
2008-06-01
creation
2012-10-29
creation
2006-01-01
vegetation
grassland
productivity
solar domes
solardome
-4.018
-4.016
53.239
53.237
2007-04-30
2007-10-31
publication
2014-12-18
creation
2010-01-01
notPlanned
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). After 6 weeks there was 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. ACi curves were carried out mid-way and at the end of the exposure period using a Portable Photosynthesis System, CIRAS (PP-Systems).
publication
2010-12-08
Comma-separated values (CSV)
© UK Centre for Ecology & Hydrology
If you reuse this data, you should cite: Hayes, F., Mills, G., Ashmore, M. (2014). Photosynthesis of Trifolium repens versus Lolium perenne after ozone exposure in solardomes. NERC Environmental Information Data Centre https://doi.org/10.5285/f14b9056-ccc0-4887-812e-c004f613a138
UK Centre for Ecology & Hydrology
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Centre for Ecology & Hydrology
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University of York
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NERC EDS Environmental Information Data Centre
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NERC Environmental Information Data Centre
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UK Centre for Ecology & Hydrology
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2022-05-20T10:41:41