Professor Barry Lomax
Chair in Plant Palaeobiology
Barry's research is focused on quantifying how the Earth's climate has changed over geologic time, how these changes have influenced the Earth's terrestrial biosphere and how in turn the Earth's terrestrial biosphere has influenced climate. Particular interests include:
• Palaeopolyploidy and plant genome size over geological time.
• Plant responses to CO2
• Sporopollenin chemistry as a palaeoclimate proxy and taxonomic tool
My teaching interests reflect my research skills and interests, which link together Plant and Earth Sciences .
I currently teach on the following modules:
Earth, Atmosphere and Oceans (Year 1)
The Green Planet (Year 2)
Palaeobiology (Year 3)
Arctic Ecology Field Course (Year 3)
I am interested in the quantifying how the Earth's climate has changed over geologic time, how these changes have influenced the Earth's terrestrial biosphere and how in turn the Earth's terrestrial… read more
SMITH KL, LAKE JA, STEVEN MD and LOMAX BH, 2017. Effects of elevated soil CO2concentration on growth and competitionin a grass-clover mix International Journal of Greenhouse Gas Control. 340-348 JARDINE PE, ABERNETHY FAJ, LOMAX BH, GOSLING WD and FRASER WT, 2017. Shedding light on sporopollenin chemistry, with reference to UV reconstructions Review of Palaeobotany and Palynology. 238, 1-6
LAKE JA, STEVEN MD and SMITH KL, 2017. Plant responses to elevated CO 2 levels in soils: Distinct CO 2 and O 2-depletion effects International Journal of Greenhouse Gas Control. 64, 333-339
I am interested in the quantifying how the Earth's climate has changed over geologic time, how these changes have influenced the Earth's terrestrial biosphere and how in turn the Earth's terrestrial biosphere has influenced climate. I am achieving this through combining palaeobotanical studies with experimental investigations into how plants adapt to environmental change. This is leading to the development of mechanist proxies to reconstruct palaeoclimates and understand changes in plant genome size over the geological time.
Palaeopolyploidy and angiosperm radiation and diversification: Evidence provided by genome sequences suggests that angiosperms have over their evolutionary history undergone several discrete periods of polyploidy (genome doubling). This in turn has been used to suggest palaeopolyploidy was a key driver in allowing the angiosperms to rapidly diversify and dominate. I'm using the relationship between plant epidermal cell anatomy and genome size described in extant plant to directly test this assertion via the analysis of fossil plant epidermal cell anatomy.
Plant responses to CO2 : Reconstructing palaeo CO2 concentration using the well characterized inverse relationship between stomatal frequency and atmospheric CO2 using both fossil and living plants I'm using this technique to assess if the angiosperms radiation and diversification event was facilitated by a decline in atmospheric CO2. Recently my plant CO2 research interests have diversified to include plant responses to CO2 leaks from carbon capture and storage infrastructure.
Sporopollenin chemistry: My current and previous research has shown that the chemical composition of sporopollenin the biomacromolecule that makes up the outer wall of pollen grains and spores is regulated by the environment. Exposure to elevated UV-B stimulates the production of plant sun screen compounds which we can quantify. We are using this relationship to develop a wide variety of mechanistic proxies to investigate climate and environmental change over geological time.
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