Below are past and current projects of which I am the principal investigator. You can see projects that I am a co-investigator on in my full CV.
Developing a trait-based framework for predicting soil microbial community response to extreme events
NERC funded project – 2018-2021
Collaborators: Prof Nico Eisenhauer, Leipzig University; Dr Fernando Maestre, Universidad Rey Juan Carlos; Prof Andy Hector, The University of Oxford; Dr Carly Stevens, Lancaster University; Dr John Davison, University of Tartu; Dr Konstantin Gongalsky, A.N.Severtsov Institute of Ecology and Evolution; Dr Paul Kardol, Swedish University of Agricultural Sciences; Dr Maria Tsiafouli, Aristotle University of Thessaloniki; Prof Oddur Vilhelmsson, University of Akureyri; Dr Wolfgang Wanek, University of Vienna
In this project, we will investigate how bacterial and fungal populations that live in the soil are affected by extreme weather events, and we aim to identify the traits that are responsible for this. For example, some groups of bacteria can form spores and thus survive a wide range of stresses, but there might be many other traits that can allow bacteria and fungi to cope with extreme weather events. We will use a unique experiment in which we subject soils from different climates across Europe not just to drought and flooding, but also to heatwave and freezing, and we will combine this with state-of-the-art DNA sequencing and bioinformatics to quantify bacterial and fungal response and to infer the traits responsible for this. In addition, we will measure how the processes that these organisms perform change with these extreme weather events. This work will result in fundamental knowledge on soil bacterial and fungal response to extreme weather events, and in a framework that allows us to predict how soils and their functioning will respond to extreme weather events. This knowledge is of the highest importance for adapting the Earth’s ecosystems to climate change.
I will be recruiting for a PDRA and a Research Technician within this project for a 1st of February 2018 start date.
The root to stability – the role of plant roots in ecosystem response to climate change
BBSRC David Phillips Fellowship – 2015-2020
Collaborator: Prof Roy Goodacre, University of Manchester
This project aims to investigate how plant roots and their exudates affect the response of ecosystems and their functioning to drought and warming. It will focus on grasslands, which cover a large part of the world, and are crucial for biodiversity and carbon and nitrogen storage. Because so little is known about how and why plants differ in their root exudates, we will first look at how different root systems affect the composition of root exudates, and how roots and root exudates themselves respond to drought and warming. Then, in a combination of laboratory and field experiments, we want to find out how roots and their exudates affect the response of soil bacteria and fungi to drought and warming, and how they might affect longer-term ecosystem response to drought and warming. The results of this work might be used to increase the resistance of ecosystems to climate change, for example through sowing specific plant species, or by informing plant breeding programmes.
Ecosystem stability along a primary succession gradient
Royal Society International Exchanges Grant – 2015-2017
Co-investigator: Wolfgang Wanek, University of Vienna
This project tests the hypothesis that ecosystem response to climate change will change along a primary succession gradient in a glacier foreland, and identify the relative role of soil and plants in modifying this response. Specifically, we will test whether the resistance of plant performance and soil processes to warming and drought will increase with ecosystem age. We hypothesise that with increasing ecosystem age both plant performance (photosynthesis and respiration rates, and aboveground and belowground biomass) and soil processes of C and N cycling will become more resistant to both drought and warming. We use the well-characterised Odenwinkelkees glacier foreland chronosequence to test these hypotheses. This project will provide insight into fundamental controls of ecosystem response to climate change, and will quantify the relative role of soil and plants in this response.
Primary succession and ecosystem nitrogen retention in glacier forelands
British Ecological Society Early Career Project Grant – 2012-2016
Collaborators: Prof Richard Bardgett, University of Manchester; Dr Michael Bahn, University of Innsbruck; Dr Wolfgang Wanek, University of Vienna
Although the productivity of most terrestrial ecosystems is limited by the availability of nitrogen (N), very little is known about the factors that regulate ecosystem N retention and loss. During primary succession, soil microbial communities become more fungal-dominated and plant communities more N-conservative. My recent research has shown that soils with a fungal-dominated microbial community, as opposed to one dominated by bacteria, retain N better and, as a result, have lower N leaching losses. In this project, I hypothesise that ecosystem N retention will increase as primary succession proceeds and, specifically, that fungal-dominated soil microbial communities of late-successional seres will immobilise, and thus retain, more N than bacterial-dominated microbial communities of early-successional stages. To address this hypothesis, I used a chronosequence approach on glacier forelands, which are commonly used for studies on primary succession, to asses how ecosystem N retention changes as ecosystems develop, and how this relates to shifts in plant and microbial community structure. I collected soil from three well-described Alpine glacier foreland to test my hypothesis in a mechanistic laboratory experiment: the Rotmoos and Ödenwinkelkees glaciers in Austria, and the Damma glacier in Switzerland.