Dr Alexa Varah

Placeholder image for Dr Alexa Varah

Postdoctoral Researcher

Department: Life Sciences
Division: LS Vertebrates Division

Summary

I am an ecologist working on the environmental impacts of agriculture. I use fieldwork to understand how agroforestry systems affect yield and environmental outcomes like biodiversity, pollination and carbon stocks. I use models to estimate economic and environmental outcomes of different farm management strategies in UK cereal production. Environmental aspects assessed are biodiversity, nitrate leaching and carbon emissions. It is currently difficult to estimate multiple outcomes simultaneously; these models will allow the provision of management recommendations together with an analysis of their agronomic, economic and environmental consequences. I'm currently using the models in the context of land-use change associated with herbicide resistance and its management.

Before moving into research I was a science teacher in UK secondary schools.

Qualifications

Degrees

BSc Biology (2:1), University of Exeter, Exeter, 1993 - 2021

PhD, University of Reading, UK, 2011 - 2015

MSc Conservation & Biodiversity (Distinction), University of Exeter, Exeter, 2010 - 2011

PCGE (Distinction), University of Oxford, Oxford, 2001 - 2002

Employment history

Academic

Post-doctoral researcher, Zoological Society of London, Institute of Zoology, United Kingdom, 2016 - 2020

Publications

Varah A, Jones H, Smith J, Potts SG (2020) Temperate agroforestry systems provide greater pollination service than monoculture. Agriculture, Ecosystems & Environment, 301 : 107031 - 107031. doi: 10.1016/j.agee.2020.107031

Varah A, Ahodo K, Coutts SR, Hicks HL, Comont D, Crook L, Hull R, Neve P, Childs DZ, Freckleton RP, Norris K (2020) The costs of human-induced evolution in an agricultural system. Nature Sustainability, 3 (1) : 63 - 71. doi: 10.1038/s41893-019-0450-8

Varah A, Jones H, Smith J, Potts SG (2013) Enhanced biodiversity and pollination in UK agroforestry systems. Journal of the Science of Food and Agriculture, 93 (9) : 2073 - 2075. doi: 10.1002/jsfa.6148

Introduction

Summary

I am an ecologist working on the environmental impacts of agriculture. I use fieldwork to understand how agroforestry systems affect yield and environmental outcomes like biodiversity, pollination and carbon stocks. I use models to estimate economic and environmental outcomes of different farm management strategies in UK cereal production. Environmental aspects assessed are biodiversity, nitrate leaching and carbon emissions. It is currently difficult to estimate multiple outcomes simultaneously; these models will allow the provision of management recommendations together with an analysis of their agronomic, economic and environmental consequences. I'm currently using the models in the context of land-use change associated with herbicide resistance and its management.

Before moving into research I was a science teacher in UK secondary schools.

Qualifications

Degrees

BSc Biology (2:1), University of Exeter, Exeter, 1993 - 2021

PhD, University of Reading, UK, 2011 - 2015

MSc Conservation & Biodiversity (Distinction), University of Exeter, Exeter, 2010 - 2011

PCGE (Distinction), University of Oxford, Oxford, 2001 - 2002

Employment history

Academic

Post-doctoral researcher, Zoological Society of London, Institute of Zoology, United Kingdom, 2016 - 2020

Publications

Publications

Varah A, Jones H, Smith J, Potts SG (2020) Temperate agroforestry systems provide greater pollination service than monoculture. Agriculture, Ecosystems & Environment, 301 : 107031 - 107031. doi: 10.1016/j.agee.2020.107031

Varah A, Ahodo K, Coutts SR, Hicks HL, Comont D, Crook L, Hull R, Neve P, Childs DZ, Freckleton RP, Norris K (2020) The costs of human-induced evolution in an agricultural system. Nature Sustainability, 3 (1) : 63 - 71. doi: 10.1038/s41893-019-0450-8

Varah A, Jones H, Smith J, Potts SG (2013) Enhanced biodiversity and pollination in UK agroforestry systems. Journal of the Science of Food and Agriculture, 93 (9) : 2073 - 2075. doi: 10.1002/jsfa.6148