Research and Publications
The effects of habitat fragmentation on niche requirements of the marsh fritillary, Euphydryas aurinia, (Rottemburg, 1775) on calcareous grasslands in southern UK. Journal of Insect Conservation, 15, 269-277.
(2011) Economy is a better predictor of biological invasions in Europe than geography and climate. Proceedings of the National Academy of Sciences, 107, 12157-12162.
(2010) An Ecological Classification of British Butterflies: Ecological Attributes and Biotope Occupancy. Journal of Insect Conservation, 5, 145-161.
(2001) Dynamic Models for Longitudinal Butterfly Data. Journal of Agricultural Biological and Environmental Statistics, 21, 1-21.
(2016) Do urban areas act as foci for the spread of alien plant species? An assessment of temporal trends in the UK. Diversity and Distributions, 15, 338-345.
(2009) The distributions of a wide range of taxonomic groups are expanding polewards. Global Change Biology, 12, 450-455.
(2006) Direct and indirect effects of climate and habitat factors on butterfly diversity. Ecology, 88, 605-611.
(2007) The development of butterfly indicators in the United Kingdom and assessments in 2010. Journal of Insect Conservation, 15, 139-151.
(2011) Developing and launching a wider countryside butterfly survey across the United Kingdom. Journal of Insect Conservation, 15, 279-290.
(2011) Developing and enhancing biodiversity monitoring programmes: a collaborative assessment of priorities. Journal of Applied Ecology, 52, 686–695.
(2015) 
(2016)
Developing a biodiversity-based indicator for large-scale environmental assessment: a case study of proposed shale gas extraction sites in Britain. Journal of Applied Ecology, 54, 872-882.
(2017) Declines in forage availability for bumblebees at a national scale. Biological Conservation, 132, 481-489.
(2006) (2005)
Climate change, climatic variation and extreme biological responses. Phil. Trans. R. Soc. B, 372, 20160144.
(2017) The changing status of the Chalkhill Blue butterfly Polyommatus coridon in the UK: the impacts of conservation policies and environmental factors. Journal of Insect Conservation, 12, 629-638.
(2008) Changes in the composition of British butterfly assemblages over two decades. Global Change Biology, 14, 1464-1474.
(2008) Changes in habitat specificity of species at their climatic range boundaries. Ecology Letters, 12, 1091-1102.
(2009) Can trait-based analyses of changes in species distribution be transferred to new geographic areas?. Global Ecology and Biogeography, 23, 1009-1018.
(2014) Butterfly numbers and weather: predicting historical trends in abundance and the future effects of climate change. Journal of Animal Ecology, 70, 201-217.
(2001) (2011)
Beyond biological control: non-pest insects and their pathogens in a changing world. Insect Conservation and Diversity, 2, 65-72.
(2009) Assisted colonization in a changing climate: a test-study using two U.K. butterflies. Conservation Letters, 2, 46-52.
(2009) (2010)
Application of generalized additive models to butterfly transect count data. Journal of Applied Statistics, 28, 897-909.
(2001)