Research and Publications
Similarities in butterfly emergence dates among populations suggest local adaptation to climate. Global Change Biology, 21, 3313-3322.
(2015) 
Increased fluctuations of butterfly populations towards the northern edges of species' ranges. Ecography, 17, 215-220.
(1994) Drought reduces breeding success of the butterfly Aglais urticae. Ecological Entomology, 22, 315-318.
(1997) Butterfly numbers and weather: predicting historical trends in abundance and the future effects of climate change. Journal of Animal Ecology, 70, 201-217.
(2001) Atlas Of Butterflies In Britain And Ireland. Viking, Harmondsworth.
(1984)