Calcareous grassland

Botham, M.S., Ash, D., Aspey, N., Bourn, N. a. D., Bulman, C.R., Roy, D.B., Swain, J., Zannese, A. & Pywell, R.F. (2011) 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.
Botham, M.S., Fernandez-Ploquin, E., Brereton, T.M., Harrower, C.A., Roy, D.B. & Heard, M.S. (2015) Lepidoptera communities across an agricultural gradient: how important are habitat area and habitat diversity in supporting high diversity?. Journal of Insect Conservation, 19, 403-420.