extinction

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Walker, K.J., Preston, C.D. & Boon, C.R. (2009) Fifty years of change in an area of intensive agriculture: plant trait responses to habitat modification and conservation, Bedfordshire, England. Biodiversity and Conservation, 18, 3597-3613.
Dennis, R.L.H., Dapporto, L., Sparks, T.H., Williams, S.R., Greatorex-Davies, N., Asher, J. & Roy, D.B. (2010) Turnover and trends in butterfly communities on two British tidal islands: stochastic influences and deterministic factors. Journal of Biogeography, 37, 2291-2304.