Menzel, A., Sparks, T.H., Estrella, N. & Roy, D.B. (2006) Altered geographic and temporal variability in phenology in response to climate change. Global Ecology and Biogeography, 15, 498-504.

Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L. & Majerus, M.E.N. (2008) Harmonia axyridis in Great Britain: analysis of the spread and distribution of a non-native coccinellid. From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species From Biological Control to Invasion: the Ladybird Harmonia axyridis as a Model Species. (eds H.E. Roy), & Wajnberg, E.), pp. 55-67. Springer Netherlands.

Fox, R., Asher, J., Brereton, T.M., Roy, D.B. & Warren, M.S. (2006) The State Of Butterflies In Britain And Ireland. Pisces, Newbury.

Hulme, P.E. & Roy, D.B. (2009) Preface. In: Daisie: Non-Native Invertebrates In Europe (Ed. A. Roques). Pensoft, Sofia.

Wilson, R. & Roy, D.B. (2008) Population Structure And Dynamics (Including Metapopulations). In: Ecology Of Butterflies In Europe. Cambridge University Press, Cambridge.

Hill, M.O., Preston, C.D. & Roy, D.B. (2004) Plantatt - Attributes Of British And Irish Plants: Status, Size, Life History, Geography And Habitats. Centre for Ecology and Hydrology, Huntingdon.

Hill, M.O., Preston, C.D. & Roy, D.B. (2004) Plantatt - Attributes Of British And Irish Plants: Status, Size, Life History, Geography And Habitats. Centre for Ecology and Hydrology, Huntingdon.

Hulme, P.E., Roy, D.B., Cunha, T. & Larsson, T.B. (2008) A Pan-European Inventory Of Alien Species: Rationale, Implementation And Implications For Managing Biological Invasions. In The Handbook Of Alien Species In Europe, Hulme P., Netwig, W., Pysek, P. & Vilà, M. (Eds.). Springer, Berlin.

Roy, H.E. & Roy, D.B. (2008) Harmonia Axyridis. In: Handbook Of Alien Species In Europe. (Ed.: Daisie). Springer series in Invasion Ecology.

Hill, M.O., Mountford, J.O., Roy, D.B. & Bunce, R.G.H. (1999) Ellenberg's Indicator Values For British Plants. Ecofact Volume 2 Technical Annex. Institute of Terrestrial Ecology.

Roy, D.B., Rothery, P. & Brereton, T.M. (2005) The Design Of A Systematic Survey Scheme To Monitor Butterflies In The United Kingom. In: Studies On The Ecology And Conservation Of Butterflies In Europe, Vol 1. General Concepts And Case Studies, Pp. 102-105. Kuhn, E., Fieldmann, R. Thomas, J.a. And Se. Pensoft, Sofia.

Hill, M.O., Preston, C.D., Bosanquet, S.D.S. & Roy, D.B. (2007) Bryoatt - Attributes Of British And Irish Mosses, Liverworts And Hornworts With Information On Native Status, Size, Life Form, Life History, Geography And Habitat. Centre for Ecology and Hydrology, Huntingdon.

Hill, M.O., Preston, C.D., Bosanquet, S.D.S. & Roy, D.B. (2007) Bryoatt: Attributes Of British And Irish Mosses, Liverworts And Hornworts. Centre for Ecology & Hydrology, Huntingdon.