Roy, D.B. (2006) The Effects Of Climate And Habitat On Butterfly Populations. University of Southampton.

Hill, M.O., Preston, C.D. & Roy, D.B. (2004) PLANTATT - Attributes of British and Irish Plants - Spreadsheet.

Hill, M.O., Preston, C.D., Bosanquet, S.D.S. & Roy, D.B. (2007) BRYOATT - Attributes of British and Irish Mosses, Liverworts and Hornworts - Spreadsheet.

Botham, M.S., Brereton, T.M., Middlebrook, I., Cruickshanks, K.L. & Roy, D.B. (2008) United Kingdom Butterfly Monitoring Scheme Report For 2007. CEH, Wallingford.

J. Greatorex-Davies, N., Brereton, T.M., Roy, D.B. & Wigglesworth, T. (2007) United Kingdom Butterfly Monitoring Scheme Report For 2006. Centre for Ecology and Hydrology, Huntingdon.

J. Greatorex-Davies, N., Brereton, T.M., Roy, D.B. & Wigglesworth, T. (2006) United Kingdom Butterfly Monitoring Scheme Report For 2005. Centre for Ecology and Hydrology, Huntingdon.

Roy, H.E., Pocock, M.J.O., Preston, C.D., Roy, D.B., Savage, J. & Tweddle, J.C. (2012) Understanding Citizen Science And Environmental Monitoring: Final Report On Behalf Of Uk Environmental Observation Framework. NERC/Centre for Ecology & Hydrology, Wallingford.

Hill, M.O., Cooper, J.M., Hiscock, K., Marchant, J.H., Preston, C.D., Rehfisch, M.M., Roy, D.B. & Tyler-Walters, H. (2007) Surveillance Of Non-Native And Newly-Arrived Species: A Proposal For A Non-Native Species Portal For Britain. Centre for Ecology and Hydrology, Huntingdon.

Fox, R., Brereton, T.M., Asher, J., August, T.A., Botham, M.S., Bourn, Na. D., Cruickshanks, K.L., Bulman, C.R., Ellis, S., Harrower, C.A., Middlebrook, I., Noble, D.G., Powney, G.D., Randall, R.D., Warren, M.S. & Roy, D.B. (2015) The State Of The Uk’s Butterflies 2015. Butterfly Conservation and the Centre for Ecology & Hydrology, Wareham, Dorset.

Burns, F., Eaton, M.A., Gregory, R.D., N. Fulaij, A., August, T.A., Biggs, J., Bladwell, S., Brereton, T.M., Brooks, D.R., Clubbe, C., Dawson, J., Dunn, E., Edwards, B., Falk, S.J., Gent, T., Gibbons, D.W., Gurney, M., Haysom, K.A., Henshaw, S., Hodgetts, N.G., Isaac, N.J.B., McLaughlin, M., Musgrove, A.J., Noble, D.G., O’Mahony, E., Pacheco, M., Roy, D.B., Sears, J., Shardlow, M., Stringer, C., Taylor, A., Thompson, P., Walker, K.J., Walton, P., Willing, M.J., Wilson, J. & Wynde, R. (2013) State Of Nature Report. The State of Nature partnership.

Hill, M.O., Ames, S.L., Bacon, J., Botham, M.S., Lindsley-Leake, S., Marchant, J.H., Preston, C.D., Rehfisch, M.M., Roy, D.B., Roy, H.E., Tyler-Walters, H. & Wright, L. (2008) Non-Native Species Portal Feasibility Study. CEH, Huntingdon.

Sparks, T.H., Collinson, N., Crick, H., Croxton, P., Edwards, M., Humber, K., Jenkins, D., Johns, D., Last, F., Maberly, S., Marquiss, M., Pickup, J., Roy, D.B., Sims, D., Shaw, D., Turner, A., Watson, A., Woiwood, I. & Woodbridge, K. (2006) Natural Heritage Trends Of Scotland: Phenological Indicators Of Climate Change.

Roy, D.B., Brereton, T.M., Cruickshanks, K.L., J. Greatorex-Davies, N., Middlebrook, I., Rothery, P. & Warren, M.S. (2008) Developing A Uk-Wide Butterfly Monitoring Scheme: Integrating The Wider Countryside. Centre for Ecology and Hydrology and Butterfly Conservation.

Roy, D.B. (2008) Delivering Alien Invasive Species Inventories For Europe (Daisie). Final Report For The Framework Vi Strategic Targeted Research Project Sspi-Ct-2003-511202. Centre for Ecology and Hydrology, Huntingdon.

Hill, M.O., Arnold, H.R., Broad, G.R., Burton, V., James, T.J., McLean, I.F.G., Preston, C.D., Rowland, F. & Roy, D.B. (2005) Biological Records Centre: Report 1999-2004. JNCC.

Hill, M.O., Arnold, H.R., Broad, G.R., Brown, P.M.J., James, T.J., McLean, I.F.G., Preston, C.D., Rowland, F. & Roy, D.B. (2006) Biological Records Centre Annual Report 2005-2006. Joint Nature Conservation Committee, Peterborough.

Hill, M.O., Roy, D.B. & Preston, C.D. (2005) Appendix 11: Development Of Environmental Indices (Ellenberg-Style Scores) For British Bryophytes. Atmospheric Nitrogen Pollution Impacts On Biodiversity: Phase 1 - Model Development And Testing (Cr0289). Defra, London.

Dennis, E.B., Morgan, B.J.T., Brereton, T.M., Roy, D.B. & Fox, R. (2017) Using citizen science butterfly counts to predict species population trends. Conservation Biology, 31, 1350-1361.

Maes, D., Isaac, N.J.B., Harrower, C.A., Collen, B., van Strien, A.J. & Roy, D.B. (2015) The use of opportunistic data for IUCN Red List assessments. Biological Journal of the Linnean Society, 115, 690-706.

Pescott, O.L., Jitlal, M.S., Beckmann, B., Roy, D.B., Walker, K.J., Dore, A. & Smart, S.M. (2018) The use of National Plant Monitoring Scheme data for making inferences concerning air pollution impacts.

Dennis, E.B., Morgan, B.J.T., Roy, D.B. & Brereton, T.M. (2017) Urban indicators for UK butterflies. Ecological indicators, 76, 184-193.

Dennis, E.B., Morgan, B.J.T., Roy, D.B. & Brereton, T.M. (2016) Urban indicators for UK butterflies. Ecological Indicators.

Ovaskainen, O., Roy, D.B., Fox, R. & Anderson, B.J. (2016) Uncovering hidden spatial structure in species communities with spatially explicit joint species distribution models. Methods in Ecology and Evolution, 7, 428-436.

Beckmann, B., Purse, B.V., Roy, D.B., Roy, H.E., Sutton, P.G. & Thomas, C.D. (2015) Two species with an unusual combination of traits dominate responses of British grasshoppers and crickets to environmental change. PloS ONE, 10, e0130488.

Dennis, R.L.H., Dapporto, L., Sparks, T.H., Williams, S.R., J. 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.