Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L., Majerus, M.E.N., Roy, H.E. & Wajnberg, E. (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 pp. 55–67. Springer Netherlands.
Roy Helen E.
First name
Helen
Middle name
E.
Last name
Roy
Hill, M.O., Bacon, J., Beckmann, B., Bishop, J.D.D., Marchant, J.H., Musgrove, A.J., Rathod, B., Roy, H.E. & Sewell, J. (2010) GB Non-Native Species Information Portal: Interim Report for the Period February 2009 to March 2010. Defra.
Pergl, J., Pysek, P., Bacher, S., Essl, F., Genovesi, P., Harrower, C.A., Hulme, P.E., Jeschke, J.M., Kenis, M., Kuhn, I., Perglova, I., Rabitsch, W., Roques, A., Roy, D.B., Roy, H.E., Vilà, M., Winter, M. & Nentwig, W. (2017) Troubling travellers: are ecologically harmful alien species associated with particular introduction pathways? Neobiota, 32, 1–20.
Roy, H.E., Brown, P.M.J., Frost, R. & Poland, R. (2011) Ladybirds (Coccinellidae) of Britain and Ireland. Field Studies Council, Shrewsbury.
Brown, P.M.J., Roy, H.E., Rothery, P., Roy, D.B., Ware, R.L., Majerus, M.E.N., Roy, H.E. & Wajnberg, E. (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 pp. 55–67. Springer Netherlands.
Parrott, D., Roy, S., Baker, R., Cannon, R., Eyre, D., Hill, M.O., Wagner, M., Preston, C.D., Roy, H.E. & Beckmann, B. (2009) Horizon scanning for new invasive non-native animal species in England.
Saul, W.C., Roy, H.E., Booy, O., Carnevali, L., Chen, H.J., Genovesi, P., Harrower, C.A., Hulme, P.E., Pagad, S., Pergl, J. & Jeschke, J.M. (2017) Assessing patterns in introduction pathways of alien species by linking major invasion data bases. Journal of Applied Ecology, 54, 657–669.
Roy, H.E. (2010) Coccinellids in a Changing World. In: Ecology of Aphidophaga (eds.: P. Kindlmann). Springer Academic Publishers, Netherlands.
Roy, H.E., Brown, P.M.J., Rothery, P., Ware, R.L. & Majerus, M.E.N. (2007) Interactions between the fungal pathogen Beauveria bassiana and three species of coccinellid: Harmonia axyridis, Coccinella septempunctata and Adalia bipunctata. BioControl, 53, 265–276.
Parrott, D., Roy, S., Baker, R., Cannon, R., Eyre, D., Hill, M.O., Wagner, M., Preston, C.D., Roy, H.E., Beckmann, B., Copp, G., Ellis, J., Laing, I., Britton, J., Gozlan, R. & Mumford, J. (2009) Horizon Scanning for New Invasive Non-Native Species in England. Report to Natural England (Natural England Contract No. SAE03-02-189). Central Science Laboratory, York.