Professional summary

Research Interests

  • Ecology of non-native species
  • Effects of environmental change on insect populations
  • Community interactions, particularly ladybirds and their natural enemies
  • Role of species' attributes in determining distribution patterns
  • Science communication and citizen science

My research focuses on the effects of environmental change on insect populations and communities. I am particularly interested in the dynamics of invasive non-native species and their effects on biodiversity and ecosystems.  I am a co-chair for the IPBES Thematic Assessment on Invasive Alien Species and their control. I also chair the COST Action network ALIEN CSI (Citizen Science Investigate) which aims to increase understanding of alien species through citizen science and involves more than 30 countries. I have the pleasure of leading a number of projects for the European Commission on non-native species - particularly in enhancing communication and understanding but also prioritising species for risk assessment.  I lead a project to produce a comprehensive information portal on non-native species in Great Britain which also includes annual reports on status and trends of invasive non-native species and the development of an alert system for people to report sightings of concern (GB Non-Native Species Information Portal). Over the last few years I have had the privilege of working with the UK Overseas Territories to predict and prioritise invasive non-native species.

Citizen science provides opportunities for engaging people actively in science and over the last ten years I have led several major citizen science initiatives involving tens of thousands of people (including UK Ladybird Survey, BBC Breathing Places Parasite Survey and EDF Energy Big Bumblebee Discovery). I have been the volunteer scheme organiser for the UK Ladybird Survey for many years and am using the large-scale and long-term Coccinellidae datasets (distribution and abundance) to understand and predict the effects of the arrival of the non-native harlequin ladybird on other ladybirds.

My research has been selected for the 2009 Royal Society Summer Science Exhibition, Moscow Science Festival in 2010, BBC Gardeners' World Live in 2011, 2012 and 2013, the Edinburgh Science Festival in 2015, the British Science Festival in 2014 and 2015, New Scientist Live in 2018. I was delighted to give the "12 months in ecology" plenary lecture at the British Ecological Society Annual Meeting in 2019.

I am a visiting Professor in the School of Biological Sciences, University of Reading.

Brief CV


Community ecology, invasion biology, entomology, biological recording, science communication

Career summary:

2019 -               Ecologist (Individual Merit (IMP) Scientist and Group Leader, NERC Centre for Ecology & Hydrology)

2012 - 2019      Ecologist (Band 4) and Group Leader, NERC Centre for Ecology & Hydrology

2009 - 2012      Ecologist (Band 5) and Group Leader, NERC Centre for Ecology & Hydrology

2007 - 2009      Ecologist (Band 6), NERC Centre for Ecology & Hydrology

2007 - 2008      Reader in Ecology, Anglia Ruskin University

2006 - 2007      Director of Research Students, Anglia Ruskin University

2002 - 2006      Senior Lecturer, Anglia Ruskin University

1997 - 2002      Lecturer, Anglia Polytechnic University

1994 - 1997      PhD Student, Institute of Arable Crop Research – Rothamsted and University of Nottingham


September 2013 Course teacher for Tropical Biological Association, Segera, Kenya

June 2011 Course teacher for Tropical Biological Association, Kibale, Uganda

2013- Visiting lecturer on MSc Conservation (University of Oxford)

2009- Visiting lecturer on MSc Conservation and Wildlife Management (University of Reading)

2010- Visiting lecturer on MSc Environmental Science (University of Warwick)

2009 Visiting lecturer on Community Ecology course (University of Oxford)

1997-2008 Lecturer on various ecology, statistics and microbial courses (Anglia Ruskin University)

Postgraduate supervision:

2017 - Co-supervisor for PhD: Citizen science and slugs in gardens (Imogen Cavadino, Newcastle University)

2014 -  Co-supervisor for PhD: Harmonia axyridis impacts on rare species (Rachel Farrow, Anglia Ruskin University)

2014 - 2018 Co-supervisor for PhD: eDNA - invasive alien species (Rosie Blackman, Hull University)

2014 - 2018 Co-supervisor for PhD: Functional responses of invasive alien species (Will Fincham, Leeds University)

2014 - 2018 Co-supervisor for PhD: Ladybirds and their parasites (Katie Murray, Stirling University)

2013 - 2019 Co-supervisor for part-time PhD: Invasive Alien Species - impacts and pathways (Olaf Booy, Newcastle University)

2009-2013 Lead supervisor for PhD: Modelling the impacts of Harmonia axyridis on native insects (Richard Comont, Oxford University)

2009 - 2017 Co-supervisor for part-time PhD: Role of climate and habitat in the range expansion of Orthoptera (Björn Beckmann, York University)

2007 - 2011 Co-supervisor for PhD: Fenland restoration and invertebrate assemblages (Blaise Martay, Anglia Ruskin University)

2007 – 2011 Co-supervisor for PhD: Intraguild interactions between Harmonia axyridis and other aphidophages (Patricia Wells, Cambridge University)

2005 - 2010 Lead supervisor for PhD: Impacts of Harmonia axyridis on native ladybirds (Peter Brown, Anglia Ruskin University)

2004 - 2007 Lead supervisor for PhD: Overwintering interactions between Coccinella septempunctata and Beauveria bassiana (Anglia Ruskin University, Emma Ormond)


2013 ZSL Silver Medal for “Outstanding contributions to the understanding and appreciation of insect research and conservation”; 2015 President of the Biological Sections, Royal Society of Biology; 2015 BBC Wildlife Magazine “Wildlife Power List”; 2017 Honorary Membership of BNA; 2017 Honorary Membership of the NBN; 2018 MBE in recognition of contributions to biodiversity research, science communication and citizen science; 2018 Honorary Fellowship of the Royal Entomological Society.

Peer-reviewed publications (2012 onwards only):

Roy, H.E., Peyton, J., Booy, O. (2020) Guiding principles for utilising social influence within expert-elicitation to inform conservation decision-making. Global Change Biology

Lucy, F., Davis, E., Anderson, R., Booy, O., Bradley, K., Britton, R., Byrne, C., Caffrey, J., Coughlan, N.E., Crane, K., Cuthbert, R.N., Dick, J.T.A., Dickey, J.W.E., Fisher, J., Gallagher, C., Harrison, S., Jebb, M., Johnson, M., Lawton, C., Lyons, D., Mackie, T., Maggs, C., Marnell, F., McLoughlin, T., Minchin, D., Monaghan, O., Montgomery, I., Moore, N., Morrison, L., Muir, R., Nelson, B., Niven, A., O’Flynn, C., Osborne, B., Ramsay, R., Reid, N., Roy, H.E., Sheehan, R., Stewart, D., Sullivan, M., Tierney, P., Treacey, P., Tricarico, E., Trodd, W. (in press) Horizon scan of invasive alien species for the island of Ireland. 

Martinou, A.F., Schäfer, S.M., Bueno, M., R., Angelidou, I., Erguler, K., Fawcett, J., Ferraguti, M., Foussadier, R., Gkotsi, T., Martinos, C., Schaefer, M., Schaffner, F., Peyton, J., Purse, B.V., Wright, D.J., Roy, H.E. (in press) Developing a Code of Practice for mosquito management in European wetlands. Journal of Applied Ecology

Terry, C., Roy, H.E., August, T. (2019) Thinking like a naturalist: enhancing computer vision of citizen science images by harnessing contextual data. Methods in Ecology & Evolution doi:10.1111/2041‐210X.13335

Groom, Q., Strubbe, D., Adriaens, T., David, A.J.S., Desmet, P., Oldoni, D., Reyserhove, L., Roy, H.E., Vanderhoeven, S. (2019) Empowering citizens to inform decision-making as a way forward to support invasive alien species policy. Citizen Science: Theory and Practice 4:  1–11.

Hughes, K.A., Pescott, O.L., Peyton, J.M., Adriaens, T., Cottier-Cook, E.J., Key, G., Rabitsch, W., Tricarico, E., Barnes, D.K.A., Baxter, N., Belchier, M., Blake, D., Convey, P., Dawson, W., Frohlich, D., Gardiner, L., González-Moreno, P., James, R., Malumphy, C., Martin, S., Martinou. A.F., Minchin, D., Monaco, A., Moore, N., Morley, S.A., Ross, K., Shanklin, J., Turvey, K.M., Vaughan, D., Vaux, A.G.C., Werenkraut, V., Winfield, I.J., Roy, H.E. (2020) Invasive non-native species likely to threaten biodiversity and ecosystems in the Antarctic Peninsula region. Global Change Biology

Morisette, J.T., Reaser, J.K., Cook, G.L., Irvine, K.M., Roy, H.E. (2019) Right place. Right time. Right tool: guidance for using target analysis to increase the likelihood of invasive species detection. Biological Invasions

Outhwaite, C., Powney, G., August, T., Chandler, R., Rorke, S.L., Pescott, O.L., Harvey, M., Roy, H.E., Fox, R., Roy, D.B., Alexander, K., Ball, S., Bantock, T., Barber, T., Beckmann, B., Cook, T., Flanagan, J., Fowles, A., Hammond, P., Harvey, P., Hepper, D., Hubble, D., Kramer, J., Lee, P., MacAdam, C., Morris, R., Norris, A., Palmer, S., Plant, C., Simkin, J., Stubbs, A., Sutton, P., Telfer, M., Wallace, I., Isaac, N.J.(2019) Annual estimates of occupancy for bryophytes, lichens and invertebrates in the UK, 1970–2015. Nature Scientific Data 6: 259

Fincham, W.N., Dunn, A.M., Brown, L.E., Hesketh, H. and Roy, H.E. (2019) Invasion success of a widespread invasive predator may be explained by a high predatory efficacy but may be influenced by pathogen infection. Biological Invasions 21: 3345-3560.

Stoett, P., Roy, H. E., Pauchard, A. (2019). Invasive alien species and planetary and global health policy. The Lancet Planetary Health 3(10): e400-e401.

O'Connor, R.S., Kunin, W.E., Garratt, M.P., Potts, S.G., Roy, H.E., Andrews, C., Jones, C.M., Peyton, J.M., Savage, J., Harvey, M.C., Morris, R.K. (2019) Monitoring insect pollinators and flower visitation: the effectiveness and feasibility of different survey methods. Methods in Ecology and Evolution 10: 2129-2140

Peyton, J., Martinou, A.F., Pescott, O.L., Demetriou, M., Adriaens, T., Arianoutsou, M., Bazos, I., Bean, C.W., Booy, O., Botham, M., Britton, J.R., Lobon Cervia, J., Charilaou, P., Chartosia, N., Dean, H.J., Delipetrou, P., Dimitriou, A.C., Dörflinger, G., Fawcett, J., Fyttis, G., Galanidis, A., Galil, B., Hadjikyriakou, T., Hadjistylli, M., Ieronymidou, C., Jimenez, C., Karachle, P., Kassinis, N., Kerametsidis, G., Kirschel, A.N.G., Kleitou, P., Kleitou, D., Manolaki, P., Michailidis, N., Mountford, J.O. Charis Nikolaou, Papatheodoulou, A., Payiatas, G., Ribeiro, F., Rorke, S.L., Samuel, Y., Savvides, P., Schafer, S.M., Serhan Tarkan, A., Silva-Rocha, I., Top, N., Tricarico, E., Turvey, K., Tziortzis, I., Tzirkalli, E., Verreycken, H., Winfield, I.J., Zenetos, A., Roy, H.E. (2019) Horizon scanning for invasive alien species with the potential to threaten biodiversity and human health on a Mediterranean island. Biological Invasions 21: 2107-2125

Powney, G., Carvell, C., Edwards, M., Morris, R., Roy, H.E., Woodcock, B.A., Isaac, N.J.B. (2019) Widespread losses of pollinating insects in Britain. Nature Communications 10: 1018

González-Moreno, P., Lazzaro, L., Vilà, M., Preda, C., Adriaens, T., Bacher, S., Brundu, G., Copp, G.H., Essl, F., García-Berthou, E., Katsanevakis, S., Moen, T.L., Lucy, F.E., Nentwig, W., Roy, H.E., Srėbalienė, G., Talgø, V., Vanderhoeven, S., Andjelković, A., Arbačiauskas, K., Auger-Rozenberg, M-A., Bae ,M-J., Bariche, M., Boets, P., Boieiro, M., Borges, P.A., Canning-Clode, J., Cardigos, F., Chartosia, N., Cottier-Cook, E.J., Crocetta, F., D’hondt, B., Foggi, B., Follak, S., Gallardo, B., Gammelmo, Ø., Giakoumi, S., Giuliani, C., Fried, G., Jelaska, L.S., Jeschke, J.M., Jover, M., Juárez-Escario, A., Kalogirou. S., Kočić, A., Kytinou, E., Laverty, C., Lozano, V., Maceda-Veiga, A., Marchante, E., Marchante, H., Martinou, A.F., Meyer, S., Minchin, D., Montero-Castaño, A., Morais, M.C., Morales-Rodriguez, C., Muhthassim, N., Nagy, Z.A., Ogris, N., Onen, H., Pergl, J., Puntila, R., Rabitsch, W., Ramburn, T.T., Rego, C., Reichenbach, F., Romeralo, C., Saul, W-C., Schrader, G., Sheehan, R., Simonović, P., Skolka, M., Soares, A.O., Sundheim, L., Tarkan, A.S., Tomov, R., Tricarico, E., Tsiamis, K., Uludağ, A., van Valkenburg, J., Verreycken, H., Vettraino, A.M., Vilar, L., Wiig, Ø., Witzell, J., Zanetta, A., Kenis, M. (2019) Consistency of impact assessment protocols for non-native species. Neobiota 44: 1-25

Chapman, D., Pescott, O.L., Roy, H.E., Tanner, R. (2019) Improving species distribution models for invasive non-native species with biologically informed pseudo-absence selection. Journal of Biogeography 46: 1029-1040

Roy, H.E., Bacher, S., Essl, F., Adriaens, T., Aldridge, D.C., Bishop, J.D.D, Blackburn, T.M., Branquart, E., Brodie, J., Carboneras, C., Cottier-Cook, E.J., Copp, G.H., Dean, H.J., Eilenberg, J, Gallardo, B., Garcia, M., García-Berthou, E., Genovesi, P., Hulme, P.E., Kenis, M., Kerckhof, F., Kettunen, M., Minchin, D., Nentwig, W., Nieto, A., Pergl, J., Pescott, O.L., Peyton, J.M., Preda, C., Rabitsch, W., Roques, A., Rorke, S.L., Scalera, R., Schindler, S., Schönrogge, K., Sewell, J., Solarz, W., Stewart, A.J.A, Tricarico, E., Vanderhoeven, S., van der Velde, G., Vilà, M., Wood, C.A., Zenetos, A. (2019) Developing a list of invasive alien species likely to threaten biodiversity and ecosystems in the European Union. Global Change Biology 25: 1032-1048

Pocock, M.J., Chandler, M., Bonney, R., Thornhill, I., Albin, A., August, T., Bachman, S., Brown, P.M., Cunha, D.G.F. & Grez, A., Jackson, C., Peters, M., Rabarijaon, N.R., Roy, H.E., Zaviezo, T., Danielsen, F. (2018) A vision for global biodiversity monitoring with citizen science. Advances in Ecological Research 59: 169-223

Vilà, M., Gallardo, B., Preda, C., García-Berthou, E., Essl, F., Kenis, M., Roy, H.E. and González-Moreno, P. (2018) A review of impact assessment protocols of non-native plants. Biological Invasions 21: 1-15.

Honek, A., Martinkova, Z., Roy, H.E., Dixon, A.F.G., Skuhrovec, J., Pekár, S., Brabec, M. (2018). Differences in the phenology of Harmonia axyridis (Coleoptera: Coccinellidae) and native coccinellids in Central Europe. Environmental entomology.

Brown, P.M.J., Roy, D.B., Harrower, C., Dean, H.J., Rorke, S.L., Roy, H.E. (2018) Spread of a model invasive alien species - the harlequin ladybird Harmonia axyridis in Britain and Ireland. Nature Scientific Data 5: 180239

Honek. A., Martinkova, Z., Dixon, A.F.G., Skuhrovec, J., Roy, H.E., Brabec, M., Pekar, S. (2018) Life-cycle of Harmonia axyridis in central Europe. Biocontrol 63: 241-252

Pocock, M.J.O., Roy, H.E., August, T., Kuria, A., Barasa, F., Bett, J., Githiru, M., Kairo, J., Kimani, J., Kinuthia, W., Kissui, B., Madindou, I., Mbogo, K., Mirembe, J., Mugo, P., Milkah Muniale, F., Njoroge, P., Gichohi Njuguna, E., Izava Olendo, M., Opige, M., Otieno, T.O.. Chebet Ng’weno, C., Pallangyo, E., Thenya, T., Wanjiru, A., Trevelyan, R. (2018) Developing the global potential of citizen science: assessing opportunities that benefit people, society and the environment in East Africa. Journal of Applied Ecology

Roy, H.E., Rabitsch, W., Scalera, R., Stewart, A., Gallardo, B., Genovesi, P., Essl, F., Adriaens, T., Bacher, S., Booy, O., Branquart, E., Brunel, S., Copp, G.H., Dean, H., D'hondt, B., Josefsson, M., Kenis, M., Kettunen, M., Linnamagi, M., Lucy, F., Martinou, A., Moore, N., Nentwig, W., Nieto, A., Pergl, J., Peyton, J., Roques, A., Schindler, S., Schönrogge, K., Solarz, W., Stebbing, P.D., Trichkova, T., Vanderhoeven, S., Valkenburg, J., Zenetos, A. & Nally, R.M. (2018b) Developing a framework of minimum standards for the risk assessment of alien species. Journal of Applied Ecology, 55, 526-538.

Seebens, H., Blackburn, T.M., Dyer, E.E., Genovesi, P., Hulme, P.E., Jeschke, J.M., Pagad, S., Pyšek, P., van Kleunen, M., Winter, M., Ansong, M., Arianoutsou, M., Bacher, S., Blasius, B., Brockerhoff, E.G., Brundu, G., Capinha, C., Causton, C.E., Celesti-Grapow, L., Dawson, W., Dullinger, S., Economo, E.P., Fuentes, N., Guénard, B., Jäger, H., Kartesz, J., Kenis, M., Kühn, I., Lenzner, B., Liebhold, A.M., Mosena, A., Moser, D., Nentwig, W., Nishino, M., Pearman, D., Pergl, J., Rabitsch, W., Rojas-Sandoval, J., Roques, A., Rorke, S., Rossinelli, S., Roy, H.E., Scalera, R., Schindler, S., Štajerová, K., Tokarska-Guzik, B., Walker, K., Ward, D.F., Yamanaka, T. & Essl, F. (2018) Global rise in emerging alien species results from increased accessibility of new source pools. Proceedings of the National Academy of Sciences

Ceryngier, P., Nedvěd, O., Grez, A.A., Riddick, E.W., Roy, H.E., San Martin, G., Steenberg, T., Veselý, P., Zaviezo, T., Zúñiga-Reinoso, A., Haelewaters, D. (2018) Predators and parasitoids of the harlequin ladybird, Harmonia axyridis, in its native range and invaded areas. Biological Invasions 20: 1009–1031

Brown, P.M.J., Roy, H.E. (2017) Native ladybird decline caused by the invasive harlequin ladybird Harmonia axyridis: evidence from a long term field study. Insect Conservation and Diversity

Grez, A.A., Zaviezo, T., Roy, H.E., Brown, P.M.J., Segura, B. (2017) In the shadow of the condor: Invasive Harmonia axyridis found at very high altitude in the Chilean Andes. Insect Conservation and Diversity 10:483-487

Bacher, S., Blackburn, T.M., Essl, F., Genovesi, P., Heikkilä, J., Jeschke, J.M., Jones, G., Keller, R., Kenis, M., Kueffer, C., Martinou, A.F., Nentwig, W., Pergl, J., Pyšek, P., Rabitsch, W., Richardson, D.M., Roy, H.E., Saul, W.-C., Scalera, R., Vilà, M., Wilson, J.R.U. & Kumschick, S. (2017) Socio-economic impact classification of alien taxa (SEICAT). Methods in Ecology and Evolution 9: 159-168

Chapman, D., Purse, B.V., Roy, H.E. and Bullock, J. (2017) Trade networks determine the distribution of invasive non-native species. Global Ecology and Biogeography 26: 901-917 

Pocock, M.J.O., Robinson, L., Tweddle, J., Roy, H.E. (2017) The diversity and evolution of ecological and environmental citizen science. PLoS ONE 12(4): e0172579.

Booy, Olaf; Mill, Aileen C.; Roy, Helen E.; Hiley, Alice; Moore, Niall; Robertson, Pete; Baker, Simon; Brazier, Matt; Bue, Mathilde; Bullock, Richard; Campbell, Steve; Eyre, Dominic; Foster, Jim; Hatton-Ellis, Maggie; Long, Jo; Macadam, Craig; Morrison-Bell, Camilla; Mumford, John; Newman, Jonathan; Parrott, David; Payne, Robin; Renals, Trevor; Rodgers, Eoina; Spencer, Mark; Stebbing, Paul; Sutton-Croft, Mike; Walker, Kevin J.; Ward, Alastair; Whittaker, Stan; Wyn, Gabe. 2017 Risk management to prioritise the eradication of new and emerging invasive non-native species. Biological Invasions, 19 (8). 2401-2417. 10.1007/s10530-017-1451-z

Seebens, H., Blackburn, T.M., Dyer, E.E., Genovesi, P., Hulme, P.E., Jeschke, J.M., Pagad, S., Pyšek, P., Winter, M., Arianoutsou, M., Bacher, S., Blasius, B., Brundu, G., Capinha, C., Celesti-Grapow, L., Dawson, W., Dullinger, S., Fuentes, N., Jäger, H., Kartesz, J., Kenis, M., Kreft, H., Kühn, I., Lenzner, B., Liebhold, A., Mosena. A., Moser, D., Nishino, M., Pearman, D., Pergl, J., Rabitsch, W., Rojas-Sandoval, J., Roques, A., Rorke, S., Rossinelli, S., Roy, H.E., Scalera, R., Schindler, S., Štajerová, K., Tokarska-Guzik, B., van Kleunen, M., Walker, K., Weigelt, P., Yamanaka, T., Essl, F. (2017) No saturation in the accumulation of alien species worldwide. Nature Communications 8: 14435

Essl, F., Hulme, P.E., Jeschke, J.M., Keller, R.; Pyšek, P., Richardson, D.M., Saul, W.-C., Bacher, S., Dullinger, S., Estévez, R.A., Kueffer, C., Roy, H.E., Seebens, H., Rabitsch, W (2017) Scientific and normative foundations for the valuation of alien species impacts: Thirteen core principles. Bioscience 67: 166-178

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 databases. Journal of Applied Ecology 54: 657-669

Pergl, J., Pyšek, P., Bacher, S., Essl, F., Genovesi, P., Harrower, C.A., Hulme, P.E., Jeschke, J.M., Kenis, M., Kühn, I., Perglová, 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

Latombe, G., Pyšek, P., Jeschke, J.M., Blackburn, T.M., Bacher, S., Capinha, C., Costello, M.J., Fernández, M., Gregory, R.D., Hobern, D., Hui, C., Jetz, W., Kumschick, S., McGrannachan, C. Pergl, J., Roy, H.E., Scalera, R., Squires, Z.E., Wilson, J.R.U., Winter, M., Genovesi, P., McGeoch, M.A. (2017) A vision for global monitoring of biological invasions. Biological Conservation 213: 295-308

Kenis, M., Adriaens, T., Brown, P.M.J., Katsanis, A., San Martin, G., Branquart, E., Maes, D., Eschen, R., Zindel, R., Van Vlaenderen, J., Babendreier, D., Roy, H.E., Hautier, L., Poland, R.L. (2017) Assessing the ecological risk posed by a recently established invasive alien predator: Harmonia axyridis as a case study. Biocontrol 62: 341-354

Haelewaters, D., Zhao, S.Y., Clusella-Trullas, S., Cottrell, T.E., De Kesel, A., Fiedler, L., Herz, A., Hesketh, H., Hui, C., Kleespies, R.G. Losey, J.E., Roy, H.E. (2017) Parasites of Harmonia axyridis: current research and perspectives. BioControl: 1-17

Wells, P., Baverstock, J., Clark, S., Jiggins, F., Roy, H.E., Pell, J.K. (2017) Determining the effects of life stage, shared prey density and the host plant on the intraguild predation of a native lacewing (Chrysoperla carnea) by an invasive coccinellid (Harmonia axyridis). BioControl 62: 373-384

Viglášová, S., Nedved, O., Zach, P., Kulfan, J., Parák, M., Honěk, A., Martinková, Z., Roy, H.E. (2017) Species assemblages of Ladybirds including the Harlequin Ladybird Harmonia axyridis: A comparison at large spatial scale in urban habitats. BioControl 62: 409-421

Pocock, M.J.O., Roy, H.E., Fox, R., Ellis, W.N. and Botham, M. (2017) Citizen science and invasive alien species: predicting the detection of the oak processionary moth Thaumetopoea processionea by moth recorders. Biological Conservation 208, 146-154

Roy, H. E., Hesketh, H., Purse, B. V., Eilenberg, J., Santini, A., Scalera, R., Stentiford, G. D., Adriaens, T., Bacela-Spychalska, K., Bass, D., Beckmann, K. M., Bessell, P., Bojko, J., Booy, O., Cardoso, A. C., Essl, F., Groom, Q., Harrower, C., Kleespies, R., Martinou, A. F., van Oers, M. M., Peeler, E. J., Pergl, J., Rabitsch, W., Roques, A., Schaffner, F., Schindler, S., Schmidt, B. R., Schönrogge, K., Smith, J., Solarz, W., Stewart, A., Stroo, A., Tricarico, E., Turvey, K. M.A., Vannini, A., Vilà, M., Woodward, S., Wynns, A. A. and Dunn, A. M.  (2016) Alien pathogens on the Horizon: opportunities for predicting their threat to wildlife. Conservation Letters 10: 477-484

Grez, A., Brown, P.M.J., Roy, H.E. and Zaviezo, T. (2016) Rapid spread of Harmonia axyridis in Chile and its effects on local coccinellid biodiversity. Diversity and Distributions 22: 982-994

Bela, G., Peltola, T., Young, J. C., Balázs, B., Arpin, I., Pataki, G., Hauck, J., Kelemen, E., Kopperoinen, L., Van Herzele, A., Keune, H., Hecker, S., Suškevičs, M., Roy, H. E., Itkonen, P., Külvik, M., László, M., Basnou, C., Pino, J. and Bonn, A. (2016), Learning and the transformative potential of citizen science. Conservation Biology 30: 990–999. doi:10.1111/cobi.12762

Roy, H.E., Baxter, E., Saunders, A., Pocock, M.J.O. (2016) Focal plant observations as a standardised method for pollinator monitoring: opportunities and limitations for mass participation citizen science. PloS one 11: e0150794.

Honek, A., Zdenka, M., Dixon, A., Roy, H.E., Stano, P. (2016) Long-term changes in communities of native coccinellids: population fluctuations and the effect of competition from an invasive non-native species. Insect Conservation and Diversity 9(3), 202-209.

Burns, F., Eaton, M.A., Barlow, K.E., Beckmann, B.C., Brereton, T., Brooks, D.R., Brown, P.M.J., Al Fulaij, N., Gent, T., Henderson, I., Noble, D.G., Parsons, M., Powney, G.D., Roy, H.E., Stroh, P., Walker, K., Wilkinson, J.W., Wotton, S.R., Gregory, R.D. (2016) Agricultural management and climatic change are the major 2 drivers of biodiversity change in the UK. PloS one, 11(3): p.e0151595

Roy, H.E., Brown, P.M.J., Adriaens, T.,  Berkvens, N., Borges, I., Clusella-Trullas, S., Comont, R.F., De Clercq, P., Eschen, R., Estoup, A., Evans, E.W., Facon, B., Gardiner, M.M., Gil, A., Grez, A.A., Guillemaud, T., Haelewaters, D., Herz, A., Honek, A., Howe, A.G., Hui, C., Hutchison, W.D., Kenis, M., Koch, R.L., Kulfan, J., Lawson Handley, L., Lombaert, E.,  Loomans, A., Losey, J. Lukashuk, A.O.,  Maes, D., Magro, A., Murray, K.M., San Martin, G., Martinkova, Z., Minnaar, I.A., Nedved, O., Orlova-Bienkowskaja, M.J., Osawa, N., Rabitsch, W., Ravn, HP, Rondoni, G., Rorke, S.L., Ryndevich, S.K., Saethre, M-G., Sloggett, J.J., Soares, A.O., Stals, R., Tinsley, M.C., Vandereycken, A. van Wielink, P., Viglasova, S., Zach, P., Zakharov, I.A., Zaviezo, T., Zhao, Z (2016) The harlequin ladybird, Harmonia axyridis: global perspectives on invasion history and ecology. Biological Invasions 18: 997-1044

Hui, C., Richardson, D.M., Landi, P., Henintsoa O. Minoarivelo, Garnas, J., Roy, H.E. (2016) Defining invasiveness and invasibility in ecological networks. Biological Invasions 18: 971-983

Garnas, J., Auger-Rozenberg, M-A., Roques, A., Bertelsmeier, C., Wingfield, M., Saccaggi, D.L., Roy, H.E., Slippers, B. (2016) Complex patterns of global spread in invasive insects:  Eco-evolutionary and management consequences. Biological Invasions 18: 935-52

Roy, H.E. et al. (2016) Invasive species: control wildlife pathogens too. Nature 530: 281 doi:10.1038/530281d

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(6), e0130488

Hulme, P.E., Pauchard, A., Pyšek, P., Vilà, M., Alba, C., Blackburn, T.M., Bullock, J.M., Chytrý, M., Dawson, W., Dunn, A.M., Essl, F., Genovesi, P., Maskell, L.C., Meyerson, L.A., Nuñez, M.A., Pergl, J., Pescott, O.L., Pocock, M.J.O., Richardson, D.M., Roy, H.E., Smart, S.M., Štajerová, K., Stohlgren, T., van Kleunen, M., Winter, M. (2015) Thomas and Palmer (2015) fail to elucidate the genuine threat invasive non-native plants pose to the floristic diversity of Britain. PNAS 112 (23), E2988-E2989

Essl, F. Bacher, S., Blackburn, T., Booy, O., Brundu, G., Brunel, S., Cardoso, A-C., Eschen, R., Gallardo, B., Galill, B., García-Berthou, E., Genovesi, P., Groom, Q., Harrower, C., Hulme, P., Katsanevakis, S., Kenis, M., Kühn, I., Kumschick, S., Martinou, A., Nentwig, W., O’Flynn, C., Pagad, S., Pergl, J., Pyšek, P., Rabitsch, W., Richardson, D.M., Roques, A., Roy, H.E., Scalera, R., Schindler, S., Seebens, H., Vanderhoeven, S., Vilà, M., Wilson, J.R.U., Zenetos, A. and Jeschke, J.M. (2015) Crossing frontiers in tackling pathways of biological invasions. BioScience biv082

Brown, P.M.J. and Roy, H.E. (2015) Reflections on the long-term assessment of ladybird populations in the Czech Republic and the United Kingdom. Acta Societatis Zoologicae Bohemoslovenicae 70: 19-27

Roy, H.E. and Brown, P.M.J. (2015) Ten years of invasion: Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in Britain. Ecological Entomology 40(4):336-48 

Roy, H.E., Preston, C.D. and Roy, D.B. (2015) Celebrating 50 years of the Biological Records Centre. Biological Journal of the Linnean Society 115: 678–689

Pocock, M.J.O., Roy, H.E., Preston, C.D. and Roy, D.B. (2015) The Biological Records Centre: a pioneer of citizen science. Biological Journal of the Linnean Society 115, 475-493

Roy, H.E., Rorke, S.L., Beckmann, B., Booy, O., Botham, M.S., Brown, P.M.J., Harrower, C., Noble, D., Sewell, J. and Walker, K. (2015) The contribution of volunteer recorders to our understanding of biological invasions. Biological Journal of the Linnean Society 115, 678-689

Pocock, M.J.O., Newson, S.E., Henderson, I.G., Peyton, J., Sutherland, W.J., Noble, D.G., Ball, S.G., Beckmann, B.C., Biggs, J., Brereton, T., Bullock, D.J., Buckland, S.T., Edwards, M., Eaton, M.A., Harvey, M.C., Hill, M.O., Horlock, M., Hubble, D.S., Julian, A.M., Mackey, E.C., Mann, D.J., Marshall, M.J., Medlock, J.M., O’Mahony, E.M., Pacheco, M., Porter, K., Prentice, S., Procter, D.A., Roy, H.E., Southway, S.E., Shortall, C.R., Stewart, A.J.A., Wembridge, D.E., Wright, M.A. and Roy, D.B. (2015) Developing and enhancing biodiversity monitoring programmes: a collaborative assessment of priorities. Journal of Applied Ecology 52(3), 686-695

Purse, B.V., Comont, R., Butler, A., Brown, P.M.J., Kessell, C., Roy, H.E (2014) Landscape, climate and colour pattern polymorphism in determining patterns of spread of the alien ladybird Harmonia axyridis. Journal of Biogeography, DOI: 10.1111/jbi.12423

Roy, H.E., Peyton, J., Aldridge, D.C., Bantock, T., Blackburn, T.M., Britton, R., Clark, P., Cook, E., Dehnen-Schmutz, K., Dines, T., Dobson, M., Edwards, F., Harrower, C., Harvey, M.C., Minchin, D., Noble, D.G., Parrott, D., Pocock, M.J.O., Preston, C.D., Roy, S., Salisbury, A., Schönrogge, K., Sewell, J., Shaw, R.H., Stebbing, P., Stewart, A.J.A. and Walker, K.J. (2014) Horizon Scanning for Invasive Non-Native Species in Britain. Global Change Biology 20, 3859-3871 

Roy, H.E., Preston, C.D., Harrower, C.A., Rorke, S.L., Noble, D., Sewell, J.,  Walker, K. Marchant, J., Seeley, B., Bishop, J., Jukes, A., Musgrove, A., Pearman D. (2014) GB Non-native Species Information Portal: documenting the arrival of non-native species in Britain.  Biological Invasions 16, 2495-2505 

Panigaj, L., Zach, P., Honěk, A., Nedvěd, O., Kulfan, J., Martinková, Z., Selyemová, D., Viglášová, S., Roy HE (2014) The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe. ZooKeys 412: 89–112. doi: 10.3897/zookeys.412.6587

Caffrey, J.M., Baars, J-R, Barbour, J.H., Boets, P., Boon, P., Davenport, K., Dick, J.T.A., Early, J., Edsman, Gallagher, C., Gross, J., Heinimaa, P., Horrill, C., Hudin, S., Hulme, P.E., Hynes, S., MacIsaac, H.J., McLoone, P., Millane, M., Moen, T.L., Moore, N., Newman, J., O’Conchuir, R., O’Farrell, M., O’Flynn, C., Oidtmann, B., Renals, T., Ricciardi, A., Roy, H.E., Shaw, R., Weyl, O., Williams, F., Lucy, F.E. (2014) Tackling Invasive Alien Species in Europe: the top 20 issues.  Management of Biological Invasions, 5, 1-20

Katsanevakis, S., Genovesi, P., Gaiji, S., Hvid, H.N., Roy, H.E., Nunes, A.L., Aguado, F.S., Bogucarskis, K., Debusscher, B. and Deriu, I. (2013). Implementing the European policies for alien species: networking, science, and partnership in a complex environment. Management of Biological Invasions 4(1): 3-6.

Jeffries, D.L., Chapman, J., Roy, H.E., Humphries, S. Harrington, R., Brown, P.M.J., Lawson Handley, L-J. (2013) Characteristics and drivers of high-altitude ladybird flight: insights from vertical-looking entomological radar. PlosOne 8(12): e82278. doi:10.1371/journal.pone.0082278

Comont, R.F., Roy, H.E., Lewis, O.T., Harrington, R., Shortall, C., Purse, B.V. (2013) Ecological correlates of local extinction and colonisation in British ladybird beetles. Biological Invasions 16, 1805-1817

Comont, R. F., Purse, B., Phillips, W., Kunin, W.E., Hanson, M., Lewis, O.T., Harrington, R., Shortall, C., Roy, H.E. (2013) Escape from parasitism by the invasive alien ladybird, Harmonia axyridis. Insect Conservation and Diversity 7, 334–342

Sandvik, H., B.-E. Sæther, T. Holmern, J. Tufto, S. Engen, and H. E. Roy (2013) Generic ecological impact assessments of alien species in Norway: a semi-quantitative set of criteria. Biodiversity and Conservation, 22, 37-62

Purse, B., Gregory, S., Harding, P. and Roy, H.E. (2012) Habitat use governs range size and fill of saprophagous macroarthropods –a case study of British woodlice (Isopoda: Oniscidea).  European Journal of Entomology, 109, 543–552 

Roy, H.E. and Lawson-Handley, L.J (2012) Networking: a community approach to invaders and their parasites. Functional Ecology, 26, 1238-1248 

Comont, R.F., Roy, H.E., Lewis, O.T., Harrington, R., Shortall, C., Purse, B.V. (2012) Using biological traits to explain ladybird distribution patterns.  Journal of Biogeography, 39, 1772-1781

Gardiner, M., Losey, J., Smyth, R., Allee, L., Roy, H.E., and Brown, P.M.J. (2012) Data Accuracy and Citizen Science: Lessons Learned from Studying Lady Beetles in the US and UK.  Frontiers in Ecology and the Environment, 10, 471-476

Roy, H.E., Adriaens, T., Isaac, N.J.B., Kenis, M., Onkelinx, T., San Martin, G., Brown, P.M.J., Hautier, L., Poland, R.L., Roy, D.B., Comont, R., Eschen, R., Frost, R., Zindel, R., Van Vlaenderen, J., Nedvěd, O., Ravn, H.P., Grégoire, J-C., de Biseau, J-C. and Maes, D. (2012) Invasive alien predator causes rapid declines of native European ladybirds.  Diversity and Distributions DOI: 10.1111/j.1472-4642.2012.00883.x


Roy, H.E. and Brown, P.M.J. (in press) Field Guide to the Ladybirds of Britain and Ireland. Illustrated by Richard Lewington. Bloomsbury. Publication date November 2018

Collins, G. A. and Roy, H.E. (in press) Provisional atlas of the aculeate Hymenoptera of Britain and Ireland Part 10. Biological Records Centre, Centre for Ecology & Hydrology, UK.

Majerus, M.E.N., Roy, H.E. and Brown, P.M.J. (2016) Ladybirds. Cambridge University Press.

Collins, G. A. and Roy, H.E. (2016) Provisional atlas of the aculeate Hymenoptera of Britain and Ireland Part 9.  142 pp. Biological Records Centre, Centre for Ecology & Hydrology, UK. ISBN 978-1-906698-59-1

Roy, H.E., Preston, C.D. and Roy, D.B. (2015) Celebrating 50 years of the Biological Records Centre. Special Issue of the Biological Journal of the Linnean Society

Booy, O. Wade, M. and Roy, H.E. (2015) Field Guide to Invasive Plants and Animals in Britain. Bloomsbury, London

Roy, H.E., Brown, P.M.J., Comont, R.F., Poland, R.L. and Sloggett, J.J. (2013) Ladybirds (Naturalists’ Handbook 10).  Revised from Majerus and Kearns (1989) Pelagic Publishing, Exeter.

Collins, G. A. and Roy, H.E. (2012) Provisional atlas of the aculeate Hymenoptera of Britain and Ireland Part 8.  149 pp. Biological Records Centre, Centre for Ecology & Hydrology, UK. ISBN 978-1-906698-29-4

Roy, H.E., De Clercq, P., Handley, L., Poland, R., Sloggett, J. and Wajnberg, E. (2012) Invasive alien arthropod predators and parasitoids: an ecological approach. Book series: Progress in Biological Control.  Springer.

Roy, H.E., Brown, P.M.J., Frost, R. and Poland, R.L. (2011) Ladybirds (Coccinellidae) of Britain and Ireland. 198pp. Biological Records Centre, Centre for Ecology & Hydrology, UK. ISBN 978-1-906698-20-1

Roy, H.E., Vega, F., Chandler, D., Goettel, M.S., Pell, J.K. and Wajnberg, E. (2010) The ecology of fungal entomopathogens.  198pp. Springer. ISBN: 978-90-481-3965-1

Edwards, R. and Roy, H.E. (2009) Provisional atlas of the aculeate Hymenoptera of Britain and Ireland Part 7.  145 pp. Biological Records Centre, Centre for Ecology & Hydrology, UK. ISBN 978-1-906698-14-0

Roy, H.E. and Wajnberg, E. (2008) From biological control to invasion: the ladybird, Harmonia axyridis, as a model species. 287. Springer. ISBN: 978-1-4020-6938-3



1994 – 1997    PhD  Interactions between aphid predators and the entomopathogenic fungus Erynia neoaphidis - University of Nottingham

1993 – 1997    MSc Environmental Science: Measurement, Modelling and Analysis (Distinction) - University of Nottingham

1989 – 1992    BSc (Hons.) Biology (Upper Second Class Honours) – University of Southampton  

Panels, committees and memberships

1995-2005 Member of the Royal Entomological Society (President June 2020-2022)

2005 - 2018 Fellow of the Royal Entomological Society

2018 - Honorary Fellow of the Royal Entomological Society

1995 - Member of British Ecological Society

2015 - Member of the Entomological Club

Committee roles:

2015 - Member of the British Ecological Society Outreach Committee

2015 - Member of the Royal Entomological Society Outreach Committee

2013 -   Convenor of the British Ecological Society Special Interest Group on Citizen Science

2013 -   IUCN Invasive Species Specialist Group

2007 -   Council member for the National Forum for Biological Recording

2007-    Convenor of the International Organisation for Biological Control Working Group on “Benefits and Risks of Exotic Biological Control Agents

Editorial positions:

Associate editor for BioControl

Associate editor for European Journal of Entomology

Editorial board member for Agricultural and Forest Entomology