| Differences in the climatic debts of birds and butterflies at a continental scale V Devictor, C Van Swaay, T Brereton, L Brotons, D Chamberlain, J Heliölä, ... Nature climate change 2 (2), 121-124, 2012 | 985 | 2012 |
| Red data book of European butterflies (Rhopalocera) C Van Swaay, M Warren Council of Europe, 1999 | 820 | 1999 |
| European red list of butterflies C van Swaay, A Cuttelod, S Collins, D Maes, ML Munguira, M Šašić, ... Luxembourg: Publications Office of the European Union, 2010 | 783 | 2010 |
| Climatic risk atlas of European butterflies J Settele, O Kudrna, A Harpke, I Kühn, C Van Swaay, R Verovnik, ... Pensoft, 2008 | 571 | 2008 |
| Opportunistic citizen science data of animal species produce reliable estimates of distribution trends if analysed with occupancy models AJ Van Strien, CAM Van Swaay, T Termaat Journal of Applied Ecology 50 (6), 1450-1458, 2013 | 522 | 2013 |
| Biotope use and trends of European butterflies C Van Swaay, M Warren, G Loïs Journal of Insect Conservation 10 (2), 189-209, 2006 | 514 | 2006 |
| The decline of butterflies in Europe: Problems, significance, and possible solutions MS Warren, D Maes, CAM van Swaay, P Goffart, H Van Dyck, NAD Bourn, ... Proceedings of the National Academy of Sciences 118 (2), e2002551117, 2021 | 484 | 2021 |
| Advantages of volunteer‐based biodiversity monitoring in Europe DS Schmeller, PY HENRY, R Julliard, B Gruber, J Clobert, F Dziock, ... Conservation biology 23 (2), 307-316, 2009 | 479 | 2009 |
| High Nature Value Farmland in Europe-An estimate of the distribution patterns on the basis of land cover and biodiversity data ML PARACCHINI, JE Petersen, Y Hoogeveen, C Bamps, I Burfield, ... | 409 | 2008 |
| Butterfly monitoring in Europe: methods, applications and perspectives CAM van Swaay, P Nowicki, J Settele, AJ Van Strien Biodiversity and Conservation 17 (14), 3455-3469, 2008 | 406 | 2008 |
| Declines in common, widespread butterflies in a landscape under intense human use H Van Dyck, AJ Van Strien, D Maes, CAM Van Swaay Conservation Biology 23 (4), 957-965, 2009 | 379 | 2009 |
| Global biodiversity monitoring: from data sources to essential biodiversity variables V Proença, LJ Martin, HM Pereira, M Fernandez, L McRae, J Belnap, ... Biological Conservation 213, 256-263, 2017 | 362 | 2017 |
| Harnessing the biodiversity value of Central and Eastern European farmland LME Sutcliffe, P Batáry, U Kormann, A Báldi, LV Dicks, I Herzon, D Kleijn, ... Diversity and Distributions 21 (6), 722-730, 2015 | 312 | 2015 |
| The importance of calcareous grasslands for butterflies in Europe CAM Van Swaay Biological conservation 104 (3), 315-318, 2002 | 277 | 2002 |
| Global warming and excess nitrogen may induce butterfly decline by microclimatic cooling MF Wallisdevries, CAM Van Swaay Global Change Biology 12 (9), 1620-1626, 2006 | 262 | 2006 |
| Multi‐generational long‐distance migration of insects: studying the painted lady butterfly in the Western Palaearctic C Stefanescu, F Páramo, S Åkesson, M Alarcón, A Ávila, T Brereton, ... Ecography 36 (4), 474-486, 2013 | 227 | 2013 |
| An updated checklist of the European butterflies (Lepidoptera, Papilionoidea) M Wiemers, E Balletto, V Dincă, ZF Fric, G Lamas, V Lukhtanov, ... ZooKeys, 9, 2018 | 224 | 2018 |
| de Vlinderstichting, 2006 F Bos, M Bosveld, D Groenendijk, C Van Swaay, I Wynhoff De dagvlinders van Nederland, verspreiding en bescherming (Lepidoptera …, 0 | 200 | |
| The relationship between butterflies and environmental indicator values: a tool for conservation in a changing landscape JGB Oostermeijer, CAM Van Swaay Biological conservation 86 (3), 271-280, 1998 | 191 | 1998 |
| Over a century of data reveal more than 80% decline in butterflies in the Netherlands AJ van Strien, CAM van Swaay, WTFH van Strien-van Liempt, MJM Poot, ... Biological Conservation 234, 116-122, 2019 | 187 | 2019 |
Martin WarrenChief Executive, Butterfly ConservationVerified email at butterfly-conservation.org
