This map shows the geographic impact of D. B. Roy's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by D. B. Roy with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites D. B. Roy more than expected).
This network shows the impact of papers produced by D. B. Roy. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by D. B. Roy. The network helps show where D. B. Roy may publish in the future.
Co-authorship network of co-authors of D. B. Roy
This figure shows the co-authorship network connecting the top 25 collaborators of D. B. Roy.
A scholar is included among the top collaborators of D. B. Roy based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with D. B. Roy. D. B. Roy is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Isaac, Nick J. B., Tom August, Colin Harrower, & D. B. Roy. (2013). Trends in the distribution of UK native species 1970-2010. Preliminary report to JNCC. NERC Open Research Archive (Natural Environment Research Council).2 indexed citations
5.
Pergl, Jan, Wolfgang Nentwig, Marten Winter, et al.. (2012). Progress on DAISIE: alien species inventories in Europe updated. NERC Open Research Archive (Natural Environment Research Council).5 indexed citations
6.
Roques, Alain, Marc Kenis, D. Lees, et al.. (2010). Leaf and seed beetles (Coleoptera, Chrysomelidae).. 267–292.12 indexed citations
7.
Kenis, Marc, Alain Roques, D. Lees, et al.. (2010). Lice and fleas (Phthiraptera and Siphonaptera).. 833–849.5 indexed citations
8.
Navajas, Maria, Alain Migeon, Agustín Estrada‐Peña, et al.. (2010). Mites and ticks (Acari).. 149–192.16 indexed citations
9.
Kenis, Marc, Manuela Branco, Alain Roques, et al.. (2010). Impact of alien terrestrial arthropods in Europe.. 51–71.30 indexed citations
10.
Sauvard, Daniel, Manuela Branco, Ferenc Lakatos, et al.. (2010). Weevils and bark beetles (Coleoptera, Curculionoidea).. 219–266.12 indexed citations
Cocquempot, Christian, Åke Lindelöw, Alain Roques, et al.. (2010). Longhorn beetles (Coleoptera, Cerambycidae).. HAL (Le Centre pour la Communication Scientifique Directe). 193–218.13 indexed citations
13.
Roques, Alain, Marc Kenis, D. Lees, et al.. (2010). Taxonomy, time and geographic patterns.. 11–26.24 indexed citations
14.
Roques, Alain, Marc Kenis, D. Lees, et al.. (2010). Special Issue: Alien terrestrial arthropods of Europe..3 indexed citations
Roques, Alain, Marc Kenis, D. Lees, et al.. (2010). Springtails and Silverfishes (Apterygota).. 851–854.2 indexed citations
17.
Brooks, David R., L. G. Firbank, David A. Bohan, et al.. (2007). The implications of genetically modified herbicide-tolerant crops for UK farmland biodiversity: a summary of the results of the Farm Scale Evaluations project. Rothamsted Repository (Rothamsted Repository).2 indexed citations
18.
Hill, M. O., Christopher Preston, Sam D. S. Bosanquet, & D. B. Roy. (2007). BRYOATT: attributes of British and Irish mosses, liverworts and hornworts.164 indexed citations
19.
Palmer, Margaret A. & D. B. Roy. (2001). An estimate of the extent of dystrophic, oligotrophic, mesotrophic and eutrophic standing fresh water in Great Britain. NERC Open Research Archive (Natural Environment Research Council).11 indexed citations
20.
Hill, M. O., J. O. Mountford, D. B. Roy, & R. G. H. Bunce. (1999). Ellenberg's indicator values for British plants. ECOFACT Volume 2: technical annex.. OpenGrey (Institut de l'Information Scientifique et Technique).227 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.