Peer Reviewed Publications
(* indicates papers co-authored with a student ** indicates co-authored with a postdoc)
Siemens, D. H. and B. A. Roy. 2005.** Tests for parasite-mediated frequency-dependent selection in natural populations of an asexual plant species. Evolutionary Ecology 19 321-338.
Roy, B. A. 2004. Rounding up the costs and benefits of herbicides. Proceedings of the National Academy of Sciences, USA 101 (39): 13974-13975
Roy, B.A., S. Güsewell, and J. Harte. 2004. Response of plant pathogens and herbivores to a warming experiment. Ecology 85 (9): 2570-2581.
Stanton, M. L., D. A. Thiede, and B. A. Roy. 2004. Consequences of intraspecific competition and environmental variation for selection in the mustard Sinapis arvensis: Contrasting ecological and evolutionary perspectives. American Naturalist 164 (6): 736-752
Schürch, S., and B. A. Roy. 2004.* Comparing single- versus mixed-genotype infection of Mycosphaerella graminicola on wheat: effects on pathogen virulence and host tolerance. Journal of Evolutionary Biology 18: 1-14.
Joshi, J. S.J. Otway, J. Koricheva, A.B. Pfisterer, J. Alphei, B.A. Roy, M. Scherer-Lorenzen, B. Schmid, E. Spehn, and A. Hector. 2004. Bottom-up effects and feed-backs in simple and diverse experimental grassland communities. Pages 115-134 In "Insects and Ecosystem function" W. W Weisser and E. Siemann, editors, Springer Verlag
Siemens, D. H., H. Lischke, N. Maggiulli, S. Schürch, and B.A. Roy. 2003.** Cost of resistance and tolerance under competition: the defense-stress benefit hypothesis. Evolutionary Ecology 17: 247-263
Steinger, T., B.A. Roy, and M. L. Stanton. 2003.** Evolution in stressful environments II: adaptive value and costs of plasticity in response to low light in Sinapisarvensis. Journal of Evolutionary Biology 16:313-323
Pflugshaupt, K., J. Kollmann, M. Fischer & B.A. Roy. 2002.** Pollen quantity and quality affect fruit abortion in small populations of a rare fleshy-fruited shrub. Basic and Applied Ecology 3 (4): 319-327
Naef, A., B.A. Roy, R. Kaiser and R. Honegger. 2002.* Insect-mediated reproduction of systemic infections by Puccinia arrhenatheri on Berberis vulgaris (Berberidaceae). New Phytologist 154 (3): 717-730
Kirchner, J. W. and B.A. Roy. 2002. Evolutionary implications of host-pathogen specificity: fitness consequences of pathogen virulence traits. Evolutionary Ecology Research 14 (1): 27-48
Roy, B.A., J. W. Kirchner, C. Christian and L. Rose. 2001. High disease incidence and apparent tolerance in a North American Great Basin plant community. Evolutionary Ecology 14 (4-6): 421-438
Kirchner, J. W. and B.A. Roy. 2001. Evolutionary implications of host-pathogen specificity: The fitness consequences of host life history traits. Evolutionary Ecology 14: 665-692
Roy, B.A. 2001. Patterns of association between crucifers and their flower mimic pathogens: Host jumps are more common than coevolution or cospeciation. Evolution 55 (1): 41-53
Utelli, A. B. and B.A. Roy. 2001. * Causes and consequences of floral damage in Aconitumlycoctonum at high and low elevations in Switzerland Oecologia127:266-273
Roy, B.A. and J. W. Kirchner. 2000. Evolutionary dynamics of pathogen resistance and tolerance. Evolution 54 (1): 51-63
Pfunder, M. and B.A. Roy. 2000.* Pollinator-mediated interactions between a pathogenic fungus, Uromyces pisi (Pucciniaceae) and its host plant, Euphorbia cyparissias (Euphorbiaceae). American Journal of Botany 88 (1): 48-55
Kollmann, J., T. Steinger and B.A. Roy. 2000. ** Clonal diversity and evidence of sexuality in European Rubus species based on AFLP and allozyme analysis. American Journal of Botany 87 (11): 1592-1598.
Pfunder, M. and B.A. Roy. 2000. * Sequence variation and spatial distribution of pseudoflower-forming rust fungi (Uromycespisi s.l.) on Euphorbiacyparissias. Mycological Research 105 (1): 57-66
Schürch, S., M. Pfunder and B.A. Roy. 2000. * Effects of ants on the reproductive success of Euphorbia cyparissias and associated pathogenic rust fungi. Oikos 88: 6-12
Stanton, M. L., B.A. Roy and D. A. Thiede. 2000. Evolution in stressful environments. I. Phenotypic variability, phenotypic selection, and response to selection in five distinct environmental stresses. Evolution 54 (1): 93-111
Utelli, A.-B. and B.A. Roy. 2000.* Pollinator abundance and behavior on Aconitum lycoctonum (Ranunculaceae): an analysis of the quantity and quality components of pollination. Oikos 89 (3):461-470.
Utelli, A. B., B.A. Roy and M. Baltisberger. 2000. * Molecular and morphological analyses of European Acontium species (Ranunculaceae). Plant Systematics and Evolution 224: 195-212.
Roy, B.A. and A. Widmer. 1999. Floral mimicry: a fascinating yet poorly understood phenomenon. Trends in Plant Science 4:325-330.
Roy, B.A. and M. L. Stanton. 1999. Asymmetry of wild mustard, Sinapis arvensis (Brassicaceae), in response to severe physiological stresses. Journal of Evolutionary Biology 12: 440-449.
Roy, B.A., M.L. Stanton and S. M. Eppley. 1999. Effects of environmental stress on leaf hair density and consequences for selection. Journal of Evolutionary Biology 12: 1089-1103
Kirchner,J.W. and B.A. Roy. 1999. The evolutionary advantages of dying young: epidemiological implications of longevity in metapopulations. American Naturalist 154: 140-159.
Utelli, A. B., B.A. Roy and M. Baltisberger. 1999. * History can be more important than "pollination syndrome" in determining the genetic structure of plant populations: the case of Aconitum lycoctonum. Heredity 82: 574-584.
Roy, B.A. 1998. Differentiating the effects of origin and frequency in reciprocal transplant experiments used to test negative frequency-dependent selection hypotheses Oecologia115 : 73-83.
Roy, B.A., D. Vogler, T. Bruns and T. Szaro. 1998. Cryptic species in the Puccinia monoica complex. Mycologia 90 (5) 847-854
Raguso, R. A. and B.A. Roy. 1998. "Floral" scent production by Puccinia rust fungi that mimic flowers. MolecularEcology 7 (9) 1127-1136
Widmer, A., M. Soliva, A. Erhardt and B.A. Roy. 1998. New Research: Testing speciation mechanisms in orchids with molecular and ecological methods. Bulletin of the Geobotanical Institute ETH 64 : 103-107.
Roy, B.A. and R. Raguso. 1997. Olfactory versus visual cues in a floral mimicry system. Oecologia 109 (3) 414-426.
Utelli, A.-B., B.A. Roy and M. Baltisberger. 1997. * New Research: Evolution of mating systems in plants: the causes and consequences of inbreeding in Aconitum lycoctonum s.l. Bulletin of the Geobotanical Institute 63: 87-93.
Roy, B.A. 1996. A plant pathogen influences pollinator behavior and may influence reproduction of non-hosts. Ecology 77 (8): 2445-2457.
Roy, B.A. 1996. Floral mimicry, coevolution of hosts and pathogens, and stress tolerance versus resistance to pathogens. Bulletin of the Geobotanical Institute ETH 62: 75-78.
Roy, B.A. 1995. The breeding systems of six species of Arabis (Brassicaceae). American Journal of Botany 82: 869-877.
Roy, B.A. 1994. The use and abuse of pollinators by fungi. Trends in Ecology and Evolution 9 (9): 335-339.
Roy, B.A. 1994. The effects of pathogen-induced pseudoflowers and buttercups on each other's insect visitation. Ecology 75 (2): 352-358.
Roy, B.A. 1993. Floral mimicry by a plant pathogen. Nature 362 (6415): 56-58.
Roy, B.A. 1993. Patterns of rust infection as a function of host genetic diversity and host density in natural populations of the apomictic crucifer, Arabisholboellii. Evolution 47 (1): 111-124.
Roy, B.A., and P. Bierzychudek. 1993. The potential for rust infection to cause natural selection in apomictic Arabis holboellii (Brassicaceae). Oecologia 95: 533-541
Roy, B.A., and L. Rieseberg. 1989. Evidence for apomixis in Arabis. Journal of Heredity 80: 506-508.
Roy, B.A., and L. C. Matten. 1989. Lycopods from the New Albany Shale. PalaeontographicaB 212: 1-45.
Book reviews, field guides, and popular writings
Roy, B.A. 1989. Colorado Flora: Western Slope, by W. A. Weber. Quarterly Review of Biology 64: 348-349. (Book review)
Roy, B.A. 1985. Fossil plants associated with the roof shales of the Murphysboro Coal Member. pp. 1-7 In L. C. Matten (ed.), Third Mid-Continent Paleobotanical Colloquium, Southern Illinois University, Carbondale. (Field Guide)