PUBLICATIONS
Please see Jeff Karron's profiles on Researchgate and Google Scholar for article PDFs.
Publications:
Mitchell RJ, Starvaggi D, Fitzgerald V, and Karron JD. 2024. The timing of visits by large and small bees differentially affects pollination success in Mimulus ringens. American Journal of Botany, DOI: 10.1002/ajb2.16375 PDF
Shelton WR, Mitchell RJ, Christopher DA, Jack LP and Karron JD. 2023. Among‐individual variation in flowering phenology affects flowering synchrony and mating opportunity. AMERICAN JOURNAL OF BOTANY. doi.org/10.1002/ajb2.16269 Article Link
Christopher DA, Karron JD, Semski WR, Smallwood PA, Trapnell DW, Mitchell RJ. 2021. Selfing rates vary with floral display, pollinator visitation and plant density in natural populations of Mimulus ringens. JOURNAL OF EVOLUTIONARY BIOLOGY https://doi.org/10.1111/jeb.13781 PDF
Karron JD, Christopher DA and Semski WR. 2021. Pollen transport: Illuminating a key mechanism of disassortative pollination. CURRENT BIOLOGY 31: 893-895. PDF
Christopher DA, Mitchell RJ, Karron JD. 2020. Pollination intensity and paternity in flowering
plants, ANNALS OF BOTANY 125: 1–9. PDF
Christopher DA, Mitchell RJ, Trapnell DW, Smallwood PA, Semski WR, Karron JD. 2019. Hermaphroditism promotes mate diversity in flowering plants. AMERICAN JOURNAL OF BOTANY 106: 1131–1136. PDF
Minnaar C, Anderson B, de Jager ML, Karron JD. 2019. Plant-pollinator interactions along the pathway to paternity. ANNALS OF BOTANY PDF
Whitehead MR, Lanfear R, Mitchell RJ, Karron JD. 2018 Plant mating systems often vary widely among populations. FRONTIERS IN ECOLOGY AND EVOLUTION 6:38 PDF
Krauss SL, Phillips RD, Karron JD, Johnson SD, Roberts DG, Hopper SD. 2017. Novel consequences of bird pollination for plant mating. TRENDS IN PLANT SCIENCE 22: 395-410.
Hallett AC, Mitchell RJ, Chamberlain ER, Karron JD. 2017. Pollination success following loss of a frequent pollinator: the role of compensatory visitation by other effective pollinators.
AOB PLANTS 10.1093/aobpla/plx020 PDF
Sorin YB, Mitchell RJ, Trapnell DW, Karron JD. 2016. Effect of pollination and postpollination processes on selfing rate in Mimulus ringens. AMERICAN JOURNAL OF BOTANY 103: 1524-1528.
Mitchell RJ, Wilson WG, Holmquist KG, Karron JD. 2013. Influence of pollen transport dynamics on sire profiles and multiple paternity in flowering plants. PLOS One 8(10) 1-7.
Karron JD, Mitchell RJ. 2012. Effects of floral display size on male and female reproductive success in Mimulus ringens. ANNALS OF BOTANY 109: 563-570
Holmquist KG, Mitchell RJ, Karron JD. 2012. Influence of pollinator grooming on pollen-mediated gene dispersal in Mimulus ringens (Phrymaceae). PLANT SPECIES BIOLOGY 27: 77-85.
Karron JD, Ivey CT, Mitchell RJ, Whitehead MR, Peakall R, Case AL. 2012. New perspectives on the evolution of plant mating systems. ANNALS OF BOTANY 109: 493-503.
Nunziata SO, Karron JD, Mitchell RJ, Lance SL, Jones KL, Trapnell DW. 2012. Characterization of 42 polymorphic microsatellite loci in Mimulus ringens (Phrymaceae) using Illumina sequencing. AMERICAN JOURNAL OF BOTANY 99 (12) e 477-e480.
Medrano M, Requerey R, Karron JD, Herrera CM. 2012. Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the self-outcrossing paradigm in the evolution of mixed mating. PLANT BIOLOGY 14: 801-810.
Flanagan RJ, Mitchell RJ, Karron JD. 2011. Effects of multiple competitors for pollination on bumblebee foraging patterns and Mimulus ringens reproductive success. OIKOS 120: 200-207.
Flanagan RJ, Mitchell RJ, Karron JD. 2010. Increased relative abundance of an invasive
competitor for pollination, Lythrum salicaria, reduces seed number in Mimulus ringens. OECOLOGIA 164: 445-454.
Karron JD, Holmquist KG, Flanagan RJ, Mitchell RJ. 2009. Pollinator visitation patterns strongly influence among-flower variation in selfing rate. ANNALS OF BOTANY 103: 1379-1383.
Flanagan RJ, Mitchell RJ, Knutowski D, Karron JD. 2009. Interspecific pollinator movements
reduce pollen deposition and seed production in Mimulus ringens (Phrymaceae). AMERICAN JOURNAL OF BOTANY 96: 809–815.
Mitchell RJ, Flanagan RJ, Brown BJ, Waser NM, Karron JD. 2009. New frontiers in competition for pollination. ANNALS OF BOTANY 103: 1403–1413.
Karron JD, Mitchell RJ, Bell JM. 2006. Multiple pollinator visits to Mimulus ringens (Phrymaceae) flowers increase mate number and seed set within fruits. AMERICAN JOURNAL OF BOTANY 93: 1306-1312.
Bell JM, Karron JD, Mitchell RJ. 2005. Interspecific competition for pollination lowers seed production and outcrossing in Mimulus ringens. ECOLOGY 86: 776-785.
Mitchell RJ, Karron JD, Holmquist KG, Bell JM. 2005. Patterns of multiple paternity in fruits of Mimulus ringens (Phrymaceae). AMERICAN JOURNAL OF BOTANY 92: 885-890.
Karron JD, Mitchell RJ, Holmquist KG, Bell JM, Funk B. 2004. The influence of floral display size on selfing rates in Mimulus ringens. HEREDITY 92: 242-248.
Mitchell RJ, Karron JD, Holmquist KG, Bell JM. 2004. The influence of Mimulus ringens floral display size on pollinator visitation patterns. FUNCTIONAL ECOLOGY 18: 116-124.
Linhart YB., Ellwood LM, Karron JD, Gehring JL. 2003. Genetic differentiation of dwarf mistletoes Arceuthobium vaginatum and A. americanum on their principal and secondary hosts. INTERNATIONAL JOURNAL OF PLANT SCIENCES 164: 61-69.
Reinartz GE, Karron JD, Phillips RB, Weber JL. 2000. Patterns of microsatellite polymorphism in the range-restricted bonobo (Pan paniscus): considerations for interspecific comparison to chimpanzees (P. troglodytes). Molecular Ecology 9: 315-328.
Karron JD 1998. Genetic consequences of different patterns of distribution and abundance. Chapter 10 in The Biology of Rarity. W. E. Kunin and K. J. Gaston, eds. Chapman & Hall, London, pp. 174-189.
Karron JD, Jackson RT, Thumser NN, † Schlicht SL. 1997. Outcrossing rates of individual Mimulus ringens genets are correlated with anther-stigma separation. HEREDITY 79: 365-370.
Thumser NN, Karron JD, Ficken MS. 1996. Interspecific variation in the calls of Spheniscus penguins. THE WILSON BULLETIN 108: 72-79.
Karron JD, Tucker R, Thumser NN, Reinartz JA. 1995. Comparison of pollinator flight movements
and gene dispersal patterns in Mimulus ringens. HEREDITY 75: 612-617. PDF
Karron JD, Thumser NN, Tucker R, Hessenauer AJ. 1995. The influence of population density on outcrossing rates in Mimulus ringens. HEREDITY 75: 175-180.
Thumser NN, Karron JD. 1994. Patterns of genetic polymorphism in five species of penguins. AUK 111: 1018-1022.
Karron JD, Marshall DL. Effects of environmental variation on fitness of singly and multiply sired progenies of Raphanus sativus (Brassicaceae). AMERICAN JOURNAL OF BOTANY 80: 1407-1412.
Karron JD. 1991. Patterns of genetic variation and breeding systems in rare plantspecies. Chapter 6 in Genetics and Conservation of Rare Plants. D. A. Falk and K. E. Holsinger, eds. Oxford University Press, Oxford.
Karron JD, Marshall, DL. 1990. Fitness consequences of multiple paternity in wild radish,
Raphanus sativus. EVOLUTION 44: 260-268.
Karron JD, Marshall DL, Oliveras DM. 1990. Numbers of sporophytic self-incompatibility alleles
in populations of wild radish. THEORETICAL AND APPLIED GENETICS 79: 457-460.
Karron JD. 1989. Breeding systems and levels of inbreeding depression in geographically restricted and widespread species of Astragalus (Fabaceae). AMERICAN JOURNAL OF BOTANY 76: 331-340.
Karron JD, Linhart YB, Chaulk CA and Robertson CA.1988. Genetic structure of populations of geographically restricted and widespread species of Astragalus (Fabaceae). AMERICAN JOURNAL OF BOTANY 75: 1114-1119.
Karron JD. 1987. The pollination ecology of co-occurring geographically restricted and widespread species of Astragalus (Fabaceae). BIOLOGICAL CONSERVATION 39: 179-193.
Karron JD. 1987. A comparison of levels of genetic polymorphism and self-compatibility in geographically restricted and widespread plant congeners. EVOLUTIONARY ECOLOGY 1: 47-58.
Mitchell RJ, Starvaggi D, Fitzgerald V, and Karron JD. 2024. The timing of visits by large and small bees differentially affects pollination success in Mimulus ringens. American Journal of Botany, DOI: 10.1002/ajb2.16375 PDF
Shelton WR, Mitchell RJ, Christopher DA, Jack LP and Karron JD. 2023. Among‐individual variation in flowering phenology affects flowering synchrony and mating opportunity. AMERICAN JOURNAL OF BOTANY. doi.org/10.1002/ajb2.16269 Article Link
Christopher DA, Karron JD, Semski WR, Smallwood PA, Trapnell DW, Mitchell RJ. 2021. Selfing rates vary with floral display, pollinator visitation and plant density in natural populations of Mimulus ringens. JOURNAL OF EVOLUTIONARY BIOLOGY https://doi.org/10.1111/jeb.13781 PDF
Karron JD, Christopher DA and Semski WR. 2021. Pollen transport: Illuminating a key mechanism of disassortative pollination. CURRENT BIOLOGY 31: 893-895. PDF
Christopher DA, Mitchell RJ, Karron JD. 2020. Pollination intensity and paternity in flowering
plants, ANNALS OF BOTANY 125: 1–9. PDF
Christopher DA, Mitchell RJ, Trapnell DW, Smallwood PA, Semski WR, Karron JD. 2019. Hermaphroditism promotes mate diversity in flowering plants. AMERICAN JOURNAL OF BOTANY 106: 1131–1136. PDF
Minnaar C, Anderson B, de Jager ML, Karron JD. 2019. Plant-pollinator interactions along the pathway to paternity. ANNALS OF BOTANY PDF
Whitehead MR, Lanfear R, Mitchell RJ, Karron JD. 2018 Plant mating systems often vary widely among populations. FRONTIERS IN ECOLOGY AND EVOLUTION 6:38 PDF
Krauss SL, Phillips RD, Karron JD, Johnson SD, Roberts DG, Hopper SD. 2017. Novel consequences of bird pollination for plant mating. TRENDS IN PLANT SCIENCE 22: 395-410.
Hallett AC, Mitchell RJ, Chamberlain ER, Karron JD. 2017. Pollination success following loss of a frequent pollinator: the role of compensatory visitation by other effective pollinators.
AOB PLANTS 10.1093/aobpla/plx020 PDF
Sorin YB, Mitchell RJ, Trapnell DW, Karron JD. 2016. Effect of pollination and postpollination processes on selfing rate in Mimulus ringens. AMERICAN JOURNAL OF BOTANY 103: 1524-1528.
Mitchell RJ, Wilson WG, Holmquist KG, Karron JD. 2013. Influence of pollen transport dynamics on sire profiles and multiple paternity in flowering plants. PLOS One 8(10) 1-7.
Karron JD, Mitchell RJ. 2012. Effects of floral display size on male and female reproductive success in Mimulus ringens. ANNALS OF BOTANY 109: 563-570
Holmquist KG, Mitchell RJ, Karron JD. 2012. Influence of pollinator grooming on pollen-mediated gene dispersal in Mimulus ringens (Phrymaceae). PLANT SPECIES BIOLOGY 27: 77-85.
Karron JD, Ivey CT, Mitchell RJ, Whitehead MR, Peakall R, Case AL. 2012. New perspectives on the evolution of plant mating systems. ANNALS OF BOTANY 109: 493-503.
Nunziata SO, Karron JD, Mitchell RJ, Lance SL, Jones KL, Trapnell DW. 2012. Characterization of 42 polymorphic microsatellite loci in Mimulus ringens (Phrymaceae) using Illumina sequencing. AMERICAN JOURNAL OF BOTANY 99 (12) e 477-e480.
Medrano M, Requerey R, Karron JD, Herrera CM. 2012. Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the self-outcrossing paradigm in the evolution of mixed mating. PLANT BIOLOGY 14: 801-810.
Flanagan RJ, Mitchell RJ, Karron JD. 2011. Effects of multiple competitors for pollination on bumblebee foraging patterns and Mimulus ringens reproductive success. OIKOS 120: 200-207.
Flanagan RJ, Mitchell RJ, Karron JD. 2010. Increased relative abundance of an invasive
competitor for pollination, Lythrum salicaria, reduces seed number in Mimulus ringens. OECOLOGIA 164: 445-454.
Karron JD, Holmquist KG, Flanagan RJ, Mitchell RJ. 2009. Pollinator visitation patterns strongly influence among-flower variation in selfing rate. ANNALS OF BOTANY 103: 1379-1383.
Flanagan RJ, Mitchell RJ, Knutowski D, Karron JD. 2009. Interspecific pollinator movements
reduce pollen deposition and seed production in Mimulus ringens (Phrymaceae). AMERICAN JOURNAL OF BOTANY 96: 809–815.
Mitchell RJ, Flanagan RJ, Brown BJ, Waser NM, Karron JD. 2009. New frontiers in competition for pollination. ANNALS OF BOTANY 103: 1403–1413.
Karron JD, Mitchell RJ, Bell JM. 2006. Multiple pollinator visits to Mimulus ringens (Phrymaceae) flowers increase mate number and seed set within fruits. AMERICAN JOURNAL OF BOTANY 93: 1306-1312.
Bell JM, Karron JD, Mitchell RJ. 2005. Interspecific competition for pollination lowers seed production and outcrossing in Mimulus ringens. ECOLOGY 86: 776-785.
Mitchell RJ, Karron JD, Holmquist KG, Bell JM. 2005. Patterns of multiple paternity in fruits of Mimulus ringens (Phrymaceae). AMERICAN JOURNAL OF BOTANY 92: 885-890.
Karron JD, Mitchell RJ, Holmquist KG, Bell JM, Funk B. 2004. The influence of floral display size on selfing rates in Mimulus ringens. HEREDITY 92: 242-248.
Mitchell RJ, Karron JD, Holmquist KG, Bell JM. 2004. The influence of Mimulus ringens floral display size on pollinator visitation patterns. FUNCTIONAL ECOLOGY 18: 116-124.
Linhart YB., Ellwood LM, Karron JD, Gehring JL. 2003. Genetic differentiation of dwarf mistletoes Arceuthobium vaginatum and A. americanum on their principal and secondary hosts. INTERNATIONAL JOURNAL OF PLANT SCIENCES 164: 61-69.
Reinartz GE, Karron JD, Phillips RB, Weber JL. 2000. Patterns of microsatellite polymorphism in the range-restricted bonobo (Pan paniscus): considerations for interspecific comparison to chimpanzees (P. troglodytes). Molecular Ecology 9: 315-328.
Karron JD 1998. Genetic consequences of different patterns of distribution and abundance. Chapter 10 in The Biology of Rarity. W. E. Kunin and K. J. Gaston, eds. Chapman & Hall, London, pp. 174-189.
Karron JD, Jackson RT, Thumser NN, † Schlicht SL. 1997. Outcrossing rates of individual Mimulus ringens genets are correlated with anther-stigma separation. HEREDITY 79: 365-370.
Thumser NN, Karron JD, Ficken MS. 1996. Interspecific variation in the calls of Spheniscus penguins. THE WILSON BULLETIN 108: 72-79.
Karron JD, Tucker R, Thumser NN, Reinartz JA. 1995. Comparison of pollinator flight movements
and gene dispersal patterns in Mimulus ringens. HEREDITY 75: 612-617. PDF
Karron JD, Thumser NN, Tucker R, Hessenauer AJ. 1995. The influence of population density on outcrossing rates in Mimulus ringens. HEREDITY 75: 175-180.
Thumser NN, Karron JD. 1994. Patterns of genetic polymorphism in five species of penguins. AUK 111: 1018-1022.
Karron JD, Marshall DL. Effects of environmental variation on fitness of singly and multiply sired progenies of Raphanus sativus (Brassicaceae). AMERICAN JOURNAL OF BOTANY 80: 1407-1412.
Karron JD. 1991. Patterns of genetic variation and breeding systems in rare plantspecies. Chapter 6 in Genetics and Conservation of Rare Plants. D. A. Falk and K. E. Holsinger, eds. Oxford University Press, Oxford.
Karron JD, Marshall, DL. 1990. Fitness consequences of multiple paternity in wild radish,
Raphanus sativus. EVOLUTION 44: 260-268.
Karron JD, Marshall DL, Oliveras DM. 1990. Numbers of sporophytic self-incompatibility alleles
in populations of wild radish. THEORETICAL AND APPLIED GENETICS 79: 457-460.
Karron JD. 1989. Breeding systems and levels of inbreeding depression in geographically restricted and widespread species of Astragalus (Fabaceae). AMERICAN JOURNAL OF BOTANY 76: 331-340.
Karron JD, Linhart YB, Chaulk CA and Robertson CA.1988. Genetic structure of populations of geographically restricted and widespread species of Astragalus (Fabaceae). AMERICAN JOURNAL OF BOTANY 75: 1114-1119.
Karron JD. 1987. The pollination ecology of co-occurring geographically restricted and widespread species of Astragalus (Fabaceae). BIOLOGICAL CONSERVATION 39: 179-193.
Karron JD. 1987. A comparison of levels of genetic polymorphism and self-compatibility in geographically restricted and widespread plant congeners. EVOLUTIONARY ECOLOGY 1: 47-58.
Descriptions of current research projects in the Karron lab may be found on the lab home page.