All Stories

  1. Global agriculture shows limited evidence of a pollinator-driven yield decline to date

    Article • Annals of Botany, August 2026, Oxford University Press (OUP)

    Lawrence Harder

  2. The richness, frequency and relatedness components of mate diversity and mate portfolios

    Article • New Phytologist, July 2026, Wiley

    Lawrence Harder

  3. Manifold limits on seed production by individual flowering plants

    Article • American Journal of Botany, May 2026, Wiley

    Lawrence Harder

  4. Pollination efficiency and the evolution of sex allocation – diminishing returns matter

    Article • New Phytologist, January 2025, Wiley

    Lawrence Harder

  5. An SNP-based approach to estimating the mating and relatedness components of plant mating portfolios

    Article • Botany, January 2025, Canadian Science Publishing

    Lawrence Harder

  6. Beyond pollen:ovule ratios: Evolutionary consequences of pollinator dependence and pollination efficiency for pollen and ovule production in angiosperms

    Article • American Journal of Botany, June 2023, Wiley

    Lawrence Harder

  7. Habitat effects on reproductive phenotype, pollinator behavior, fecundity, and mating outcomes of a bumble bee–pollinated herb

    Article • American Journal of Botany, March 2022, Wiley

    Lawrence Harder

  8. No statistical evidence that honey bees competitively reduced wild bee abundance in the Munich Botanic Garden—a comment on Renner et al. (2021)

    Article • Oecologia, January 2022, Springer Science + Business Media

    Lawrence Harder

  9. Behavioural responses by a bumble bee to competition with a niche‐constructing congener

    Article • Journal of Animal Ecology, December 2021, Wiley

    Lawrence Harder

  10. Modeling flower pigmentation paterns

    Article • ACM Transactions on Graphics, December 2021, ACM (Association for Computing Machinery)

    Lawrence Harder

  11. The influences of progenitor filtering, domestication selection and the boundaries of nature on the domestication of grain crops

    Article • Functional Ecology, June 2021, Wiley

    Lawrence Harder

  12. Does acoustic priming ‘sweeten the pot’ of floral nectar?

    Article • Ecology Letters, June 2020, Wiley

    Lawrence Harder

  13. The nature of interspecific interactions and co‐diversification patterns, as illustrated by the fig microcosm

    Article • New Phytologist, October 2019, Wiley

    Lawrence Harder

  14. The dynamic mosaic phenotypes of flowering plants

    Article • New Phytologist, May 2019, Wiley

    Lawrence Harder

  15. Physical tidepool characteristics affect age- and size-class distributions and site fidelity in tidepool sculpin (Oligocottus maculosus)

    Article • Canadian Journal of Zoology, December 2018, Canadian Science Publishing

    Lawrence Harder

  16. Mating consequences of contrasting hermaphroditic plant sexual systems

    Article • Evolution, August 2018, Wiley

    Lawrence Harder

  17. The costs and benefits of pollinator dependence: empirically based simulations predict raspberry fruit quality

    Article • Ecological Applications, April 2018, Wiley

    Lawrence Harder

  18. The Ecology of Mating and Its Evolutionary Consequences in Seed Plants

    Article • Annual Review of Ecology Evolution and Systematics, November 2017, Annual Reviews

    Lawrence Harder

  19. Inflorescence characteristics as function-valued traits: Analysis of heritability and selection on architectural effects

    Article • Journal of Systematics and Evolution, June 2017, Wiley

    Lawrence Harder

  20. The mating consequences of rewarding vs. deceptive pollination systems: Is there a quantity-quality trade-off?

    Article • Ecological Monographs, November 2016, Wiley

    Lawrence Harder

  21. Flower orientation influences the consistency of bumblebee movement within inflorescences

    Article • Annals of Botany, July 2016, Oxford University Press (OUP)

    Lawrence Harder

  22. Non-equilibrium dynamics and floral trait interactions shape extant angiosperm diversity

    Article • Proceedings of the Royal Society B Biological Sciences, May 2016, Royal Society Publishing

    Lawrence Harder, Professor William Scott Armbruster

  23. Lunar Phase Modulates Circadian Gene Expression Cycles in the Broadcast Spawning Coral Acropora millepora

    Article • Biological Bulletin, April 2016, University of Chicago Press

    Lawrence Harder

  24. The population ecology of male gametophytes: the link between pollination and seed production

    Article • Ecology Letters, March 2016, Wiley

    Lawrence Harder

  25. Diverse ecological relations of male gametophyte populations in stylar environments

    Article • American Journal of Botany, March 2016, Wiley

    Lawrence Harder

  26. Evolutionary and Ecological Consequences of Multiscale Variation in Pollen Receipt for Seed Production

    Article • The American Naturalist, January 2015, University of Chicago Press

    Professor Sebastian J Schreiber, Lawrence Harder

  27. Using a “time machine” to test for local adaptation of aquatic microbes to temporal and spatial environmental variation

    Article • Evolution, November 2014, Wiley

    Lawrence Harder

  28. The consequences of demand-driven seed provisioning for sexual differences in reproductive investment inThalictrum occidentale(Ranunculaceae)

    Article • Journal of Ecology, November 2014, Wiley

    Lawrence Harder

  29. Consequences of Multiple Inflorescences and Clonality for Pollinator Behavior and Plant Mating

    Article • The American Naturalist, November 2014, University of Chicago Press

    Lawrence Harder

  30. When mutualism goes bad: density‐dependent impacts of introduced bees on plant reproduction

    Article • New Phytologist, July 2014, Wiley

    Dr Marcelo A Aizen, Lawrence Harder

  31. Erratum for the Report: "Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance" by L. A. Garibaldi, I. Steffan-Dewenter, R. Winfree, M. A. Aizen, R. Bommarco, S. A. Cunningham, C. Kremen, L. G. Carvalheiro, L. D. Harder, O. Afik...

    Article • Science, May 2014, American Association for the Advancement of Science

    Lawrence Harder

  32. The evolution of floral nectaries in Disa (Orchidaceae: Disinae): recapitulation or diversifying innovation?

    Article • Annals of Botany, August 2013, Oxford University Press (OUP)

    Lawrence Harder

  33. Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance

    Article • Science, February 2013, American Association for the Advancement of Science

    Dr Ignasi Bartomeus, Lawrence Harder

  34. Demand-driven resource investment in annual seed production by a perennial angiosperm precludes resource limitation

    Article • Ecology, January 2013, Wiley

    Lawrence Harder

  35. The interplay between inflorescence development and function as the crucible of architectural diversity

    Article • Annals of Botany, December 2012, Oxford University Press (OUP)

    Lawrence Harder

  36. Sterile flowers increase pollinator attraction and promote female success in the Mediterranean herb Leopoldia comosa

    Article • Annals of Botany, November 2012, Oxford University Press (OUP)

    Lawrence Harder

  37. Phenological associations of within- and among-plant variation in gender with floral morphology and integration in protandrousDelphinium glaucum

    Article • Journal of Ecology, April 2012, Wiley

    Lawrence Harder

  38. Floral traits mediate the vulnerability of aloes to pollen theft and inefficient pollination by bees

    Article • Annals of Botany, January 2012, Oxford University Press (OUP)

    Lawrence Harder

  39. HOW DEPRESSED? ESTIMATES OF INBREEDING EFFECTS DURING SEED DEVELOPMENT DEPEND ON REPRODUCTIVE CONDITIONS

    Article • Evolution, December 2011, Wiley

    Lawrence Harder

  40. Bumble-bee learning selects for both early and long flowering in food-deceptive plants

    Article • Proceedings of the Royal Society B Biological Sciences, November 2011, Royal Society Publishing

    Lawrence Harder

  41. Effects of defoliation and shading on the physiological cost of reproduction in silky locoweed Oxytropis sericea

    Article • Annals of Botany, October 2011, Oxford University Press (OUP)

    Lawrence Harder

  42. Global growth and stability of agricultural yield decrease with pollinator dependence

    Article • Proceedings of the National Academy of Sciences, March 2011, Proceedings of the National Academy of Sciences

    Lawrence Harder

  43. Mammal pollinators lured by the scent of a parasitic plant

    Article • Proceedings of the Royal Society B Biological Sciences, January 2011, Royal Society Publishing

    Lawrence Harder

  44. Native pollen thieves reduce the reproductive success of a hermaphroditic plant, Aloe maculata

    Article • Ecology, June 2010, Wiley

    Lawrence Harder

  45. Floral adaptation and diversification under pollen limitation

    Article • Philosophical Transactions of the Royal Society B Biological Sciences, February 2010, Royal Society Publishing

    Lawrence Harder

  46. Geographic variation in the growth of domesticated honey-bee stocks

    Article • Communicative & Integrative Biology, November 2009, Taylor & Francis

    Lawrence Harder

  47. Variation in Pollination: Causes and Consequences for Plant Reproduction

    Article • The American Naturalist, September 2009, University of Chicago Press

    Lawrence Harder

  48. Darwin's beautiful contrivances: evolutionary and functional evidence for floral adaptation

    Article • New Phytologist, August 2009, Wiley

    Lawrence Harder

  49. The Global Stock of Domesticated Honey Bees Is Growing Slower Than Agricultural Demand for Pollination

    Article • Current Biology, June 2009, Elsevier

    Lawrence Harder

  50. Questions about floral (dis)integration

    Article • New Phytologist, May 2009, Wiley

    Lawrence Harder

  51. Consumptive emasculation: the ecological and evolutionary consequences of pollen theft

    Article • Biological Reviews, May 2009, Wiley

    Lawrence Harder

  52. Aloe inconspicua: The first record of an exclusively insect-pollinated aloe

    Article • South African Journal of Botany, November 2008, Elsevier

    Lawrence Harder

  53. Function and Evolution of Aggregated Pollen in Angiosperms

    Article • International Journal of Plant Sciences, January 2008, University of Chicago Press

    Lawrence Harder

  54. EFFECTS OF REPRODUCTIVE COMPENSATION, GAMETE DISCOUNTING AND REPRODUCTIVE ASSURANCE ON MATING-SYSTEM DIVERSITY IN HERMAPHRODITES

    Article • Evolution, October 2007, Wiley

    Lawrence Harder

  55. Evolution and Development of Inflorescence Architectures

    Article • Science, June 2007, American Association for the Advancement of Science

    Lawrence Harder

  56. Variation in ovule and seed size and associated size-number trade-offs in angiosperms

    Article • American Journal of Botany, May 2007, Wiley

    Lawrence Harder

  57. EXPANDING THE LIMITS OF THE POLLEN-LIMITATION CONCEPT: EFFECTS OF POLLEN QUANTITY AND QUALITY

    Article • Ecology, February 2007, Wiley

    Lawrence Harder

  58. The size of individual Delphinium flowers and the opportunity for geitonogamous pollination

    Article • Functional Ecology, December 2006, Wiley

    Lawrence Harder

  59. Manipulation of Bee Behavior by Inflorescence Architecture and Its Consequences for Plant Mating

    Article • The American Naturalist, April 2006, University of Chicago Press

    Lawrence Harder

  60. Adaptive plasticity of floral display size in animal-pollinated plants

    Article • Proceedings of the Royal Society B Biological Sciences, December 2005, Royal Society Publishing

    Lawrence Harder

  61. Functional associations of floret and inflorescence traits among grass species

    Article • American Journal of Botany, November 2005, Wiley

    Lawrence Harder

  62. Pollen fates and the limits on male reproductive success in an orchid population

    Article • Biological Journal of the Linnean Society, September 2005, Oxford University Press (OUP)

    Lawrence Harder

  63. New strategies for increasing heterozygosity in crops: Vicia faba mating system as a study case

    Article • Euphytica, July 2005, Springer Science + Business Media

    Lawrence Harder

  64. Floral and inflorescence effects on variation in pollen removal and seed production among six legume species

    Article • Functional Ecology, April 2005, Wiley

    Lawrence Harder

  65. New strategies for increasing heterozygosity in crops: Vicia faba mating system as a study case

    Article • Euphytica, January 2005, Springer Science + Business Media

    Lawrence Harder

  66. Heteromorphic Incompatibility and Efficiency of Pollination in Two Distylous Pentanisia Species (Rubiaceae)

    Article • Annals of Botany, December 2004, Oxford University Press (OUP)

    Lawrence Harder

  67. Beyond floricentrism: The pollination function of inflorescences

    Article • Plant Species Biology, December 2004, Wiley

    Lawrence Harder

  68. Inflorescence architecture and wind pollination in six grass species

    Article • Functional Ecology, December 2004, Wiley

    Lawrence Harder

  69. The evolution of polymorphic sexual systems in daffodils (Narcissus)

    Article • New Phytologist, September 2004, Wiley

    Lawrence Harder

  70. The functional significance of synchronous protandry in Alstroemeria aurea

    Article • Functional Ecology, June 2004, Wiley

    Lawrence Harder

  71. CORRELATED EVOLUTION OF FLORAL MORPHOLOGY AND MATING-TYPE FREQUENCIES IN A SEXUALLY POLYMORPHIC PLANT

    Article • Evolution, May 2004, Wiley

    Lawrence Harder

  72. Reproductive Uncertainty and the Relative Competitiveness of Simultaneous Hermaphroditism versus Dioecy

    Article • The American Naturalist, August 2003, University of Chicago Press

    Lawrence Harder

  73. Direct and indirect responses to selection on pollen size in Brassica rapa L.

    Article • Journal of Evolutionary Biology, May 2001, Wiley

    Lawrence Harder

  74. THE RESPONSE OF LARVAL GROWTH RATE TO TEMPERATURE IN THREE SPECIES OF COENAGRIONID DRAGONFLIES WITH SOME COMMENTS ONLESTES DISJUNCTUS(ODONATA: COENAGRIONIDAE, LESTIDAE)

    Article • International Journal of Odonatology, November 2000, Taylor & Francis

    Lawrence Harder

  75. The evolution of staminodes in angiosperms: patterns of stamen reduction, loss, and functional re-invention

    Article • American Journal of Botany, October 2000, Wiley

    Lawrence Harder

  76. The mating consequences of sexual segregation within inflorescences of flowering plants

    Article • Proceedings of the Royal Society B Biological Sciences, February 2000, Royal Society Publishing

    Lawrence Harder

  77. Consequences of preformation for dynamic resource allocation by a carnivorous herb, Pinguicula vulgaris (Lentibulariaceae)

    Article • American Journal of Botany, August 1999, Wiley

    Lawrence Harder

  78. THEORETICAL CONSEQUENCES OF HETEROGENEOUS TRANSPORT CONDITIONS FOR POLLEN DISPERSAL BY ANIMALS

    Article • Ecology, December 1998, Wiley

    Lawrence Harder

  79. A Clarification of Pollen Discounting and Its Joint Effects with Inbreeding Depression on Mating System Evolution

    Article • The American Naturalist, November 1998, University of Chicago Press

    Lawrence Harder

  80. Pollen-size comparisons among animal-pollinated angiosperms with different pollination characteristics

    Article • Biological Journal of the Linnean Society, August 1998, Oxford University Press (OUP)

    Lawrence Harder

  81. Foraging currencies for non-energetic resources: pollen collection by bumblebees

    Article • Animal Behaviour, October 1997, Elsevier

    Lawrence Harder

  82. Economic motivation for plant species preferences of pollen-collecting bumble bees

    Article • Ecological Entomology, May 1997, Wiley

    Lawrence Harder

  83. Erratum: Effect of Pollination Success on Floral Longevity in the Orchid Calypso bulbosa (Orchidaceae)

    Article • American Journal of Botany, October 1996, Wiley

    Lawrence Harder

  84. The comparative biology of pollination and mating in flowering plants

    Article • Philosophical Transactions of the Royal Society B Biological Sciences, September 1996, Royal Society Publishing

    Lawrence Harder

  85. Development of aquatic insect eggs in relation to temperature and strategies for dealing with different thermal environments

    Article • Biological Journal of the Linnean Society, June 1996, Oxford University Press (OUP)

    Lawrence Harder

  86. Size-Dependent Resource Allocation and Costs of Reproduction in Pinguicula Vulgaris (Lentibulariaceae)

    Article • Journal of Ecology, April 1996, JSTOR

    Lawrence Harder

  87. Ecology and evolution of plant mating

    Article • Trends in Ecology & Evolution, February 1996, Elsevier

    Lawrence Harder

  88. Heritable allometric variation in bumble bees: opportunities for colony-level selection of foraging ability

    Article • Journal of Evolutionary Biology, November 1995, Wiley

    Lawrence Harder

  89. Effect of Pollination Success on Floral Longevity in the Orchid Calypso bulbosa (Orchidaceae)

    Article • American Journal of Botany, September 1995, Wiley

    Lawrence Harder

  90. Mating cost of large floral displays in hermaphrodite plants

    Article • Nature, February 1995, Springer Science + Business Media

    Lawrence Harder

  91. Size-Number Trade-Offs and Pollen Production by Papilionaceous Legumes

    Article • American Journal of Botany, February 1995, Wiley

    Lawrence Harder

  92. Floral evolution and male reproductive success: Optimal dispensing schedules for pollen dispersal by animal-pollinated plants

    Article • Evolutionary Ecology, September 1994, Springer Science + Business Media

    Lawrence Harder

  93. Effects of Flower Number and Position on Self-Fertilization in Experimental Populations of Eichhornia paniculata (Pontederiaceae)

    Article • Functional Ecology, August 1994, JSTOR

    Lawrence Harder

  94. The Functional Significance of Poricidal Anthers and Buzz Pollination: Controlled Pollen Removal From Dodecatheon

    Article • Functional Ecology, August 1994, JSTOR

    Lawrence Harder

  95. Pollen load, capsule weight, and seed production in three orchid species

    Article • Canadian Journal of Botany, February 1994, Canadian Science Publishing

    Lawrence Harder

  96. Pollen Removal From Tristylous Pontederia Cordata: Effects of Anther Position and Pollinator Specialization

    Article • Ecology, June 1993, Wiley

    Lawrence Harder

  97. Unilateral incompatibility and the effects of interspecific pollination for Erythronium americanum and Erythronium albidum (Liliaceae)

    Article • Canadian Journal of Botany, February 1993, Canadian Science Publishing

    Lawrence Harder

  98. Floral variation in Eichhornia paniculata (Spreng.) Solms (Pontederiaceae) II. Effects of development and environment on the formation of selfing flowers

    Article • Journal of Evolutionary Biology, January 1992, Wiley

    Lawrence Harder

  99. The Energy Cost of Bee Pollination for Pontederia cordata (Pontederiaceae)

    Article • Functional Ecology, January 1992, JSTOR

    Lawrence Harder

  100. Behavioral responses by bumble bees to variation in pollen availability

    Article • Oecologia, November 1990, Springer Science + Business Media

    Lawrence Harder

  101. Pollen Removal by Bumble Bees and Its Implications for Pollen Dispersal

    Article • Ecology, June 1990, Wiley

    Lawrence Harder

  102. An Evaluation of the Physiological and Evolutionary Influences of Inflorescence Size and Flower Depth on Nectar Production

    Article • Functional Ecology, January 1990, JSTOR

    Lawrence Harder

  103. Evolutionary Options for Maximizing Pollen Dispersal of Animal-Pollinated Plants

    Article • The American Naturalist, March 1989, University of Chicago Press

    Lawrence Harder

  104. Choice of Individual Flowers By Bumble Bees: Interaction of Morphology, Time and Energy

    Article • Behaviour, January 1988, Brill

    Lawrence Harder

  105. Response of traplining bumble bees to competition experiments: shifts in feeding location and efficiency

    Article • Oecologia, January 1987, Springer Science + Business Media

    Lawrence Harder

  106. Effects of nectar concentration and flower depth on flower handling efficiency of bumble bees

    Article • Oecologia, May 1986, Springer Science + Business Media

    Lawrence Harder

  107. Influences on the density and dispersion of bumble bee nests (Hymenoptera: Apidae)

    Article • Ecography, May 1986, Wiley

    Lawrence Harder

  108. Sexual reproduction and variation in floral morphology in an ephemeral vernal lily, Eyythronium americanum

    Article • Oecologia, September 1985, Springer Science + Business Media

    Lawrence Harder

  109. Morphology as a Predictor of Flower Choice by Bumble Bees

    Article • Ecology, February 1985, Wiley

    Lawrence Harder

  110. What do foraging hummingbirds maximize?

    Article • Oecologia, January 1984, Springer Science + Business Media

    Lawrence Harder

  111. Flower handling efficiency of bumble bees: morphological aspects of probing time

    Article • Oecologia, March 1983, Springer Science + Business Media

    Lawrence Harder