Publications
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Size-dependent sex allocation within flowers of the annual herb Clarkia unguiculata (Onagraceae): ontogenetic and among-plant variation." American Journal of Botany 88 (2001): 819-831.
"Status of pollinators in North America." Nature 450 (2007): 1162-1163.
"Plant Ecology: Seeds Ecology, Biogeography, and Evolution of Dormancy and Germination CC Baskin and JM Baskin." SCIENCE-NEW YORK THEN WASHINGTON- (1999): 334.
"CBS PRESIDENT’S REPORT FOR VOLUME 67." Madrono 67, no. 4 (2021): 227-228.
"Fruits of Wetherellia and Palaeowetherellia (? Euphorbiaceae) from Eocene sediments in Virginia and Maryland." Brittonia 34 (1982): 300-333.
"The quantitative genetics of life history and fitness components in Raphanus raphanistrum L.(Brassicaceae): ecological and evolutionary consequences of seed-weight variation." The American Naturalist 130 (1987): 891-914.
"Physiological performance in Clarkia sister taxa with contrasting mating systems: do early-flowering autogamous taxa avoid water stress relative to their pollinator-dependent counterparts?" International Journal of Plant Sciences 171 (2010): 1029-1047.
"Fruit size and shape: allometry at different taxonomic levels in bird-dispersed plants." Evolutionary Ecology 7 (1993): 556-575.
"Fruits of their labour." Nature 450 (2007): 1162.
"Family mean correlations among fitness components in wild radish: controlling for maternal effects on seed weight." Canadian journal of botany 67 (1989): 1890-1897.
"Stability of pollen–ovule ratios in pollinator-dependent versus autogamous Clarkia sister taxa: testing evolutionary predictions." New Phytologist 183 (2009): 630-648.
"Seed mass of Indiana Dune genera and families: taxonomic and ecological correlates." Evolutionary Ecology 4 (1990): 326-357.
"Arenaria Paludicola (marsh Sandwort: Caryophyllaceae) and Rorippa Gambelii (Gambel's Watercress: Brassicaceae) in Black Lake Canyon and the Oso Flaco Lake Region: Field Observations, Greenhouse Cultivation, Molecular Genetic Variation, and Trial Reintrodu. Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, 2001.
Genetic variation in life-history traits: heritability estimates within and genetic differentiation among populations." Life history evolution in plants (1999): 87-171.
"The Heavy Metal-Tolerant Flora of Southcentral Africa: A Multidisciplinary Approach. Sigma Xi, The Scientific Research Society, 1987.
CBS President's Report for Volume 66." Madrono 66, no. 4 (2019).
"Covariation among floral traits in Spergularia marina (Caryophyllaceae): geographic and temporal variation in phenotypic and among-family correlations." Journal of Evolutionary Biology 9 (1996): 993-1015.
"Ecological, Taxonomic, and Life History Correlates of Seed Mass Among Indiana Dune Angiosperms: Ecological Archives M059-001." Ecological Monographs 59 (1989): 153-175.
"Rainforest plants protect their investments." Trends in ecology & evolution 13 (1998): 471-473.
"Evolutionary significance of variation." (2001).
"Contrasting variation within and covariation between gender-related traits in autogamous versus outcrossing species: alternative evolutionary predictions." Evolutionary Ecology 12 (1998): 403-425.
"CBS President's Report for Volume 64." Madroño 64 (2017): 154-155.
"Context-dependent concordance between physiological divergence and phenotypic selection in sister taxa with contrasting phenology and mating systems." American Journal of Botany (2022).
"Geographic variation in flower size in wild radish: the potential role of pollinators in population differentiation." Adaptive genetic variation in the wild. Oxford University Press, New York (2000): 157-186.
"Fertilization dynamics and parental effects upon fruit development in Raphanus raphanistrum: consequences for seed size variation." American Journal of Botany 73 (1986): 500-511.
"Plant Population Genetics as a Research Tool." Evolution 45 (1991): 1536-1538.
"Planting density influences the expression of genetic variation in seed mass in wild radish (Raphanus sativus L.: Brassicaceae)." American Journal of Botany 79 (1992): 1185-1193.
"Geographic Variation in." Adaptive Genetic Variation in the Wild (2000): 157.
"Mating system and historical climate conditions affect population mean seed mass: Evidence for adaptation and a new component of the selfing syndrome in Clarkia." Journal of Ecology DOI: 10.1111/1365-2745.13338 (2019).
"Floral trait variation in Spergularia marina (Caryophyllaceae): ontogenetic, maternal family, and population effects." Heredity 77 (1996): 269.
"Environmental, genetic, and seed mass effects on winged seed production in the heteromorphic Spergularia marina (Caryophyllaceae)." Functional Ecology 17 (2003): 637-650.
"Parental effects on progeny phenotype in plants: distinguishing genetic and environmental causes." Evolution 50 (1996): 44-53.
"Nature and causes of variation." (2001).
"Life history, floral development, and mating system in Clarkia xantiana (Onagraceae): do floral and whole-plant rates of development evolve independently?" American Journal of Botany 91 (2004): 2041-2050.
"Constancy of population parameters for life history and floral traits in Raphanus sativus L. Norms of reaction and the nature of genotype by environment interactions." Heredity 67 (1991): 143.
"Phenological sensitivities to climate are similar in two Clarkia congeners: indirect evidence for facilitation, convergence, niche conservatism, or genetic constraints." Madroño 68, no. 4 (2021): 388-405.
"Evolution of mating system and the genetic covariance between male and female investment in Clarkia (Onagraceae): selfing opposes the evolution of trade-offs." Evolution 61 (2007): 83-98.
"Constancy of population parameters for life-history and floral traits in Raphanus sativus L. II. Effects of planting density on phenotype and heritability estimates." Evolution 45 (1991): 1888-1907.
"Seeds-Ecology, biogeography, and evolution of dormancy and germination." Science 283 (1999): 334.
" "Winning in style: Longer styles receive more pollen, but style length does not affect pollen attrition in wild Clarkia populations." American Journal of Botany 103 (2016): 408-422.
"Floral traits influence the opportunity for selection among male gametophytes: independent and combined effects of style length and petal area." American Journal of Botany 106, no. 5 (2019): 744-753.
"Seasonal changes in components of male and female reproductive success in Raphanus sativus L.(Brassicaceae)." Oecologia 81 (1989): 345-353.
"Effects of nutrient availability on primary sexual traits and their response to selection in Spergularia marina (Caryophyllaceae)." Journal of evolutionary biology 16 (2003): 767-778.
"Responses of floral traits to selection on primary sexual investment in Spergularia marina: the battle between the sexes." Evolution 53 (1999): 717-731.
"Flowering date of taxonomic families predicts phenological sensitivity to temperature: implications for forecasting the effects of climate change on unstudied taxa." American Journal of Botany 100 (2013): 1381-1397.
"Maternal investment and male reproductive success in angiosperms: parent-offspring conflict or sexual selection?" Biological Journal of the Linnean Society 30 (1987): 115-133.
"2018 CBS Banquet at UC Davis." Madroño 65 (2018): 65.
"California Botanical Society President's Report for 2020." Madrono 67, no. 4 (2020): 227-228.
"Temporal instability of genetic components of floral trait variation: maternal family and population effects in Spergularia marina (Caryophyllaceae)." Evolution 50 (1996): 2509-2515.
"Parental effects on seed development and seed yield in Raphanus raphanistrum: implications for natural and sexual selection." Evolution 41 (1987): 355-371.
" "Variation and covariation among floral traits within and among four species of northern European Primula (Primulaceae)." American Journal of Botany 80 (1993): 474-485.
"Species-specific phenological responses to winter temperature and precipitation in a water-limited ecosystem." Ecosphere 6 (2015): 1-27.
"Divergence in pollen performance between Clarkia sister species with contrasting mating systems supports predictions of sexual selection." Evolution 72 (2018): 453-472.
"Alternative approaches to the analysis of comparative data: compare and contrast." American Journal of Botany 85 (1998): 1194-1199.
"The joint evolution of mating system and pollen performance: predictions regarding male gametophytic evolution in selfers vs. outcrossers." Perspectives in Plant Ecology, Evolution and Systematics 12 (2010): 31-41.
"Historical changes in flowering phenology are governed by temperature x precipitation interactions in a widespread perennial herb in western North America." New Phytologist 210 (2016): 157-167.
"Allozyme variation in Ulmus species from France: analysis of differentiation." Heredity 78 (1997): 12.
"Relationship between genetic structure and seed and pollen dispersal in the endangered orchid Spiranthes spiralis." New Phytologist 157 (2003): 677-687.
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