Helen Alexander

Dendy, S. P., Tong, B. Alexander, H. M., Fay, P. A., Murray, L. Xing, Y. & Garrett, K. A. (2017). A long-term study of burning effects on a plant pathogen in tallgrass prairie. Plant Pathology, 66, 1308-1317. DOI:

Eager, E. A., Pilson, D. Alexander, H. M., & Tenhumberg, B. (2017). Assessing the Influence of Temporal Autocorrelations on the Population Dynamics of a Disturbance Specialist Plant Population in a Random Environment. The American Naturalist, 190, 570-583. DOI:10.1086/692911 http://dx.doi.org/10.1086/692911

Chang, H. Alexander, H. M., Mutegi, E. & Snow, A. A. (2017). Habitat restoration and native grass conservation: a case study of Switchgrass (Panicum virgatum). Restoration Ecology. DOI:10.1111/rec.12599

Jaksetic, N. Foster, B. L., Bever, J. D., Schwarting, J. & Alexander, H. M. (2017). Sowing density effects and patterns of colonization in a prairie restoration. Restoration Ecology. DOI:10.1111/rec.12550

Alexander, H. M., Bruns, E. Schebor, H. & Malmstrom, C. M. (2017). Crop-associated virus infection in a native perennial grass: reduction in plant fitness and dynamic patterns of virus detection. Journal of Ecology, 105, 1021-1031.

Malmstrom, C. M., Bigelow, P. Trębicki, P. Busch, A. K., Friel, C. Cole, E. Abdel-Azim, H. Phillippo, C. & Alexander, H. M. (2017). Crop-associated virus reduces the rooting depth of non-crop perennial native grass more than non-crop-associated virus with known viral suppressor of RNA silencing (VSR). Virus research. DOI:10.1016/j.virusres.2017.07.006

Pace, B. A., Alexander, H. M., Emry, D. J., & Mercer, K. L. (2016). Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions. Journal of visualized experiments : JoVE,(117). DOI:10.3791/54663

Malmstrom, C. M., & Alexander, H. M. (2016). Effects of crop viruses on wild plants. Current opinion in virology, 19, 30-6. DOI:10.1016/j.coviro.2016.06.008

Bever, J. D., Mangan, S. A., & Alexander, H. M. (2015). Maintenance of Plant Species Diversity by Pathogens. Annual Review of Ecology, Evolution, and Systematics, 46, 305-325. DOI:10.1146/annurev-ecolsys-112414-054306

Kost, M. A., Alexander, H. M., Emry, D. J., & Mercer, K. L. (2015). Life history traits and phenotypic selection among sunflower crop-wild hybrids and their wild counterpart: implications for crop allele introgression. EVOLUTIONARY APPLICATIONS, 8(5), 510-524. DOI:10.1111/eva.12261

Alexander, H. M. (2015). ECOLOGY Shared ancestry predicts disease levels. NATURE, 520(7548), 446-447.

Pace, B. A., Alexander, H. M., Emry, J. D., & Mercer, K. L. (2015). Seed fates in crop-wild hybrid sunflower: crop allele and maternal effects. EVOLUTIONARY APPLICATIONS, 8(2), 121-132. DOI:10.1111/eva.12236

Roy, B. A., Alexander, H. M., Davidson, J. Campbell, F. T., Burdon, J. J., Sniezko, R. & Brasier, C. (2014). Increasing forest loss worldwide from invasive pests requires new trade regulations. FRONTIERS IN ECOLOGY AND THE ENVIRONMENT, 12(8), 457-465. DOI:10.1890/130240

Alexander, H. M., Emry, D. J., Pace, B. A., Kost, M. A., Sparks, K. A., & Mercer, K. L. (2014). ROLES OF MATERNAL EFFECTS AND NUCLEAR GENETIC COMPOSITION CHANGE ACROSS THE LIFE CYCLE OF CROP-WILD HYBRIDS . AMERICAN JOURNAL OF BOTANY, 101(7), 1176-1188. DOI:10.3732/ajb.1400088

Alexander, H. M., Mauck, K. E., Whitfield, A. E., Garrett, K. A., & Malmstrom, C. M. (2014). Plant-virus interactions and the agro-ecological interface. EUROPEAN JOURNAL OF PLANT PATHOLOGY, 138(3, SI), 529-547. DOI:10.1007/s10658-013-0317-1

Mercer, K. L., Emry, D. J., Snow, A. A., Kost, M. A., Pace, B. A., & Alexander, H. M. (2014). Fitness of crop-wild hybrid sunflower under competitive conditions: implications for crop-to-wild introgression. PloS one, 9(10), e109001. DOI:10.1371/journal.pone.0109001

Alexander, H. M. (2012). An overview of ecological and evolutionary research on disease in natural systems: an annotated reference list. In , Gen. Tech. Rep. PSW-GTR-240. Proceedings of the fourth international workshop on the genetics of host-parasite interactions in forestry: Disease and insect resistance in forest trees (pp. 97-102). Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. http://www.fs.fed.us/psw/publications/documents/psw_gtr240/psw_gtr240.pdf

Alexander, H. M., Reed, A. W., Kettle, W. D., Slade, N. A., Bodbyl-Roels, S. A., Collins, C. D., & Salisbury, V. (2012). Detection and plant monitoring programs: lessons from an intensive survey of Asclepias meadii with five observers. PLoS ONE, 7(12), e52762. DOI:10.1371/journal.pone.0052762 http://hdl.handle.net/1808/13354

Alexander, H. M., Foster, B. L., Ballantyne, F. Collins, C. D., Antonovics, J. & Holt, R. D. (2012). Metapopulations and metacommunities: combining spatial and temporal perspectives in plant ecology. Journal of Ecology, 100, 88-103.

Moore, C. T., Fonnesbeck, C. J., Shea, K. Lah, K. J., McKenzie, P. M., Ball, L. C., Runge, M. C., & Alexander, H. M. (2011). An adaptive decision framework for the conservation of a threatened plant. Journal of Fish and Wildlife Management , 2(2), 247-261. DOI:10.3996/012011-JFWM-007 http://hdl.handle.net/1808/13193

Begay, B. Alexander, H. M., & Questad, E. (2011). Effect of mid-summer haying on growth and reproduction in prairie forbs. Transactions of the Kansas Academy of Science, 114, 108-114.

Emry, D. J., Alexander, H. M., & Tourtellot, M. (2011). Modeling the local spread of invasive plants: importance of including spatial distribution and detectability in management plans. Journal of Applied Ecology, 48, 1391-1400.

Mercer, K. L., Alexander, H. M., & Snow, A. A. (2011). Selection on seedling emergence timing and size in an annual plant (common sunflower, Helianthus annuus (Asteraceae)). American Journal of Botany, 98, 975-985. DOI:10.3732/ajb.1000408 http://hdl.handle.net/1808/13191

Finch, D. & Alexander, H. M. (2011). Variation in plant traits and disease levels across a woodland/grassland ecotone. American Midland Naturalist, 166, 309-324.

Alexander, H. M. (2010). Disease in natural plant populations, communities, and ecosystems: insights into ecological and evolutionary processes. Plant Disease, 94, 492-503. DOI:10.1094/PDIS-94-5-0492 http://hdl.handle.net/1808/15195

Alexander, H. M., Slade, N. Kettle, W. D., Pittman, G. L., & Reed, A. W. (2009). Detection, survival rates, and dynamics of a cryptic plant, Asclepias meadii: applications of mark-recapture models to long-term monitoring studies. Journal of Ecology, 97, 267-276.

Alexander, H. M., Pilson, D. Moody-Weis, J. & Slade, N. A. (2009). Geographic variation in dynamics of an annual plant with a seed bank. Journal of Ecology, 97, 1390-1400.

Tarr, D. E., & Alexander, H. M. (2009). TIR-NBS-LRR genes are rare in monocots: evidence from diverse monocot orders. BMS Research Notes, 2, 197. DOI:10.1186/1756-0500-2-197 http://hdl.handle.net/1808/12908

Moody-Weis, J. Antonovics, J. Alexander, H. M., & Pilson, D. (2008). Predicting local colonization and extinction dynamics from coarser-scale surveys. Ecography, 31, 61-72.

Alexander, H. M., Price, S. Houser, R. Finch, D. & Tourtellot, M. (2007). Is there reduction in disease and predispersal seed predation at the border of a host plant’s range? – field and herbarium studies of Carex blanda. Journal of Ecology, 95, 446-457. http://hdl.handle.net/1808/1507

Moody-Weis, J. & Alexander, H. M. (2007). The mechanisms and consequences of seed bank formation in wild sunflowers (Helianthus annuus). Journal of Ecology, 95, 851-864.

Grman, E. & Alexander, H. M. (2005). Factors limiting fruit production in Asclepias meadii in Northeastern Kansas. American Midland Naturalist, 153, 245-256.

Thrall, P. H., Barrett, L. G., Burdon, J. J., & Alexander, H. M. (2005). Variation in pathogen aggressiveness within a metapopulation of the Cakile maritime-Alternaria brassicicola host-pathogen association. Plant Pathology, 54, 265-274.

Garrett, K. A., Dendy, S. P., Power, A. G., Blaisdell, G. K., Alexander, H. M., & McCarron, J. K. (2004). Barley yellow dwarf luteovirus (BYDV) in natural populations of dominant tallgrass prairie species. Plant Disease, 88, 574. DOI:10.1094/PDIS.2004.88.5.574B http://hdl.handle.net/1808/15194

Pilson, D. Snow, A. A., Rieseberg, L. H., & Alexander, H. M. (2003). Effects of a Bacillus thuringiensis (Bt) transgene on the fecundity and abundance of weeds: a case study of sunflower. In Ecological Impact of GMO Dissemination in Agro-Ecosystems. Proceedings of an OECD Workshop in Grossrssbach, Austria, Sept. 27-28 2002 (pp. 173-189). Facultas Verlags- und Buchhandels AG.

Slade, N. A., Alexander, H. M., & Kettle, W. D. (2003). Estimation of population size and probabilities of survival and detection in a population of Mead’s milkweed. Ecology, 84, 791-797. DOI:10.1890/0012-9658(2003)084[0791:EOPSAP]2.0.CO;2 http://hdl.handle.net/1808/15189

Alexander, H. M., & Schrag, A. M. (2003). Role of soil seed banks and newly dispersed seeds in population dynamics of the annual sunflower, Helianthus annuus. Journal of Ecology, 91, 987-998.

Snow, A. A., Pilson, D. Rieseberg, L. H., & Alexander, H. M. (2002). Ecological effects of pest resistance genes that disperse into weed populations. In Proceedings of the 7th International Symposium on The Biosafety of Genetically Modified Organisms, October 2002 Beijing. http://www.worldbiosafety.net/

Pilson, D. Snow, A. A., Rieseberg, L. H., & Alexander, H. M. (2002). Fitness and population effects of gene flow from transgenic sunflower to wild Helianthus annuus. In Proceedings of a Workshop on the Ecological Effects of Transgenic Crops, March 2002, Columbus, OH. http://www.biosci.ohio-state.edu/~lspencer/gene_flow.htm

Cummings, C. L., Alexander, H. M., Snow, A. A., Rieseberg, L. H., Kim, M. J., & Culley, T. M. (2002). Fecundity selection in a sunflower crop-wild study: can ecological data predict crop allele changes? Ecological Applications, 12(6), 1661-1671. DOI:10.1890/1051-0761(2002)012[1661:FSIASC]2.0.CO;2 http://hdl.handle.net/1808/15186

Cummings, C. L., & Alexander, H. M. (2002). Population ecology of wild sunflowers: effects of seed density and post-dispersal vertebrate seed predation on numbers of plants per patch and seed production. Oecologia, 130, 274-280.

Alexander, H. M., Cummings, C. L., Kahn, L. & Snow, A. A. (2001). Seed size variation and predation of seeds produced by wild and crop-wild sunflowers. American Journal of Botany, 88, 623-627.

Haufler, C. H., & Alexander, H. M. (2001). Species and Speciation: Introduction, Discussion, and Example. Kansas Association of Biology Teachers Newsletter, 42, 1-4.

Snow, A. A., Rieseberg, L. H., Alexander, H. M., Cummings, C. & Pilson, D. (2000). Assessment of gene flow and potential effects of genetically engineered sunflowers on wild relatives. In The Biosafety Results of Field Tests of Genetically Modified Plants and Microorganisms: Fifth International Symposium (pp. 19-25). Berlin und Braunschweig: Biologischen Bundesanstalt fur Land-und Forstwirtschaft.

Kettle, W. D., Alexander, H. M., & Pittman, G. L. (2000). An 11-year ecological study of a rare prairie perennial (Asclepias meadii): implications for monitoring and management. American Midland Naturalist, 144, 66-77.

Alexander, H. M., & Mihail, J. D. (2000). Seedling disease in an annual legume: consequences for seedling mortality, plant size, and population seed production. Oecologia, 122, 346-353.

Cummings, C. L., Alexander, H. M., & Snow, A. A. (1999). Increased pre-dispersal seed predation in sunflower crop-wild hybrids. Oecologia, 121, 330-338.

Holah, J. & Alexander, H. M. (1999). Soil pathogenic fungi have the potential to affect the coexistence of two tallgrass prairie species. Journal of Ecology, 87, 598-608.

Slade, N. A., Gomulkiewicz, R. & Alexander, H. M. (1998). Alternatives to Robinson and Redford: assessing overharvest from incomplete demographic data. Conservation Biology, 12, 148-155. http://hdl.handle.net/1808/376

Mihail, J. D., Alexander, H. M., & Taylor, S. J. (1998). Interactions between root infecting fungi and plant density in an annual legume. Journal of Ecology, 86, 739-748.

Oudemans, P. V., Alexander, H. M., Antonovics, J. Altizer, S. Thrall, P. H., & Rose, L. (1998). The distribution of mating type bias in natural populations of the anther-smut Ustilago violacea on Silene alba in Virginia. Mycologia, 90, 372-381. DOI:10.2307/3761395 http://hdl.handle.net/1808/15191

Alexander, H. M., & Holt, R. D. (1998). The interaction between plant competition and disease. Perspectives in Plant Ecology, Evolution, and Systematics, 1 / 2, 206-220.

Alexander, H. M., Slade, N. A., & Kettle, W. D. (1997). Application of mark-recapture models to estimation of the population size of plants. Ecology, 78(4), 1230-1237. DOI:10.1890/0012-9658(1997)078[1230:AOMRMT]2.0.CO;2 http://hdl.handle.net/1808/15187

Thrall, P. H., Bever, J. D., Mihail, J. D., & Alexander, H. M. (1997). The population dynamics of annual plants and soil-borne fungal pathogens. Journal of Ecology, 85, 313-328.

Davelos, A. L., Alexander, H. M., & Slade, N. A. (1996). Ecological genetic interactions between a clonal host plant (Spartina pectinata) and associated rust fungi (Puccinia seymouriana and Puccinia sparganiodes). Oecologia, 105, 205-213.

Alexander, H. M., Thrall, P. H., Antonovics, J. Jarosz, A. M., & Oudemans, P. V. (1996). Population dynamics and genetics of plant disease: a case study of anther-smut disease. Ecology, 77(4), 990-996. DOI:10.2307/2265569 http://hdl.handle.net/1808/15190

Alexander, H. M., Slade, N. A., & Gomulkiewicz, R. (1995). A Bayesian approach to the inference of diploid genotypes using haploid genotypes. Theoretical and Applied Genetics, 91, 1284-1287.

Roche, B. M., Alexander, H. M., & Maltby, A. D. (1995). Dispersal and disease gradients of anther-smut (Ustilago violacea) infection of Silene alba at different life stages. Ecology, 76, 1863-1871. DOI:10.2307/1940719 http://hdl.handle.net/1808/15188

Alexander, H. M., & Antonovics, J. (1995). Spread of anther-smut disease (Ustilago violacea) and character correlations in a genetically variable experimental population of Silene alba. Journal of Ecology, 83, 783-794.

Alexander, H. M., Antonovics, J. & Kelly, A. W. (1993). Genotypic variation in plant disease resistance: physiological resistance in relation to field disease transmission. Journal of Ecology, 81, 325-333.

Alexander, H. M. (1992). Evolution of disease resistance in plant populations. In R. S. Fritz & E. L. Simms (Eds.), Ecology and Evolution of Plant Resistance (pp. 326-344). Univ. of Chicago Press.

Alexander, H. M. (1992). Fungal pathogens and the structure of plant communities. In G. C. Carroll & D. T. Wicklow (Eds.), The Fungal Community: its Organization and Role in the Ecosystem (pp. 481-497). Dekkor.

Antonovics, J. & Alexander, H. M. (1992). Epidemiology of anther-smut infection of Silene alba caused by Ustilago violacea: patterns of spore deposition in experimental populations. Proceedings of the Royal Society of London, Series B, 205, 157-163.

Marquis, R. J., & Alexander, H. M. (1992). Evolution of resistance and virulence in plant-herbivore and plant-pathogen interactions. Trends in Ecology and Evolution, 7, 126-129.

Alexander, H. M., & Bramel-Cox, P. (1991). Sustainability of genetic resistance. In . (Ed.), Plant Breeding and Sustainable Agriculture: Considerations for Objectives and Methods (pp. 11-27). Crop Science Society and American Society of Agronomy.

Alexander, H. M. (1991). Plant population heterogeneity and pathogen and herbivore levels: a field experiment. Oecologia, 86, 125-131.

Alexander, H. M. (1990). Dynamics of plant/pathogen interactions in natural plant communities. In J. J. Burdon & S. R. Leather (Eds.), Pests, Pathogens, and Plant Communities (pp. 31-45). Blackwell Sci. Pub.

Alexander, H. M., & Maltby, A. (1990). Anther-smut infection of Silene alba caused by Ustilago violacea: factors determining fungal reproduction. Oecologia, 84, 249-253.

Alexander, H. M. (1990). Epidemiology of anther-smut infection of Silene alba caused by Ustilago violacea: patterns of spore deposition and disease incidence. Journal of Ecology, 78, 166-179.

Antonovics, J. & Alexander, H. M. (1989). The concept of fitness in plant/fungal pathogen systems. In K. J. Leonard & W. E. Fry (Eds.), Plant Disease Epidemiology (pp. 185-214). McGraw-Hill.

Alexander, H. M. (1989). An experimental field study of anther-smut disease of Silene alba caused by Ustilago violacea: Genotypic variation and disease incidence. Evolution, 43, 835-847.

Groth, J. V., & Alexander, H. M. (1988). Genetic divergence in spatially-separated pathogen populations. In M. J. Jeger (Ed.), Spatial Components of Plant Disease Epidemics (pp. 165-181). Prentice-Hall Pub.

Alexander, H. M. (1988). Spatial heterogeneity and disease in natural populations. In M. J. Jeger (Ed.), Spatial Components of Plant Disease Epidemics (pp. 144-164). Prentice-Hall Pub.

Alexander, H. M., & Antonovics, J. (1988). Disease spread and population dynamics of anther smut infection of Silene alba caused by the fungus Ustilago violacea. Journal of Ecology, 76, 91-104.

Alexander, H. M. (1987). Pollination limitation in a population of Silene alba infected by the anther-smut fungus Ustilago violacea. Journal of Ecology, 75, 771-780.

Gates, D. J., Westcott, M. Burdon, J. J., & Alexander, H. M. (1986). Competition and stability in plant mixtures in the presence of disease. Oecologia, 68, 559-566.

Alexander, H. M., Roelfs, A. P., & Cobbs, G. (1986). Effects of disease and plant competition on yield in monocultures and mixtures of two wheat cultivars. Plant Pathology, 35, 457-465.

Alexander, H. M., & Wulff, R. (1985). Experimental ecological genetics in Plantago. X. The effects of maternal temperature on seed and seedling characters in Plantago lanceolata. Journal of Ecology, 73, 271-282.

Wulff, R. & Alexander, H. M. (1985). Intraspecific variation in the response to CO2 enrichment in seeds and seedlings of Plantago lanceolata L. Oecologia, 66, 458-460.

Alexander, H. M., Groth, J. V., & Roelfs, A. P. (1985). Virulence changes in Uromyces appendiculatus after five asexual generations on a cultivar of bean (Phaseolus vulgaris). Phytopathology, 75(4), 449-453. DOI:10.1094/Phyto-75-449 http://hdl.handle.net/1808/15193

Alexander, H. M., Roelfs, A. P., & Groth, J. V. (1984). Pathogenicity associations in Puccinia graminis f. sp. tritici in the United States. Phytopathology, 74(10), 1161-1166. DOI:10.1094/Phyto-74-1161 http://hdl.handle.net/1808/15192

Alexander, H. M., Antonovics, J. & Rausher, M. D. (1984). Relationship of phenotypic and genetic variation in Plantago lanceolata to disease caused by Fusarium moniliforme var. subglutinans. Oecologia, 65, 89-93.

Alexander, H. M. (1984). Spatial patterns of disease induced by Fusarium moniliforme var. subglutinans in a population of Plantago lanceolata. Oecologia, 62, 141-143.

Alexander, H. M., & Burdon, J. J. (1984). The effect of diseases induced by Albugo candida (white rust) and Peronospora parasitica (downy mildew) on survival and reproduction of Capsella bursa-pastoris (shepherd's purse). Oecologia, 64, 314-318.

Motten, A. F., Campbell, D. R., Alexander, D. E., & Miller (Alexander), H. L. (1981). Pollination effectiveness of specialist and generalist visitors to a North Carolina population of Claytonia virginica. Ecology, 62, 1278-1287.