- Evolution and population genetics and genomics of rare plants and their relatives
- Distribution and historical biogeography of plants in the southwestern deserts
- Factors affecting genetic and species diversity in plants
- Polyploidy and hybridization
I am interested in both patterns and processes in the evolution of plants. I work collaboratively at the interface of population genetics and phylogenomics using a variety of genetic and analytical approaches to investigate diversification of plants. My research program focuses on:
- Genetic variation and structure in populations of rare plants in order to gain a greater understanding of evolutionary processes and inform conservation action.
- Genetic relationships of closely related species, especially as influenced by polyploidy, hybridization, and ecology.
- Environmental, geographical, geological and historical processes that affect patterns of diversification and distribution in plant populations, in turn contributing to our understanding of future plant species distributions under global climate change.
Zumwalde, B.A., J.K. Dahir, A.B. Shaw, A. Willis, and S.D. Fehlberg. 2019. Characterization and development of microsatellite markers for Echinomastus johnsonii (Cactaceae) and congeneric taxa. Applications in Plant Sciences 7: e11302
Fehlberg, S.D. and K.M. Fehlberg. 2017. Spatial genetic structure in brittlebush (Encelia farinosa, Asteraceae) in the southwestern deserts of North America: a comparison of nuclear and chloroplast DNA sequences. Plant Systematics and Evolution 303:1367-1382. Download Paper
Fehlberg, S.D. 2017. Knowledge of genetic diversity informs conservation of a rare, clonal wetland plant Lilaeopsis schaffneriana var. recurva (Apiaceae). Journal of the Botanical Research Institute of Texas 11: 499-510. Download Paper
Long, R.W., S.E. Bush, K.C. Grady, D.S. Smith, D.L. Potts, C.M. D’Antonio, T.L. Dudley, S.D. Fehlberg, J.F. Gaskin, E.P. Glenn, K.R. Hultine. 2017. Can local adaptation explain varying patterns of herbivory tolerance in a recently introduced woody plant in North America? Conservation Physiology 5:1-13. link to full text
Chansler, M., C.J. Ferguson, S.D. Fehlberg, and L.A. Prather. 2016. The role of polyploidy in shaping morphological diversity in natural populations of Phlox amabilis (Polemoniaceae). American Journal of Botany 103: 1546-1558. link to full text
Fehlberg, S.D., M.C. Ty, and C.J. Ferguson. 2014. Reexamination of a putative diploid hybrid taxon using genetic evidence: The distinctiveness of Phlox pilosa subsp. deamii (Polemoniaceae). International Journal of Plant Science 175: 781-793. link
Fehlberg, S.D., J.M. Allen, and K. Church. 2013. A novel method of genomic DNA extraction for Cactaceae. Applications in Plant Sciences 1: e1200013. link to full text
Tew, J.M., S.L. Lance, K.L. Jones, and S.D. Fehlberg. 2012. Microsatellite development for an endangered riparian inhabitant, Lilaeopsis schaffneriana subsp. recurva (Apiaceae). American Journal of Botany Primer Notes & Protocols in the Plant Sciences 99: e164-166. link to full text
Fehlberg, S.D. and C.J. Ferguson. 2012. Intraspecific cytotypic variation and complicated genetic structure in the Phlox amabilis-P. woodhousei (Polemoniaceae) complex. American Journal of Botany 99: 865-874. link to full text
Fehlberg, S.D. and C.J. Ferguson. 2012. Intraspecific cytotype variation and conservation: An example from Phlox (Polemoniaceae). Calochortiana 1: 189-195. Download Paper
Fehlberg, S.D. and T.A. Ranker. 2009. Evolutionary history and phylogeography of Encelia farinosa (Asteraceae) from the Sonoran, Mojave, and Peninsular Deserts. Molecular Phylogenetics and Evolution 50: 326-335. link
Lehnert, M., M. Kessler, A.N. Schmidt-Lebuhn, S.A. Klimas, S.D. Fehlberg, and T.A. Ranker. 2009. Phylogeny of the fern genus Melpomene (Polypodiaceae) inferred from morphology and chloroplast DNA analysis. Systematic Botany 34: 1-11. link
Fehlberg, S.D., K.A. Ford, M.C. Ungerer, and C.J. Ferguson. 2008. Development, characterization and transferability of microsatellite markers for the plant genus Phlox (Polemoniaceae). Molecular Ecology Resources 8: 116–118. link
Fehlberg, S.D. and T.A. Ranker. 2007. Phylogeny and biogeography of Encelia (Asteraceae) in the Sonoran and Peninsular Deserts based on multiple DNA sequences. Systematic Botany 32: 692-699. link
Fehlberg (Kuchel), S.D. and L.P. Bruederle. 2000. Allozyme data support a Eurasian origin for Carex viridula ssp. viridula var. viridula Michx. (Cyperaceae). Madroño 47: 147-158. link
Fehlberg, S.D. 2019. Assessing genetic diversity in acuña cactus (Echinomastus erectocentrus var. acunensis) and its close relatives using microsatellites and DNA sequences. Report prepared for U.S. Fish and Wildlife Service, Tucson, AZ.
Williamson, P., P. Berresford, S.D. Fehlberg, and M. Terry. 2019. Black lace cactus (Echinocereus reichenbachii var. albertii) genetics and landowner conservation outreach project. Report prepared for Texas Parks and Wildlife, Austin, TX.
Fehlberg, S.D. 2017. Development of genetic resources for the study of acuña cactus (Echinomastus erectocentrus var. acunensis) and its close relatives. Report prepared for U.S. Fish and Wildlife Service, Tucson, AZ.
Fehlberg, S.D. 2015. Population genetic study of the Cochise pincushion cactus (Coryphantha robbinsorum) in Arizona. Report prepared for U.S. Fish and Wildlife Service, Tucson, AZ.
Fehlberg, S.D. 2015. Genetic similarities and differences among monitored Tamarix populations along the Virgin River. Report prepared for Desert Landscape Conservation Cooperative and U.S. Bureau of Reclamation.
Fehlberg, S.D. 2014. Improved genetic resources for the study of Huachuca Water Umbel (Lilaeopsis schaffneriana var. recurva). Report prepared for U.S. Fish and Wildlife Service, Phoenix, Arizona.
Fehlberg, S.D. 2013. Distinguishing Arizona hedgehog cactus from close relatives using genetic information. Report prepared for U.S. Fish and Wildlife Service, Phoenix, Arizona.
Fehlberg, S.D. 2012. Population genetic study of the Arizona hedgehog cactus in support of multiple Recovery Plan objectives. Report prepared for U.S. Fish and Wildlife Service, Phoenix, Arizona.
Fehlberg, S.D. 2012. Assessing genetic distinctiveness of Huachuca Water Umbel (Lilaeopsis schaffneriana subsp. recurva) on Fort Huachuca, Arizona and other regional sites. Report prepared for the Environmental and Natural Resource Division, Directorate of Public Works, U.S. Army Garrison, Fort Huachuca, Arizona.