Ph.D Plant Evolutionary Biology, University of Georgia 2003
My research focuses on 1) the impact of landscape level disturbance and habitat fragmentation on the evolutionary trajectories of plant species, particularly neotropical orchids and epiphytes and 2) phylogeographic analyses for the purpose of identifying ancient refugia associated with Pleistocene glacial maxima and subsequent expansion zones of plant taxa in response to global warming.
Our lab employs population genetic tools to develop an understanding of the evolutionary factors that shape patterns of genetic variation in natural plant populations and the manner in which species-wide variation is partitioned and maintained. This is of particular interest in the context of increasingly fragmented landscapes and the ubiquitous nature of human induced habitat disturbance as well as global climate change.
- Organization for Tropical Studies, Assembly of Delegates representative for the University of Georgia. June 2009 - present.
- Parker KC, Trapnell DW, Hamrick JL, Hodgson WC (2014) Genetic and morphological contrasts between wild and anthropogenic Agave parryi var. huachucensis populations in south-eastern Arizona. Annals of Botany, 113, 939-952.
- Kartzinel TR, Shefferson RP, Trapnell DW (2013) Relative importance of pollen and seed dispersal across a Neotropical mountain landscape for an epiphytic orchid. Molecular Ecology, 22, 6048-6059.
- Kartzinel TR, Trapnell DW, Shefferson RP (2013) Highly diverse and spatially heterogeneous mycorrhizal symbiosis in a rare epiphyte is unrelated to broad biogeographic or environmental features. Molecular Ecology, 22, 5949-5961.
- Kartzinel TR, Trapnell DW, Shefferson RP (2013) Critical importance of large native trees for conservation of a rare Neotropical epiphyte. Journal of Ecology, 101, 1429-1438.
- Trapnell DW, Hamrick JL, Ishibashi C, Kartzinel T (2013) Genetic inference of epiphytic orchid colonization; it may only take one. Molecular Ecology, 22, 3680-3692.
- 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. AJB Primer Notes & Protocols in the Plant Sciences. e477-e480.
- Kartzinel TR, Trapnell DW, Glenn TC (2012) Microsatellite primers for the Neotropical epiphyte Epidendrum firmum (Orchidaceae). AJB Primer Notes & Protocols in the Plant Sciences. e450-e452.
- Tompkins RD, Trapnell DW, Hamrick JL, Stringer W (2012) Genetic variation within and among remnant Big Bluestem (Andropogon gerardii, Poaceae) populations in the Carolinas. Southeastern Naturalist, 11, 455-468.