* undergraduate coauthor

^ co-first authors

in prep

DT Simpson^ and W. Petry^, P. CaraDonna, and A. Iler. Experimental demography reveals plant life history responses to changing pollination rates.

DT Simpson. The curious case of Bombus impatiens: habitat affects catch rates and colony abundance, but not population genetics, of this unusually common bumble bee.

published

DT Simpson, C. Smith, R. Winfree. 2025. Wild bees and landcover: bee species’ body size does not predict the scale of effect, but bee phenology predicts association with landcover type. Ecography. In print

DT Simpson. 2025. Using rates of isolation-by-distance to jointly estimate effective population size and dispersal distances: a practical demonstration using bumble bees. Oecologia 207:93. doi.org/10.1007/s00442-025-05721-4

Reilly, J., I. Bartomeus, DT Simpson, A. Allen-Perkins, L. Garibaldi, R. Winfree. 2024. Wild insects and honey bees are equally important to crop yields in a global analysis. Global Ecology and Biogeography. doi.org/10.1111/geb.13843

Smith, C., J. Bonachela, DT Simpson, N. Lemanski, R. Winfree. 2024. Geometric effects of fragmentation are likely to mitigate diversity loss following habitat destruction in real-world landscapes. Global Ecology and Biogeography. doi.org/10.1111/geb.13826

Aldercotte, AH, DT Simpson, R Winfree. 2022. Crop visitation by wild bees declines over an eight-year time series - a dramatic trend, or just dramatic between-year variation? Insect Conservation and Diversity. doi.org/10.1111/icad.12589.

Simpson, DT, L Weinman, M Genung, M Roswell, M Teague, and R Winfree. 2022. Many bee species, including rare species, are important for function of entire plant-pollinator networks. Proceedings of the Royal Society B 289: 20212689. doi.org/10.1098/rspb.2021.2689

Simpson, DT, MS Teague*, JK Weeks*, BZ Kaup, O Kerscher, and M Leu. 2019. Habitat amount, quality, and fragmentation associated with prevalence of the tick-borne pathogen Ehrlichia chaffeensis and occupancy dynamics of its vector, Amblyomma americanum. Landscape Ecology 34: 2435-2449. doi.org/10.1007/s10980-019-00898-5

Bunn, RA, DT Simpson, LS Bullington, Y Lekberg, and DP Janos. 2019. Revisiting the ‘direct mineral cycling’ hypothesis: Arbuscular mycorrhizal fungi colonize leaf litter, but why? ISME 13: 1891-1898. doi.org/10.1038/s41396-019-0403-2

Simpson, DT, MS Teague*, JK Weeks*, AD Lewis*, PM D’Addio*, JD Moore*, JA Thompson*, RT Canella*, AC Harris*, BZ Kaup, O Kerscher, and M Leu. 2019. Broad, multi-year sampling effort highlights complex dynamics of the tick-borne pathogen Ehrlichia chaffeensis. Journal of Medical Entomology 56(1): 162-168. doi.org/10.1093/jme/tjy171