Peer-reviewed publications

For a more up-to-date list, please visit my Google Scholar profile.

Williams, N.M. and Hemberger, J.. Climate, pesticides and landcover drive current and predicted declines of the western bumble bee. In press, Proceedings of the National Academy of Sciences

Hemberger, J., Rosenberger, N.M, Williams, N.M. Experimental heat waves disrupt bumble bee foraging through direct heat effects and reduced nectar production. Functional Ecology. 00, 1-11 (2022) 10.1111/1365-2435.14241. (PDF)

Hemberger, J., Witynski, G., Gratton, C. Floral resource continuity boosts bumble bee colony performance relative to variable floral resources. Ecological Entomology. 47:4, 703-712 (2022) 10.1002/een.13154.

Mola, J.M., Hemberger, J., Kochanski, J., Richardson, L.L., Pearse, I. The importance of forests in bumble bee biology and conservation. BioScience. 71:12, 1234-1248 (2021) 10.1093/biosci/biab121.

Page, M.L., Nicholson, C.C., Brennan, R., Britzman, A., Hemberger, J., Greer, J., Kahl, H., Müller, U, Peng, Y., Rosenberger, N, Stuligross, C., Wang, L., Yang, L., Williams, N.M. A meta-analysis of single-visit pollinator effectiveness. American Journal of Botany. 108:11, 2196-2207 (2021) 10.1002/ajb2.1764

Hemberger, J., Crossley, M., Gratton, C. Historical decrease in agricultural landscape diversity is associated with shifts in bumble bee species occurrence. Ecology Letters. 24:9, 1800-1813 (2021) 10.1111/ele.13786

Hemberger, J., Frappa, A., Witynski, G., Gratton, C. Saved by the pulse? Separating the effects of total and temporal food abundance on the growth and reproduction of bumble bee microcolonies. Basic and Applied Ecology. 45, 1-11 (2020) 10.1016/j.baae.2020.04.004

Hemberger, J. and Gratton C. Floral resource pulse decreases bumble bee foraging trip duration in central Wisconsin agroecosystem. Ecological Entomology. 43, 447–457 (2018). 10.1111/een.12516

In review or submitted

Hemberger, J. and Gratton C. Floral resource discontinuity contributes to spatial mismatch between pollinator supply and pollination demand in a pollinator-dependent agricultural landscapes. In review, Landscape Ecology

Hemberger, J., Bernauer, O., Gaines-Day, H., Gratton, C. Landscape-scale floral resource discontinuity decreases bumble bee occurrence and alters community composition. In review, Journal of Applied Ecology

Hemberger, J. and Williams, N.M. Semi-natural habitats are critical to provide season-long pollen resources for foraging bumble bees in mosaic agricultural landscapes. In review, Journal of Applied Ecology

Manuscripts in preparation

Hemberger, J. and Williams, N.M. Recent climate warming has rapidly restructured North American bumble bee communities.

Hemberger, J., Nootenboom, C., Lonsdorf, E., Williams, N.M. An inventory of potential: quantifying the value of underutilized land for pollinator conservation and pollination service delivery.

Hemberger, J., Williams, N.M. Increase in extreme heat threatens insect visitation to pollinator dependent crops in the California Central Valley.

Public science communication

The Bumble Bees of Wisconsin: an interactive website to learn about the ecology and conservation of Wisconsin’s bumble bee fauna, as well as how to identify them in the field. Includes both an online guide and PDF field guide. 2018.