David Holway


Research in our lab is currently divided into two areas:

Biological invasions:

The introduction of species into new environments has increasingly become an economically costly and environmentally destructive phenomenon. Our research on invasions primarily encompasses the following questions. (i) What factors control susceptibility to invasion? (ii) What extent can native species assemblages recover following experimental invader removal?

Pollination services:

Declining pollinator populations threaten to compromise the integrity of pollination services in both agricultural and non-managed systems. Our research addresses this general issue from two perspectives. (i) How does land-use intensification threaten pollinator populations, and to what extent do the resulting pollinator declines compromise pollination services? (ii) How do non-native species interact with native pollinators, and when do these interactions negatively impact pollination services?


  • Menke, S.B., P.S. Ward & D.A. Holway. Long-term record of Argentine ant invasions reveals enduring ecological impacts. Ecology, 99:1194–1202.
  • Hung, J., J.M. Kingston, M. Albrecht, D.A. Holway & J.R. Kohn. 2018. The worldwide importance of honey bees as pollinators in natural habitats. Proceedings of the Royal Society B 285: 20172140.
  • Nabors, A.J., H.J. Cen, K-L.J. Hung, J.R. Kohn & D.A. Holway. 2018. The effect of removing numerically dominant, non-native honey bees on seed set of a native plant. Oecologia 186:281-289.
  • Hung, J., J.S. Ascher & D.A. Holway. 2017. Urbanization-induced habitat fragmentation erodes multiple components of temporal diversity in a Southern California native bee assemblage. PLoS One 12:e0184136.
  • Schochet, A.B., K-L J. Hung, & D.A. Holway. 2016. Bumble bee species exhibit divergent responses to urbanization in a Southern California landscape. Ecological Entomology 41:685-692.
  • Hanna, C., I. Naughton, C. Boser & D.A. Holway. 2015. Testing the effects of ant invasions on non-ant arthropods with high-resolution taxonomic data. Ecological Applications 25:1841-1850.
  • LeVan, K.E. & D.A. Holway. 2015. Ant-aphid interactions increase ant floral visitation and reduce plant reproduction via decreased pollinator visitation. Ecology 96:1620-1630.
  • Hanna, C., I. Naughton, C. Boser, R. Alarcón, K-L J. Hung, & D.A. Holway. 2015. Floral visitation by the Argentine ant reduces bee visitation and plant seed set. Ecology 96:222-230.