Initial recommendations for higher-tier risk assessment protocols for bumble bees, Bombus spp. (Hymenoptera: Apidae)

Ana R. Cabrera, Maria Teresa Almanza, G. Christopher Cutler, David L. Fischer, Silvia Hinarejos, Gavin Lewis, Daniel Nigro, Allen Olmstead, Jay Overmyer, Daniel A. Potter, Nigel E. Raine, Cory Stanley-Stahr, Helen Thompson, Jozef van der Steen