One MS or PhD research assistant position is available for studies on the effects of livestock production practice on ecosystem function. Students interested in rangelands/grasslands, ecosystem ecology, toxicology, entomology, or livestock management are especially encouraged to apply. The student will work in the laboratories of Dr. Lora Perkins and Dr. A. Joshua Leffler in the Department of Natural Resource Management. The research will focus on the impact of parasiticides used in livestock production on dung beetle populations and communities, nitrogen cycling, carbon flux, or plant biomass and species composition. The field component of the research will be conducted in central South Dakota. The assistantship funded by USDA includes a 12-month stipend and tuition waiver. To apply, send a single PDF file with your CV; unofficial transcripts; a letter describing your experience, research interests, and career goals; and contact information for three professional references to Dr. Lora Perkins (lora.perk...@sdstate.edu) or Dr. A. Joshua Leffler (joshua.leff...@sdstate.edu). Apply by 1 September 2018.