Paul has been working in natural resource research and consulting, primarily in Montana, Idaho, Colorado, and Wyoming since 1988. He specializes in wetland, riparian and rangeland ecology, including research; grant writing, publication, and resource analysis. He has expertise in plant-based approaches to wastewater treatment, sediment control, and streambank stabilization; invasive plant establishment in wetlands; plant-soil relations; and quantitative methods for ecological and water resource studies. Paul worked as an assistant professor at Montana State University for 7 years before joining IMA and taught courses in wetland ecology, watershed management, and ecological monitoring. Paul has provided his expertise in statistics and scientific monitoring on numerous IMA projects and has contributed directly to research on revegetation methods for sedge wetlands, analysis of thermal impacts from pond development, design of a wetland plant nursery, completing a stormwater wetland feasibility analysis, studies of weed control and streambank bio-engineering, and designs for a wastewater wetland treatment facility.