Professor of Agroecology

Adjunct Associate Professor

Linköping University

University of Nebraska - Lincoln

Interim President, Professor of Plant Agriculture, University of Guelph

Professor of Agricultural Ecology, University of New Hampshire

Professor of Weed Ecology

Professor of Agricultural Innovation, Charles Sturt University

Professor, Weed Ecology and Management, Montana State University

Weed Ecologist - Wageningen University; Prof. of Agronomy - University of Greenwich