Mark R. T. Dale is Professor of Ecosystem Science and Management at the University of Northern British Columbia, Canada, where he has served in several administrative roles. His research interests are based on the spatial structure of plant communities and include the development of quantitative methods to answer ecological questions. His work on plant community structure and the dynamics of spatial pattern development has led to significant contributions in the application of graph theory and the study of ecological networks. Mark is the author of Applying Graph Theory in Ecological Research (2017) and co-author of Quantitative Analysis of Ecological Networks (2021), both published by Cambridge University Press. Marie-Josée Fortin is a University Professor in the Department of Ecology and Evolutionary Biology at the University of Toronto. She is a Fellow of the Royal Society of Canada and holds a Tier 1 Canada Research Chair in Spatial Ecology. Her research is at the interface of spatial ecology and conservation biology including modelling connectivity in urban environments, ecosystem services, and forest resilience. Marie-Josée is co-author of Quantitative Analysis of Ecological Networks (Cambridge University Press, 2021).