Skip to main content
A Unifying Gravity Framework for Dispersal
Theoretical Ecology
  • Eelke Jongejans, Radboud University Nijmegen
  • Olav Skarpaas, Norwegian Institute for Nature Research
  • Matthew J. Ferrari, Pennsylvania State University
  • Eric S. Long, Seattle Pacific University
  • Joseph T. Dauer, University of Nebraska-Lincoln
  • Carrie M. Schwarz, Western Washington University
  • Emily S.J. Rauschert, Cleveland State University
  • Randa Jabbour, University of Wyoming
  • David A. Mortensen, Pennsylvania State University
  • Scott A. Isard, Pennsylvania State University
  • David A. Lieb, Western Pennsylvania Conservancy and Pennsylvania Fish and Boat Commission
  • Zeynep Sezen, University of Minnesota
  • Andrew G. Hulting, Oregon State University
  • Katriona Shea, Pennsylvania State University
Document Type
Publication Date
Most organisms disperse at some life-history stage, but different research traditions to study dispersal have evolved in botany, zoology, and epidemiology. In this paper, we synthesize concepts, principles, patterns, and processes in dispersal across organisms. We suggest a consistent conceptual framework for dispersal, which utilizes generalized gravity models. This framework will facilitate communication among research traditions, guide the development of dispersal models for theoretical and applied ecology, and enable common representation across taxonomic groups, encapsulating processes at the source and destination of movement, as well as during the intervening relocation process, while allowing each of these stages in the dispersal process to be addressed separately and in relevant detail. For different research traditions, certain parts of the dispersal process are less studied than others (e.g., seed release processes in plants and termination of dispersal in terrestrial and aquatic animals). The generalized gravity model can serve as a unifying framework for such processes, because it captures the general conceptual and formal components of any dispersal process, no matter what the relevant biological timescale involved. We illustrate the use of the framework with examples of passive (a plant), active (an animal), and vectored (a fungus) dispersal, and point out promising applications, including studies of dispersal mechanisms, total dispersal kernels, and spatial population dynamics.

We are grateful for the financial support from the Netherlands Organization for Scientific Research (NWO-meerwaarde grant 850.11.001 to EJ), the Norwegian Research Council (grant 161484/V10 to OS), and the US National Science Foundation (grants DEB-0315860 and DEB-0614065 to KS).

Citation Information
Jongejans E, Skarpaas O, Ferrari MJ, Long ES, Dauer JT, Schwarz CM, Rauschert ESJ, Jabbour R, Mortensen DA, Isard SA, et al. 2015. A unifying gravity framework for dispersal. Theoretical Ecology. 8(2):207-23.