Cooperative Fish and Wildlife Research Units Program: Pennsylvania
Education, Research and Technical Assistance for Managing Our Natural Resources

Pennsylvania Project

Scale, Space, and Time: A Unifying Approach to Aquatic Invasions

January 2021 - December 2026


Participating Agencies

  • National Science Foundation

Species invasions are a major catalyst in the global biodiversity crisis, with particularly acute effects in river ecosystems. Yet despite decades of research, ecology still faces a glaring paradox: Many invasion theories are at odds with one another, but each is supported by strong empirical evidence. The paradox exists because studies have been constrained in three key dimensions: scale, space, and time. Using riverine fishes as a model system, the project team will integrate invasion theories to develop a more unified framework of species invasions. Because this research will be broadly applicable to other systems and taxa, it will support our partners, including state and federal fish and wildlife agencies, in their management decision making processes designed to prevent, manage, and predict the spread of invasive species.