Implementation of Coregonine Population Viability Analysis within the Coregonine Restoration Framework – Year 3

Contributing Authors

John Sweka (USFWS,, Brian Weidel (USGS), Andrew Honsey (USGS), Cory Brant (USGS), Karen Alofs (U of Michigan), Andrew Muir (GLCF), Amanda Ackiss (USGS), David Bunnell (USGS)

Project Description

The Coregonine Restoration Framework (CRF) provides an adaptive management structure to guide restoration of this suite of species in the Great Lakes Region. Initial steps in this effort established four science teams [Resolve Taxonomy, GAP Analysis, Population Viability Analysis (PVA), and Threats Assessment] whose charge was to propose analytical methods for their respective elements and guide the implementation of those methods. Methods developed by these teams were approved and endorsed by the Council of Lakes Committee and we are now moving into the implementation phase. This project will continue the initial implementation of the methods of the PVA team funded in FY2022 and FY2023. Previous funds were used to hire a GS-12 level modeler to work with partners, including other science teams, and lead efforts to develop and conduct PVA models. These efforts are needed to determine the potential effects of various management alternatives in advancing coregonine restoration. Initial efforts are focusing on bloater restoration in Lake Ontario and cisco reintroduction in Lake Erie. These efforts will be the first true test runs of the adaptive management strategy outlined by the CRF, but funding for this position will also allow analysis of existing fishery-independent and –dependent data from other areas to develop additional population models. Given the limited capacities of staff across partner resource agencies, further advancement of the CRF needs full time, dedicated staff for the implementation.

Funded In

Funding Agency


Restoration Framework Phase

Project Impact



Project Subjects