The health of Maine’s rivers may be key to the future of the state’s commercial and sports fisheries—and to the economies of the communities that have relied on them. John Lichter, associate professor in the natural sciences at Bowdoin College, is leading an SSI team studying alewife restoration in the Kennebec and Androscoggin rivers, and the ecological and economic impacts of these efforts on fisheries and economies from the headwaters to the coast.
Why This Project?
Alewives are a key food source for cod, haddock, striped bass, and other important commercial and sport fisheries. Alewife populations have plummeted over the past century, however, due largely to human activity on rivers, including dams and pollution from factories.
As factories have closed and some dams have fallen into disuse, efforts to restore rivers to support alewives and other species are under way around the state, including on the Kennebec and Androscoggin. Little is known, however, about what determines the success or failure of these efforts or their larger effects.
Communities, agencies, and organizations need better information to weigh the potential costs or benefits of river restoration. The lack of such information can contribute to uncertainty and conflict over how to best manage natural resources.
Connecting Knowledge with Action
Lichter’s team is comparing restoration efforts on the Androscoggin and Kennebec rivers to examine the factors that influence success or failure, as well as the larger impacts of these efforts. The team’s findings will help communities and groups make more informed decisions about the costs and benefits of river restoration efforts. Findings also will contribute to a better understanding of the effects of river restoration on fisheries and economies at the basin and town scales.
Ecological and economic recovery and sustainability of the Kennebec and Androscoggin Rivers, estuary and nearshore environment