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University of Wisconsin, Department of Forestry and Wildlife Ecology

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Control of invasive sea lamprey recruitment from tributary streams is a major management objective in the Great Lakes, and benefits from barriers that prevent access to spawning habitat. As society moves toward removal of more tributary barriers due to concerns about native migratory fishes, aging infrastructure, and vulnerability to climate-driven flooding, it is important to assess the costs of alternative options for sea lamprey control. This project is integrating cost estimates for application of a lamprey-specific pesticide into cost-benefit optimization models used to support decisions about barrier removals that maximize restoration of habitat for native species. By integrating lamprey control options...
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Grassland birds throughout the United States have exhibited significant declines in the last three decades indicated no grassland bird species in the Upper Midwest were increasing in abundance. Continental and regional population declines are mirrored in Wisconsin with species like Henslow’s Sparrow, Grasshopper Sparrow, Eastern Meadowlark and others declining by 50 – 90% since 1970. Conservation groups, state and federal agencies within the Upper Midwest have long recognized these declines and have taken action, yet despite the value of these conservation actions, none of the grassland birds have halted their population declines or returned to population sizes of the 1970s. Within the conservation community there...
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