Tyndall,
John
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Publications
Welcome to the New Frontier: Introducing Extension to the Next Generation of Conservation Planning Tools
Techno-economic and life cycle analysis of renewable natural gas derived from anaerobic digestion of grassy biomass: A US Corn Belt watershed case study
A systematic review of social equity in FEWS analyses
Financial Analysis of Converting Rural Lawns to Pollinator Habitat in the Corn Belt
Conservation efforts in rural landscapes seek to improve the multifunctional nature of land uses for people and the biotic communities that support them. In these environments, existing turfgrass lawns mowed routinely through the summer present an opportunity where changes in management from intensively managed monocultures to diverse native perennial vegetation can stack environmental benefits by improving soil health, water quality, and wildlife habitat. Conversion of lawns to pollinator habitat can help achieve continental goals of reversing declines in high-profile species such as the monarch butterfly Danaus plexippus and native bees. Here, we examine the financial implications for landowners and managers considering conversion of lawns to pollinator habitat in rural landscapes. We examined financial factors over a 10-y management horizon in three unique scenarios with a range of expenses: self-maintenance of lawns, contracted maintenance of lawns, and establishment and management of pollinator habitat. Our analyses indicate conversion to pollinator habitat was appreciably less expensive ($54–$167·acre−1·y−1) than continued self-care ($637–$1,007·acre−1·y−1) or contracted care ($326–$1,034·acre−1·y−1) of lawns over a 10-y period. These results establish the financial benefits for landowners or land managers considering an alternative management paradigm of existing lawns. These financial benefits complement existing literature, demonstrating multiple ecological benefits of diverse native perennial vegetation.
Mapping barriers to food, energy, and water systems equity in the United States
The influence of prairie strips sown in midwestern corn and soybean fields on sediment discharge throughout the year
Learning About Ecosystem Services with PEWI: Student Reflections
Economic evaluation of barriers to minimize reservoir sport fish escapement
Methods: We developed a framework using simulation modeling and discounted cash flow techniques to quantify the costs and benefits of barrier construction on Brushy Creek Lake, Iowa, where a barrier was constructed in 2020 to reduce escapement of stocked Walleye Sander vitreus and Muskellunge Esox masquinongy. We then incorporated this framework into an interactive Shiny application to enable cost–benefit evaluations across a wide range of barrier types, system types, species, and escapement rates.
Result: The present value of the parallel-bar barrier on Brushy Creek Lake, Iowa, over 10 years was US$69,576 (range = $64,484–$73,976), whereas the present value of escaped fish was $316,416 ($253,459–$378,823), indicating a net benefit of $246,840 ($188,975–$304,847) associated with barrier construction. The benefit–cost ratio of barrier construction was 4.55 after 10 years, indicating that for every $1 in present value spent on barrier construction, we saved $4.55 by preventing fish escapement. There was a 99% probability of a positive mean net benefit of the barrier after 3 years.
Conclusion: Our results indicate that barriers can be a cost-effective option to minimize fish escapement, and barrier costs are more predictable compared with the cost of escapement. Quantifying the value of escaped fish and barrier construction on an economic scale enables the use of formal decision-making tools to address complicated and multifaceted issues associated with reservoir fisheries management.
Responses to Outstanding Stakeholder Questions: Supplemental Document to 2023 Grass2Gas Iowa, Pennsylvania, and National Workshop Proceedings
The Agricultural Conservation Planning Framework Financial and Nutrient Reduction Tool: A planning tool for cost effective conservation