2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2018 | 9:30 AM - 9:45 AM | NUTRIENT UPTAKE POTENTIAL BY INVASIVE TYPHA X GLAUCA IN GREAT LAKES COASTAL WETLANDS: A 15-YEAR LONGITUDINAL STUDY. | 430 B
NUTRIENT UPTAKE POTENTIAL BY INVASIVE TYPHA X GLAUCA IN GREAT LAKES COASTAL WETLANDS: A 15-YEAR LONGITUDINAL STUDY.
Invasive Typha × glauca, is pervasive in Great Lakes Coastal Wetlands (GLCW), and has reduced plant community diversity and altered biogeochemical functioning. In a 15-year study identifying mechanisms of invasion, plant diversity suppression, and management methods for diversity recovery, our team has determined that time-since-invasion strongly correlates with biodiversity loss, biogeochemical changes, and plant community restorability. We have demonstrated that biomass harvesting as a management strategy both increases native species diversity and decreases Typha dominance. Expanses of GLCW receiving high levels of nutrient runoff are commonly dominated by dense monocultures of Typha and no longer support diverse wildlife. We argue that these degraded wetlands can provide important ecosystem services by reducing nutrient input to the Great Lakes when harvesting is employed. Our large-scale experiments demonstrate that 90 kg/ha of N and 7 kg/ha P can be feasibly harvested in a mesotrophic GLCW per year. Further, harvested biomass is a viable renewable energy feedstock, with the potential to offset fossil-fuel use. Our team is working with a wide range of partners to enhance the ecosystem services provided by these degraded ecosystems and to utilize invasive Typha biomass for fuel and compost.
- Restoration
- Nutrients
- Phosphorous
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Presenters/Authors
Nancy Tuchman
(), Loyola University Chicago, ntuchma@luc.edu;
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Shane Lishawa
(), Loyola University Chicago, slishawa@luc.edu;
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