Sponsored by: Deep Root
Bioretention is a type of green infrastructure practice that is commonly implemented to manage stormwater runoff in cities around the world. Though designs can vary, bioretention practices typically consist of an engineered sandy soil media underlain by a layer of drainage rock and topped with turf grass or mulch and various forms of vegetation.
Due to the unique hydrologic and soil moisture regimes found in bioretention practices, namely extended periods of dryness with intermittent periods of temporary inundation, vegetation, such as shrubs, native grasses, and sedges—which are often selected on their ability to survive these harsh conditions—typically dominate most bioretention planting plans. And while research has shown that trees provide a number of ecosystem services to the urban environment, including heat island mitigation and improved air quality, their contributions to stormwater management in bioretention practices are not well understood.
As a long-lived plant form with extensive above- and below-ground biomass, trees have the potential to improve on the hydrologic and water-quality aspects of bioretention performance previously reported for other forms of vegetation. Therefore, there is a need to characterize tree health in bioretention and the benefits they provide to inform appropriate species selection and enhance the stormwater management performance of bioretention practices.
Join Forester University for this live, educational webinar as speaker and University of Tennessee Department of Civil and Environmental Engineering postdoctoral researcher shares the results of several research efforts conducted at UT designed to investigate the role of trees in bioretention practices and the urban environment. Topics covered will include a field health assessment of trees in existing bioretention practices in the southeastern United States, a controlled experiment comparing the hydrologic and pollutant removal performance of various tree species in bioretention mesocosms, and a field-scale study of two suspended pavement systems designed to function as subsurface bioretention practices that were monitored over a two-year period.
This course will provide insights on the benefits provided by trees in green infrastructure and the considerations that should be prioritized regarding system design and tree species selection to maximize bioretention functionality and improve tree health. By promoting and optimizing the use of trees in bioretention practices, stormwater engineers and urban foresters will also incorporate the various ecosystem services attributed to urban trees and, as a result, increase the overall environmental benefits of the bioretention practice.
By participating in this webinar, attendees will:
- Learn how the health of trees in bioretention practices compares to other urban trees and understand the design and environmental factors that are most influential to tree health in these systems
- Discover the contributions trees provide to the hydrologic and pollutant removal performance of bioretention practices and how they vary among tree species
- Gain exposure to, and understand the performance capabilities of, green infrastructure technologies designed to simultaneously manage urban runoff and promote tree health
- Understand how bioretention design and meteorological parameters impact tree function in bioretention suspended pavement systems
* Presentations are scheduled for approximately one hour with a 15-20 minute question and answer session to follow. Presentation may exceed scheduled time.
* Each state and certification agency has different requirements; it is your responsibility to know what they are. Note that 1 PDH = 0.1 CEU.
* Purchase of this course allows you access to the presentation(s) for 6 months from the order date.