Loading Events

« All Events

  • This event has passed.

Chapter Meeting

August 15, 2019 @ 9:00 am - 12:00 pm

The speaker for August is Dr. Alexandra Ponette-Gonzalez on Urban Oak Trees Provide Air Quality and Climate Benefits in Denton, Texas

Short Description: In urban areas, vehicles are a major source of fine particulate matter (PM2.5) to the atmosphere. Black carbon, also known as ‘soot’, is a particularly harmful component of PM2.5. Tiny soot particles absorb solar radiation, warming cities, regions, and the globe, and when inhaled, contribute to respiratory and cardiovascular disease. Our laboratory’s National Science Foundation-funded research demonstrates that planting and conserving trees can mitigate these effects. We estimate that together post oak and live oak trees in the City of Denton potentially accumulate 3.5 tons of soot per year, equivalent to ~32% of annual vehicular soot emissions from the city.

Short Bio: Dr. Alexandra Ponette-González (PhD 2009, Yale University) is Associate Professor of Geography and the Environment and Director of the Ecosystem Geography Lab at the University of North Texas. Her research focuses on human-atmosphere-biosphere interactions in the context of global change. She explores how human activities influence ecosystem processes, including water and elemental cycling, via ‘bottom up’ changes in vegetation distributions and ‘top down’ changes in emissions sources. Her work spans diverse ecosystems from tropical forest to urban, and advances understanding of the causes and ecosystem consequences of changing land use and atmospheric drivers.

Website: https://ponettelab.cargo.site

The Elm Fork Chapter meets the third Thursday of the month. Meet and greet at 9 am, business meeting starts at 9:30, followed by a presentation.


August 15, 2019
9:00 am - 12:00 pm


Denton County Elections Administration
701 Kimberly Drive, Suite A101
Denton, TX 76208 United States
+ Google Map