Dr. John J. Wiens
Professor, Department of Ecology and Evolutionary Biology, University of Arizona
Monday, December 15, 2025
3:00-4:00 pm,
Koffler Great Room at ASA and zoom
Biodiversity is the diversity of life. In his talk, Dr. Wiens will discuss how many species are known on Earth and how many there may be in the future. Many new species continue to be discovered every year, and the fastest rates of species discovery ever have been in the last few years. He will also talk about the loss of biodiversity, including the rates and causes of recent extinctions of plants and animals, and the current and future impacts of climate change. Even though hundreds of species have gone extinct over the last 500 years and thousands more are now threatened, there is no strong evidence for a current Sixth Mass Extinction. He will finish by talking about his department’s work on the impacts of climate change on Sky Island lizards in southeastern Arizona.
Lectures are available live over Zoom
You can connect to Zoom either by using the following URL:
https://zoom.us/j/95456511620?pwd=OC9GcnJRNmJpMTdXdXFhaUpCUkx4QT09
or by opening a browser to zoom.com/join and typing in
Meeting ID: 954 5651 1620
Passcode: 85747
