The University of Arizona

Events

Biodiversity in Southern Arizona
Lily House-Peters, Biosphere 2 Science and Society Fellow, UA School of Geography and Development
Saturday, March 24, 2012
11:00 AM - 2:00 PM

Join Lily as she guides you through maps of the Upper San Pedro River and the Rio Sonora (both riparian areas), and photos of specific reaches of the rivers taken at different points during the 20th century.  These photos will highlight 1) vegetation change, such as mesquite encroachment and cottonwood forest maturation, 2) changes in human activity in the floodplain, including agricultural and ranching practices, 3) changes in urban growth and settlement patterns in the region, and 4) conservation, specifically the establishment of the San Pedro Riparian National Conservation Area (SPRNCA).  Lily will also provide leaf samples of different keystone riparian species, such as mesquite and cottonwood, and photos of a range of the animals that depend on the riparian area to highlight biodiversity.