Evaluating Landscape and Vegetation Change in Ventura River Watershed, California Using Remote Sensing

The Ventura River Watershed in California has changed dramatically in the last century and a half due to both natural and anthropogenic forces, including grazing, urbanization, the introduction of the Matilija and Casitas Dams, periodic droughts, and changes in climate. In order to enhance our understanding of these changes and contribute to the analysis of the potential Matilija Dam removal and watershed recovery, we conducted a comprehensive assessment of vegetation and landscape change over time (1853 to present) using an array of historical and current records, aerial imagery, Landsat remote sensing data and field analysis. The interpretive data ranges from historical ecological maps (160+ year old) and early aerial photos (1950s) to modern satellite imagery. The synthesis of our research methods allows us to (1) present a useful profile of ecological change, (2) provide a time-series analysis of vegetation and landscape change pre- and post-dam construction, and (3) offer a tool for ongoing vegetation monitoring. This interdisciplinary research project provides an exciting opportunity to contribute to resolving challenging landscape evolution and water-use issues.