Here is what he shared with us:
Interactions between river stage and wetland vegetation detected with a Seasonality Index derived from Landsat images in the Apalachicola delta, Florida
What are the major findings of this research?
Our results show that the hardwood swamp in the Apalachicola River, dominated by bald cypress and water tupelo, is slowly replaced by bottomland hardwood forest. This forest shift is driven by lower water levels in the Apalachicola River in the last 30 years.
What are the implications of your findings?
The Apalachicola River basin is one of the six biodiversity hotspots in the United states. A shift is vegetation cover could potentially reduce the number of tree species as well affect birds, fish, and reptiles.
What insight did you gain from Landsat that would have been impossible to glean otherwise?
Landsat data allowed us to distinguish between hardwood swamp, the typical forest in the Apalachicola River floodplain, and bottomland hardwood forest, the encroaching forest that thrives on drier soils.
How was the seasonality index developed?
The seasonality index was developed by comparing the NDVI in winter months to the NDVI in summer months. The hardwood swamp displays a much lower NDVI during winter with respect the bottomland hardwood forest.
University of Trento
Daniele la Cecilia
University of Trento
Curtis E Woodcock
This research was partly supported by the donors of the American Chemical Society Petroleum Research Fund and the National Science Foundation (VCR-LTER program).
Anyone can freely download Landsat data from the USGS EarthExplorer or LandsatLook.
+ Landsat Abounds at #AGU16
Webinar Recording Available: Advancing Science Capabilities with Data Harmonization & NASA’s Harmonized Landsat Sentinel-2 (HLS) Products
This webinar provides an introduction to HLS data, services, and tools and shows you how to find resources to work with the data; visualize, search for, and access the data through NASA Worldview and Earthdata Search; it also demonstrates how to use the Fire Information for Resource Management System (FIRMS) tool to visualize HLS data to monitor fires and floods.