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Welcome to OceanWorld - Bringing the Ocean to the Classroom. Using ArcGIS to Analyze and Predict Invasions. Using ArcGIS to Analyze and Predict Invasions Tamarix forest in riparian zone. Image courtesy of Steve Dewey, Utah State University, United States. top of page Key Investigation Questions: How has the Tamarix plant's invasion proceeded over time? Introduction Tamarix, or saltcedar, grows as a woody shrub or small tree. Top of page Launch ArcGIS and Orient the Map for the Investigation Launch ArcGIS by double-clicking its icon on your desktop or by clicking its icon on the Launch Bar (Win).

Turn on the US Rivers and Tamarix layers by clicking in the checkbox next to their names. Right click on the Tamarix layer and click on Zoom To Layer. Right click the Tamarix layer and click on Zoom To Layer in the popup context box. Turn on the US States layer. top of page Investigate the Tamarix Invasion in the United States Where is the present Tamarix invasion and how far has it spread across the United States? Click once on the Select Feature tool in the toolbar. In general, Tamarix follows rivers. Stop Disasters. Welcome | EOL: Learning and Education Group.