<p>Perched sand dunes are vulnerable ecosystems along the Great Lakes, including Grand Sable Dunes in Pictured Rocks National Lakeshore. Spotted knapweed is a non-native plant species that has c
This data release contains three datasets for the Pitcher's thistle (Cirsium pitcheri) reintroduction experiment, started in 1994, at the Portage Lakefront unit (formerly called Ogden Dunes), Indiana
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master...
The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master...
