Great Basin National Park Vegetation Map

Biological Resources // Environmental Services

Logan Simpson assigned a team of 12 biologists to determine the different plant community associations (based on the US National Vegetation Classification) that are present at 900 accuracy assessment plots distributed across Great Basin National Park in Nevada. Biological resource specialists navigated to randomly generated locations and recorded precise GPS data, the dominant plant species, vegetal cover by strata, slope and aspect, and photographed the plots. Teams used high-resolution aerial imagery to identify the target associations to sample. Fieldwork was executed efficiently by using ArcGIS-driven modeling, which determined the safest and best cross-country routes through extensive wilderness areas in rugged terrain, which at times reached more than 13,000 feet in elevation. The final report enhanced the vegetation map of the park and predicted vegetation map classes at 84 percent accuracy.