Field data for the Vegetation Mapping Inventory Project of Casa Grande National Monument

This reference is an assemblage of field data collected as part the baseline vegetation inventory for the park unit. Typical files here are vegetation plot data, accuracy assessment data, field photos, PDF showing locations of vegetation plots and accuracy assessment data, and other data for this type. Field verification of the draft formation map and floristic data collection was conducted simultaneously during March 2008. Crews annotated boundary changes onto hard-copy maps showing imagery overlaid with draft polygons. The monument’s small size allowed for a census-style approach to each minimum mapping unit (polygons) identified. Field edits were subsequently incorporated into the digital draft formation map (shapefile) using ArcGIS. In addition to polygon scale data, 25 plots measuring 20 × 50 m were sampled across both units with an aim to sample each of the community types identifi ed. Plot and polygon data was entered into an Access database and quality checked before data analysis was conducted. In total, 42 polygons were mapped and attributed with National Vegetation Classification Standard alliance-level data or land-cover classes. Urbanized environs outside the monument boundary were assigned one of seven Anderson land use classes. Full descriptions are found in Appendix A, and provide both local and regional context for each vegetation type (to the extent available at the time of this report). Map thematic accuracy was assessed within the total project area by way of a field-based census. Overall thematic map accuracy for the entire effort was assessed at 96%.

Field data for the Vegetation Mapping Inventory Project of Casa Grande National Monument

Collections