The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles.

After returning from the field, all GPS units used for vegetation mapping were downloaded creating an ESRI ArcMap shapefile for each visit. A database was created including the fields given with additional descriptions provided. Data recorded on field data sheets and notes were entered in the database. A ThumbsPlus 7© database was used to catalog all photos taken during each day of the field visit, allowing data from field data sheets to be digitally associated with each individual photo. Polygons were digitized in ESRI ArcMap for the entirety of Salt River Bay based on an initial photo-interpretation of the digital orthoimage at a scale of no less than 1:200 and no more than 1:7000. The variation in scale proved helpful in defining larger polygons at larger scales and vice versa. Vegetation polygons in general were digitized with a minimum mapping unit of 400 m2. However, 39 polygons were digitized at a scale smaller than the minimum mapping unit. Many of these 39 polygons had a high degree of certainty in their mapping class and location (e.g., mangrove islands, edges of salt ponds, etc.).