To record the locations as precisely as possible, field crews utilize global positioning satellite receivers.  GPS units are digital navigational aids that collect data in two forms.  Points are x and y coordinates for a given site; and Tracks are points collected in series at a user-set time increment.

Points, or WAYPOINTS, are taken at places where miconia are found, and information related to that waypoint is also collected such as tree height, diameters at breast height, and maturity.

TRACK points vary depending on the job.  A ground crew will set the GPS unit to take a point every minute or so, depending on the ground walking speed.  Tracks are also collected on helicopter air surveys, being sure to set the increment a bit faster, about every 10 to 15 seconds, or less.