LTER Georgia Coastal Ecosystems - Crab population monitoring: Spring 2002 mid-marsh and creekbank crab abundances based on hole counts at GCE marsh, sites 1-10

This data set is the Spring 2002 estimate of crab densities at the GCE-LTER
marsh sites used for population monitoring. Crab abundance was determined by
counting the number of crab holes within a 625 cm^2 quadrat and converting the
counts to number per square meter. Counts were made in the mid-marsh and
creekbank zones (n = 4 per zone) at all sites. This method does not
differentiate which species made a particular hole and therefore only estimates
total crab abundance. Plugged holes were excluded from the counts. Mean
density across all sites and zones was 296 m^-2 (+/- 81.0 s.d.).

Overall bounding box describing the geographic region within the Georgia
Coastal Ecosystems LTER study domain represented in data set INV-GCEM-0210b