LTER GA Coastal Ecos. - Fall 2004 crab population monitoring: mid-marsh and creekbank abundance based on crab hole counts at GCE marsh, monitoring sites 1-10

This data set is the Fall 2004 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 154 m^-2 (+/- 188 s.d).

Overall bounding box describing the geographic region within the Georgia
Coastal Ecosystems LTER study domain represented in data set INV-GCEM-0411b