Oyster shell heights in June - November 2017 among previously documented oiled and non-oiled reefs in Louisiana, Alabama, and the Florida panhandle

Shell heights of up to 20 live oysters per size class (spat, seed, market) found in oyster reefs sampled in late spring (June), summer (June-September), and fall (September-November) 2017. Four embayments were sampled from Louisiana to the Florida panhandle, with sites that were previously oiled or non-oiled after the Deepwater Horizon Oil Spill. Within oiled and non-oiled sites, oyster quadrat samples were taken from intertidal, nearshore (along the marsh edge) and subtidal areas, and also from mesohaline and high salinity sites. The top 10 cm of material was collected from the quadrats and returned to the lab for measurement of shell height by calipers.