Properties of some tidal marsh soils of Florida
Coultas, C.L.; Calhoun, F.G.
Soil Science Society of America Journal 40(1): 72-76
Psammaquents, Sulfihemists, and Sulfaquents were found in the tidal marshes of Hernando (Gulf Coast) and Duval (Atlantic Coast) counties, in Florida. They were saline and near neutral in pH and, with the exception of the Psammaquents, contained higher levels of S (2.66-5.19%). Hernando County soils were shallow over limestone and much sandier than those in east Florida. Duval County soil clays were primarily montmorifionite, mica, and kaolinite but Hernando County soil clays were mostly vermiculite-chlorite intergrade and kaolinite-metahalloysite. Except for one of the Psammaquents, the soils contained relatively high levels of organic matter (7.8-28.9% organic C) and extractable bases. Juncus roemerianus Scheele is the principal plant in these marshes. The bulk density of the organic soil layers ranged from 0.13 to 0.36 g/cma, whereas that of the clayey layers was 0.16 to 0.25 g/cm3.