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Properties of Some Tidal Marsh Soils of Florida¹

ABSTRACT

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 montmorillonite, 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/cm³, whereas that of the clayey layers was 0.16 to 0.25 g/cm³.

¹ Contribution from the Soil Science Department, Florida Agric. Exp. Stn., Gainesville, 32611, as Journal Series paper 5881.

² Associate Professor Earth and Plant Sciences Dep., Florida A & M Univ., Tallahassee, Fla., and Assistant Professor of Soil Taxonomy, Soil Science Dep., Gainesville, Florida.

Received for publication April 16, 1975. Accepted for publication September 12, 1975.