Citation. Gorham, E.; Sanger, J. 1964. Chlorophyll derivatives in woodland, swamp, and pond soils of Cedar Creek Natural History Area, Minnesota, U.S.A. Pages 1-12 in Y. Miyake and T. Koyama, editor. Recent Researches in the Fields of Hydrosphere, Atmosphere and Nuclear Geochemistry. Maruzen Co. Ltd., Tokyo, Japan.   [1304  CC]

Abstract. Concentrations of chlorophyll derivatives in the organic matter of woodland, swamp, and pond soils are clearly related to waterlogging and level of soil water table. Average amounts of pigment (in arbitrary untis per g ignition loss) are as follows: woodland humus layers 0.5, swamp-hummock peats 0.3, swamp-flat peats 0.8, swamp-hollow peats 1.8, pond muds 9.6. The marked difference in amounts of pigment between pond muds and waterlogged peats of the swamp hollows reflects the much greater pigment concentration in phytoplankton than in the rooted plants of swamp and forest vegetation.

Keywords. chlorophyll derivatives, water table, Cedar Creek Natural History Area (CCNHA)