A comparison of the abundance and diversity of fossil pigments in wetland and woodland humus layers.

Jon E. Sanger, Eville Gorham

Research output: Contribution to journalArticlepeer-review


Describes a study in Minnesota showing that the preservation of photosynthetic pigments or their derivatives deposited in woodland humus layers and bog or swamp peats depends greatly on the degree of soil waterlogging on approximately neutral to moderately acid sites. Highly acid Sphagnum bogs do not favour preservation to the same degree, although pigment diversity is about equal in Thuja occidentalis/Larix laricina swamps and Picea mariana/Sphagnum bogs. Analysis of fossil pigments can provide evidence of swamp or bog intervals in the evolution of aquatic ecosystems.
Original languageUndefined/Unknown
Pages (from-to)605-611
Number of pages7
Issue number3
StatePublished - 1973


  • Fossil pigments in lake sediments as indicators of productivity, evolution, eutrophication and sources of organic matter
  • Woodland ecology

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