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Effects of Past Global Change on Life (1995) / Chapter Skim
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Pages 141-142

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From page 141...
... 141 PA'l'l'~RNS OF CHANGE IN COAL-SWAMP COMMUNITIES DURING THE PENNSYLVANIAN PERIOD Objectives In this section we focus on the temporal patterns of change in coal swamps. This pattern is examined first at the landscape level-changes that are the easiest to describe and thus to relate to larger questions of environmen tal influence.
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From page 142...
... 5. Sphenopsids are present in coal swamps throughout the Late Carboniferous, but generally at low levels.
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Key Terms

  • western interior
  • late carboniferous
  • coal swamps
  • tree ferns
  • middle pennsylvanian

  • life history
  • species replacement
  • mineral matter
  • late westphalian
  • species turnover

  • upper pennsylvanian
  • intraswamp habitats
  • cordaitean gymnosperms
  • ground cover
  • time scale

  • tree fern
  • ecotonal habitats
  • time intervals
  • seed ferns
  • landscape level

  • medullosan pteridosperms


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