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A Comparison of Fish and Invertebrate Community Composition in Tidal Freshwater and Oligohaline Marsh Systems

  • William E. Odum
  • Lawrence P. Rozas
  • Carole C. McIvor

Abstract

Tidal freshwater wetlands and associated open water are a distinctive type of estuarine ecosystem located upstream from tidal saline wetlands (salt marshes) and downstream from non-tidal freshwater wetlands (Figure 46.1). They are characterized by near freshwater conditions (average annual salinity of 0.5 ppt or below) except during periods of extended drought, but they also have a daily, lunar tidal fluctuation as a result of their position, typically at the upper end of the estuary. In a classification system based on salinity, these wetlands lie between the oligohaline zone and non-tidal freshwater.

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Copyright information

© Donal D. Hook 1988

Authors and Affiliations

  • William E. Odum
  • Lawrence P. Rozas
  • Carole C. McIvor

There are no affiliations available

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