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1 results

  • 5 - Community Ecology of Salt Marshes

  • from Part I - Marsh Function
  • Edited by Duncan M. FitzGerald, Boston University, Zoe J. Hughes, Boston University
  • Book:
    Salt Marshes
    Published online:
    19 June 2021
    Print publication:
    22 April 2021, pp 82-112

  • Summary

    Salt marshes have been useful study systems for community ecologists. They are amenable to experimental manipulation, and the simplicity and strong abiotic gradients of salt marshes lead to clear patterns and experimental outcomes. Many early ecologists believed that salt marsh ecosystems were primarily controlled by bottom-up factors (i.e., that nutrients, salinity, and other abiotic factors were the primary factors regulating productivity, and that productivity in turn regulated ecosystem trophic structure). More recently, many ecologists have argued that consumers have an important role in structuring salt marsh ecosystems through “top-down” processes. A simple conceptual approach, which we take here, is to think of salt marsh communities as being structured by bottom-up, top-down, and non-trophic processes.