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Updated: Oct 11, 2025

Mesocosm-Scale Constructed Wetland Design for Wastewater Treatment
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From Wastelands to Wetlands.

William H Patrick1

  • 1Wetland Biogeochemistry Institute, Louisiana State Univ., Baton Rouge, LA, 70803.

Journal of Environmental Quality
|December 7, 2021
PubMed
Summary

Early European settlers viewed wetlands as wastelands. Today, these vital ecosystems provide crucial benefits like water purification and flood control, despite ongoing conversion challenges.

Area of Science:

  • Environmental Science
  • Ecology
  • Conservation Biology

Background:

  • European settlers in North America encountered extensive wetlands, initially perceiving them as wastelands.
  • Historically, these valuable water-dominated lands were undervalued and often drained for agriculture and development.
  • Recent decades have highlighted the critical ecological and societal benefits of wetlands.

Purpose of the Study:

  • To underscore the historical perception of wetlands versus their recognized modern-day value.
  • To emphasize the significant ecological services wetlands provide.
  • To discuss the ongoing challenges in wetland conservation and regulation.

Main Methods:

  • Historical land use analysis.
  • Review of ecological functions of wetlands.

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  • Examination of regulatory frameworks like Section 404 of the Federal Clean Water Act.

    • Main Results:

    • Approximately half of North America's original wetlands have been converted to non-wetland uses, primarily for agriculture.
    • Wetlands provide essential ecosystem services including water quality improvement, flood control, storm abatement, and habitat for unique species.
    • Current regulations, such as Section 404, face challenges in effectively protecting all critical wetland areas.

    Conclusions:

    • Wetlands are ecologically and societally indispensable resources, not wastelands.
    • Continued wetland conversion poses significant environmental risks.
    • Effective and comprehensive regulatory strategies are needed to ensure the long-term protection of remaining wetlands.