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Advancing towards functional environmental flows for temperate floodplain rivers.

Daniel S Hayes1, Julia M Brändle2, Carina Seliger3

  • 1CEF - Forest Research Centre, Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017 Lisboa, Portugal; Institute of Hydrobiology and Aquatic Ecosystem Management, Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences, Vienna, Gregor-Mendel-Straße 33, 1180 Wien, Austria.

The Science of the Total Environment
|May 16, 2018
PubMed
Summary
This summary is machine-generated.

Environmental flow regulations must include floodplains to protect river ecosystems. The functional floodplain flow (ff-flow) approach emulates natural flow regimes for effective river management and restoration.

Keywords:
DamsDynamic flowFunctional floodplain flowProcess-orientedRiver restorationWater management

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Area of Science:

  • Ecology
  • Hydrology
  • Environmental Science

Background:

  • River flow alterations due to abstraction, diversion, and storage impact global river systems.
  • Current minimum flow regulations often neglect floodplains, a critical component of riverine ecosystems.
  • Ecological integrity of rivers is threatened by focusing solely on instream criteria.

Purpose of the Study:

  • To identify fundamental principles for determining ecologically relevant environmental flows.
  • To develop a holistic framework for environmental flow assessment in temperate floodplain rivers.
  • To emphasize the importance of the natural flow regime and its components.

Main Methods:

  • Literature review on unimpaired temperate floodplain river functions and processes.
  • Identification of key ecological principles derived from natural flow regimes.
  • Formulation of the process-oriented functional floodplain flow (ff-flow) approach.

Main Results:

  • The natural flow regime, including seasonal variability, magnitude, frequency, and duration, is a primary driver of river ecosystem functions.
  • The ff-flow approach provides a conceptual framework for assessing environmental flows.
  • Ecological principles derived from natural flow regimes are essential for protecting riverine ecosystems.

Conclusions:

  • The ff-flow approach ensures the protection of floodplain rivers impacted by flow regulation.
  • Emulating natural flow regimes with seasonal variability is crucial for ecological health.
  • The presented ecological principles guide the establishment of ecologically relevant environmental flows and restoration efforts.