Browning of freshwaters: Consequences to ecosystem services, underlying drivers, and potential mitigation measures

Emma S. Kritzberg, Eliza Maher Hasselquist, Martin Škerlep, Stefan Löfgren, Olle Olsson, Johanna Stadmark, Salar Valinia, Lars Anders Hansson, Hjalmar Laudon

Research output: Contribution to journalReview articlepeer-review

85 Citations (SciVal)

Abstract

Browning of surface waters, as a result of increasing dissolved organic carbon and iron concentrations, is a widespread phenomenon with implications to the structure and function of aquatic ecosystems. In this article, we provide an overview of the consequences of browning in relation to ecosystem services, outline what the underlying drivers and mechanisms of browning are, and specifically focus on exploring potential mitigation measures to locally counteract browning. These topical concepts are discussed with a focus on Scandinavia, but are of relevance also to other regions. Browning is of environmental concern as it leads to, e.g., increasing costs and risks for drinking water production, and reduced fish production in lakes by limiting light penetration. While climate change, recovery from acidification, and land-use change are all likely factors contributing to the observed browning, managing the land use in the hydrologically connected parts of the landscape may be the most feasible way to counteract browning of natural waters.

Original languageEnglish
Pages (from-to)375-390
Number of pages16
JournalAmbio: a Journal of Human Environment
Volume49
Issue number2
Early online date2019
DOIs
Publication statusPublished - 2020 Feb

Subject classification (UKÄ)

  • Environmental Sciences

Keywords

  • Acid deposition
  • Browning
  • Climate change
  • DOC
  • Iron
  • Land use

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