Abstract

In this paper we describe how forest management practices in Fennoscandian countries, namely Sweden and Finland, expose streams to multiple stressors over space and time. In this region, forestry includes several different management actions and we explore how these may successively disturb the same location over 60-100 year long rotation periods. Of these actions, final harvest and associated road construction, soil scarification, and/or ditch network maintenance are the most obvious sources of stressors to aquatic ecosystems. Yet, more subtle actions such as planting, thinning of competing saplings and trees, and removing logging residues also represent disturbances around waterways in these landscapes. We review literature about how these different forestry practices may introduce a combination of physicochemical stressors, including hydrological change, increased sediment transport, altered thermal and light regimes, and water quality deterioration. We further elaborate on how the single stressors may combine and interact and we consequently hypothesise how these interactions may affect aquatic communities and processes. Because production forestry is practiced on a large area in both countries, the various stressors appear multiple times during the rotation cycles and potentially affect the majority of the stream network length within most catchments. We concluded that forestry practices have traditionally not been the focus of multiple stressor studies and should be investigated further in both observational and experimental fashion. Stressors accumulate across time and space in forestry dominated landscapes, and may interact in unpredictable ways, limiting our current understanding of what forested stream networks are exposed to and how we can design and apply best management practices. (C) 2020 The Authors. Published by Elsevier B.V.

Keywords

Best management practice; Boreal forest; Forestry; Headwaters; Stream networks

Published in

Science of the Total Environment
2021, Volume: 756, article number: 143521
Publisher: ELSEVIER

SLU Authors

• Kuglerova, Lenka

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

• Maher Hasselquist, Eliza

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

• Hallsby, Göran

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

• Laudon, Hjalmar

  • Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss


UKÄ Subject classification

Oceanography, Hydrology, Water Resources
Forest Science


Publication identifier

DOI: https://doi.org/10.1016/j.scitotenv.2020.143521

Permanent link to this page (URI)

https://res.slu.se/id/publ/110239