University of Oulu

Lenka Kuglerová, Eliza Maher Hasselquist, Ryan Allen Sponseller, Timo Muotka, Göran Hallsby, Hjalmar Laudon, Multiple stressors in small streams in the forestry context of Fennoscandia: The effects in time and space, Science of The Total Environment, Volume 756, 2021, 143521, ISSN 0048-9697,

Multiple stressors in small streams in the forestry context of Fennoscandia : the effects in time and space

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Author: Kuglerová, Lenka1; Hasselquist, Eliza Maher1,2; Sponseller, Ryan Allen3;
Organizations: 1Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden
2Water Quality Impacts Unit, Natural Resources Institute Finland, Helsinki, Finland
3Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden
4Ecology and Genetics Research Unit, University of Oulu, Oulu, Finland
5Finnish Environment Institute, Freshwater Centre, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.6 MB)
Persistent link:
Language: English
Published: Elsevier, 2021
Publish Date: 2021-03-09


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.

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Series: Science of the total environment
ISSN: 0048-9697
ISSN-E: 1879-1026
ISSN-L: 0048-9697
Volume: 756
Article number: 143521
DOI: 10.1016/j.scitotenv.2020.143521
Type of Publication: A1 Journal article – refereed
Field of Science: 1181 Ecology, evolutionary biology
Funding: This research was supported by the Future Silviculture program, funded by the Knut and Allice Wallenberg Foundation, and the JPI Water Works 2016 and 2018 Co-founded calls (projects SOSTPRO and REFORM WATER).
Copyright information: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (