Measuring restoration progress using pore- and surface-water chemistry across a chronosequence of formerly afforested blanket bogs

Journal of Environmental Management
Paul P J GaffneyRoxane Andersen

Abstract

During the restoration of degraded bogs and other peatlands, both habitat and functional recovery can be closely linked with nutrient cycling, which is reflected in pore- and surface-water chemistry. Several peatland restoration studies have shown that the time required for recovery of target conditions is slow (>10 years); for heavily-impacted, drained and afforested peatlands of northern Scotland, recovery time is unknown. We monitored pore- and surface-water chemistry across a chronosequence of formerly drained, afforested bog restoration sites spanning 0-17 years, using a space-for-time substitution, and compared them with open blanket bog control sites. Our aims were to measure rate of recovery towards bog conditions and to identify the best suite of water chemistry variables to indicate recovery. Our results show progress in recovery towards bog conditions over a 0-17 year period post-restoration. Elements scavenged by trees (Mg, Na, S) completely recovered within that period. Many water chemistry variables were affected by the restoration process itself, but recovered within 11 years, except ammonium (NH4+), Zn and dissolved organic carbon (DOC) which remained elevated (when compared to control bogs) 17 years post restor...Continue Reading

Citations

Jul 9, 2020·The Science of the Total Environment·Paul P J GaffneyRoxane Andersen
Jan 10, 2021·The Science of the Total Environment·T HowsonJ Holden

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