Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing

Revegetation of eroded bare peat is commonly facilitated by the import of artificial resources and genetic material (lime, seed and fertiliser), but such techniques are less suitable for remote upland locations with sensitive local flora. Using a BACI (Before-After-Control-Impact) approach, this stu...

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Main Author: S.H. Watts
Format: Article
Language:English
Published: International Mire Conservation Group and International Peatland Society 2020-12-01
Series:Mires and Peat
Subjects:
Online Access:http://mires-and-peat.net/media/map26/map_26_29.pdf
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author S.H. Watts
author_facet S.H. Watts
author_sort S.H. Watts
collection DOAJ
description Revegetation of eroded bare peat is commonly facilitated by the import of artificial resources and genetic material (lime, seed and fertiliser), but such techniques are less suitable for remote upland locations with sensitive local flora. Using a BACI (Before-After-Control-Impact) approach, this study explores the effectiveness of alternative treatments (heather (Calluna vulgaris) brash cut onsite and two types of geotextiles) in the following four years at grazed and ungrazed sites at Ben Lawers National Nature Reserve. After an initial colonisation, the mean vegetation cover in grazed plots degraded to 9.4 %, demonstrating that restoration using these methods is impeded by trampling impacts of large herbivores. The vegetation cover and number of indicator species increased annually at the ungrazed site. A significantly greater cover (>85 %) occurred at plots where thick brash (>85 % ground cover) had been topped with GeoJute netting, but plots with only heather brash still reached 56.6 % cover. It provided a suitable seed source and colonising substrate for appropriate local peatbog species, while additional planting of C. vulgaris cuttings did not significantly increase vegetation cover in comparison to unplanted plots. These results show that short-term restoration of bare peat can be promoted using minimal interventions and onsite resources in the absence of grazing.
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spelling doaj.art-4c5b9660d4f04b48954c4056612c71532023-09-02T17:12:21ZengInternational Mire Conservation Group and International Peatland SocietyMires and Peat1819-754X2020-12-01262912010.19189/MaP.2019.AJB.StA.1902Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazingS.H. Watts0Biological and Environmental Sciences, School of Natural Sciences, University of Stirling, UKRevegetation of eroded bare peat is commonly facilitated by the import of artificial resources and genetic material (lime, seed and fertiliser), but such techniques are less suitable for remote upland locations with sensitive local flora. Using a BACI (Before-After-Control-Impact) approach, this study explores the effectiveness of alternative treatments (heather (Calluna vulgaris) brash cut onsite and two types of geotextiles) in the following four years at grazed and ungrazed sites at Ben Lawers National Nature Reserve. After an initial colonisation, the mean vegetation cover in grazed plots degraded to 9.4 %, demonstrating that restoration using these methods is impeded by trampling impacts of large herbivores. The vegetation cover and number of indicator species increased annually at the ungrazed site. A significantly greater cover (>85 %) occurred at plots where thick brash (>85 % ground cover) had been topped with GeoJute netting, but plots with only heather brash still reached 56.6 % cover. It provided a suitable seed source and colonising substrate for appropriate local peatbog species, while additional planting of C. vulgaris cuttings did not significantly increase vegetation cover in comparison to unplanted plots. These results show that short-term restoration of bare peat can be promoted using minimal interventions and onsite resources in the absence of grazing.http://mires-and-peat.net/media/map26/map_26_29.pdfconservation managementherbivore exclusionpeatlandrestorationvegetation cover
spellingShingle S.H. Watts
Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
Mires and Peat
conservation management
herbivore exclusion
peatland
restoration
vegetation cover
title Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
title_full Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
title_fullStr Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
title_full_unstemmed Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
title_short Revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
title_sort revegetation of upland eroded bare peat using heather brash and geotextiles in the presence and absence of grazing
topic conservation management
herbivore exclusion
peatland
restoration
vegetation cover
url http://mires-and-peat.net/media/map26/map_26_29.pdf
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