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Revegetation dynamics after 15 years of rewetting in two extracted peatlands in Sweden

Kozlov, S.A. and Lundin, Lars and Avetov, N.A. (2016). Revegetation dynamics after 15 years of rewetting in two extracted peatlands in Sweden. Mires and peat. 18, 1-17
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Abstract

The restoration of extracted peatlands poses challenges with regard to their recolonisation by vegetation. The most significant problems are unstable water levels, destroyed propagule bank, and temperature fluctuations on bare peat surfaces. Rewetting is considered necessary for the re-establishment of peat-forming vegetation. Revegetation was investigated in a long-term field study at two rewetted extracted peatland sites in south-central Sweden, namely Västkärr (originally a lagg fen) and Porla (originally a bog). Both sites were expanses of bare peat before rewetting.Rewetting procedures were applied in 1999 and strongly promoted plant colonisation. At Västkärr, colonisation started in the first year after rewetting, mostly by species that were not found during repeat vegetation surveys 15 years later. By 2014, Västkärr was a shallow lake surrounded by mesotrophic and eutrophic vegetation with species such as Carex rostrata, Lemna minor, Typha latifolia, Phalaris arundinacea and Phragmites australis. Revegetation of the Porla site was slower and started with Eriophorum vaginatum and Polytrichum spp. Sphagnum mosses appeared after six years and had established quite well after 13 years. A residual Sphagnum peat layer, inflowing surface water and groundwater provided spatially variable nutrient conditions. Sphagnum species and E. vaginatum established in nutrient-poor areas, while C. rostrata, P. australis and Eriophorum angustifolium colonised more nutrient-rich locations.

Authors/Creators:Kozlov, S.A. and Lundin, Lars and Avetov, N.A.
Title:Revegetation dynamics after 15 years of rewetting in two extracted peatlands in Sweden
Series/Journal:Mires and peat (BIB11750279)
Year of publishing :2016
Volume:18
Page range:1-17
Number of Pages:17
Publisher:International Peatland Society (IPS), International Mire Conservation Group (IMCG).
ISSN:1819-754X
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Agrovoc terms:peatlands, revegetation
Keywords:biodiversity, hydrology, nutrient status, re-vegetation, water chemistry
URN:NBN:urn:nbn:se:slu:epsilon-e-3975
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3975
Additional ID:
Type of IDID
Web of Science (WoS)000388384500005
DOI10.19189/MaP.2015.OMB.204
ID Code:14076
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:23 Feb 2017 10:05
Metadata Last Modified:23 Feb 2017 10:08

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