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Impacts of rewetting on peat, hydrology and water chemical composition over 15 years in two finished peat extraction areas in Sweden

Lundin, Lars and Nilsson, Torbjörn and Jordan, Sabine and Lode, Elve and Strömgren, Monika (2017). Impacts of rewetting on peat, hydrology and water chemical composition over 15 years in two finished peat extraction areas in Sweden. Wetlands ecology and management. 24:4, 405-419
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Official URL: http://dx.doi.org/10.1007/s11273-016-9524-9

Abstract

Restoration of wetlands is a high priority world-wide. Peat extraction areas can be restored by rewetting, however affecting the environment. It could be expected to turn the drained peat-cutover area from a source to a sink of most elements. This study examined effects of such rewetting on peat, hydrology and water chemistry over 15 years at two sites in Sweden; the nutrient-poor Porla peatland and the nutrient-rich Vastkarr peatland. Rewetting caused minor changes to peat chemistry, but at the Vastkarr site ammonium concentrations increased in superficial peat layers while nitrate decreased. In terms of hydrology, rewetting of the Porla site decreased annual runoff and both high and low discharges. Water pH at the Porla site stayed fairly stable, but at the Vastkarr site pH, after an initial 4 years dip, gradually increased to higher values than before rewetting. Water colour and organic matter content were fairly stable, but slightly lower values were found after 15 years than in initial 4-5 years. The concentrations of base cations and of inorganic N were lower after rewetting, while total P was higher. However, these impacts could change from an initial phase as the wetlands in the long-term perspective develop into mires.

Authors/Creators:Lundin, Lars and Nilsson, Torbjörn and Jordan, Sabine and Lode, Elve and Strömgren, Monika
Title:Impacts of rewetting on peat, hydrology and water chemical composition over 15 years in two finished peat extraction areas in Sweden
Series/Journal:Wetlands ecology and management (1572-9834)
Year of publishing :2017
Volume:24
Number:4
Page range:405-419
Number of Pages:15
Publisher:Springer Verlag
ISSN:1572-9834
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:P Natural resources > P10 Water resources and management
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
Agrovoc terms:wetlands, peat, chemical composition
Keywords:After-use, Hydrochemistry, Peatland, Restoration, Wetland
URN:NBN:urn:nbn:se:slu:epsilon-e-4598
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4598
Additional ID:
Type of IDID
Web of Science (WoS)000406288200003
ID Code:14864
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:09 Jan 2018 12:13
Metadata Last Modified:11 Jan 2018 11:39

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