Sphagnum decay patterns and bog microtopography in south-eastern Finland

This study addresses differences in Sphagnum decay in the context of variations in physico-chemical peat properties linked to bog microtopography. The decay rates of six Sphagnum species were studied using litter bag techniques at Haukkasuo, a concentric raised bog in south-eastern Finland. The Spha...

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Main Authors: M. Mäkilä, H. Säävuori, A. Grundström, T. Suomi
Format: Article
Language:English
Published: International Mire Conservation Group and International Peatland Society 2018-07-01
Series:Mires and Peat
Subjects:
Online Access:http://mires-and-peat.net/media/map21/map_21_13.pdf
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author M. Mäkilä
H. Säävuori
A. Grundström
T. Suomi
author_facet M. Mäkilä
H. Säävuori
A. Grundström
T. Suomi
author_sort M. Mäkilä
collection DOAJ
description This study addresses differences in Sphagnum decay in the context of variations in physico-chemical peat properties linked to bog microtopography. The decay rates of six Sphagnum species were studied using litter bag techniques at Haukkasuo, a concentric raised bog in south-eastern Finland. The Sphagnum species were buried in their native microhabitats in oxic, intermittently anoxic and anoxic peat layers for one or two years. The hummock species generally decayed at slower rates than species growing in hollows and transitional zones of hollows (lawns). The average mean loss in mass of all Sphagnum species was 17.7 % after the first year and 18.6 % after two years. The mass loss correlated most positively with oxygen, carbon/nitrogen quotient and sodium, and most negatively with nitrogen, carbon, iron and depth in the native microhabitat. Knowledge about the litter quality of Sphagnum species is important for improving our understanding of ecosystem functions in northern peatlands, and particularly in relation to the development of microtopography.
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spelling doaj.art-bdea4352f1c245548be09bea2a0338112023-08-02T01:19:57ZengInternational Mire Conservation Group and International Peatland SocietyMires and Peat1819-754X2018-07-01211311210.19189/MaP.2017.OMB.283Sphagnum decay patterns and bog microtopography in south-eastern FinlandM. Mäkilä0H. Säävuori1A. Grundström2T. Suomi3Geological Survey of Finland, Espoo, FinlandGeological Survey of Finland, Espoo, FinlandGeological Survey of Finland, Espoo, FinlandGeological Survey of Finland, Espoo, FinlandThis study addresses differences in Sphagnum decay in the context of variations in physico-chemical peat properties linked to bog microtopography. The decay rates of six Sphagnum species were studied using litter bag techniques at Haukkasuo, a concentric raised bog in south-eastern Finland. The Sphagnum species were buried in their native microhabitats in oxic, intermittently anoxic and anoxic peat layers for one or two years. The hummock species generally decayed at slower rates than species growing in hollows and transitional zones of hollows (lawns). The average mean loss in mass of all Sphagnum species was 17.7 % after the first year and 18.6 % after two years. The mass loss correlated most positively with oxygen, carbon/nitrogen quotient and sodium, and most negatively with nitrogen, carbon, iron and depth in the native microhabitat. Knowledge about the litter quality of Sphagnum species is important for improving our understanding of ecosystem functions in northern peatlands, and particularly in relation to the development of microtopography.http://mires-and-peat.net/media/map21/map_21_13.pdfchemical and physical peat propertiesHaukkasuohollowhummocklawnlitter bag
spellingShingle M. Mäkilä
H. Säävuori
A. Grundström
T. Suomi
Sphagnum decay patterns and bog microtopography in south-eastern Finland
Mires and Peat
chemical and physical peat properties
Haukkasuo
hollow
hummock
lawn
litter bag
title Sphagnum decay patterns and bog microtopography in south-eastern Finland
title_full Sphagnum decay patterns and bog microtopography in south-eastern Finland
title_fullStr Sphagnum decay patterns and bog microtopography in south-eastern Finland
title_full_unstemmed Sphagnum decay patterns and bog microtopography in south-eastern Finland
title_short Sphagnum decay patterns and bog microtopography in south-eastern Finland
title_sort sphagnum decay patterns and bog microtopography in south eastern finland
topic chemical and physical peat properties
Haukkasuo
hollow
hummock
lawn
litter bag
url http://mires-and-peat.net/media/map21/map_21_13.pdf
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AT hsaavuori sphagnumdecaypatternsandbogmicrotopographyinsoutheasternfinland
AT agrundstrom sphagnumdecaypatternsandbogmicrotopographyinsoutheasternfinland
AT tsuomi sphagnumdecaypatternsandbogmicrotopographyinsoutheasternfinland