Vegetation and carbon gas dynamics under a changed hydrological regime in central European peatlands

Urbanová, Zuzana; Picek, Tomáš; Hájek, Tomáš; Bufková, Ivana; Tuittila, Eeva‐Stiina

doi:10.1080/17550874.2012.688069

Cited by 29 publications

(19 citation statements)

References 46 publications

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“…The within-site spatial heterogeneity in the effects of drainage is clearly reflected in the functionality of peatlands such as production of methane (Minkkinen and Laine 2006). However, the effect of such within-site variation in the degree of degradation on plant community composition is still poorly understood (see also Urbanová et al 2012). …”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, most of the original peatland species were still present in low abundances at most of the drained sites at the 5-15 m distances from the ditch (Supplement 1). Hence, it appears that it is not only the least degraded areas (see Urbanová et al 2012) within drained sites that can provide refugia for the original peatland species. Interestingly, while many original peatland species were present in low abundances outside the most degraded plots, there were a few species typical to pristine peatlands (e.g.…”

Section: Effect Of Restorationmentioning

confidence: 99%

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Fighting carbon loss of degraded peatlands by jump-starting ecosystem functioning with ecological restoration

Kareksela

Haapalehto

Juutinen

et al. 2015

Science of The Total Environment

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Esitetään Jyväskylän yliopiston matemaattis-luonnontieteellisen tiedekunnan suostumuksella julkisesti tarkastettavaksi yliopiston vanhassa juhlasalissa S212 maaliskuun 28. päivänä 2014 kello 12.Academic dissertation to be publicly discussed, by permission of the Faculty of Mathematics and Science of the University of Jyväskylä, in building Seminarium, auditorium S212, on March 28, 2014 at 12 o'clock noon. The wide and rapidly increasing human land use has caused extensive degradation of natural landscapes, extinctions of species and loss of ecosystem functions and services. Subsequently, ecological restoration has been raised to a major global strategy for safeguarding ecosystem values. However, concerns have been raised on the real potential of restoration to re-establish ecosystem structures and functions. Here, I studied the effects of ecological restoration on the structure and functions of forestry drained boreal peatland ecosystems in southern Finland. To better understand structural and functional changes, the effects of drainage and restoration on water table level, pore water chemistry and peat chemistry were explored as well. Drainage lowered the water table and induced changes in pore water chemistry and plant community composition. Drainage retarded the accumulation of surface peat and resulted in significant reduction in the sequestration of carbon therein. Re-establishment of water table level and significant recovery of pore water and surface peat chemistry were observed after restoration. Restoration induced the recovery of ecosystem structure i.e. plant community composition towards the target. The recovery was dependent on the within-site degree of ecosystem degradation. The original ecosystem structure was not needed for the re-establishment of important peatland ecosystem functionality in terms of surface peat accumulation. However, a more profound recovery of structure and conditions may be needed for some other functions like surface peat carbon sequestration to recover. Overall, my results are promising from the perspective of restoration. However, they highlight the need for patience in drawing conclusions on the effectiveness of restoration. Practitioners should also be prepared for temporarily increased leaching of nutrients into downstream water courses. UNIVERSITY

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Section: Discussionmentioning

confidence: 99%

Section: Effect Of Restorationmentioning

confidence: 99%

Fighting carbon loss of degraded peatlands by jump-starting ecosystem functioning with ecological restoration

Kareksela

Haapalehto

Juutinen

et al. 2015

Science of The Total Environment

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“…Some peatlands underwent extensive changes that do not allow restoring them, other sites can be successfully revitalized. From the beginning of the twenty-first century, drained peatlands in the Czech Republic started to be intensively restored (Urbanová et al 2012). We selected two nearby peatlands, one intact and one degraded due to 15-year long draining, with following two-year restoration to compare methane emissions.…”

mentioning

confidence: 99%

“…We selected two nearby peatlands, one intact and one degraded due to 15-year long draining, with following two-year restoration to compare methane emissions. Little is known about in situ methane fluxes from Central European peat bogs and only a few studies compared fluxes between natural, degraded and restored bogs (Hahn-Schöfl et al 2011, Urbanová et al 2012). Our objective was (i) to evaluate seasonal variability in methane fluxes at the two contrasting peat bogs, and (ii) to study controls on methane fluxes.…”

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confidence: 99%

Dynamics of methane fluxes from two peat bogs in the Ore Mountains, Czech Republic

Bohdálková¹,

Čuřík²,

Kubêna³

et al. 2013

PLANT SOIL ENVIRON

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Methane fluxes were studied at two high-elevation oligotrophic peat bogs in the Ore Mts., Czech Republic. The Bukova dolina Bog was drained 15 years ago and 2 years ago was partly restored, whereas the Brumiste Bog is an intact peatland. Draining led to a change of vegetation structure, dominated by Molinia caerulea, Carex sp., and forestation by Norway spruce. Methane fluxes were measured monthly from April to November 2011 using a closed chamber. Temperature and presence of Carex were significant controls on methane fluxes. Peat depth, water table and the presence of other plant species had no significant effect on CH 4 emissions. Methane emissions ranged from 9 to 2700 mg/m 2 /day at the degraded and from 3 to 260 mg/m 2 /day at the intact bog. In general, the degraded peat bog emitted three times more methane compared to the intact peat bog, likely due to vegetation changes after longterm artificial draining.

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“…Our review of paired studies which directly compare rewetted and drained environments shows that rewetted boreal and temperate organic soils have an average of 23 and 64 times the CH 4 emissions of their drained counterparts, respectively (Table S1 in the Supplement). However these differences in CH 4 emissions are highly variable and some studies show a decrease in CH 4 emissions after wetting (Christen et al, 2016;Juottonen et al, 2012;Urbanová et al, 2012;Waddington and Day, 2007). The few studies which compare emissions from rewetted and undisturbed wetlands (Table S1) show a wide range of results with rewetted wetland emissions < 1 % (Juottonen et al, 2012), 19 % (Beetz et al, 2013, 43 % (Urbanová et al, 2012), and127 % (Christen et al, 2016) of the emissions observed in undisturbed wetlands.…”

Section: Introductionmentioning

confidence: 99%

Low methane emissions from a boreal wetland constructed on oil sand mine tailings

2020

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Abstract. A 58 ha mixed upland and lowland boreal plains watershed called the Sandhill Fen Watershed was constructed between 2008 and 2012. In the years following wetting in 2013, methane emissions were measured using manual chambers. The presence of vegetation with aerenchymous tissues and saturated soils were important factors influencing the spatial variability of methane emissions across the constructed watershed. Nevertheless, median methane emissions were equal to or less than 0.51 mg CH4 m−2 h−1 even from the saturated organic soils in the lowlands. Although overall methane emissions remained low, observations of methane ebullition increased over the 3 study years. Ebullition events occurred in 10 % of measurements in 2013, increasing to 21 % and 27 % of measurements in 2014 and 2015, respectively, at the plots with saturated soils. Increasing metal ion availability and decreasing sulfur availability was measured using buried ion exchange resins at both seasonal and annual timescales potentially as a result of microbial reduction of these ions. Using principle component analysis, methane fluxes had a significant positive correlation to the leading principle component which was associated with increasing ammonium, iron, and manganese and decreasing sulfur availability (r=0.31, p<0.001). These results suggest that an abundance of alternative inorganic electron acceptors may be limiting methanogenesis at this time.

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Vegetation and carbon gas dynamics under a changed hydrological regime in central European peatlands

Cited by 29 publications

References 46 publications

Fighting carbon loss of degraded peatlands by jump-starting ecosystem functioning with ecological restoration

Fighting carbon loss of degraded peatlands by jump-starting ecosystem functioning with ecological restoration

Dynamics of methane fluxes from two peat bogs in the Ore Mountains, Czech Republic

Low methane emissions from a boreal wetland constructed on oil sand mine tailings

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