Indirect regulation of heterotrophic peat soil respiration by water level via microbial community structure and temperature sensitivity

Mäkiranta, Päivi; Laiho, Raija; Fritze, Hannu; Hytönen, Jyrki; Laine, Jukka; Minkkinen, Kari

doi:10.1016/j.soilbio.2009.01.004

Cited by 147 publications

(121 citation statements)

References 44 publications

Supporting

Mentioning

103

Contrasting

Order By: Relevance

“…In contrast, in this study the water table depth did not impact on the surface peat moisture content or affect the rate of heterotrophic respiration suggesting that the relationship between the water table depth and the microbial respiration was not constant along the whole soil profile or was prevalent to a certain depth only, as has previously been found in temperature and boreal wetlands (Chimner and Cooper 2003;Mäkiranta et al 2009). However, over long time-scales, a relationship between the water table depth and CO 2 emissions is more likely to be present ) and the short duration of this measurement campaign might have prevented the appearance of a clear pattern between the position of the water table and CO 2 emissions.…”

Section: Environmental Controls Of Co 2 Emissionscontrasting

confidence: 75%

High heterotrophic CO2 emissions from a Malaysian oil palm plantation during dry-season

Matysek

Evers

Samuel

et al. 2017

Wetlands Ecol Manage

View full text Add to dashboard Cite

Tropical peatlands are currently being rapidly cleared and drained for the establishment of oil palm plantations, which threatens their globally significant carbon sequestration capacity. Large-scale land conversion of tropical peatlands is important in the context of greenhouse gas emission factors and sustainable land management. At present, quantification of carbon dioxide losses from tropical peatlands is limited by our understanding of the relative contribution of heterotrophic and autotrophic respiration to net peat surface CO 2 emissions. In this study we separated heterotrophic and autotrophic components of peat CO 2 losses from two oil palm plantations (one established in '2000' and the other in 1978, then replanted in '2006') using chamber-based emissions sampling along a transect from the rooting to non-rooting zones on a peatland in Selangor, Peninsular Malaysia over the course of 3 months (June-August, 2014). Collar CO 2 measurements were compared with soil temperature and moisture at site and also accompanied by depth profiles assessing peat C and bulk density. The soil respiration decreased exponentially with distance from the palm trunks with the sharpest decline found for the plantation with the younger palms with overall fluxes of 1341 and 988 mg CO 2 m -2 h -1 , respectively, at the 2000 and 2006 plantations, respectively. The mean heterotrophic flux was 909 ± SE 136 and 716 ± SE 201 mg m -2 h -1 at the 2000 and 2006 plantations, respectively. Autotrophic emissions adjacent to the palm trunks were 845 ± SE 135 and 1558 ± SE 341 mg m -2 h -1 at the 2000 and 2006 plantations, respectively. Heterotrophic CO 2 flux was positively related to peat soil moisture, but not temperature. Total peat C stocks were 60 kg m -2 (down to 1 m depth) and did not vary among plantations of different ages but SOC concentrations declined significantly with depth at both plantations

show abstract

Section: Environmental Controls Of Co 2 Emissionscontrasting

confidence: 75%

High heterotrophic CO2 emissions from a Malaysian oil palm plantation during dry-season

Matysek

Evers

Samuel

et al. 2017

Wetlands Ecol Manage

View full text Add to dashboard Cite

show abstract

“…1-8 %, Figure 6) was sufficient to stimulate soil respiration at a high rate, but as seen in Figure 6 the Majnegården soil suffered from hypoxia at 5 cm tension and the soil respiration was hampered. There was no significant difference in CO 2 emission between the 40 and 80 cm tension in the Majnegården soil in the incubation experiment and optimum conditions for soil respiration could maybe be achieved with a tension between 40 and 80 cm as in the studies of Mäkiranta et al (2009). Moisture was probably a limiting factor with tensions below 80 cm.…”

Section: Effect Of Water Table Regulation On Emission Ratesmentioning

confidence: 72%

“…Optimal conditions for soil respiration could probably be achieved with tensions lower than 40 cm water column since the soil was quite dry with higher tensions (air-filled pore space ≥23 %, Figure 6). The findings in the lysimeter study, with highest CO 2 emissions at the intermediate water Lafleur et al (2005) and Mäkiranta (2009). Berglund (1996) showed that plant growth was better at high water tables (40 cm compared to 60 and 70 cm) on peat soils with similar pore size distribution as Örke, but compacted peat soil types required deeper drainage in order to avoid aeration problems.…”

Section: Effect Of Water Table Regulation On Emission Ratesmentioning

confidence: 95%

“…Mundel (1976) reported that CO 2 release peaked at 90 cm drainage depth in lysimeter experiments, whereas Wessolek et al (2002) recorded peak CO 2 release between matric suction corresponding to drainage depths of 10 and 60 cm in incubation experiments. Mäkiranta (2009) found that the instantaneous effect of water level followed a Gaussian form with the highest respiration with a water level of 61 cm. Renger et al (2002) showed that CO 2 emissions doubled with the groundwater level at 80 cm depth compared with 30 cm depth.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Influence of water table level and soil properties on emissions of greenhouse gases from cultivated peat soil

Berglund

2011

Soil Biology and Biochemistry

138

View full text Add to dashboard Cite

A lysimeter method using undisturbed soil columns was used to investigate the effect of water table depth and soil properties on soil organic matter decomposition and greenhouse gas (GHG) emissions from cultivated peat soils. The study was carried out using cultivated organic soils from two locations in Sweden: Örke, a typical cultivated fen peat with low pH and high organic matter content and Majnegården, a more uncommon fen peat type with high pH and low organic matter content. Even though carbon and nitrogen contents differ greatly between the sites, carbon and nitrogen density are quite similar. A drilling method with minimal soil disturbance was used to collect 12 undisturbed soil monoliths (50 cm high, ⌀29.5 cm) per site. They were sown with ryegrass (Lolium perenne) after the original vegetation was removed. The lysimeter design allowed the introduction of water at depth so as to maintain a constant water table at either 40 cm or 80 cm below the soil surface. CO 2 , CH 4 and N 2 O emissions from the lysimeters were measured weekly and complemented with incubation experiments with small undisturbed soil cores subjected to different tensions (5, 40, 80 and 600 cm water column). CO 2 emissions were greater from the treatment with the high water table level (40 cm) compared with the low level (80 cm). N 2 O emissions peaked in springtime and CH 4 emissions were very low or negative. Estimated GHG emissions during one year were between 2.70 and 3.55 kg CO 2 equivalents m -2 . The results from the incubation experiment were in agreement with emissions results from the lysimeter experiments. We attribute the observed differences in GHG emissions between the soils to the contrasting dry matter liability and soil physical properties. The properties of the different soil layers will determine the effect of water table regulation. Lowering the water table without exposing new layers with easily decomposable material would have a limited effect on emission rates.

show abstract

“…This drawdown affects not only peatland structures, such as above and below ground communities Jaatinen et al 2007), but also ecosystem functions such as soil respiration, nutrient circulation and accumulation of peat and C (Braekke 1987;Martikainen et al 1995;Mäkiranta et al 2009;Kareksela et al 2014). As the average water table level could be re-established and maintained for 10 years, restoration of studied peatlands was successful in regaining the single most important condition needed for further recovery of ecosystem.…”

Section: Discussionmentioning

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

View full text Add to dashboard Cite

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

show abstract

Indirect regulation of heterotrophic peat soil respiration by water level via microbial community structure and temperature sensitivity

Cited by 147 publications

References 44 publications

High heterotrophic CO2 emissions from a Malaysian oil palm plantation during dry-season

High heterotrophic CO2 emissions from a Malaysian oil palm plantation during dry-season

Influence of water table level and soil properties on emissions of greenhouse gases from cultivated peat soil

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

Contact Info

Product

Resources

About