Growing season carbon gas exchange from peatlands used as a source of vegetation donor material for restoration

Murray, Kimberley R.; Borkenhagen, Andrea K.; Cooper, David J.; Strack, Maria

doi:10.1007/s11273-017-9531-5

Cited by 13 publications

(12 citation statements)

References 39 publications

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“…The disruption of soil structure and microbial communities resets the ecological clock, thus reducing or eliminating the beneficial effects of time on soil biogeochemical processes (Janzen 2016). Several studies indicate that transplanting intact wetland soil and/or vegetation to wetland restoration or creation sites reduces GHG emissions, compared to common practices noted above (Wilhelm et al 2015;Murray et al 2017;Cagampan and Waddington 2008;Waddington et al 2009). Brown and Bedford (1997) found that transplanting intact blocks of wetland soil results in more successful establishment of wetland species, while reducing the presence of invasive plants during restoration of drained wetlands.…”

Section: Local and Project-level Strategies And Best Management Practmentioning

confidence: 99%

Wetlands In a Changing Climate: Science, Policy and Management

Moomaw

Chmura

Davies³

et al. 2018

Wetlands

299

142

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Part 1 of this review synthesizes recent research on status and climate vulnerability of freshwater and saltwater wetlands, and their contribution to addressing climate change (carbon cycle, adaptation, resilience). Peatlands and vegetated coastal wetlands are among the most carbon rich sinks on the planet sequestering approximately as much carbon as do global forest ecosystems. Estimates of the consequences of rising temperature on current wetland carbon storage and future carbon sequestration potential are summarized. We also demonstrate the need to prevent drying of wetlands and thawing of permafrost by disturbances and rising temperatures to protect wetland carbon stores and climate adaptation/resiliency ecosystem services. Preventing further wetland loss is found to be important in limiting future emissions to meet climate goals, but is seldom considered. In Part 2, the paper explores the policy and management realm from international to national, subnational and local levels to identify strategies and policies reflecting an integrated understanding of both wetland and climate change science. Specific recommendations are made to capture synergies between wetlands and carbon cycle management, adaptation and resiliency to further enable researchers, policy makers and practitioners to protect wetland carbon and climate adaptation/resiliency ecosystem services.

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Section: Local and Project-level Strategies And Best Management Practmentioning

confidence: 99%

Wetlands In a Changing Climate: Science, Policy and Management

Moomaw

Chmura

Davies³

et al. 2018

Wetlands

299

142

View full text Add to dashboard Cite

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“…The Intermediate Site had average site integrated CH 4 and CO 2 emissions of 18.4–52.9 and 1.47–1.50 g C m −2 d −1 , respectively for the May‐August period. Studies report CH 4 emissions and understory and tree net ecosystem exchange from the adjacent natural site of 6.3–10 mg C m −2 d −1 (Bieniada & Strack, 2021; Murray et al., 2017) and 0.27 g C m −2 d −1 , respectively (Murray et al., 2017). While interannual variability could be driving some of the differences, our CO 2 and CH 4 values are two to five times higher than those of the nearby natural site.…”

Section: Discussionmentioning

confidence: 99%

Environmental and Management Drivers of Carbon Dioxide and Methane Emissions From Actively‐Extracted Peatlands in Alberta, Canada

Hunter,

Frei,

Strachan

et al. 2024

JGR Biogeosciences

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The installation of drainage ditches and removal of vegetation in preparation for vacuum harvesting alters the carbon dynamics of peatlands. However, we lack the measurements to understand the spatial distribution and environmental and substrate quality controls of carbon dioxide (CO2) and methane (CH4) emissions, as well as how these factors change over the 20–30 year extraction period. For three summers, we measured CO2 and CH4 emissions using the closed chamber method at three actively extracted peatlands near Drayton Valley, Alberta, ranging from 2 to 28 years since the start of extraction. Measurements were made in the ditches, and on segments of peat (fields) between adjacent ditches. Field emissions did not change with distance from ditches, likely due to the observed homogeneity of volumetric water content (VWC) and temperature across the fields. Understanding carbon dynamics in the ditches will be important, as they emitted on average two and 10 times, respectively, the amount of CO2 and CH4 per square meter of the fields. We found moderate to weak relationships between carbon emissions and soil temperature, VWC and ditch water level, though ditch emissions were significantly reduced when there was standing water present. Altering conventional site management, such as increasing ditch spacing, could substantially reduce CH4 emissions from the managed area. Emissions did not decrease with time since start of extraction. We suggest that Canadian emission factor calculations for land‐based emissions consider both peat quality variations among sites, and a site's extraction duration, which has been important in other studies.

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“…However, harvesting generates alterations in the donor peatland, either in site recovery or in CO 2 emissions due to decreased GPP and increased exposure of the readily oxidizable OM (McNeil & Waddington, 2003; Tuittila et al., 2004; Waddington et al., 2010). Despite a little documented history of these impacts (Murray et al., 2017; Oestmann et al., 2021), it has been suggested that disturbed sites recover relatively quickly, with moss covering ca. 70% after 11 and 30 years for peatlands located in Canada and Finland, respectively (Guêné‐Nanchen et al., 2019; Silvan et al., 2017), returning to its original C balance naturally.…”

Section: Direct Anthropogenic Disturbances Exerted On Sphagnum Mosses...mentioning

confidence: 99%

“…In general terms, the active reintroduction of Sphagnum , together with other rehabilitation activities, accelerates the reestablishment of the typical vegetation and restores the peatland to its CO 2 sequestration condition (Figure 6; Table 2; Table S4) (Brown et al., 2017; Huth et al., 2021; Murray et al., 2017; Tuittila et al., 2004). It has been shown that disturbed sites without a vegetative cover of mosses (bare peat), show seasonal CO 2 emissions 150% higher than sites restored with Sphagnum (McNeil & Waddington, 2003).…”

Section: The Impact Of Management Actions Favoring the Reestablishmen...mentioning

confidence: 99%

Sphagnum mosses, the impact of disturbances and anthropogenic management actions on their ecological role in CO₂ fluxes generated in peatland ecosystems

Pacheco‐Cancino,

Carrillo‐López,

Sepulveda‐Jauregui

et al. 2023

Global Change Biology

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Mosses of the genus Sphagnum are the dominant vegetation in most pristine peatlands in temperate and high‐latitude regions. They play a crucial role in carbon sequestration, being responsible for ca. 50% of carbon accumulation through their active participation in peat formation. They have a significant influence on the dynamics of CO2 emissions due to an efficient maximum potential photosynthetic rate, lower respiration rates, and the production of a recalcitrant litter whose decomposition is gradual. However, various anthropogenic disturbances and land use management actions that favor its reestablishment have the potential to modify the dynamics of these CO2 emissions. Therefore, the objective of this review is to discuss the role of Sphagnum in CO2 emissions generated in peatland ecosystems, and to understand the impacts of anthropogenic practices favorable and detrimental to Sphagnum on these emissions. Based on our review, increased Sphagnum cover reduces CO2 emissions and fosters C sequestration, but drainage transforms peatlands dominated by Sphagnum into a persistent source of CO2 due to lower gross primary productivity of the moss and increased respiration rates. Sites with moss removal used as donor material for peatland restoration emit twice as much CO2 as adjacent undisturbed natural sites, and those with commercial Sphagnum extraction generate almost neutral CO2 emissions, yet both can recover their sink status in the short term. The reintroduction of fragments and natural recolonization of Sphagnum in transitional peatlands, can reduce emissions, recover, or increase the CO2 sink function in the short and medium term. Furthermore, Sphagnum paludiculture is seen as a sustainable alternative for the use of transitional peatlands, allowing moss production strips to become CO2 sink, however, it is necessary to quantify the emissions of all the components of the field of production (ditches, causeway), and the biomass harvested from the moss to establish a final closing balance of C.

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Growing season carbon gas exchange from peatlands used as a source of vegetation donor material for restoration

Cited by 13 publications

References 39 publications

Wetlands In a Changing Climate: Science, Policy and Management

Wetlands In a Changing Climate: Science, Policy and Management

Environmental and Management Drivers of Carbon Dioxide and Methane Emissions From Actively‐Extracted Peatlands in Alberta, Canada

Sphagnum mosses, the impact of disturbances and anthropogenic management actions on their ecological role in CO₂ fluxes generated in peatland ecosystems

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Growing season carbon gas exchange from peatlands used as a source of vegetation donor material for restoration

Cited by 13 publications

References 39 publications

Wetlands In a Changing Climate: Science, Policy and Management

Wetlands In a Changing Climate: Science, Policy and Management

Environmental and Management Drivers of Carbon Dioxide and Methane Emissions From Actively‐Extracted Peatlands in Alberta, Canada

Sphagnum mosses, the impact of disturbances and anthropogenic management actions on their ecological role in CO2 fluxes generated in peatland ecosystems

Contact Info

Product

Resources

About

Sphagnum mosses, the impact of disturbances and anthropogenic management actions on their ecological role in CO₂ fluxes generated in peatland ecosystems