Land Management Strategies Influence Soil Organic Carbon Stocks of Prairie Potholes of North America

Bansal, Sheel; Tangen, Brian A.; Gleason, Robert A.; Badiou, Pascal; Creed, Irena F.

doi:10.1002/9781119639305.ch14

Cited by 5 publications

(6 citation statements)

References 92 publications

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“…In contrast, ephemeral wetlands with shorter hydroperiods were more sensitive to drainage and showed losses of soil carbon over the 2 years since drainage. This finding is consistent with research by Bansal et al (2021) that found wetland class was key for explaining variability in wetland soil carbon storage. The gradient of wetland hydroperiod from ephemeral to seasonal classes is also related to plant productivity and organic matter inputs to soils, as the type of vegetation in the wetland (such as annual crops, grassland, or natural wetland vegetation) can further contribute to variability in carbon storage (Gleason et al, 2008;Badiou et al, 2011;Bansal et al, 2021).…”

Section: Climate and Wetland Characteristics Control Soil Carbon Stor...supporting

confidence: 93%

“…The wetlands that have been drained for the longest period of time (36-50 years) had similar soil organic carbon concentrations to the mid-slope landscape position which is likely attributed to the effect of soil redistribution (Brown et al, 2017). Other studies found similar results with drained, cultivated, and restored wetlands having similar soil carbon storage (Bansal et al, 2021). An explanation for some of the similarity between these managed wetlands, could be related to the effectiveness of wetland drainage The relative intensity of attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectral bands associated with organic matter functional group characterizations in the consolidation and drained wetlands at Discovery Farm.…”

Section: Short-term Temporal Changes Soil Carbon Storage Following Dr...mentioning

confidence: 63%

“…Specific to the Prairie Pothole Region, Euliss et al (2006) estimated that wetland drainage and subsequent cultivation results in an average loss of 10.1 Mg C ha −1 . Other studies have investigated the effect of time since drainage on carbon storage as well as subsequent land management effects on soil carbon in drained wetlands (Brown et al, 2017;Bansal et al, 2021;Huang et al, 2023). This research has provided a foundational understanding of the potential influence drainage has on organic carbon storage for the Prairie Pothole Region.…”

Section: Introductionmentioning

confidence: 99%

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Soil carbon dynamics in drained prairie pothole wetlands

Chizen,

Helgason,

Weiseth

et al. 2024

Front. Environ. Sci.

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Drainage leads to trade-offs between crop production efficiency and wetland conservation, with complex impacts on ecosystem services. In North America’s Prairie Pothole Region, wetland drainage is widespread, often to increase the available land for cultivation, prevent crop loss due to flooding, and manage soil salinity. Wetlands are known for providing key ecosystem services such as improved water quality, flood mitigation, and carbon storage. There is limited research on how changes to soil hydrology and soil redistribution through wetland drainage can impact soil carbon storage and persistence in this region. This research evaluates factors that contribute to soil carbon storage in drained prairie pothole wetland based on 33 drained wetlands in Saskatchewan, Canada. These analyses showed regional differences in the response of soil carbon storage to drainage that are driven by environmental factors such as annual precipitation, temperature, and wetland permanence. We observed increasing soil carbon storage from the Dark Brown to Black soil zones, as well as with longer wetland pond permanence. The sampling depth used for calculating soil carbon storage was especially important when comparing geographically across the soil zones as the Black soil zone had greater soil carbon stored at depth. Soil carbon was also intensively monitored over 2 years following installation of surface drainage across a wetland complex (8 drained wetlands) where water was partially directed to a consolidation wetland. We further assessed changes in soil carbon dynamics and protection from microbial decomposition based on three soil organic matter fractions, ATR-FTIR for organic matter functional groups, and phospholipid fatty acid analysis to understand the microbial community abundance and structure. After 2 years following drainage, ephemeral wetlands with short pond permanence were found to be most sensitive to drainage and the only wetland class with decreases in soil carbon. The temporary and seasonal wetland classes showed no significant differences in soil carbon content but there were changes in the organic matter with depth due to soil redistribution during drainage implementation. Jointly, this research provides region-specific estimates of soil carbon storage in drained prairie pothole wetlands that can be used to inform wetland soil carbon management in cultivated fields.

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Section: Climate and Wetland Characteristics Control Soil Carbon Stor...supporting

confidence: 93%

Section: Short-term Temporal Changes Soil Carbon Storage Following Dr...mentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil carbon dynamics in drained prairie pothole wetlands

Chizen,

Helgason,

Weiseth

et al. 2024

Front. Environ. Sci.

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“…This result was contradictory to the assumption that fertilizer inputs from agricultural runoff increase aquatic CH 4 emissions (38). In the PPR, wetlands that are nested within croplands not only may experience nutrient enrichment (18) but also have less soil organic carbon substrates to fuel methanogenesis (25,38,39) and more aerated soils to sustain CH 4 oxidation. These factors may explain why we found lower CH 4 emissions from wetlands nested in croplands compared to grasslands.…”

Section: Resultsmentioning

confidence: 91%

“…This dataset of nearly 19,000 flux measurements was collected from 143 wetlands over 13 years of sampling, across an area of 200,000 km 2 . The expansive nature of our data covers a wide range of abiotic, biotic, and land-cover conditions that are representative of the PPR (21,22,39,62,68).…”

Section: Chamber (Plot-scale) Model: Data Sampling Protocol and Flux ...mentioning

confidence: 99%

Large increases in methane emissions expected from North America’s largest wetland complex

et al. 2023

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Natural methane (CH 4 ) emissions from aquatic ecosystems may rise because of human-induced climate warming, although the magnitude of increase is highly uncertain. Using an exceptionally large CH 4 flux dataset (~19,000 chamber measurements) and remotely sensed information, we modeled plot- and landscape-scale wetland CH 4 emissions from the Prairie Pothole Region (PPR), North America’s largest wetland complex. Plot-scale CH 4 emissions were driven by hydrology, temperature, vegetation, and wetland size. Historically, landscape-scale PPR wetland CH 4 emissions were largely dependent on total wetland extent. However, regardless of future wetland extent, PPR CH 4 emissions are predicted to increase by two- or threefold by 2100 under moderate or severe warming scenarios, respectively. Our findings suggest that international efforts to decrease atmospheric CH 4 concentrations should jointly account for anthropogenic and natural emissions to maintain climate mitigation targets to the end of the century.

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