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- W4221108287 abstract "<div> <p>Peatland restoration efforts are accelerating globally with a primary aim of restoring the carbon balance of these ecosystems. Degraded peatlands export carbon to the atmosphere&#160;but also&#160;to freshwater environments as dissolved organic compounds. Whilst hydrological restoration measures can effectively reduce&#160;emissions&#160;of CO2&#160;from upland&#160;peatlands, the impact on carbon export to the aquatic environment is less apparent. In some&#160;cases,&#160;dissolved organic concentrations can even increase after restoration, without clear mechanisms that could drive such a response. We aim to determine whether the response of the peat microbial community&#160;to restoration measures can explain poorly understood trends in dissolved organics.&#160;</p> </div><div> <p>We investigated a severely degraded peatland in&#160;South Wales that has experienced historic drying to considerable depth, almost complete loss of surface vegetation, and a lowering of the peat surface. Restoration measures implemented over the past 16 years have involved hydrological intervention through gulley-blocking as well as efforts to stabilize the peat surface and re-establish plant communities.&#160; Porewater&#160;collected over the first 6 months of our investigation indicates, contrary to expectation, that DOC concentrations were lowest in the most severely degraded region of the&#160;bog&#160;and highest in&#160;the&#160;least&#160;disturbed&#160;regions. We will discuss the potential drivers behind this observed trend,&#160;focusing&#160;on&#160;the role played by the peatland microbiome in the processing of dissolved organics in the&#160;peatland.&#160;In&#160;addition,&#160;we draw on&#160;water-table&#160;monitoring&#160;and sampling results to consider how environmental and geochemical conditions&#160;moderate&#160;biotic processing of dissolved organics.&#160;Improvement&#160;of&#160;our&#160;understanding of the microbial community&#160;response&#160;to rewetting measures is required&#160;as this underpins the function and carbon balance of these systems and will&#160;ultimately&#160;inform management approaches.&#160;</p> </div>" @default.
- W4221108287 created "2022-04-03" @default.
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- W4221108287 date "2022-03-28" @default.
- W4221108287 modified "2023-09-28" @default.
- W4221108287 title "Hydrological restoration of an upland peatland and its consequences for the microbial processing of dissolved organics" @default.
- W4221108287 doi "https://doi.org/10.5194/egusphere-egu22-7537" @default.
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