Measuring and Interpreting the Surface and Shallow Subsurface Process Influences on Coastal Wetland Elevation: A Review

Estuaries and Coasts, Journal Year: 2024, Volume and Issue: 47(7), P. 1708 - 1734

Published: April 2, 2024

Language: Английский

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Factors Regulating the Potential for Freshwater Mineral Soil Wetlands to Function as Natural Climate Solutions

Wetlands, Journal Year: 2025, Volume and Issue: 45(1)

Published: Jan. 1, 2025

There are increasing global efforts and initiatives aiming to tackle climate change mitigate its impacts via natural solutions (NCS). Wetlands have been considered effective NCS given their capacity sequester retain atmospheric carbon dioxide (CO

Language: Английский

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Data and knowledge needs for improving science and policy for peatlands in Canada in a changing world: insights from Global Peatlands Initiative Workshop, June 2023

FACETS, Journal Year: 2025, Volume and Issue: 10, P. 1 - 19

Published: Jan. 1, 2025

Knowledge and data on the current function, future threats, benefits of peatlands in Canada are required to support evidence-based decision-making ensure they continue provide critical ecosystem services. This is particularly relevant for Canada, given large expanse relatively intact peatland area. There a need, not only standardize protocols, but also prioritize types information knowledge that can best meet conservation management goals. was challenge posed participants Global Peatlands Initiative workshop June 2023 Quebec City, Quebec, Canada. Participants were composed researchers using primarily Western science approaches use carbon accounting, policy or sustainable land use, reclamation/restoration, conservation, wildlife, water resources applications. For seven categories (hydrometeorological environmental sensing; peat coring depth; greenhouse gas monitoring; biodiversity; vegetation, woody debris, litter; Traditional Knowledge; quality), three priority measurements identified recommendations their collection discussed. The key from (1) create standardized, yet flexible protocols; (2) coordinate field where possible; (3) weave more into understanding peatlands; (4) an atlas existing information; (5) scope opportunities network “super sites”.

Language: Английский

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Non‐Floodplain Wetlands Are Carbon‐Storage Powerhouses Across the United States

Earth s Future, Journal Year: 2025, Volume and Issue: 13(4)

Published: April 1, 2025

Abstract Understanding wetland carbon stores and dynamics are critical to managing global flux. Non‐floodplain wetlands (NFWs) hydrologically dynamic globally prevalent inland distal fluvial flowpaths, lacustrine‐fringing areas, geomorphic floodplains; >50% the world's remaining have been reported as NFWs. Quantifying NFW represents a substantive carbon‐budget gap. We analyze conterminous‐US (CONUS) field‐based data collected from nearly 2000 sites sampled by National Wetlands Condition Assessment (NWCA) representing ∼38 Mha CONUS wetlands, asking: What is mean soil organic density total storage in different hydrogeomorphically classified types? To what extent does NFWs differ other How vary between altered intact NFWs? find that relative types, carbon‐storing powerhouses, containing approximately 1.5x per ha than types sampled. CONUS‐wide, store more across every depth increment: ∼2.0x types. Further, condition affects dynamics: least impaired had 1.6x found intermediately disturbed 1.8x of most‐disturbed These NWCA data, plus waning societal protections, suggests releases destruction landscapes likely increase—perhaps markedly—in coming years (e.g., through hydrology affecting atmospheric release NFW‐stored well dissolved export).

Language: Английский

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Root-Driven Soil Reduction in Wadden Sea Salt Marshes

Wetlands, Journal Year: 2024, Volume and Issue: 44(8)

Published: Oct. 21, 2024

Abstract The soil redox potential in wetlands such as peatlands or salt marshes exerts a strong control over microbial decomposition processes and consequently carbon cycling. Wetland plants can influence by supplying both terminal electron acceptors (i.e. oxygen) donors organic matter) to the system. However, quantitative insight into importance of plant effects on wetland associated traits are scarce. In combined mesocosm field study we investigated impact reduction using IRIS (Indicator Reduction Soils) sticks. Vegetated plots were compared non-vegetated along an elevational gradient marsh Wadden Sea artificially created tidal tank experiment. Our findings from experiment demonstrated that vegetation enhanced suppressed relative pots. direction effect (i.e., net oxidizing reducing) was inversely correlated with background conditions. Insights high-resolution oxygen profiling via planar optode imaging corroborated these findings. study, consistently reduced comparatively well-aerated soil. positively matter content belowground biomass, indicating greater availability plant-derived donors, form matter, increased reduction. Challenging dominant paradigm primarily act oxidizers, our reveals their exert reducing effect. documented plant-induced changes conditions suggests previously overlooked role shaping stability stocks ecosystems variable water tables.

Language: Английский

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Metabolic interactions underpinning high methane fluxes across terrestrial freshwater wetlands

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 22, 2025

Current estimates of wetland contributions to the global methane budget carry high uncertainty, particularly in accurately predicting emissions from methane-emitting wetlands. Microorganisms drive cycling, but little is known about their conservation across To address this, we integrate 16S rRNA amplicon datasets, metagenomes, metatranscriptomes, and annual flux data 9 wetlands, creating Multi-Omics for Understanding Climate Change (MUCC) v2.0.0 database. This resource used link microbiome composition function emissions, focusing on methane-cycling microbes networks driving carbon decomposition. We identify eight genera shared wetlands show wetland-specific metabolic interactions marshes, revealing low connections between methanogens methanotrophs high-emitting Methanoregula emerged as a hub methanogen strong predictor flux. In these it also displays functional potential methylotrophic methanogenesis, highlighting importance this pathway ecosystems. Collectively, our findings illuminate trends microbial decomposition while providing an extensive publicly available database advance future research. The authors created multisite CH4 fluxes diverse differences cross-feeding dynamics that improve predictions

Language: Английский

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Sulfate and Dissolved Organic Carbon Concentrations Drive Distinct Microbial Community Patterns in Prairie Wetland Ponds

Environmental Microbiology Reports, Journal Year: 2025, Volume and Issue: 17(1)

Published: Jan. 27, 2025

ABSTRACT Prairie wetland ponds on the Great Plains of North America offer a diverse array geochemical scenarios that can be informative about their impact microbial communities. These ecosystems invaluable ecological services while experiencing significant stressors, primarily through drainage and climate change. In this first study systematically combining environmental conditions with community composition to identify various niches in prairie ponds, sediments had higher abundance but lower phylogenetic diversity concentrations dissolved organic carbon ([DOC]; 10–18 mg/L) sulfate ([SO 4 2− ]; 37–58 water. As [DOC] [SO ] increased, there was an initial decline not diversity. Maximum values both occurred between 56 115 mg/L 5,000–6,000 decreased thereafter 150–180 8,000–14,000 ], respectively. findings confirm variables shape communities key taxa involved sulfur cycling dominated these potentially impacting vital biogeochemical processes such as bioavailability heavy metals, sequestration, methane emissions.

Language: Английский

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Drivers of Soil Carbon Variability in North America’s Prairie Pothole Wetlands: A Review

Wetlands, Journal Year: 2025, Volume and Issue: 45(1)

Published: Jan. 1, 2025

Language: Английский

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Changes in Aquatic Carbon Following Rewetting of a Nutrient‐Poor Northern Peatland

Journal of Geophysical Research Biogeosciences, Journal Year: 2025, Volume and Issue: 130(4)

Published: March 27, 2025

Abstract Rewetting drained peatlands by raising the groundwater table is currently suggested, and widely implemented, as an efficient measure to reduce peat soil degradation decrease CO 2 emissions. However, limited information exists regarding effects of peatland rewetting on lateral carbon export (LCE) via aquatic pathway. Any changes in LCE are critical consider, they affect overall C balance, may offset any climatic benefits from rewetting. Additionally, altered could have consequences for downstream water quality biota. Here, we monitored content (DOC, DIC CH 4 ) runoff pore water, well radiocarbon DOC a drained, nutrient‐poor boreal that was rewetted during autumn 2020. By comparing pre‐ (2019–2020) post‐ (2021–2022) periods, detected export. The results showed effect site‐, season‐ form‐specific. Overall, one catchment elevated DIC) or highly (CH concentrations exports post‐rewetting, whereas other site only DOC. Changes after were likely driven site‐specific factors such expansion open‐water areas, hydrological flow paths proportion filled ditches total ditch length. Finally, measurements indicated enhanced contemporary following These initial (short‐term) findings highlight need before‐after assessments better evaluate sequestration capacity while undergoing operations.

Language: Английский

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New perspectives on temperate inland wetlands as natural climate solutions under different CO2-equivalent metrics

npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)

Published: Sept. 28, 2024

Language: Английский

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