The unrecognized importance of carbon stocks and fluxes from swamps in Canada and the USA

Davidson, Scott J.; Dazé, Emily; Byun, Eunji; Hiler, Dean; Kangur, Markus; Talbot, Julie; Finkelstein, Sarah A.; Strack, Maria

doi:10.1088/1748-9326/ac63d5

Cited by 19 publications

(36 citation statements)

References 96 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The values of methane fluxes in similar ecosystems under similar climatic conditions (Finland, Canada, and Northeast China) also generally do not differ from those obtained by us in European Russia [45,68]. However, some works [18,23,69] reported methane assimilation at a rate of up to −0.1 mgC m −2 h −1 , which was not observed at all in the black alder swamp we studied.…”

Section: Ch 4 Fluxessupporting

confidence: 80%

“…The range of the total variability of methane fluxes was 2 orders of magnitude in several cases [23,68,73], while the same indicator in the "Petushikha" swamp hardly reached 1 order of magnitude. Both greater methane uptake and greater dispersion of flux values can be achieved by including the sites characterized by boundary conditions into consideration: it is very likely that the more drained forests surrounding the "Petushikha" black alder swamp may differ in methane uptake, while the more moistened sites located closer to the edge of the adjacent wetland may have higher CH 4 emissions.…”

Section: Ch 4 Fluxesmentioning

confidence: 91%

“…The obtained values of methane fluxes are very typical for the swamps of the panarctic region (the flux median is 0.14 mgC m −2 h −1 - [74]), slightly exceeding the latter, likely due to more favorable climatic conditions of the boreo-nemoral zone (some swamps used to calculate the methane flux typical for the Arctic in the [74] are located close to or beyond the Arctic Circle). At the same time, the southern swamps of USA Great Dismal Swamp, Virginia- [68,70,72], Malaysia [71], and other tropical regions that are not considered here, are characterized by significantly higher methane emissions than their counterparts in the boreo-nemoral and boreal zones. This is very likely a natural consequence of an increase in the favorability of climatic conditions, the abundance of mineral nutrition elements, the moistening conditions of tropical forests, etc.…”

Section: Ch 4 Fluxesmentioning

confidence: 92%

See 2 more Smart Citations

Spatio-Temporal Variability of Methane Fluxes in Boreo-Nemoral Alder Swamp (European Russia)

Glukhova

Il’yasov

Vompersky

et al. 2022

Forests

View full text Add to dashboard Cite

In 1995–1998 and 2013–2016, we measured methane fluxes (1Q-median-3Q, mgC m−2 h−1) in the Petushikha black alder swamp of the boreo-nemoral zone of European Russia. At microelevations (EL sites), flat surfaces (FL), microdepressions (DEP), and water surfaces of streams and channels (STR) sites, the fluxes comprised 0.01–0.03–0.09, 0.02–0.06–0.19, 0.04–0.14–0.43, and 0.10–0.21–0.44, respectively. The biggest uncertainty of methane fluxes was caused by seasonal variability (the level of relative variability of fluxes is a nonparametric analogue of the coefficient of variation) which comprised 144%, then by spatial variability—105%, and the smallest by interannual variability—75%. Both spatial and temporal variability of methane fluxes at different elements of the microrelief is heterogeneous: the most variable are communities that are “unstable” in terms of hydrological conditions, such as FL and DEP, and the least variable are the most drained EL and the most moistened STR (“stable” in terms of hydrological conditions). The obtained data on the fluxes and their spatial and temporal variability are consistent with the literature data and can be used to optimize the process of planning studies of the methane budget of “sporadic methane sources”, such as waterlogged forests. This is especially relevant for an adequate assessment of the role of methane fluxes in the formation of the waterlogged forests carbon budget and a changing climate.

show abstract

Section: Ch 4 Fluxessupporting

confidence: 80%

Section: Ch 4 Fluxesmentioning

confidence: 91%

Section: Ch 4 Fluxesmentioning

confidence: 92%

See 1 more Smart Citation

Spatio-Temporal Variability of Methane Fluxes in Boreo-Nemoral Alder Swamp (European Russia)

Glukhova

Il’yasov

Vompersky

et al. 2022

Forests

View full text Add to dashboard Cite

show abstract

“…Compared to GSOC and our results, SoilGrids 2.0 potentially overestimates SOC stocks in the HRW but is also within the range of other studies using data from the National Forest Inventory 47 30 show our approach could apply towards landscape areas with containing peatlands but additional classi cation may be needed since peatlands store signi cantly more SOC than mineral soil wetlands per unit area 50 . The forested wetlands in our study can be compared to ndings from Davidson et al, 14 Implication for scaling up cryptic carbon to forested wetlands in CONUS…”

Section: Comparisons To Other Soc Mapping Studiesmentioning

confidence: 86%

“…Within the inland wetland population, forested wetlands cover the largest extent, but, represent the most di cult wetland mapping category due to the canopy coverage, frequently small extent, and isolation from surface waters 13 . Despite the limited appearance, forested wetlands have interconnective roles within terrestrial carbon cycle in addition to SOC storage, including but not limited to: accumulating carbon in aboveground biomass 14 ; transporting of labile dissolved organic matter to streams 15 ; supplying dissolved CO 2 to surface waters leading to signi cant outgassing 16 ; and potentially acting as the highest non-ebullative CH 4 ux from groundwater through tree stems 17 . This diverse array of carbon functions highlights forested wetlands role as a hotspot or ecosystem control point within a landscape 18 .…”

Section: Introductionmentioning

confidence: 99%

Cryptic carbon: The hidden carbon in forested wetland soils

Stewart

Halabisky

Babcock

et al. 2023

Preprint

View full text Add to dashboard Cite

Inland wetlands are critical carbon reservoirs storing 30% of global soil organic carbon (SOC) within 6% of the land surface. However, forested regions contain SOC-rich wetlands that are not included in SOC maps, which we refer to as ‘cryptic carbon’. To demonstrate the magnitude of cryptic carbon, we map SOC as a function of a continuous, upland-to-wetland gradient across a large catchment. Total catchment SOC was comparable to global SOC maps but wetlands delineated by our approach contained 1.7 ± 0.3 TgC compared to 0.3 ± 0.2 TgC in currently mapped wetland SOC. Cryptic carbon, the wetland SOC outside of currently available maps, was 1.5 ± 0.3 TgC or 383% higher than the current estimates. When combined, the new total wetland SOC including cryptic carbon increased to 1.8 TgC ± 0.5 or by 483%, highlighting vast stores of SOC are not mapped and contained in unprotected and vulnerable wetlands.

show abstract

The forgotten forests: Incorporating temperate peat‐forming wet woodlands as nature‐based solutions into policy and practice

Milner,

Baird,

Davidson

et al. 2024

Ecol Sol and Evidence

Self Cite

View full text Add to dashboard Cite

Peat‐forming wet woodlands (forested wetlands) are naturally occurring carbon‐dense ecosystems that have considerable potential to form an important part of net zero woodland establishment and peatland strategies, as well as provide crucial co‐benefits to restore biodiversity and regulate hydrological systems. Despite their potential, temperate peat‐forming wet woodlands have been widely lost, are critically understudied and are being overlooked in land‐use strategies. Unlike temperate ‘dry’ woodlands, some wet woodlands are peat forming and can store large amounts of carbon below‐ground in peat in addition to the carbon in the tree biomass. The complex structure of these peat‐forming wet woodlands creates high abiotic heterogeneity, resulting in a wide variety of microhabitats to support high levels of biodiversity, and this structural complexity can also increase water storage in the landscape and slow flood flows, providing natural flood protection. Co‐written by experts in academia and UK Government, we highlight critical knowledge gaps in our understanding of peat‐forming wet woodlands that, once addressed, could form the basis for radical changes to their inclusion in net zero and land‐use policies. Policy and practice implications: The significant role that peatland restoration has to play in reaching net zero presents an immediate policy opportunity to consider the full range of ecosystems to achieve net zero targets, while protecting and enhancing socio‐ecological sustainability. In co‐writing this paper, our aim is to stimulate discussion and sharing of knowledge between those involved in research, policy and practice in order to strengthen the evidence base for peat‐forming wet woodland re‐establishment and future management. We call on researchers, policymakers and land managers to take temperate wet woodlands from understudied and overlooked, to integrated ecosystems that hold great promise in the contributions they can make as nature‐based solutions.

show abstract

The unrecognized importance of carbon stocks and fluxes from swamps in Canada and the USA

Cited by 19 publications

References 96 publications

Spatio-Temporal Variability of Methane Fluxes in Boreo-Nemoral Alder Swamp (European Russia)

Spatio-Temporal Variability of Methane Fluxes in Boreo-Nemoral Alder Swamp (European Russia)

Cryptic carbon: The hidden carbon in forested wetland soils

The forgotten forests: Incorporating temperate peat‐forming wet woodlands as nature‐based solutions into policy and practice

Contact Info

Product

Resources

About