Climate warming accelerates carbon release from foliar litter—A global synthesis DOI
Zihao Chen, Xiangyin Ni, Guillaume Patoine

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(5)

Published: May 1, 2024

Abstract With over one‐third of terrestrial net primary productivity transferring to the litter layer annually, carbon release from serves as a crucial valve in atmospheric dioxide concentrations. However, few quantitative global projections rate response climate change exist. Here, we combined foliar dataset (8973 samples) generate spatially explicitly estimates their residence time ( τ ) change. Results show mean () 0.69 year −1 (ranging 0.09–5.6 ). Under future scenarios, is projected decrease by 2.7% (SSP 1–2.6) and 5.9% 5–8.5) during 2071–2100 period. Locally, alleviation temperature moisture restrictions corresponded obvious decreases cold arid regions, respectively. In contract, tropical humid broadleaf forests increased 4.6% under SSP 5–8.5. Our findings highlight vegetation type powerful proxy for explaining patterns rates role conditions predicting responses observation‐based could refine cycle parameterization, improving cycle–climate feedbacks.

Language: Английский

Water table depth, experimental warming, and reduced precipitation impact on litter decomposition in a temperate Sphagnum-peatland DOI Creative Commons
Krzysztof Górecki, Anshu Rastogi, Marcin Stróżecki

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 771, P. 145452 - 145452

Published: Jan. 28, 2021

The Tea Bag Index (TBI) method was used to estimate the litter decomposition rate in peatland exposed for climate manipulation (increased temperature and reduced precipitation) at two contrasting sites differing water table depth (WTD) dynamics. To manipulate on peatland, prototyped Open Top Chambers (OTC) automated rain-out shelters were used. OTCs increased daytime air temperatures by ~1.7 °C driest plots an increase of precipitation, while average daily lower than 0.9 °C. However, cooled down peat even 0.8 this effect most pronounced rather night-time conditions. precipitation amount 26%. tea bags buried 8 cm 83 172 days starting from 19th April 2019. Our observation proved that although rates dependent temperature, WTD its fluctuations are main factors controlling waterlogged ecosystems like ours. At Sphagnum-dominated peatlands, interrelation between different environmental may mitigate impact warming decomposition.

Language: Английский

Citations

47
Risk of misinterpreting the Tea Bag Index: Field observations and a random simulation DOI
Taiki Mori, Ryosuke Nakamura, Ryota Aoyagi

et al.

Ecological Research, Journal Year: 2022, Volume and Issue: 37(3), P. 381 - 389

Published: March 10, 2022

Language: Английский

Citations

31
Microbial community functioning during plant litter decomposition DOI Creative Commons
Simon Andreas Schroeter, Damien Eveillard, Samuel Chaffron

et al.

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: May 6, 2022

Microbial life in soil is fueled by dissolved organic matter (DOM) that leaches from the litter layer. It well known decomposer communities adapt to available source, but it remains unclear if they functionally compete or synergistically address different types. Therefore, we decomposed beech, oak, pine and grass two geologically distinct sites a lab-scale decomposition experiment. We performed correlative network analysis on results of direct infusion HR-MS DOM cross-validated functional predictions 16S rRNA gene amplicon sequencing with metaproteomic analyses. Here show many functions are redundantly distributed within their relative expression rapidly optimized litter-specific properties. However, community changes likely forced antagonistic mechanisms as identified several natural antibiotics DOM. As consequence, specializing towards source state (community divergence) showing similar metabolomes (metabolome convergence). Our multi-omics-based highlight not only fuels microbial life, additionally holds meta-metabolomic information functioning ecosystems.

Language: Английский

Citations

31
Enhanced loss but limited mobility of pyrogenic and organic matter in continuous permafrost-affected forest soils DOI Creative Commons
Marcus Schiedung, Severin-Luca Bellè,

Carmen Hoeschen

et al.

Soil Biology and Biochemistry, Journal Year: 2023, Volume and Issue: 178, P. 108959 - 108959

Published: Jan. 17, 2023

Pyrogenic organic matter (PyOM) is a product of incomplete combustion during wildfires and an important pool soil carbon (SOC). The dynamics PyOM SOC in boreal permafrost-affected soils are largely unknown, while storing large amounts global being vulnerable to climate change. Here, we traced the vertical mobility, allocation fractions decomposition losses highly 13C-labeled its precursor ryegrass (grass OM) after two years in-situ incubation cores installed upper 10 cm continuous (northern sites) discontinuous sporadic (southern forest Northern Canada. At northern sites, up three times more was lost by (39% initial) compared southern sites (11% initial). Losses grass OM were substantial (69–84% larger soils. incorporation limited >90% recovered found at applied depth (0–3 cm). strongly interacted with mineral surfaces, as indicated around 40% mineral-associated heavy density (<63 μm). Microscale analyses SEM NanoSIMS showed that mainly allocated towards fine fraction particulate aggregated form, highlighting importance abiotic processes for enhanced surfaces well increased distribution microscale initial decomposition, it remained Our results highlight sensitive fresh inputs losses. Especially persistence depended on site specific properties not solely physico-chemical persistence. responses decoupled non-pyrolyzed require better understanding evaluate feedbacks high-latitude warming associated shifts vegetation wildfire regimes.

Language: Английский

Citations

20
Climate warming accelerates carbon release from foliar litter—A global synthesis DOI
Zihao Chen, Xiangyin Ni, Guillaume Patoine

et al.

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(5)

Published: May 1, 2024

Abstract With over one‐third of terrestrial net primary productivity transferring to the litter layer annually, carbon release from serves as a crucial valve in atmospheric dioxide concentrations. However, few quantitative global projections rate response climate change exist. Here, we combined foliar dataset (8973 samples) generate spatially explicitly estimates their residence time ( τ ) change. Results show mean () 0.69 year −1 (ranging 0.09–5.6 ). Under future scenarios, is projected decrease by 2.7% (SSP 1–2.6) and 5.9% 5–8.5) during 2071–2100 period. Locally, alleviation temperature moisture restrictions corresponded obvious decreases cold arid regions, respectively. In contract, tropical humid broadleaf forests increased 4.6% under SSP 5–8.5. Our findings highlight vegetation type powerful proxy for explaining patterns rates role conditions predicting responses observation‐based could refine cycle parameterization, improving cycle–climate feedbacks.

Language: Английский

Citations

8