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Mod-Ex Question 2

Vegetation - Biogeochemistry

How do patterns of hydrology, disturbance history, and edaphic properties drive vegetation and biogeochemistry to affect land-atmosphere fluxes?

In Phase 4, we are testing the hypothesis that vegetation distribution and function are tightly coupled with edaphic properties, and that changes in tundra carbon cycling under a warming climate will be driven by a combination of direct impacts of warming on biogeochemistry and indirect impacts of warming mediated by changes in vegetation distributions. 

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2025

  • Berns-Herrboldt, Erin C., et al. “Dynamic Soil Columns Simulate Arctic Redox Biogeochemistry and Carbon Release During Changes in Water Saturation”. Scientific Reports, vol. 15, 2025, https://doi.org/10.1038/s41598-024-83556-4.
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  • Torn, Margaret S., et al. “Large Emissions of CO2 and CH4 Due to Active-Layer Warming in Arctic Tundra”. Nature Communications, vol. 16, 2025, https://doi.org/10.1038/s41467-024-54990-9.
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  • Freitas, Nancy L., et al. “Substantial and Overlooked Greenhouse Gas Emissions from Deep Arctic Lake Sediment”. Nature Geoscience, vol. 18, 2025, https://doi.org/10.1038/s41561-024-01614-y.
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2024

  • Li, Y, et al. “Genomic Insights into Redox-Driven Microbial Processes for Carbon Decomposition in Thawing Arctic Soils and Permafrost”. MSphere, vol. 9, 2024, https://doi.org/10.1128/msphere.00259-24.
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2023

  • Zhang, Lijie, et al. “Inhibition of Methylmercury and Methane Formation by Nitrous Oxide in Arctic Tundra Soil Microcosms”. Environmental Science and Technology, vol. 57, no. 14, 2023, pp. 5655-6, https://doi.org/10.1021/acs.est.2c09457.
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2022

  • Taş, Neslihan. “Metagenomes from Arctic Soil Microbial Communities from the Barrow Environmental Observatory, Utqiaġvik, AK, USA”. Microbiology Resource Announcements, vol. 11, no. 8, 2022, https://doi.org/10.1128/mra.00528-22.
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  • Sulman, Benjamin N., et al. “Simulated Hydrological Dynamics and Coupled Iron Redox Cycling Impact Methane Production in an Arctic Soil”. Journal of Geophysical Research: Biogeosciences, vol. 127, no. 10, 2022, https://doi.org/10.1029/2021jg006662.
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