Arctic rooting depth distribution influences modelled carbon emissions but cannot be inferred from aboveground vegetation type. Blume-Werry, G., Dorrepaal, E., Keuper, F., Kummu, M., Wild, B., & Weedon, J. T. New Phytologist, 240(2):502–514, 2023. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18998![Arctic rooting depth distribution influences modelled carbon emissions but cannot be inferred from aboveground vegetation type [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The distribution of roots throughout the soil drives depth-dependent plant–soil interactions and ecosystem processes, particularly in arctic tundra where plant biomass, is predominantly belowground. Vegetation is usually classified from aboveground, but it is unclear whether such classifications are suitable to estimate belowground attributes and their consequences, such as rooting depth distribution and its influence on carbon cycling. We performed a meta-analysis of 55 published arctic rooting depth profiles, testing for differences both between distributions based on aboveground vegetation types (Graminoid, Wetland, Erect-shrub, and Prostrate-shrub tundra) and between ‘Root Profile Types’ for which we defined three representative and contrasting clusters. We further analyzed potential impacts of these different rooting depth distributions on rhizosphere priming-induced carbon losses from tundra soils. Rooting depth distribution hardly differed between aboveground vegetation types but varied between Root Profile Types. Accordingly, modelled priming-induced carbon emissions were similar between aboveground vegetation types when they were applied to the entire tundra, but ranged from 7.2 to 17.6 Pg C cumulative emissions until 2100 between individual Root Profile Types. Variations in rooting depth distribution are important for the circumpolar tundra carbon-climate feedback but can currently not be inferred adequately from aboveground vegetation type classifications.
@article{blume-werry_arctic_2023,
title = {Arctic rooting depth distribution influences modelled carbon emissions but cannot be inferred from aboveground vegetation type},
volume = {240},
copyright = {© 2023 The Authors New Phytologist © 2023 New Phytologist Foundation},
issn = {1469-8137},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/nph.18998},
doi = {10.1111/nph.18998},
abstract = {The distribution of roots throughout the soil drives depth-dependent plant–soil interactions and ecosystem processes, particularly in arctic tundra where plant biomass, is predominantly belowground. Vegetation is usually classified from aboveground, but it is unclear whether such classifications are suitable to estimate belowground attributes and their consequences, such as rooting depth distribution and its influence on carbon cycling. We performed a meta-analysis of 55 published arctic rooting depth profiles, testing for differences both between distributions based on aboveground vegetation types (Graminoid, Wetland, Erect-shrub, and Prostrate-shrub tundra) and between ‘Root Profile Types’ for which we defined three representative and contrasting clusters. We further analyzed potential impacts of these different rooting depth distributions on rhizosphere priming-induced carbon losses from tundra soils. Rooting depth distribution hardly differed between aboveground vegetation types but varied between Root Profile Types. Accordingly, modelled priming-induced carbon emissions were similar between aboveground vegetation types when they were applied to the entire tundra, but ranged from 7.2 to 17.6 Pg C cumulative emissions until 2100 between individual Root Profile Types. Variations in rooting depth distribution are important for the circumpolar tundra carbon-climate feedback but can currently not be inferred adequately from aboveground vegetation type classifications.},
language = {en},
number = {2},
urldate = {2024-03-26},
journal = {New Phytologist},
author = {Blume-Werry, Gesche and Dorrepaal, Ellen and Keuper, Frida and Kummu, Matti and Wild, Birgit and Weedon, James T.},
year = {2023},
note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.18998},
keywords = {\#nosource, arctic tundra, permafrost, plant–soil interactions, rhizosphere priming effect, root biomass, root vertical distribution strategies, rooting depth},
pages = {502--514},
}
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