A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen

Research output: Contribution to journalLetterpeer-review

Standard

A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen. / Clemmensen, Karina Engelbrecht; Durling, Mikael Brandström; Michelsen, Anders; Hallin, Sara; Finlay, Roger D.; Lindahl, Björn D.

In: Ecology Letters, Vol. 24, No. 6, 2021, p. 1193-1204.

Research output: Contribution to journalLetterpeer-review

Harvard

Clemmensen, KE, Durling, MB, Michelsen, A, Hallin, S, Finlay, RD & Lindahl, BD 2021, 'A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen', Ecology Letters, vol. 24, no. 6, pp. 1193-1204. https://doi.org/10.1111/ele.13735

APA

Clemmensen, K. E., Durling, M. B., Michelsen, A., Hallin, S., Finlay, R. D., & Lindahl, B. D. (2021). A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen. Ecology Letters, 24(6), 1193-1204. https://doi.org/10.1111/ele.13735

Vancouver

Clemmensen KE, Durling MB, Michelsen A, Hallin S, Finlay RD, Lindahl BD. A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen. Ecology Letters. 2021;24(6):1193-1204. https://doi.org/10.1111/ele.13735

Author

Clemmensen, Karina Engelbrecht ; Durling, Mikael Brandström ; Michelsen, Anders ; Hallin, Sara ; Finlay, Roger D. ; Lindahl, Björn D. / A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen. In: Ecology Letters. 2021 ; Vol. 24, No. 6. pp. 1193-1204.

Bibtex

@article{a6f39ce8e97c4fafaf280ecf7ea61989,
title = "A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen",
abstract = "Tundra ecosystems are global belowground sinks for atmospheric CO2. Ongoing warming-induced encroachment by shrubs and trees risks turning this sink into a CO2 source, resulting in a positive feedback on climate warming. To advance mechanistic understanding of how shifts in mycorrhizal types affect long-term carbon (C) and nitrogen (N) stocks, we studied small-scale soil depth profiles of fungal communities and C–N dynamics across a subarctic-alpine forest-heath vegetation gradient. Belowground organic stocks decreased abruptly at the transition from heath to forest, linked to the presence of certain tree-associated ectomycorrhizal fungi that contribute to decomposition when mining N from organic matter. In contrast, ericoid mycorrhizal plants and fungi were associated with organic matter accumulation and slow decomposition. If climatic controls on arctic-alpine forest lines are relaxed, increased decomposition will likely outbalance increased plant productivity, decreasing the overall C sink capacity of displaced tundra.",
keywords = "Arctic warming, carbon sequestration, decomposition, functional genes, meta-barcoding, mycorrhizal type, nitrogen cycling, soil fungal communities, stable isotopes, treeline ecotone",
author = "Clemmensen, {Karina Engelbrecht} and Durling, {Mikael Brandstr{\"o}m} and Anders Michelsen and Sara Hallin and Finlay, {Roger D.} and Lindahl, {Bj{\"o}rn D.}",
year = "2021",
doi = "10.1111/ele.13735",
language = "English",
volume = "24",
pages = "1193--1204",
journal = "Ecology Letters",
issn = "1461-023X",
publisher = "Wiley-Blackwell",
number = "6",

}

RIS

TY - JOUR

T1 - A tipping point in carbon storage when forest expands into tundra is related to mycorrhizal recycling of nitrogen

AU - Clemmensen, Karina Engelbrecht

AU - Durling, Mikael Brandström

AU - Michelsen, Anders

AU - Hallin, Sara

AU - Finlay, Roger D.

AU - Lindahl, Björn D.

PY - 2021

Y1 - 2021

N2 - Tundra ecosystems are global belowground sinks for atmospheric CO2. Ongoing warming-induced encroachment by shrubs and trees risks turning this sink into a CO2 source, resulting in a positive feedback on climate warming. To advance mechanistic understanding of how shifts in mycorrhizal types affect long-term carbon (C) and nitrogen (N) stocks, we studied small-scale soil depth profiles of fungal communities and C–N dynamics across a subarctic-alpine forest-heath vegetation gradient. Belowground organic stocks decreased abruptly at the transition from heath to forest, linked to the presence of certain tree-associated ectomycorrhizal fungi that contribute to decomposition when mining N from organic matter. In contrast, ericoid mycorrhizal plants and fungi were associated with organic matter accumulation and slow decomposition. If climatic controls on arctic-alpine forest lines are relaxed, increased decomposition will likely outbalance increased plant productivity, decreasing the overall C sink capacity of displaced tundra.

AB - Tundra ecosystems are global belowground sinks for atmospheric CO2. Ongoing warming-induced encroachment by shrubs and trees risks turning this sink into a CO2 source, resulting in a positive feedback on climate warming. To advance mechanistic understanding of how shifts in mycorrhizal types affect long-term carbon (C) and nitrogen (N) stocks, we studied small-scale soil depth profiles of fungal communities and C–N dynamics across a subarctic-alpine forest-heath vegetation gradient. Belowground organic stocks decreased abruptly at the transition from heath to forest, linked to the presence of certain tree-associated ectomycorrhizal fungi that contribute to decomposition when mining N from organic matter. In contrast, ericoid mycorrhizal plants and fungi were associated with organic matter accumulation and slow decomposition. If climatic controls on arctic-alpine forest lines are relaxed, increased decomposition will likely outbalance increased plant productivity, decreasing the overall C sink capacity of displaced tundra.

KW - Arctic warming

KW - carbon sequestration

KW - decomposition

KW - functional genes

KW - meta-barcoding

KW - mycorrhizal type

KW - nitrogen cycling

KW - soil fungal communities

KW - stable isotopes

KW - treeline ecotone

U2 - 10.1111/ele.13735

DO - 10.1111/ele.13735

M3 - Letter

C2 - 33754469

AN - SCOPUS:85102836561

VL - 24

SP - 1193

EP - 1204

JO - Ecology Letters

JF - Ecology Letters

SN - 1461-023X

IS - 6

ER -

ID: 260189272