Climatic controls of decomposition drive the global biogeography of forest-tree symbioses

B.S. Steidinger, T.W. Crowther, J. Liang, M.E. Van Nuland, G.D.A. Werner, P.B. Reich, G. Nabuurs, S. de-Miguel, M. Zhou, N. Picard, B. Herault, X. Zhao, C. Zhang, D. Routh, K.G. Peay, M. Herold, M. Decuyper, V. Avitabile, B.R. DeVries, G.M. Hengeveld & 3 others L. Poorter, M. Schelhaas, F. Bongers

Research output: Contribution to journalLetterAcademicpeer-review

3 Citations (Scopus)

Abstract

The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools1,2, sequester carbon3,4 and withstand the effects of climate change5,6. Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species7, constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species.
LanguageEnglish
Pages404-408
JournalNature
Volume569
Issue number7756
DOIs
Publication statusPublished - 15 May 2019

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symbiosis
biogeography
decomposition
climate
biome
forest inventory
symbiont
tropical forest
forest ecosystem
soil
microorganism
stem
fungus
distribution
nutrient
nitrogen
temperature

Cite this

Steidinger, B. S., Crowther, T. W., Liang, J., Van Nuland, M. E., Werner, G. D. A., Reich, P. B., ... Bongers, F. (2019). Climatic controls of decomposition drive the global biogeography of forest-tree symbioses. Nature, 569(7756), 404-408. https://doi.org/10.1038/s41586-019-1128-0
Steidinger, B.S. ; Crowther, T.W. ; Liang, J. ; Van Nuland, M.E. ; Werner, G.D.A. ; Reich, P.B. ; Nabuurs, G. ; de-Miguel, S. ; Zhou, M. ; Picard, N. ; Herault, B. ; Zhao, X. ; Zhang, C. ; Routh, D. ; Peay, K.G. ; Herold, M. ; Decuyper, M. ; Avitabile, V. ; DeVries, B.R. ; Hengeveld, G.M. ; Poorter, L. ; Schelhaas, M. ; Bongers, F. / Climatic controls of decomposition drive the global biogeography of forest-tree symbioses. In: Nature. 2019 ; Vol. 569, No. 7756. pp. 404-408.
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title = "Climatic controls of decomposition drive the global biogeography of forest-tree symbioses",
abstract = "The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools1,2, sequester carbon3,4 and withstand the effects of climate change5,6. Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2{\%} of all plant species7, constitute approximately 60{\%} of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species.",
author = "B.S. Steidinger and T.W. Crowther and J. Liang and {Van Nuland}, M.E. and G.D.A. Werner and P.B. Reich and G. Nabuurs and S. de-Miguel and M. Zhou and N. Picard and B. Herault and X. Zhao and C. Zhang and D. Routh and K.G. Peay and M. Herold and M. Decuyper and V. Avitabile and B.R. DeVries and G.M. Hengeveld and L. Poorter and M. Schelhaas and F. Bongers",
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Steidinger, BS, Crowther, TW, Liang, J, Van Nuland, ME, Werner, GDA, Reich, PB, Nabuurs, G, de-Miguel, S, Zhou, M, Picard, N, Herault, B, Zhao, X, Zhang, C, Routh, D, Peay, KG, Herold, M, Decuyper, M, Avitabile, V, DeVries, BR, Hengeveld, GM, Poorter, L, Schelhaas, M & Bongers, F 2019, 'Climatic controls of decomposition drive the global biogeography of forest-tree symbioses', Nature, vol. 569, no. 7756, pp. 404-408. https://doi.org/10.1038/s41586-019-1128-0

Climatic controls of decomposition drive the global biogeography of forest-tree symbioses. / Steidinger, B.S.; Crowther, T.W.; Liang, J.; Van Nuland, M.E.; Werner, G.D.A.; Reich, P.B.; Nabuurs, G.; de-Miguel, S.; Zhou, M.; Picard, N.; Herault, B.; Zhao, X.; Zhang, C.; Routh, D.; Peay, K.G.; Herold, M.; Decuyper, M.; Avitabile, V.; DeVries, B.R.; Hengeveld, G.M.; Poorter, L.; Schelhaas, M.; Bongers, F.

In: Nature, Vol. 569, No. 7756, 15.05.2019, p. 404-408.

Research output: Contribution to journalLetterAcademicpeer-review

TY - JOUR

T1 - Climatic controls of decomposition drive the global biogeography of forest-tree symbioses

AU - Steidinger, B.S.

AU - Crowther, T.W.

AU - Liang, J.

AU - Van Nuland, M.E.

AU - Werner, G.D.A.

AU - Reich, P.B.

AU - Nabuurs, G.

AU - de-Miguel, S.

AU - Zhou, M.

AU - Picard, N.

AU - Herault, B.

AU - Zhao, X.

AU - Zhang, C.

AU - Routh, D.

AU - Peay, K.G.

AU - Herold, M.

AU - Decuyper, M.

AU - Avitabile, V.

AU - DeVries, B.R.

AU - Hengeveld, G.M.

AU - Poorter, L.

AU - Schelhaas, M.

AU - Bongers, F.

PY - 2019/5/15

Y1 - 2019/5/15

N2 - The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools1,2, sequester carbon3,4 and withstand the effects of climate change5,6. Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species7, constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species.

AB - The identity of the dominant root-associated microbial symbionts in a forest determines the ability of trees to access limiting nutrients from atmospheric or soil pools1,2, sequester carbon3,4 and withstand the effects of climate change5,6. Characterizing the global distribution of these symbioses and identifying the factors that control this distribution are thus integral to understanding the present and future functioning of forest ecosystems. Here we generate a spatially explicit global map of the symbiotic status of forests, using a database of over 1.1 million forest inventory plots that collectively contain over 28,000 tree species. Our analyses indicate that climate variables—in particular, climatically controlled variation in the rate of decomposition—are the primary drivers of the global distribution of major symbioses. We estimate that ectomycorrhizal trees, which represent only 2% of all plant species7, constitute approximately 60% of tree stems on Earth. Ectomycorrhizal symbiosis dominates forests in which seasonally cold and dry climates inhibit decomposition, and is the predominant form of symbiosis at high latitudes and elevation. By contrast, arbuscular mycorrhizal trees dominate in aseasonal, warm tropical forests, and occur with ectomycorrhizal trees in temperate biomes in which seasonally warm-and-wet climates enhance decomposition. Continental transitions between forests dominated by ectomycorrhizal or arbuscular mycorrhizal trees occur relatively abruptly along climate-driven decomposition gradients; these transitions are probably caused by positive feedback effects between plants and microorganisms. Symbiotic nitrogen fixers—which are insensitive to climatic controls on decomposition (compared with mycorrhizal fungi)—are most abundant in arid biomes with alkaline soils and high maximum temperatures. The climatically driven global symbiosis gradient that we document provides a spatially explicit quantitative understanding of microbial symbioses at the global scale, and demonstrates the critical role of microbial mutualisms in shaping the distribution of plant species.

U2 - 10.1038/s41586-019-1128-0

DO - 10.1038/s41586-019-1128-0

M3 - Letter

VL - 569

SP - 404

EP - 408

JO - Nature

T2 - Nature

JF - Nature

SN - 0028-0836

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Steidinger BS, Crowther TW, Liang J, Van Nuland ME, Werner GDA, Reich PB et al. Climatic controls of decomposition drive the global biogeography of forest-tree symbioses. Nature. 2019 May 15;569(7756):404-408. https://doi.org/10.1038/s41586-019-1128-0