Cumulative nitrogen enrichment alters the drivers of grassland overyielding

Miao He; Kathryn E. Barry; Merel B. Soons; Eric Allan; Seraina L. Cappelli; Dylan Craven; Jiří Doležal; Forest Isbell; Vojtěch Lanta; Jan Lepš; Maowei Liang; Norman Mason; Cecilia Palmborg; Noémie A. Pichon; Laíse da Silveira Pontes; Peter B. Reich; Christiane Roscher; Yann Hautier

doi:10.1038/s42003-024-05999-9

Cumulative nitrogen enrichment alters the drivers of grassland overyielding

Miao He, Kathryn E. Barry, Merel B. Soons, Eric Allan, Seraina L. Cappelli, Dylan Craven, Jiří Doležal, Forest Isbell, Vojtěch Lanta, Jan Lepš, Maowei Liang, Norman Mason, Cecilia Palmborg, Noémie A. Pichon, Laíse da Silveira Pontes, Peter B. Reich, Christiane Roscher, Yann Hautier

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Abstract

Effects of plant diversity on grassland productivity, or overyielding, are found to be robust to nutrient enrichment. However, the impact of cumulative nitrogen (N) addition (total N added over time) on overyielding and its drivers are underexplored. Synthesizing data from 15 multi-year grassland biodiversity experiments with N addition, we found that N addition decreases complementarity effects and increases selection effects proportionately, resulting in no overall change in overyielding regardless of N addition rate. However, we observed a convex relationship between overyielding and cumulative N addition, driven by a shift from complementarity to selection effects. This shift suggests diminishing positive interactions and an increasing contribution of a few dominant species with increasing N accumulation. Recognizing the importance of cumulative N addition is vital for understanding its impacts on grassland overyielding, contributing essential insights for biodiversity conservation and ecosystem resilience in the face of increasing N deposition.

Original language	English (US)
Article number	309
Journal	Communications biology
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s42003-024-05999-9
State	Published - Dec 2024

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© The Author(s) 2024.

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He, M., Barry, K. E., Soons, M. B., Allan, E., Cappelli, S. L., Craven, D., Doležal, J., Isbell, F., Lanta, V., Lepš, J., Liang, M., Mason, N., Palmborg, C., Pichon, N. A., da Silveira Pontes, L., Reich, P. B., Roscher, C., & Hautier, Y. (2024). Cumulative nitrogen enrichment alters the drivers of grassland overyielding. Communications biology, 7(1), Article 309. https://doi.org/10.1038/s42003-024-05999-9

He, M, Barry, KE, Soons, MB, Allan, E, Cappelli, SL, Craven, D, Doležal, J, Isbell, F, Lanta, V, Lepš, J, Liang, M, Mason, N, Palmborg, C, Pichon, NA, da Silveira Pontes, L, Reich, PB, Roscher, C & Hautier, Y 2024, 'Cumulative nitrogen enrichment alters the drivers of grassland overyielding', Communications biology, vol. 7, no. 1, 309. https://doi.org/10.1038/s42003-024-05999-9

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abstract = "Effects of plant diversity on grassland productivity, or overyielding, are found to be robust to nutrient enrichment. However, the impact of cumulative nitrogen (N) addition (total N added over time) on overyielding and its drivers are underexplored. Synthesizing data from 15 multi-year grassland biodiversity experiments with N addition, we found that N addition decreases complementarity effects and increases selection effects proportionately, resulting in no overall change in overyielding regardless of N addition rate. However, we observed a convex relationship between overyielding and cumulative N addition, driven by a shift from complementarity to selection effects. This shift suggests diminishing positive interactions and an increasing contribution of a few dominant species with increasing N accumulation. Recognizing the importance of cumulative N addition is vital for understanding its impacts on grassland overyielding, contributing essential insights for biodiversity conservation and ecosystem resilience in the face of increasing N deposition.",

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doi = "10.1038/s42003-024-05999-9",

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AU - He, Miao

AU - Barry, Kathryn E.

AU - Soons, Merel B.

AU - Allan, Eric

AU - Cappelli, Seraina L.

AU - Craven, Dylan

AU - Doležal, Jiří

AU - Isbell, Forest

AU - Lanta, Vojtěch

AU - Lepš, Jan

AU - Liang, Maowei

AU - Mason, Norman

AU - Palmborg, Cecilia

AU - Pichon, Noémie A.

AU - da Silveira Pontes, Laíse

AU - Reich, Peter B.

AU - Roscher, Christiane

AU - Hautier, Yann

PY - 2024/12

Y1 - 2024/12

N2 - Effects of plant diversity on grassland productivity, or overyielding, are found to be robust to nutrient enrichment. However, the impact of cumulative nitrogen (N) addition (total N added over time) on overyielding and its drivers are underexplored. Synthesizing data from 15 multi-year grassland biodiversity experiments with N addition, we found that N addition decreases complementarity effects and increases selection effects proportionately, resulting in no overall change in overyielding regardless of N addition rate. However, we observed a convex relationship between overyielding and cumulative N addition, driven by a shift from complementarity to selection effects. This shift suggests diminishing positive interactions and an increasing contribution of a few dominant species with increasing N accumulation. Recognizing the importance of cumulative N addition is vital for understanding its impacts on grassland overyielding, contributing essential insights for biodiversity conservation and ecosystem resilience in the face of increasing N deposition.

AB - Effects of plant diversity on grassland productivity, or overyielding, are found to be robust to nutrient enrichment. However, the impact of cumulative nitrogen (N) addition (total N added over time) on overyielding and its drivers are underexplored. Synthesizing data from 15 multi-year grassland biodiversity experiments with N addition, we found that N addition decreases complementarity effects and increases selection effects proportionately, resulting in no overall change in overyielding regardless of N addition rate. However, we observed a convex relationship between overyielding and cumulative N addition, driven by a shift from complementarity to selection effects. This shift suggests diminishing positive interactions and an increasing contribution of a few dominant species with increasing N accumulation. Recognizing the importance of cumulative N addition is vital for understanding its impacts on grassland overyielding, contributing essential insights for biodiversity conservation and ecosystem resilience in the face of increasing N deposition.

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Cumulative nitrogen enrichment alters the drivers of grassland overyielding

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