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Leaf isotopes reveal tree diversity effects on the functional responses to the pan‐European 2018 summer drought

Xin Jing, Christel Baum, Bastien Castagneyrol, Nico Eisenhauer, Olga Ferlian, Tobias Gebauer, Peter Hajek, Hervé Jactel, Bart Muys, Charles A. Nock, et al.
(2024) NEW PHYTOLOGIST. 243(4). p.1312-1328
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Abstract
Recent droughts have strongly impacted forest ecosystems and are projected to increase in frequency, intensity, and duration in the future together with continued warming. While evidence suggests that tree diversity can regulate drought impacts in natural forests, few studies examine whether mixed tree plantations are more resistant to the impacts of severe droughts. Using natural variations in leaf carbon (C) and nitrogen (N) isotopic ratios, that is delta 13C and delta 15N, as proxies for drought response, we analyzed the effects of tree species richness on the functional responses of tree plantations to the pan-European 2018 summer drought in seven European tree diversity experiments. We found that leaf delta 13C decreased with increasing tree species richness, indicating less drought stress. This effect was not related to drought intensity, nor desiccation tolerance of the tree species. Leaf delta 15N increased with drought intensity, indicating a shift toward more open N cycling as water availability diminishes. Additionally, drought intensity was observed to alter the influence of tree species richness on leaf delta 15N from weakly negative under low drought intensity to weakly positive under high drought intensity. Overall, our findings suggest that dual leaf isotope analysis helps understand the interaction between drought, nutrients, and species richness.
Keywords
biodiversity, climate change, drought resistance, ecosystem functioning, species richness, stable isotope, TreeDivNet, tree plantations, PLANT DIVERSITY, ECOSYSTEM FUNCTION, MYCORRHIZAL FUNGI, BIODIVERSITY, CARBON, FORESTS, CLIMATE, DISCRIMINATION, PRODUCTIVITY, IMPACTS

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Citation

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MLA
Jing, Xin, et al. “Leaf Isotopes Reveal Tree Diversity Effects on the Functional Responses to the Pan‐European 2018 Summer Drought.” NEW PHYTOLOGIST, vol. 243, no. 4, 2024, pp. 1312–28, doi:10.1111/nph.19931.
APA
Jing, X., Baum, C., Castagneyrol, B., Eisenhauer, N., Ferlian, O., Gebauer, T., … Van Meerbeek, K. (2024). Leaf isotopes reveal tree diversity effects on the functional responses to the pan‐European 2018 summer drought. NEW PHYTOLOGIST, 243(4), 1312–1328. https://doi.org/10.1111/nph.19931
Chicago author-date
Jing, Xin, Christel Baum, Bastien Castagneyrol, Nico Eisenhauer, Olga Ferlian, Tobias Gebauer, Peter Hajek, et al. 2024. “Leaf Isotopes Reveal Tree Diversity Effects on the Functional Responses to the Pan‐European 2018 Summer Drought.” NEW PHYTOLOGIST 243 (4): 1312–28. https://doi.org/10.1111/nph.19931.
Chicago author-date (all authors)
Jing, Xin, Christel Baum, Bastien Castagneyrol, Nico Eisenhauer, Olga Ferlian, Tobias Gebauer, Peter Hajek, Hervé Jactel, Bart Muys, Charles A. Nock, Quentin Ponette, Laura Rose, Matthias Saurer, Michael Scherer‐Lorenzen, Kris Verheyen, and Koenraad Van Meerbeek. 2024. “Leaf Isotopes Reveal Tree Diversity Effects on the Functional Responses to the Pan‐European 2018 Summer Drought.” NEW PHYTOLOGIST 243 (4): 1312–1328. doi:10.1111/nph.19931.
Vancouver
1.
Jing X, Baum C, Castagneyrol B, Eisenhauer N, Ferlian O, Gebauer T, et al. Leaf isotopes reveal tree diversity effects on the functional responses to the pan‐European 2018 summer drought. NEW PHYTOLOGIST. 2024;243(4):1312–28.
IEEE
[1]
X. Jing et al., “Leaf isotopes reveal tree diversity effects on the functional responses to the pan‐European 2018 summer drought,” NEW PHYTOLOGIST, vol. 243, no. 4, pp. 1312–1328, 2024.
@article{01JK8D2HEG5ZS3P9PNZ6Y0TMWY,
  abstract     = {{Recent droughts have strongly impacted forest ecosystems and are projected to increase in frequency, intensity, and duration in the future together with continued warming. While evidence suggests that tree diversity can regulate drought impacts in natural forests, few studies examine whether mixed tree plantations are more resistant to the impacts of severe droughts. Using natural variations in leaf carbon (C) and nitrogen (N) isotopic ratios, that is delta 13C and delta 15N, as proxies for drought response, we analyzed the effects of tree species richness on the functional responses of tree plantations to the pan-European 2018 summer drought in seven European tree diversity experiments. We found that leaf delta 13C decreased with increasing tree species richness, indicating less drought stress. This effect was not related to drought intensity, nor desiccation tolerance of the tree species. Leaf delta 15N increased with drought intensity, indicating a shift toward more open N cycling as water availability diminishes. Additionally, drought intensity was observed to alter the influence of tree species richness on leaf delta 15N from weakly negative under low drought intensity to weakly positive under high drought intensity. Overall, our findings suggest that dual leaf isotope analysis helps understand the interaction between drought, nutrients, and species richness.}},
  author       = {{Jing, Xin and Baum, Christel and Castagneyrol, Bastien and Eisenhauer, Nico and Ferlian, Olga and Gebauer, Tobias and Hajek, Peter and Jactel, Hervé and Muys, Bart and Nock, Charles A. and Ponette, Quentin and Rose, Laura and Saurer, Matthias and Scherer‐Lorenzen, Michael and Verheyen, Kris and Van Meerbeek, Koenraad}},
  issn         = {{0028-646X}},
  journal      = {{NEW PHYTOLOGIST}},
  keywords     = {{biodiversity,climate change,drought resistance,ecosystem functioning,species richness,stable isotope,TreeDivNet,tree plantations,PLANT DIVERSITY,ECOSYSTEM FUNCTION,MYCORRHIZAL FUNGI,BIODIVERSITY,CARBON,FORESTS,CLIMATE,DISCRIMINATION,PRODUCTIVITY,IMPACTS}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{1312--1328}},
  title        = {{Leaf isotopes reveal tree diversity effects on the functional responses to the pan‐European 2018 summer drought}},
  url          = {{http://doi.org/10.1111/nph.19931}},
  volume       = {{243}},
  year         = {{2024}},
}
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