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Disentangling biology from mathematical necessity in twentieth-century gymnosperm resilience trends

Matters Arising to this article was published on 05 April 2021

The Original Article was published on 15 June 2020

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Fig. 1: Comparison of resilience and resistance measures using the indices employed by Li versus Lloret.

Data availability

Raw tree ring width data were obtained from the ITRDB (version 7.15) at Gridded standardized precipitation evapotranspiration index data (SPEIbase version 2.5) with a spatial resolution of 0.5° were obtained from

Code avilability

All statistical analyses were conducted in R (version 3.5.1) using the following libraries: lme4, lmerTest, MuMIn, performance, bestNormalize, emmeans, dplR, SPEI, ncdf4, effects, Taxonstand and taxonlookup. Additional R code is available at


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Authors and Affiliations



T.Z., M.M., R.G.-V., J.J.C. and J.M.-V. designed the study. A.G. provided the ITRDB database. T.Z. and M.M. analysed the data with input from J.M.-V. and R.G.-V. T.Z. and M.M. wrote the first draft of the manuscript. All authors contributed substantially to revisions.

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Correspondence to Maurizio Mencuccini.

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The authors declare no competing interests.

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Peer review information Nature Ecology & Evolution thanks Nate Mcdowell and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Supplementary information

Supplementary Information

Supplementary Methods, Discussion, Figs. 1 and 2 and Tables 1 and 2.

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Supplementary Data

Supplementary Data 1 and 2: resilience datasets.

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Zheng, T., Martínez-Vilalta, J., García-Valdés, R. et al. Disentangling biology from mathematical necessity in twentieth-century gymnosperm resilience trends. Nat Ecol Evol 5, 733–735 (2021).

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