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Raw tree ring width data were obtained from the ITRDB (version 7.15) at https://www1.ncdc.noaa.gov/pub/data/paleo/treering/. Gridded standardized precipitation evapotranspiration index data (SPEIbase version 2.5) with a spatial resolution of 0.5° were obtained from http://digital.csic.es/handle/10261/153475.
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 https://github.com/mmencuccini/ITRDB-data-analyses.
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The authors declare no competing interests.
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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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). https://doi.org/10.1038/s41559-021-01436-w
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