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Freschet G. T., Pagès L., Iversen C. M., Comas L. H., Rewald B., Roumet C., Klimešová J., Zadworny M., Poorter H., Postma J. A., Adams T. S., Bagniewska-Zadworna A., Bengough A. G., Blancaflor E. B., Brunner I., Cornelissen J. H. C., Garnier E., Gessler A., Hobbie S. E., Meier I. C., et al. 2021. A starting guide to root ecology: strengthening ecological concepts and standardising root classification, sampling, processing and trait measurements. New Phytologist. 232(3): 973-1122. doi:10.1111/nph.17572