Aboveground and belowground sizes are aligned in the unified spectrum of plant form and function

Eleonora Beccari () and Carlos P. Carmona
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Eleonora Beccari: J. Liivi 2
Carlos P. Carmona: J. Liivi 2

Nature Communications, 2024, vol. 15, issue 1, 1-12

Abstract: Abstract Understanding the global variation of plant strategies is essential for unravelling eco-evolutionary processes and ecosystem functions. Variation in ten fundamental aboveground and fine-root traits is summarised in four dimensions, the first of which relates to aboveground plant size. However, there is no consensus about how root size fits within this scheme. Here, we add rooting depth and lateral spread, compiling a set of twelve key traits that define the fundamental investments of plants in growth, reproduction, and survival. We examine whether the inclusion of root size alters the dimensionality and structure of trait correlations defining plant functional strategies. Our results show that including root size traits does not alter the fundamental structure and dimensionality of the plant functional space, regardless of trait completeness and phylogenetic relatedness. Plant size defines a single continuum of allometric investments at the global scale, independent from leaf and root economic strategies.

Date: 2024
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DOI: 10.1038/s41467-024-53180-x

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