PCI Ecology

465

Title

High intraspecific growth variability despite strong evolutionary heritage in a neotropical forestuse asterix (*) to get italics

Authors

Sylvain Schmitt, Bruno Hérault, Géraldine DerroirePlease use the format "First name initials family name" as in "Marie S. Curie, Niels H. D. Bohr, Albert Einstein, John R. R. Tolkien, Donna T. Strickland"

Year

2023

Picture

Abstract

<p style="text-align: justify;">Individual tree growth is a key determinant of species performance and a driver of forest dynamics and composition. Previous studies on tree growth unravelled the variation in species growth as a function of demographic trade-offs that are partially predicted using functional traits. They have explored the environmental determinants of species growth potential and the variation of intraspecific growth over space and time due to environment and biotic factors. However, variation in individual growth within species remains underexplored for a whole community and the relative role of species’ evolutionary heritage and of local environments remains unquantified. Here, based on 36 years of diameter records for thousands of mapped individuals belonging to 138 species, we assessed individual tree growth potential in a local neotropical forest community in the Amazon basin. We further related variation in individual growth potential with taxonomic levels, local topography, and neighbourhood crowding, before exploring species growth potential link to functional traits and distribution along the phylogeny. We found that most of the variation in growth potential was individual, and that taxonomic structure explained a third of the observed variation. Species growth potential was phylogenetically conserved with positive conservatism up to the genus level in the vast majority of species. Functional traits of roots, wood and leaves together predicted species growth potential. Phylogeny suggested joint selection of species' growth strategies and associated functional traits during convergent evolutions. Finally, neighbourhood crowding had a significant effect on individual growth potential, although much of this inter-individual variation remains largely unexplained and the underlying ecological and evolutionary factors are still little explored. The high intraspecific variation observed could allow individuals in these hyperdiverse ecosystems to respond to the variable light and competitive conditions offered by successional niches during forest gap dynamics.</p>

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https://dataverse.cirad.fr/dataverse/paracou, https://doi.org/10.18167/DVN1/NSCWF0, https://doi.org/10.18167/DVN1/Q8V2YI, https://doi.org/10.18167/DVN1/LIVCEK, https://doi.org/10.18167/DVN1/HWTD4U, https://doi.org/10.18167/DVN1/HIGNWQYou should fill this box only if you chose 'All or part of the results presented in this preprint are based on data'. URL must start with http:// or https://

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https://github.com/sylvainschmitt/treegrowthYou should fill this box only if you chose 'Scripts were used to obtain or analyze the results'. URL must start with http:// or https://

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Keywords

tree growth, phylogeny, functional traits, forest gap dynamics, topography, Paracou

Methods that require specific expertise (optional)

NonePlease indicate the methods that may require specialised expertise during the peer review process (use a comma to separate various required expertises).

Thematic fields

Community ecology, Demography, Population ecology

Suggested reviewers - Suggest up to 10 reviewers (provide names and Email addresses). (Optional)

Helene Muller Landau [mullerh@si.edu], Nadja Rüger [nadja.rueger@idiv.de], James Clark [jimclark@duke.edu], Michael O'Brien [mikey.j.obrien@gmail.com], Lourens Poorter [lourens.poorter@wur.nl] No need for them to be recommenders of PCIEcology. Please do not suggest reviewers for whom there might be a conflict of interest. Reviewers are not allowed to review preprints written by close colleagues (with whom they have published in the last four years, with whom they have received joint funding in the last four years, or with whom they are currently writing a manuscript, or submitting a grant proposal), or by family members, friends, or anyone for whom bias might affect the nature of the review - see the code of conduct

Opposed reviewers - Suggest up to 5 people not to invite as reviewers. (Optional)

e.g. John Doe [john@doe.com]

Submission date

2022-08-01 14:29:04

Recommender

François Munoz

Reviewers

Jelena Pantel, David Murray-Stoker

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