Tree demographic strategies largely overlap across succession in Neotropical wet and dry forest communities

Schorn Markus E., Kambach Stephan, Chazdon Robin L., Craven Dylan, Farrior Caroline E., Meave Jorge A., Muñoz Rodrigo, Van Breugel Michiel, Amissah Lucy, Bongers Frans, Herault Bruno, Jakovac Catarina C., Norden Natalia, Poorter Lourens, van der Sande Masha T., Wirth Christian, Delgado Diego, Dent Daisy H., DeWalt Saara J., Dupuy Juan M., Finegan Bryan, Hall Jefferson, Hernández-Stefanoni José Luis, Lopez Omar R., Rüger Nadja. 2024. Tree demographic strategies largely overlap across succession in Neotropical wet and dry forest communities. Ecology, 105 (7):e4321, 16 p.

Url - jeu de données - Entrepôt autre : https://doi.org/10.5061/dryad.f7m0cfz4h

Résumé : Secondary tropical forests play an increasingly important role in carbon budgets and biodiversity conservation. Understanding successional trajectories is therefore imperative for guiding forest restoration and climate change mitigation efforts. Forest succession is driven by the demographic strategies—combinations of growth, mortality and recruitment rates—of the tree species in the community. However, our understanding of demographic diversity in tropical tree species stems almost exclusively from old-growth forests. Here, we assembled demographic information from repeated forest inventories along chronosequences in two wet (Costa Rica, Panama) and two dry (Mexico) Neotropical forests to assess whether the ranges of demographic strategies present in a community shift across succession. We calculated demographic rates for >500 tree species while controlling for canopy status to compare demographic diversity (i.e., the ranges of demographic strategies) in early successional (0–30 years), late successional (30–120 years) and old-growth forests using two-dimensional hypervolumes of pairs of demographic rates. Ranges of demographic strategies largely overlapped across successional stages, and early successional stages already covered the full spectrum of demographic strategies found in old-growth forests. An exception was a group of species characterized by exceptionally high mortality rates that was confined to early successional stages in the two wet forests. The range of demographic strategies did not expand with succession. Our results suggest that studies of long-term forest monitoring plots in old-growth forests, from which most of our current understanding of demographic strategies of tropical tree species is derived, are surprisingly representative of demographic diversity in general, but do not replace the need for further studies in secondary forests.

Mots-clés Agrovoc : forêt tropicale, forêt secondaire, inventaire forestier, biodiversité, changement climatique, biodiversité forestière, mortalité, arbre forestier, conservation des forêts, dynamique des populations, atténuation des effets du changement climatique, forêt

Mots-clés géographiques Agrovoc : Costa Rica, Mexique, Panama

Mots-clés libres : Demographic rates, Growth, Life-history strategies, Mortality, Old-growth forests, Recruitment, Secondary succession, Survival

Agences de financement hors UE : Deutsche Forschungsgemeinschaft

Auteurs et affiliations

• Schorn Markus E., University of Leipzig (DEU) - auteur correspondant
• Kambach Stephan, Martin Luther University (DEU)
• Chazdon Robin L., University of Connecticut (USA)
• Craven Dylan, Universidad Mayor (CHL)
• Farrior Caroline E., University of Texas (USA)
• Meave Jorge A., UNAM (MEX)
• Muñoz Rodrigo, UNAM (MEX)
• Van Breugel Michiel, National University of Singapore (SGP)
• Amissah Lucy, FORIG (GHA)
• Bongers Frans, Wageningen University and Research Centre (NLD)
• Herault Bruno, CIRAD-ES-UPR Forêts et sociétés (FRA) ORCID: 0000-0002-6950-7286
• Jakovac Catarina C., Wageningen University (NLD)
• Norden Natalia, Instituto de Investigacion de Recursos Biologicos Alexander von Humboldt (COL)
• Poorter Lourens, Wageningen University (NLD)
• van der Sande Masha T., Wageningen University (NLD)
• Wirth Christian, University of Leipzig (DEU)
• Delgado Diego, CATIE (CRI)
• Dent Daisy H., Smithsonian Tropical Research Institute (PAN)
• DeWalt Saara J., Clemson University (USA)
• Dupuy Juan M., CICY (MEX)
• Finegan Bryan, CATIE (CRI)
• Hall Jefferson, Smithsonian Tropical Research Institute (PAN)
• Hernández-Stefanoni José Luis, CICY (MEX)
• Lopez Omar R., Smithsonian Tropical Research Institute (PAN)
• Rüger Nadja, University of Leipzig (DEU)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610137/)

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