Successional shifts in tree demographic strategies in wet and dry Neotropical forests
Por:
Rüger N., Schorn M.E., Kambach S., Chazdon R.L., Farrior C.E., Meave J.A., Muñoz R., van Breugel M., Amissah L., Bongers F., Craven D., Hérault B., Jakovac C.C., Norden N., Poorter L., van der Sande M.T., Wirth C., Delgado D., Dent D.H., DeWalt S.J., Dupuy J.M., Finegan B., Hall J.S., Hernández-Stefanoni J.L., Lopez O.R.
Publicada:
1 jun 2023
Ahead of Print:
1 mar 2023
Resumen:
Aim: Tropical forest succession and associated changes in community composition are driven by species demographic rates, but how demographic strategies shift during succession remains unclear. Our goal was to identify generalities in demographic trade-offs and successional shifts in demographic strategies across Neotropical forests that cover a large rainfall gradient and to test whether the current conceptual model of tropical forest succession applies to wet and dry forests.Location: Mexico and Central America.Time period: 1985-2018.Major taxa studied: Trees.Methods: We used repeated forest inventory data from two wet and two dry forests to quantify demographic rates of 781 tree species. For each forest, we explored the main demographic trade-offs and assigned tree species to five demographic groups by performing a weighted principal components analysis to account for differences in sample size. We aggregated the basal area and abundance across demographic groups to identify successional shifts in demographic strategies over the entire successional gradient from very young (<5 years) to old-growth forests.Results: Across all forests, we found two demographic trade-offs, namely the growth-survival trade-off and the stature-recruitment trade-off, enabling the data-driven assignment of species to five demographic strategies. Fast species dominated early in succession and were then replaced by long-lived pioneers in three forests. Intermediate and slow species increased in basal area over succession in all forests, but, in contrast to the current conceptual model, long-lived pioneers continued to dominate until the old-growth stage in all forests. The basal area of short-lived breeders was low across all successional stages.Main conclusions: The current conceptual model of Neotropical forest succession should be revised to incorporate the dominance of long-lived pioneers in late-successional and old-growth forests. Moreover, the definition of consistent demographic strategies that show clear dominance shifts across succession substantially improves the mechanistic understanding and predictability of Neotropical forest succession.
Filiaciones:
German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Leipzig, Germany
Department of Economics, Institute of Empirical Economic Research, University of Leipzig, Leipzig, Germany
Smithsonian Tropical Research Institute, Ancón, Panama
Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, Halle, Germany
Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, United States
Tropical Forests and People Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD, Australia
Department of Integrative Biology, University of Texas at Austin, Austin, TX, United States
Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
Forest Ecology and Forest Management Group, Wageningen University & Research, Wageningen, Netherlands
Yale-NUS College, Singapore, Singapore
Department of Geography, National University of Singapore, Singapore, Singapore
ForestGEO, Smithsonian Tropical Research Institute, Ancón, Panama
CSIR-Forestry Research Institute of Ghana, Kumasi, Ghana
Centro de Modelación y Monitoreo de Ecosistemas, Facultud de Sciencias, Universidad Mayor, Santiago, Chile
CIRAD, UPR Forêts et Sociétés, Yamoussoukro, Cote d'Ivoire
Forêts et Sociétés, Université Montpellier, CIRAD, Montpellier, France
Institut National Polytechnique Félix Houphouët-Boigny, INP-HB, Yamoussoukro, Cote d'Ivoire
Departamento de Fitotecnia, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina, Florianópolis, Brazil
Programa de Ciencias Básicas de la Biodiversidad, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Bogotá, Colombia
Systematic Botany and Functional Biodiversity, Institute for Biology, Leipzig University, Leipzig, Germany
Max-Planck Institute for Biogeochemistry, Jena, Germany
Forests and Biodiversity in Productive Landscapes, CATIE, Turrialba, Costa Rica
Biological and Environmental Sciences, University of Stirling, Stirling, United Kingdom
Department of Environmental Systems Science, Institute of Integrative Biology, ETH-Zürich, Zürich, Switzerland
Clemson University, Clemson, SC, United States
Centro de Investigación Científica de Yucatán (CICY), Unidad de Recursos Naturales, Yucatán, Mérida, Mexico
Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT), Ciudad del Saber, Clayton, Panama
Green Submitted, hybrid, Green Published, All Open Access, Hybrid Gold, Green
|