Produção Nacional
Revisado por pares
Latitudinal patterns in stabilizing density dependence of forest communities
2024; Nature Portfolio; Volume: 627; Issue: 8004 Linguagem: Inglês
10.1038/s41586-024-07118-4
ISSN1476-4687
AutoresLisa Hülsmann, Ryan A. Chisholm, Liza S. Comita, Marco D. Visser, Melina de Souza Leite, Salomón Aguilar, Kristina J. Anderson‐Teixeira, Norman A. Bourg, Warren Y. Brockelman, Sarayudh Bunyavejchewin, Nicolás Castaño Arboleda, Chia‐Hao Chang‐Yang, George B. Chuyong, Keith Clay, Stuart J. Davies, Álvaro Duque, Sisira Ediriweera, Corneille E. N. Ewango, Gregory S. Gilbert, Jan Holík, Robert W. Howe, Stephen P. Hubbell, Akira Itoh, Daniel J. Johnson, David Kenfack, Kamil Král, Andrew J. Larson, James A. Lutz, Jean‐Remy Makana, Yadvinder Malhi, Sean M. McMahon, William J. McShea, Mohizah Mohamad, Musalmah Nasardin, Anuttara Nathalang, Natalia Norden, Alexandre A. Oliveira, Renan Parmigiani, Rolando Pérez, Richard P. Phillips, Nantachai Pongpattananurak, I‐Fang Sun, Mark E. Swanson, Sylvester Tan, Duncan W. Thomas, Jill Thompson, María Uriarte, Amy Wolf, Tze Leong Yao, Jess K. Zimmerman, Daniel Zuleta, Florian Härtig,
Tópico(s)Species Distribution and Climate Change
ResumoAbstract Numerous studies have shown reduced performance in plants that are surrounded by neighbours of the same species 1,2 , a phenomenon known as conspecific negative density dependence (CNDD) 3 . A long-held ecological hypothesis posits that CNDD is more pronounced in tropical than in temperate forests 4,5 , which increases community stabilization, species coexistence and the diversity of local tree species 6,7 . Previous analyses supporting such a latitudinal gradient in CNDD 8,9 have suffered from methodological limitations related to the use of static data 10–12 . Here we present a comprehensive assessment of latitudinal CNDD patterns using dynamic mortality data to estimate species-site-specific CNDD across 23 sites. Averaged across species, we found that stabilizing CNDD was present at all except one site, but that average stabilizing CNDD was not stronger toward the tropics. However, in tropical tree communities, rare and intermediate abundant species experienced stronger stabilizing CNDD than did common species. This pattern was absent in temperate forests, which suggests that CNDD influences species abundances more strongly in tropical forests than it does in temperate ones 13 . We also found that interspecific variation in CNDD, which might attenuate its stabilizing effect on species diversity 14,15 , was high but not significantly different across latitudes. Although the consequences of these patterns for latitudinal diversity gradients are difficult to evaluate, we speculate that a more effective regulation of population abundances could translate into greater stabilization of tropical tree communities and thus contribute to the high local diversity of tropical forests.
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