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Globally, tree fecundity exceeds productivity gradients

2022; Wiley; Volume: 25; Issue: 6 Linguagem: Inglês

10.1111/ele.14012

1461-0248

Valentin Journé, Robert A. Andrus, Marie‐Claire Aravena Acuña, Davide Ascoli, Roberta Berretti, Daniel Berveiller, Michał Bogdziewicz, Thomas Boivin, Raúl Bonal, Thomas Caignard, Rafael Calama, J. Julio Camarero, Chia‐Hao Chang‐Yang, Benoı̂t Courbaud, François Courbet, T. Curt, Adrian J. Das, Evangelia N. Daskalakou, Hendrik Davi, Nicolas Delpierre, Sylvain Delzon, Michael C. Dietze, Sergio Donoso Calderón, Laurent Dormont, Josep María Espelta, Timothy J. Fahey, William Farfán-Ríos, Catherine A. Gehring, Gregory S. Gilbert, Georg Gratzer, Cathryn H. Greenberg, Qinfeng Guo, Andrew Hacket‐Pain, Arndt Hampe, Qingmin Han, Janneke Hille Ris Lambers, Kazuhiko Hoshizaki, Inés Ibáñez, Jill F. Johnstone, Daisuke Kabeya, Roland Kays, Thomas Kitzberger, Johannes M. H. Knops, Richard K. Kobe, Georges Künstler, Jonathan G. A. Lageard, Jalene M. LaMontagne, Theodor D. Leininger, Jean‐Marc Limousin, James A. Lutz, Diana Macias, Eliot J. B. McIntire, Christopher M. Moore, Emily Moran, Renzo Motta, Jonathan A. Myers, Thomas A. Nagel, Kyotaro Noguchi, Jean‐Marc Ourcival, Robert Parmenter, Ian S. Pearse, Ignacio Manuel Pérez-Ramos, Łukasz Piechnik, John R. Poulsen, Renata Poulton‐Kamakura, Tong Qiu, Miranda D. Redmond, Chantal D. Reid, Kyle C. Rodman, Francisco Rodríguez‐Sánchez, Javier Sanguinetti, C. Lane Scher, Harald Schmidt Van Marle, Barbara Seget, Shubhi Sharma, Miles R. Silman, Michael A. Steele, Nathan L. Stephenson, Jacob N. Straub, Jennifer J. Swenson, Margaret Swift, Peter A. Thomas, María Uriarte, Giorgio Vacchiano, Thomas T. Veblen, Amy V. Whipple, Thomas G. Whitham, Boyd R. Wright, S. Joseph Wright‬, Kai Zhu, Jess K. Zimmerman, Roman Zlotin, Magdalena Żywiec, James S. Clark,

Animal Ecology and Behavior Studies

Lack of tree fecundity data across climatic gradients precludes the analysis of how seed supply contributes to global variation in forest regeneration and biotic interactions responsible for biodiversity. A global synthesis of raw seedproduction data shows a 250-fold increase in seed abundance from cold-dry to warm-wet climates, driven primarily by a 100-fold increase in seed production for a given tree size. The modest (threefold) increase in forest productivity across the same climate gradient cannot explain the magnitudes of these trends. The increase in seeds per tree can arise from adaptive evolution driven by intense species interactions or from the direct effects of a warm, moist climate on tree fecundity. Either way, the massive differences in seed supply ramify through food webs potentially explaining a disproportionate role for species interactions in the wet tropics.