Dominance and rarity in tree communities across the globe: Patterns, predictors and threats

• Autores: Hordijk, Iris; Bialic Murphy, Lalasia; Lauber, Thomas; Routh, Devin; Poorter, Lourens; Rivers, Malin C.; ter Steege, Hans; Liang, Jingjing; Reich, Peter B.; de Miguel, Sergio; Nabuurs, Gert Jan; Gamarra, Javier G. P.; Chen, Han Y. H.; Zhou, Mo; Wiser, Susan K.; Pretzsch, Hans; Paquette, Alain; Picard, Nicolas; Hérault, Bruno; Bastin, Jean Francois; Alberti, Giorgio; Abegg, Meinrad; Adou Yao, Yves C.; Almeyda Zambrano, Angelica M.; Peri, Pablo Luis; Zhao, Xiuhai; Zhu, Zhi Xin; Zo Bi, Irie Casimir; Maynard, Daniel S.; Crowther, Thomas W.
• Año de publicación: 2024
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: community; environmental predictors; dominance; forests
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Ecological and anthropogenic factors shift the abundances of dominant and rare tree species within local forest communities, thus affecting species composition and ecosystem functioning. To inform forest and conservation management it is important to understand the drivers of dominance and rarity in local tree communities. We answer the following research questions: (1) What are the patterns of dominance and rarity in tree communities? (2) Which ecological and anthropogenic factors predict these patterns? And (3) what is the extinction risk of locally dominant and rare tree species? We used 1.2 million forest plots and quantified local tree dominance as the relative plot basal area of the single most dominant species and local rarity as the percentage of species that contribute together to the least 10% of plot basal area. We mapped global community dominance and rarity using machine learning models and evaluated the ecological and anthropogenic predictors with linear models. Extinction risk, for example threatened status, of geographically widespread dominant and rare species was evaluated. Community dominance and rarity show contrasting latitudinal trends, with boreal forests having high levels of dominance and tropical forests having high levels of rarity. Increasing annual precipitation reduces community dominance, probably because precipitation is related to an increase in tree density and richness. Additionally, stand age is positively related to community dominance, due to stem diameter increase of the most dominant species. Surprisingly, we find that locally dominant and rare species, which are geographically widespread in our data, have an equally high rate of elevated extinction due to declining populations through large-scale land degradation. By linking patterns and predictors of community dominance and rarity to extinction risk, our results suggest that also widespread species should be considered in large-scale management and conservation practices.
Fil: Hordijk, Iris. Swiss Federal Institute of Technology Zurich; Suiza. Wageningen University and Research; Países Bajos
Fil: Bialic Murphy, Lalasia. Swiss Federal Institute of Technology Zurich; Suiza
Fil: Lauber, Thomas. Swiss Federal Institute of Technology Zurich; Suiza
Fil: Routh, Devin. Universitat Zurich; Suiza
Fil: Poorter, Lourens. Universitat Zurich; Suiza
Fil: Rivers, Malin C.. Botanic Gardens Conservation International; Reino Unido
Fil: ter Steege, Hans. Utrecht University; Países Bajos
Fil: Liang, Jingjing. Purdue University; Estados Unidos
Fil: Reich, Peter B.. University of Minnesota; Estados Unidos. University of Western Sydney; Australia
Fil: de Miguel, Sergio. Universidad de Lleida; España
Fil: Nabuurs, Gert Jan. University of Agriculture Wageningen; Países Bajos
Fil: Gamarra, Javier G. P.. Food and Agriculture Organization of the United Nations; Italia
Fil: Chen, Han Y. H.. Lakehead University; Canadá
Fil: Zhou, Mo. Purdue University; Estados Unidos
Fil: Wiser, Susan K.. Manaaki Whenua–Landcare Research; Nueva Zelanda
Fil: Pretzsch, Hans. Universitat Technical Zu Munich; Alemania
Fil: Paquette, Alain. Université du Québec a Montreal; Canadá
Fil: Picard, Nicolas. Groupement d'Intérêt Public sur les écosystèmes forestiers; Francia
Fil: Hérault, Bruno. National Polytechnic Institute; Costa de Marfil
Fil: Bastin, Jean Francois. University of Liege; Bélgica
Fil: Alberti, Giorgio. University of Bolzano; Italia. University of Udine; Italia
Fil: Abegg, Meinrad. Swiss Federal Institute for Forest, Snow and Landscape Research; Suiza
Fil: Adou Yao, Yves C.. University Félix Houphouët-Boigny; Costa de Marfil
Fil: Almeyda Zambrano, Angelica M.. University of Florida; Estados Unidos
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Tecnológica Nacional. Facultad Regional Santa Cruz. Centro de Investigaciones y Transferencia de Santa Cruz. Universidad Nacional de la Patagonia Austral. Centro de Investigaciones y Transferencia de Santa Cruz; Argentina
Fil: Zhao, Xiuhai. Beijing Forestry University; China
Fil: Zhu, Zhi Xin. Hainan University; China
Fil: Zo Bi, Irie Casimir. National Polytechnic Institute; Costa de Marfil
Fil: Maynard, Daniel S.. Swiss Federal Institute of Technology Zurich; Suiza. University College London; Reino Unido
Fil: Crowther, Thomas W.. Swiss Federal Institute of Technology Zurich; Suiza