Ítem
Acceso Abierto
Heterogeneous thermal tolerance of dominant Andean montane tree species
Título de la revista
Autores
Mercado, Lina M.
Ruiz Carrascal, Daniel
Sánchez Andrade, Adriana
Meir, Patrick
Villegas, Juan Camilo
Restrepo, Zorayda
Hartley, Iain P.
González-Caro, Sebastián
Fecha
2025-12-01
Directores
ISSN de la revista
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Editor
Nature Briefing
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Resumen
Abstract
In tropical montane forests, the Earth’s largest biodiversity hotspots, there is increasing evidence that climate warming is resulting in montane species being displaced by their lowland counterparts. However, the drivers of these changes are poorly understood. Across a large elevation gradient in the Colombian Andes, we established three experimental plantations of 15 dominant tree species including both naturally occurring montane and lowland species and measured their survival and growth. Here we show that 55% of the studied montane species maintained growth at their survival’s hottest temperature with the remaining 45% being intolerant to such levels of warming, declining their growth, while lowland species benefited strongly from the warmest temperatures. Our findings suggest that the direct negative effects of warming and increased competition of montane species with lowland species are promoting increased homogeneity in community composition, resulting in reduced biodiversity.
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Keywords
Ciencias de la Tierra y Planetarias GeneralClimate warming , Biodiversity , Species displacement , Community composition , Reduced biodiversity , Tropical montane forests , Colombian Andes , Elevation gradient , Montane species , Lowland species , Experimental plantations , Tree species , Survival , Growth , Warm temperatures , Growth decline , Direct negative effects , Increased competition
