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Las precipitaciones impulsan la variación global en la selección natural
Adam M Siepielski1, Michael B Morrissey2, Mathieu Buoro3
1Department of Biological Sciences, University of Arkansas, Fayetteville, AR, USA. amsiepie@uark.edu.
Resumen
Impacto del cambio climático en las especies
Área de la Ciencia:
- Ecología y biología evolutiva
- Ciencia del cambio climático
Sus antecedentes:
- Los efectos ecológicos del cambio climático están bien documentados.
- Los impactos en la selección natural, un proceso evolutivo clave, son en gran medida desconocidos.
Objetivo del estudio:
- Investigar cómo las variaciones climáticas influyen en la selección natural.
- Para determinar si el cambio climático podría alterar las trayectorias evolutivas.
Principales métodos:
- Datos climáticos analizados (precipitación, evapotranspiración, oscilación del Atlántico Norte y temperatura).
- Variación evaluada de la selección natural entre las poblaciones de plantas y animales en los biomas terrestres.
Principales resultados:
- La precipitación, la evapotranspiración y la oscilación del Atlántico Norte predijeron la variación de la selección.
- La temperatura explicó poca variación en la selección natural.
- La variación climática influye significativamente en la selección entre diversas poblaciones.
Conclusiones:
- El cambio climático puede alterar los regímenes de selección a nivel mundial.
- Los cambios generalizados en la selección natural pueden cambiar las trayectorias evolutivas.
- Los factores climáticos no relacionados con la temperatura son factores clave para la variación de la selección.
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