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Temperaturas letalmente altas durante el invernadero del Triásico Temprano
Yadong Sun1, Michael M Joachimski, Paul B Wignall
1State Key Laboratory of Geobiology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, People's Republic of China. eeys@leeds.ac.uk
Science (New York, N.Y.)
|October 23, 2012
Resumen
El calentamiento global causó la extinción masiva de finales del Pérmico con un rápido aumento de la temperatura, dañando la vida ecuatorial y obstaculizando la recuperación del ecosistema. Este evento tuvo un impacto significativo en los ecosistemas marinos y terrestres durante el período Triásico Temprano.
Área de la Ciencia:
- Paleontología Paleontología.
- Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
- Ecología Ecología Ecología.
Sus antecedentes:
- El calentamiento global es un factor conocido en crisis bióticas pasadas.
- La extinción masiva de finales del Pérmico es un evento significativo en la historia de la Tierra.
Objetivo del estudio:
- Investigar el papel del rápido aumento de la temperatura durante el Triásico Temprano en la extinción masiva de finales del Pérmico.
- Para entender el impacto de estas altas temperaturas en los ecosistemas ecuatoriales y la recuperación del ecosistema.
Principales métodos:
- Análisis de los registros fósiles del Triásico Temprano.
- Reconstrucción del paleoclima para determinar las fluctuaciones de temperatura.
- Análisis ecológico de taxones marinos y terrestres.
Principales resultados:
- La extinción masiva de finales del Pérmico coincidió con un fuerte aumento de las temperaturas globales.
- Las latitudes ecuatoriales experimentaron temperaturas hostiles a la vida, lo que llevó a la pérdida de algas calcáreas y peces.
- La recuperación del ecosistema fue suprimida, con un dominio de pequeños taxones de invertebrados durante los máximos térmicos.
Conclusiones:
- El rápido y extremo aumento de la temperatura en el Triásico Temprano fue uno de los principales impulsores de la extinción masiva de finales del Pérmico.
- Las altas temperaturas obligaron a las plantas y animales terrestres de las regiones ecuatoriales.
- Estos eventos térmicos interrumpieron significativamente y suprimieron la recuperación del ecosistema.
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