El registro global de nanofósiles "fantasma" revela la resistencia del plancton al alto CO2 y al calentamiento
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Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.Los fósiles de nanoplancton marino sugieren que estos organismos son más resistentes a los eventos de calentamiento climático del pasado de lo que se pensaba anteriormente. Los nuevos registros fósiles "fantasma" revelan nanoplancton conservado, lo que desafía las interpretaciones de las crisis de biocalcificación del pasado.
Área De La Ciencia
- Paleontología
- Ciencias del clima
- Biología marina
Sus Antecedentes
- Los organismos marinos calcificados son indicadores cruciales de los impactos del cambio climático.
- Los eventos de calentamiento global pasados a menudo se interpretan como crisis de biocalcificación basadas en registros fósiles de nanoplancton.
- La disolución del carbonato de calcio (CaCO3) tiene un impacto significativo en la preservación de los microfósiles marinos.
Objetivo Del Estudio
- Reevaluar el impacto del calentamiento climático pasado en el nanoplancton marino.
- Investigar la fiabilidad de los registros de fósiles de nanoplancton durante los eventos de calentamiento.
- Evaluar la resistencia del nanoplancton a la acidificación y el calentamiento de los océanos.
Principales Métodos
- Análisis de un registro global de nanofósiles con huellas o "fantasmas".
- Examen de la preservación del nanoplancton durante los eventos de calentamiento del Jurásico y el Cretácico.
- Comparación de los datos fósiles de la impresión con los registros fósiles tradicionales basados en CaCO3.
Principales Resultados
- Se encontró nanoplancton exquisitamente conservado a lo largo de una crisis de biocalcificación jurásica inferida utilizando fósiles de huellas.
- Los eventos de calentamiento del Cretácico muestran registros fósiles fuertemente distorsionados por la disolución de CaCO3.
- El nanoplancton demostró una mayor resistencia a los eventos de calentamiento del pasado de lo que sugieren las pruebas fósiles tradicionales.
Conclusiones
- Los registros fósiles tradicionales de nanoplancton pueden exagerar el impacto de los eventos de calentamiento del pasado debido a la disolución.
- La resistencia del nanoplancton al cambio climático puede subestimarse.
- Se necesita más investigación para comprender completamente las respuestas del nanoplancton al cambio climático rápido y moderno.
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