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Video Experimental Relacionado

Updated: Jul 11, 2026

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Published on: April 17, 2015

Los bosques amazónicos se volvieron verdes durante la sequía de 2005.

Scott R Saleska1, Kamel Didan, Alfredo R Huete

  • 1Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA. saleska@email.arizona.edu

Science (New York, N.Y.)
|September 22, 2007
PubMed
Resumen

Los bosques amazónicos pueden ser más resistentes al cambio climático de lo que sugieren los modelos. Los datos satelitales revelaron un verde fotosintético durante una sequía de 2005, contrariamente a las predicciones del modelo del ciclo del clima y el carbono.

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Área de la Ciencia:

  • Ciencias del clima Ciencias del clima Ciencias del clima
  • Ecología Ecología Ecología.
  • La teledetección es la sensorización remota.

Sus antecedentes:

  • Los modelos acoplados del ciclo climático-carbono indican que los bosques amazónicos son susceptibles a la sequía.
  • Investigaciones anteriores sugieren vulnerabilidad a sequías tanto a corto como a largo plazo.

Objetivo del estudio:

  • Para investigar la respuesta de la selva amazónica a la sequía utilizando observaciones satelitales.
  • Para comparar el comportamiento observado del bosque con las predicciones del modelo.

Principales métodos:

  • Análisis de datos satelitales para evaluar la actividad fotosintética en los bosques amazónicos.
  • Comparación de la ecologización observada durante una sequía de 2005 con simulaciones de modelos.

Principales resultados:

  • Las observaciones por satélite mostraron una ecologización fotosintética a gran escala en los bosques de hoja perenne intactos del Amazonas durante una sequía de 2005.
  • Este verde observado contrasta con las predicciones del modelo de vulnerabilidad a la sequía.

Conclusiones:

  • Los bosques amazónicos pueden exhibir una mayor resistencia a las sequías inducidas por el cambio climático de lo que los modelos de ecosistemas suponen actualmente.
  • A pesar de las amenazas de la deforestación y los incendios, los bosques intactos muestran una capacidad de recuperación y fotosíntesis durante los eventos de sequía.