RESUMEN

Cores of coral reef frameworks along an upwelling gradient in Panamá show that reef ecosystems in the tropical eastern Pacific collapsed for 2500 years, representing as much as 40% of their history, beginning about 4000 years ago. The principal cause of this millennial-scale hiatus in reef growth was increased variability of the El Niño-Southern Oscillation (ENSO) and its coupling with the Intertropical Convergence Zone. The hiatus was a Pacific-wide phenomenon with an underlying climatology similar to probable scenarios for the next century. Global climate change is probably driving eastern Pacific reefs toward another regional collapse.

Asunto(s)

Antozoos , Arrecifes de Coral , El Niño Oscilación del Sur , Animales , Antozoos/crecimiento & desarrollo , Cambio Climático , Sedimentos Geológicos , Océano Pacífico , Panamá , Tiempo