Análisis de foraminíferos bentónicos de la fosa oceánica para Inferencias paleoambientales y paleoecológicas para estudio del cambio climático, recolectadas de la campaña oceanográfica - SUPERMOUV

Abstract

Abstract: This study examines the taxonomic and ecological characteristics of benthic foraminifers collected during the SUPERMOUV oceanographic campaign on the convergent margin between Ecuador and Colombia, with the aim of reconstructing the paleoenvironmental conditions and their connection with climate change. Through the study of 12 sediment samples, using diversity indicators such as Fisher-α and the TROX model, it revealed considerable fluctuations in the availability of oxygen and nutrients in the background over time. The findings indicated the presence of native microfauna with reworked species from previous eras, which indicates high tectonic activity and active sedimentation processes in the area. The preponderance of genera such as Uvigerina and Bolivina layers implies a significant flow of organic matter and hypoxic conditions, but the existence of various associations at other levels shows greater environmental stability. This study shows that benthic foraminifers are reliable biological markers to understand how deep-sea ecosystems have reacted to past climate changes, offering an important basis for projecting future oceanic scenarios in the face of global warming.