Dinámicas de diversidad del grupo decápoda en el neotrópico durante los últimos 135 millones de años

Abstract

This study evaluates statistically the relation between the dynamics associated to diversity for decapods during the las 135 Ma. Analyzing their relationship with global patterns and their geological context. Our results indicate a strong correlation between the extinction and origination rates, with a maximum during the climate period known as “Green House” (100 – 37.5 Ma), which indicates an increase in the effects from biotic factors such as interspecies competition. Furthermore, we observed extinction events overlapping with global climatic events (OAEs), which in turn indicates a control from abiotic factors in these dynamics. Moreover, we observe a relation between intervals of reef development during the Cretaceous and origination events during the same periods. These patterns can be interpreted as a result of the complicated logistic growth model, in which both biotic and abiotic factor play a fundamental role in evolutionary process across time.