Acosta Castellanos, S., Quiroz-García, D., Arreguín-Sánchez, M. y Fernández-Nava, R. 2011. A palynological analysis was performed on the sedimentary cover of Laguna Cea, located in the subbasin of the Simpson River in the Coyhaique region of southern Chile. The pollen record shows a landscape evolution from a woodland-type ecosystem covered by. POLIBOTÁNICA. 32 (ago. 2011), 179-191.