This wetland has undergone alterations due to soil drains, pipelines and landfills by road extensions have divided it into three parts in order to enable new land for social housing. On one of its edges is the only private natural reserve in the urban area, which seeks to promote its conservation (Parque Urbano El Bosque). The proximity of the wetland to housing, together with its extension and specific morphology, creates a particular soundscape where neighborhood sounds coexist with those of a natural ecosystem.
This wetland is located in the southern part of Valdivia and was created as direct result the 1960 earthquake when the lowlands of the city were flooded by the surrounding estuarine system. Since then, the wetland has undergone important changes in its morphology mainly due to the development of the local metal-mechanic industry, new road works that connect the area with Valdivia’s city center and landfills for new housing developments.
This wetland is part of the Carlos Anwandter Nature Sanctuary, a wetland of expanding for more than 6,000 hectares of which 4,877 are protected, being one of 13 RAMSAR sites in Chile. The section of the wetland where 24-hour field recordings were carried is located on the Arboretum, a 60 hectares natural belonging to Universidad Austral de Chile. This ecosystem provides a distinctive sonic landscape with very low human intervention.