The main objective of the present Atlas is to register and to show by means of a graphic document, the characteristics of the agents of the landscape that compose the the city of Penco (Mapudungun: "See (Pen) Water (Ko) ecosystems (rivers, lagoons and parks), their state of conservation and the effects of fragmentation that generate the diverse dynamics of transformation of the territory. The cartographies and records are based on the results of the URBANCOST project and investigations carried out by the researcher Carolina Rojas and the team of the Centro de Desarrollo Urbano Sustentable (CEDEUS) as well as several studies carried out by the Center for Environmental Sciences (EULA)