This thesis aims to present an anthropological perspective on the environmental crisis in Baixada de Jacarepaguá, located in the city of Rio de Janeiro, throughout the 20th century. More specifically, this perspective seeks to understand the history of this crisis based on the intense transformation of water and land, inserting local anthropic actions in the global context of human actions that changed the relationship between human and non-human beings that shape the More –than- human - Anthropocene by the anthropologist Anna Tsing. Throughout the 20th century, mainly from the 1970s onwards, after the approval of architect Lúcio Costa s Pilot Plan, the countless and accelerated human actions to modernize the region, such as urban infrastructure works and the frequent launches of various real estate projects by agents of transformation – public authorities and entrepreneurs – initiated a local environmental crisis that was accentuated by the feral behavior of some species, such as the uncontrolled growth of gigogas and the bloom of cyanobacteria throughout the lagoon complex of the Baixada. Furthermore, while tilapia, an exotic species, contributed to the change in the ecology of the ichthyofauna, the broad-snouted caiman, a local species, became a reflection of these anthropic actions, when its body was deformed due to ingestion plastic and other inorganic products arising from human activities. The transformation of the landscape and the behavior of species led to changes in the lives of those people who depend on natural resources from the waters of the lagoon complex. In this way, the environmental crisis triggered by both the intense and accelerated transformation of the region and the feral behavior of some species in the Baixada can perhaps be understood as a local example, among many others around the world, that reveal the risks of the Anthropocene.