Tese

Antropoceno na Amazônia: holoceno em curso ou prelúdio de uma nova época geológica do homem?

The Natural Domains of the Brazilian Amazon present a high biogeographic diversity, favored by the complex geological substratum and equatorial climate, both predominant in the Amazonian landscape, located in the northern portion of Brazil, covering an area equivalent to 40% of the national te...

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Autor principal: PONTE, Franciney Carvalho da
Grau: Tese
Idioma: por
Publicado em: Universidade Federal do Pará 2023
Assuntos:
Acesso em linha: http://repositorio.ufpa.br:8080/jspui/handle/2011/15390
Resumo:
The Natural Domains of the Brazilian Amazon present a high biogeographic diversity, favored by the complex geological substratum and equatorial climate, both predominant in the Amazonian landscape, located in the northern portion of Brazil, covering an area equivalent to 40% of the national territory (~3.7 million Km2). Human expansion in the Amazon has produced a series of transformations in its natural resources. In this sense, this work aimed to perform a retrospective on the trajectory of human beings in the Amazonian domains, through the spatialization of anthropogenic evidences and analysis of anthropogenic indicators, likely to be associated with precepts of the Anthropocene, made possible by a geographical perspective. The analysis raised the aspects of both morphoclimatic and phytogeographic domains, highlighting their dominant landscapes and natural systems, through biophysical compartmentalization, working as a substrate in the analysis of the dynamics of socio-spatial events and the materialized evidences of human action in the landscapes, under a broad temporal spectrum - the Holocene. The research was based on a holistic and integrative approach of variables, related to both natural and socio-spatial aspects, from a systemic vision, aimed at sizing and measuring the patterns of use of natural resources, the anthropogenization degree of natural domains and the proposition of anthropogenic landscapes/structures. In this sense, the research revealed that these domains currently present a very significant anthropogenic percentage of approximately 70%, the result of a broad and diverse socio-spatial dynamic, which attributed to the region a marked variability of human macrosystems and semi-natural landscapes embedded in apparently natural ecosystems. However, it was detected that this estimate is probably underestimated, if we consider the evidence, according to a cumulative perspective, reaching a value around 150%, that is, 50% above the total area of the study, which denounces a high anthropogenic pressure in the region. Given the above, and considering the Anthropocene precepts, centered on the anthropogenic conception, it is suggested that the Amazon region contains anthropogenic landscapes, substantially altered, for at least four thousand years AP, when much of its domains were already occupied and significantly used and managed by human groups.