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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Andean Tectonics and Mantle Dynamics as a Pervasive Influence on Amazonian Ecosystem

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Bicudo, Tacio Cordeiro [1] ; Sacek, Victor [1] ; de Almeida, Renato Paes [2] ; Bates, John M. [3] ; Ribas, Camila Cherem [4]
Total Authors: 5
[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Geociencias, Sao Paulo - Brazil
[3] Field Museum, Dept Zool, Chicago, IL - USA
[4] Inst Nacl de Pesquisas da Amazonia, Manaus, Amazonas - Brazil
Total Affiliations: 4
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 9, NOV 14 2019.
Web of Science Citations: 0

The Amazonian landscape evolution is the result of the combined effect of Andean tectonism, climate and the Earth's interior dynamics. To reconstruct the landscape evolution and its influence on paleoenvironmental variations within Amazonia since the Oligocene, we conducted numerical experiments that incorporate different surface and geodynamic processes, reproducing many paleogeographic features as inferred from the sedimentary record. We show that the evolution of the drainage pattern gradually reduced the area of sedimentation derived from the Guiana and Brazilian shields while expanded the Andean derived deposits during the Miocene, affecting the nutrient availability. First order biotic habitats were inferred from these paleogeographical reconstructions, showing an eastward expansion of varzea and terra firme forests and consequent retraction of igapo forests, with a millennial-scale reconfiguration of a mosaic of habitats in the lowlands. We conclude that this dynamism probably guided the observed patterns of speciation in the most biodiverse biome on Earth. (AU)

FAPESP's process: 17/24870-5 - Evolution of the Amazon drainage basin: Andean uplift, climate and other geodynamic processes
Grantee:Victor Sacek
Support Opportunities: Regular Research Grants
FAPESP's process: 17/00461-9 - Development of screen-printed electrodes modified by Prussian blue and analogues for integrated analytical devices
Grantee:Juliano Alves Bonacin
Support Opportunities: Scholarships abroad - Research