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Paleohydrological changes, chronology of events and sediment dynamics in the quaternary of the Pantanal Wetland

Abstract

Late Pleistocene to Holocene paleo-hydrologic changes are recorded in the landscape and sedimentary record of the Pantanal wetlands, central-west Brazil. Environmental changes are mainly controlled by climatic events that took place since the aridity during the Last Glacial Maximum to more humid conditions prevailing during the Holocene and by structural factors related to the tectonic regime that operates in the sedimentary basin. Although allogenic factors related to climate and neotectonics strongly control the morphological evolution and landforms, many changes in the physical properties of sediments and sites of deposition have resulted from autogenic fluvial processes, particularly those related to avulsive river systems. In many important rivers of Pantanal fluvial plain, modern shifts in the fluvial channels have been causing great consternation of the local population. In this context, the main objectives of this project are the recognition of paleodrainage patterns, the reconstruction of Quaternary geologic and climatic events, the understanding of the hydro-sedimentary dynamics and evidences of paleohydrological changes and the establishment of relationships between allogenic and autogenic factors in the depositional setting. Many methods and techniques will be used to achieve these objectives, such as interpretation of orbital data (sattelite images and SRTM), data bank organized and processed with GIS, subsurface investigation using ground penetrating radar (GPR), surface and subsurface sampling (vibrocoring and percussion devices), facies analysis in outcrops and cores, granulometric analysis, absolute dating using Carbon-14 and optically stimulated luminescence methods, analysis of proxy data (sponge spicules , phytoliths and palynomorfs), paleopedology investigation in river terraces, hydro-sedimentary surveys with acoustic Doppler current profiler (ADCP). The available information will be integrated in order to understand the role of alogenic and autogenic factors, to define the chronology of landforms and its sedimentary deposits, and to establish the succession of geologic events that occurred in the Pantanal since the late Pleistocene. (AU)

Articles published in Pesquisa FAPESP Magazine about the research grant:
The Pantanal pleads for rain 
El Pantanal pide agua 
Los paisajes ocultos del Pantanal 
Hidden landscapes in the Pantanal 
Entre el agua y la tierra 
Lagunas modeladas por el tiempo 
Between water and land 
Articles published in other media outlets (5 total):
More itemsLess items
Planeta online: O Pantanal pede água (12/Nov/2020)
Press From Brasil (EUA): O Pantanal pede água (12/Nov/2020)
Brasil Amazônia Agora: O Pantanal pede água » Brasil Amazônia Agora (09/Nov/2020)
Biólogo: A nova realidade do Pantanal (06/Nov/2020)
Brazilian Report: The amazing hidden landscapes of Brazil's Pantanal (04/Jan/2020)

Scientific publications (16)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
LOUZADA, ROMULLO O.; BERGIER, IVAN; ASSINE, MARIO L. Landscape changes in avulsive river systems: Case study of Taquari River on Brazilian Pantanal wetlands. Science of The Total Environment, v. 723, JUN 25 2020. Web of Science Citations: 0.
STEVAUX, JOSE CANDIDO; MACEDO, HUDSON DE AZEVEDO; ASSINE, MARIO LUIS; SILVA, AGUINALDO. Changing fluvial styles and backwater flooding along the Upper Paraguay River plains in the Brazilian Pantanal wetland. Geomorphology, v. 350, FEB 1 2020. Web of Science Citations: 1.
MERINO, EDER RENATO; ASSINE, MARIO LUIS. Hidden in plain sight: How finding a lake in the Brazilian Pantanal improves understanding of wetland hydrogeomorphology. EARTH SURFACE PROCESSES AND LANDFORMS, v. 45, n. 2 DEC 2019. Web of Science Citations: 0.
LO, EDWARD L.; MCGLUE, MICHAEL M.; SILVA, AGUINALDO; BERGIER, IVAN; YEAGER, KEVIN M.; MACEDO, HUDSON DE AZEVEDO; SWALLOM, MEREDITH; ASSINE, MARIO L. Fluvio-lacustrine sedimentary processes and landforms on the distal Paraguay fluvial megafan (Brazil). Geomorphology, v. 342, p. 163-175, OCT 1 2019. Web of Science Citations: 1.
OLIVEIRA, STEFANIA C.; PUPIM, FABIANO N.; STEVAUXO, JOSE C.; ASSINE, MARIO L. Luminescence Chronology of Terrace Development in the Upper Parana River, Southeast Brazil. Frontiers in Earth Science, v. 7, AUG 6 2019. Web of Science Citations: 0.
MACEDO, HUDSON DE AZEVEDO; STEVAUX, JOSE CANDIDO; SILVA, AGUINALDO; MERINO, EDER RENATO; LO, EDWARD LIMIN; ASSINE, MARIO LUIS. HYDROSEDIMENTOLOGY OF THE PARAGUAY RIVER IN THE CORUMBA FLUVIAL REACH, PANTANAL WETLAND. REVISTA BRASILEIRA DE GEOMORFOLOGIA, v. 20, n. 2, p. 255-271, APR-JUN 2019. Web of Science Citations: 0.
GUERREIRO, RENATO L.; BERGIER, IVAN; MCGLUE, MICHAEL M.; WARREN, LUCAS V.; PINTO DE ABREU, URBANO GOMES; ABRAHAO, JONATAS; ASSINE, MARIO L. The soda lakes of Nhecolandia: A conservation opportunity for the Pantanal wetlands. PERSPECTIVES IN ECOLOGY AND CONSERVATION, v. 17, n. 1, p. 9-18, JAN-MAR 2019. Web of Science Citations: 2.
GUERREIRO, RENATO LADA; MCGLUE, MICHAEL M.; STONE, JEFFERY R.; BERGIER, IVAN; PAROLIN, MAURO; DA SILVA CAMINHA, SILANE A. F.; WARREN, LUCAS V.; ASSINE, MARIO L. Paleoecology explains Holocene chemical changes in lakes of the Nhecolandia (Pantanal-Brazil). Hydrobiologia, v. 815, n. 1, p. 1-19, JUN 2018. Web of Science Citations: 4.
BERGIER, IVAN; ASSINE, MARIO L.; MCGLUE, MICHAEL M.; ALHO, CLEBER J. R.; SILVA, AGUINALDO; GUERREIRO, RENATO L.; CARVALHO, JOAO C. Amazon rainforest modulation of water security in the Pantanal wetland. Science of The Total Environment, v. 619, p. 1116-1125, APR 1 2018. Web of Science Citations: 12.
BECKER, B. F.; DA SILVA-CAMINHA, S. A. F.; GUERREIRO, R. L.; DE OLIVEIRA, E. J.; D'APOLITO, C.; ASSINE, M. L. Late Holocene palynology of a saline lake in the Pantanal of Nhecolandia, Brazil. PALYNOLOGY, v. 42, n. 4, p. 457-465, 2018. Web of Science Citations: 1.
MCGLUE, MICHAEL M.; GUERREIRO, RENATO LADA; BERGIER, IVAN; SILVA, AGUINALDO; PUPIM, FABIANO N.; OBERC, VICTORIA; ASSINE, MARIO L. Holocene stratigraphic evolution of saline lakes in Nhecolandia, southern Pantanal wetlands (Brazil). Quaternary Research, v. 88, n. 3, p. 472-490, NOV 2017. Web of Science Citations: 6.
MACEDO, HUDSON DE AZEVEDO; STEVAUX, JOSE CANDIDO; ASSINE, MARIO LUIS; SILVA, AGUINALDO; PUPIM, FABIANO DO NASCIMENTO; MERINO, EDER RENATO; LO, EDWARD. CALCULATING BEDLOAD TRANSPORT IN RIVERS: CONCEPTS, CALCULUS ROUTINES AND APPLICATION. REVISTA BRASILEIRA DE GEOMORFOLOGIA, v. 18, n. 4, p. 813-824, OCT-DEC 2017. Web of Science Citations: 3.
PUPIM, FABIANO DO NASCIMENTO; ASSINE, MARIO LUIS; SAWAKUCHI, ANDRE OLIVEIRA. Late Quaternary Cuiaba megafan, Brazilian Pantanal: Channel patterns and paleoenvironmental changes. QUATERNARY INTERNATIONAL, v. 438, n. A, p. 108-125, MAY 5 2017. Web of Science Citations: 7.
ANDRÉ OLIVEIRA SAWAKUCHI; VINICIUS RIBAU MENDES; FABIANO DO NASCIMENTO PUPIM; THAYS DESIREE MINELI; LIGIA MARIA ALMEIDA LEITE RIBEIRO; ANDRE ZULAR; CARLOS CONFORTI FERREIRA GUEDES; PAULO CÉSAR FONSECA GIANNINI; LUCIANA NOGUEIRA; WILLIAM SALLUN FILHO; MARIO LUIS ASSINE. Optically stimulated luminescence and isothermal thermoluminescence dating of high sensitivity and well bleached quartz from Brazilian sediments: from Late Holocene to beyond the Quaternary?. BRAZILIAN JOURNAL OF GEOLOGY, v. 46, p. 209-226, Jun. 2016.
ASSINE, MARIO LUIS; MERINO, EDER RENATO; PUPIM, FABIANO DO NASCIMENTO; MACEDO, HUDSON DE AZEVEDO; MARTINHO DOS SANTOS, MAURICIO GUERREIRO. The Quaternary alluvial systems tract of the Pantanal Basin, Brazil. BRAZILIAN JOURNAL OF GEOLOGY, v. 45, n. 3, p. 475-489, SEP 2015. Web of Science Citations: 16.
PUPIM, FABIANO DO NASCIMENTO; BIERMAN, PAUL R.; ASSINE, MARIO LUIS; ROOD, DYLAN H.; SILVA, AGUINALDO; MERINO, EDER RENATO. Erosion rates and landscape evolution of the lowlands of the Upper Paraguay river basin (Brazil) from cosmogenic Be-10. Geomorphology, v. 234, p. 151-160, APR 1 2015. Web of Science Citations: 9.

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