Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed (Pantanal wetlands, Brazil)

Michael M. McGlue; Aguinaldo Silva; Hiran Zani; Fabrício A. Corradini; Mauro Parolin; Erin J. Abel; Andrew S. Cohen; Mario L. Assine; Geoffrey S. Ellis; Mark A. Trees; Sidney Kuerten; Frederico dos Santos Gradella; Giliane Gessica Rasbold

doi:10.1016/j.yqres.2012.05.015

Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed (Pantanal wetlands, Brazil)

Michael M. McGlue, Aguinaldo Silva, Hiran Zani, Fabrício A. Corradini, Mauro Parolin, Erin J. Abel, Andrew S. Cohen, Mario L. Assine, Geoffrey S. Ellis, Mark A. Trees, Sidney Kuerten, Frederico dos Santos Gradella, Giliane Gessica Rasbold

Continental Scientific Drilling Facility

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The Pantanal is the world's largest tropical wetland and a biodiversity hotspot, yet its response to Quaternary environmental change is unclear. To address this problem, sediment cores from shallow lakes connected to the Upper Paraguay River (PR) were analyzed and radiocarbon dated to track changes in sedimentary environments. Stratal relations, detrital particle size, multiple biogeochemical indicators, and sponge spicules suggest fluctuating lake-level lowstand conditions between ~11,000 and 5300. cal. yr BP, punctuated by sporadic and in some cases erosive flood flows. A hiatus has been recorded from ~5300 to 2600. cal. yr BP, spurred by confinement of the PR within its channel during an episode of profound regional drought. Sustained PR flooding caused a transgression after ~2600. cal. yr BP, with lake-level highstand conditions appearing during the Little Ice Age. Holocene PR flood pulse dynamics are best explained by variability in effective precipitation, likely driven by insolation and tropical sea-surface temperature gradients. Our results provide novel support for hypotheses on: (1) stratigraphic discontinuity of floodplain sedimentary archives; (2) late Holocene methane flux from Southern Hemisphere wetlands; and (3) pre-colonial indigenous ceramics traditions in western Brazil.

Original language	English (US)
Pages (from-to)	285-294
Number of pages	10
Journal	Quaternary Research (United States)
Volume	78
Issue number	2
DOIs	https://doi.org/10.1016/j.yqres.2012.05.015
State	Published - Sep 2012

Bibliographical note

Funding Information:
IBAMA, ECOA, EMBRAPA, UFMS, Fazenda Santa Teresa, the citizens of Amolar, K. Wendt, B. Lima de Paula, D. Calheiros, the LRC, and UA AMS deserve special thanks for supporting our research. We acknowledge the American Chemical Society (PRF grant 45910-AC8 ), the São Paulo Research Foundation (FAPESP grant 2007/55987-3 ) and ExxonMobil for funding. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

Keywords

Flood pulse
Floodplain lakes
Paleolimnology
Pantanal wetlands
Upper Paraguay River

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UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.yqres.2012.05.015

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McGlue, M. M., Silva, A., Zani, H., Corradini, F. A., Parolin, M., Abel, E. J., Cohen, A. S., Assine, M. L., Ellis, G. S., Trees, M. A., Kuerten, S., Gradella, F. D. S., & Rasbold, G. G. (2012). Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed (Pantanal wetlands, Brazil). Quaternary Research (United States), 78(2), 285-294. https://doi.org/10.1016/j.yqres.2012.05.015

McGlue, MM, Silva, A, Zani, H, Corradini, FA, Parolin, M, Abel, EJ, Cohen, AS, Assine, ML, Ellis, GS, Trees, MA, Kuerten, S, Gradella, FDS & Rasbold, GG 2012, 'Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed (Pantanal wetlands, Brazil)', Quaternary Research (United States), vol. 78, no. 2, pp. 285-294. https://doi.org/10.1016/j.yqres.2012.05.015

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abstract = "The Pantanal is the world's largest tropical wetland and a biodiversity hotspot, yet its response to Quaternary environmental change is unclear. To address this problem, sediment cores from shallow lakes connected to the Upper Paraguay River (PR) were analyzed and radiocarbon dated to track changes in sedimentary environments. Stratal relations, detrital particle size, multiple biogeochemical indicators, and sponge spicules suggest fluctuating lake-level lowstand conditions between ~11,000 and 5300. cal. yr BP, punctuated by sporadic and in some cases erosive flood flows. A hiatus has been recorded from ~5300 to 2600. cal. yr BP, spurred by confinement of the PR within its channel during an episode of profound regional drought. Sustained PR flooding caused a transgression after ~2600. cal. yr BP, with lake-level highstand conditions appearing during the Little Ice Age. Holocene PR flood pulse dynamics are best explained by variability in effective precipitation, likely driven by insolation and tropical sea-surface temperature gradients. Our results provide novel support for hypotheses on: (1) stratigraphic discontinuity of floodplain sedimentary archives; (2) late Holocene methane flux from Southern Hemisphere wetlands; and (3) pre-colonial indigenous ceramics traditions in western Brazil.",

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author = "McGlue, {Michael M.} and Aguinaldo Silva and Hiran Zani and Corradini, {Fabr{\'i}cio A.} and Mauro Parolin and Abel, {Erin J.} and Cohen, {Andrew S.} and Assine, {Mario L.} and Ellis, {Geoffrey S.} and Trees, {Mark A.} and Sidney Kuerten and Gradella, {Frederico dos Santos} and Rasbold, {Giliane Gessica}",

note = "Funding Information: IBAMA, ECOA, EMBRAPA, UFMS, Fazenda Santa Teresa, the citizens of Amolar, K. Wendt, B. Lima de Paula, D. Calheiros, the LRC, and UA AMS deserve special thanks for supporting our research. We acknowledge the American Chemical Society (PRF grant 45910-AC8 ), the S{\~a}o Paulo Research Foundation (FAPESP grant 2007/55987-3 ) and ExxonMobil for funding. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

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AU - Gradella, Frederico dos Santos

AU - Rasbold, Giliane Gessica

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N2 - The Pantanal is the world's largest tropical wetland and a biodiversity hotspot, yet its response to Quaternary environmental change is unclear. To address this problem, sediment cores from shallow lakes connected to the Upper Paraguay River (PR) were analyzed and radiocarbon dated to track changes in sedimentary environments. Stratal relations, detrital particle size, multiple biogeochemical indicators, and sponge spicules suggest fluctuating lake-level lowstand conditions between ~11,000 and 5300. cal. yr BP, punctuated by sporadic and in some cases erosive flood flows. A hiatus has been recorded from ~5300 to 2600. cal. yr BP, spurred by confinement of the PR within its channel during an episode of profound regional drought. Sustained PR flooding caused a transgression after ~2600. cal. yr BP, with lake-level highstand conditions appearing during the Little Ice Age. Holocene PR flood pulse dynamics are best explained by variability in effective precipitation, likely driven by insolation and tropical sea-surface temperature gradients. Our results provide novel support for hypotheses on: (1) stratigraphic discontinuity of floodplain sedimentary archives; (2) late Holocene methane flux from Southern Hemisphere wetlands; and (3) pre-colonial indigenous ceramics traditions in western Brazil.

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Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed (Pantanal wetlands, Brazil)

Abstract

Bibliographical note

Keywords

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UN SDGs

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