Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications

Abstract The South American Monsoon System is responsible for the majority of precipitation in the continent, especially over the Amazon and the tropical savannah, known as ‘Cerrado’. Compared to the extensively studied subtropical and temperate regions the effect of the Medieval Climate Anomaly (MC...

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Autores principales:	Vitor Azevedo, Nicolás M. Stríkis, Rudney A. Santos, Jonas Gregorio de Souza, Angela Ampuero, Francisco W. Cruz, Paulo de Oliveira, José Iriarte, Cintia F. Stumpf, Mathias Vuille, Vinícius R. Mendes, Hai Cheng, R. Lawrence Edwards
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d7e7498eea1740aba5f6a7ec91b23c70
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spelling	oai:doaj.org-article:d7e7498eea1740aba5f6a7ec91b23c702021-12-02T15:12:47ZMedieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications10.1038/s41598-019-56852-72045-2322https://doaj.org/article/d7e7498eea1740aba5f6a7ec91b23c702019-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-56852-7https://doaj.org/toc/2045-2322Abstract The South American Monsoon System is responsible for the majority of precipitation in the continent, especially over the Amazon and the tropical savannah, known as ‘Cerrado’. Compared to the extensively studied subtropical and temperate regions the effect of the Medieval Climate Anomaly (MCA) on the precipitation over the tropics is still poorly understood. Here, we present a multiproxy paleoprecipitation reconstruction showing a consistent change in the hydrologic regime during the MCA in the eastern Amazon and ‘Cerrado’, characterized by a substantial transition from humid to drier conditions during the Early (925-1150 C.E.) to Late-MCA (1150-1350 C.E.). We compare the timing of major changes in the monsoon precipitation with the expansion and abandonment of settlements reported in the archeological record. Our results show that important cultural successions in the pre-Columbian Central Amazon, the transition from Paredão to Guarita phase, are in agreement with major changes in the hydrologic regime. Phases of expansion and, subsequent abandonment, of large settlements from Paredão during the Early to Late-MCA are coherent with a reduction in water supply. In this context we argue that the sustained drier conditions during the latter period may have triggered territorial disputes with Guarita leading to the Paredão demise.Vitor AzevedoNicolás M. StríkisRudney A. SantosJonas Gregorio de SouzaAngela AmpueroFrancisco W. CruzPaulo de OliveiraJosé IriarteCintia F. StumpfMathias VuilleVinícius R. MendesHai ChengR. Lawrence EdwardsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vitor Azevedo Nicolás M. Stríkis Rudney A. Santos Jonas Gregorio de Souza Angela Ampuero Francisco W. Cruz Paulo de Oliveira José Iriarte Cintia F. Stumpf Mathias Vuille Vinícius R. Mendes Hai Cheng R. Lawrence Edwards Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
description	Abstract The South American Monsoon System is responsible for the majority of precipitation in the continent, especially over the Amazon and the tropical savannah, known as ‘Cerrado’. Compared to the extensively studied subtropical and temperate regions the effect of the Medieval Climate Anomaly (MCA) on the precipitation over the tropics is still poorly understood. Here, we present a multiproxy paleoprecipitation reconstruction showing a consistent change in the hydrologic regime during the MCA in the eastern Amazon and ‘Cerrado’, characterized by a substantial transition from humid to drier conditions during the Early (925-1150 C.E.) to Late-MCA (1150-1350 C.E.). We compare the timing of major changes in the monsoon precipitation with the expansion and abandonment of settlements reported in the archeological record. Our results show that important cultural successions in the pre-Columbian Central Amazon, the transition from Paredão to Guarita phase, are in agreement with major changes in the hydrologic regime. Phases of expansion and, subsequent abandonment, of large settlements from Paredão during the Early to Late-MCA are coherent with a reduction in water supply. In this context we argue that the sustained drier conditions during the latter period may have triggered territorial disputes with Guarita leading to the Paredão demise.
format	article
author	Vitor Azevedo Nicolás M. Stríkis Rudney A. Santos Jonas Gregorio de Souza Angela Ampuero Francisco W. Cruz Paulo de Oliveira José Iriarte Cintia F. Stumpf Mathias Vuille Vinícius R. Mendes Hai Cheng R. Lawrence Edwards
author_facet	Vitor Azevedo Nicolás M. Stríkis Rudney A. Santos Jonas Gregorio de Souza Angela Ampuero Francisco W. Cruz Paulo de Oliveira José Iriarte Cintia F. Stumpf Mathias Vuille Vinícius R. Mendes Hai Cheng R. Lawrence Edwards
author_sort	Vitor Azevedo
title	Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
title_short	Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
title_full	Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
title_fullStr	Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
title_full_unstemmed	Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications
title_sort	medieval climate variability in the eastern amazon-cerrado regions and its archeological implications
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/d7e7498eea1740aba5f6a7ec91b23c70
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Medieval Climate Variability in the eastern Amazon-Cerrado regions and its archeological implications

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