Patterns and drivers of evapotranspiration in South American wetlands

Ayan Santos Fleischmann (), Leonardo Laipelt, Fabrice Papa, Rodrigo Cauduro Dias de Paiva, Bruno Comini Andrade, Walter Collischonn, Marcelo Sacardi Biudes, Rafael Kayser, Catherine Prigent, Eric Cosio, Nadja Gomes Machado and Anderson Ruhoff
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Ayan Santos Fleischmann: Instituto de Desenvolvimento Sustentável Mamirauá
Leonardo Laipelt: Universidade Federal do Rio Grande do Sul (UFRGS)
Fabrice Papa: Université de Toulouse, LEGOS (IRD, CNRS, CNES, UPS)
Rodrigo Cauduro Dias de Paiva: Universidade Federal do Rio Grande do Sul (UFRGS)
Bruno Comini Andrade: Universidade Federal do Rio Grande do Sul (UFRGS)
Walter Collischonn: Universidade Federal do Rio Grande do Sul (UFRGS)
Marcelo Sacardi Biudes: Universidade Federal de Mato Grosso (UFMT)
Rafael Kayser: Universidade Federal do Rio Grande do Sul (UFRGS)
Catherine Prigent: LERMA, CNRS, Observatoire de Paris
Eric Cosio: Instituto para la Naturaleza, Tierra y Energía (INTE), Pontificia Universidad Católica del Perú
Nadja Gomes Machado: Instituto Federal de Mato Grosso (IFMT)
Anderson Ruhoff: Universidade Federal do Rio Grande do Sul (UFRGS)

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Evapotranspiration (ET) is a key process linking surface and atmospheric energy budgets, yet its drivers and patterns across wetlandscapes are poorly understood worldwide. Here we assess the ET dynamics in 12 wetland complexes across South America, revealing major differences under temperate, tropical, and equatorial climates. While net radiation is a dominant driver of ET seasonality in most environments, flooding also contributes strongly to ET in tropical and equatorial wetlands, especially in meeting the evaporative demand. Moreover, significant water losses through wetlands and ET differences between wetlands and uplands occur in temperate, more water-limited environments and in highly flooded areas such as the Pantanal, where slow river flood propagation drives the ET dynamics. Finally, floodplain forests produce the greatest ET in all environments except the Amazon River floodplains, where upland forests sustain high rates year round. Our findings highlight the unique hydrological functioning and ecosystem services provided by wetlands on a continental scale.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42467-0

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DOI: 10.1038/s41467-023-42467-0

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