Evidence map›Paper›PMID 40538634›Full record

ArticleCommunications earth & environment2025

Tree ring isotopes reveal an intensification of the hydrological cycle in the Amazon.

Bruno B L Cintra, Emanuel Gloor, Jessica C A Baker, Arnoud Boom, Jochen Schöngart, Santiago Clerici, Kanhu Pattnayak, Roel J W Brienen

Abstract read
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In one paragraph

Article in Communications earth & environment, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Bruno B L Cintra *School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK.ORCID 0000-0002-5116-2654
Emanuel Gloor *School of Geography, University of Leeds, Leeds, UK.ORCID 0000-0002-9384-6341
Jessica C A Baker *School of Earth and Environment, University of Leeds, Leeds, UK.ORCID 0000-0002-3720-4758
Arnoud BoomSchool of Geography, Geology and the Environment, University of Leicester, Leicester, UK.ORCID 0000-0003-1299-691X
Jochen SchöngartEcology, Monitoring and Sustainable Use of Wetlands (MAUA), National Institute for Amazon Research, Manaus, Brazil.ORCID 0000-0002-7696-9657
Santiago ClericiSchool of Geography, University of Leeds, Leeds, UK.ORCID 0000-0002-8618-1804
Kanhu PattnayakHadley Centre for Climate, Met Office, Exeter, UK.ORCID 0000-0001-9589-8789
Roel J W Brienen *School of Geography, University of Leeds, Leeds, UK.ORCID 0000-0002-5397-5755

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Over recent decades the Amazon region has been exposed to large-scale land-use changes and global warming. How these changes affect Amazonia's hydrological cycle remains unclear as meteorological data are scarce. We use tree ring oxygen isotope records to confirm that the Amazon hydrological cycle has intensified since 1980. Diverging isotopic trends from terra firme and floodplain trees from distinct sites (approximately 1000 km apart) in Western Amazon indicate rainfall amounts increased during the wet season and decreased during the dry season at large-scale. Using the Rayleigh distillation model, we estimate that wet season rainfall increased by 15-22%, and dry season rainfall decreased by 8-13%. These diverging trends provide evidence, independent from existing climate records, that the seasonality of the hydrological cycle in the Amazon is increasing. Continuation of the observed trends will have a pervasive impact on Amazon forests and floodplain ecosystems, and strongly affect the livelihoods of the regional riverine communities.

Indexed as

Atmospheric dynamicsClimate changeForest ecologyPlant physiologyStable isotope analysis

Identifiers

PMID40538634
PMCPMC12173935

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.