Evidence map›Paper›PMID 40769971›Full record

ArticleNature communications2025

Ocean freshening near the end of the Mesozoic.

Wiesława Radmacher, Igor Niezgodzki, Vicente Gilabert, Gregor Knorr, David M Buchs, José A Arz, Ignacio Arenillas, Martin A Pearce, Jarosław Tyszka, Mateusz Mikołajczak and 5 more

Abstract read
In one paragraph

Article in Nature communications, 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

15 authors.

Wiesława RadmacherING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Center in Kraków, Senacka 1, Poland. ndkrol@cyf-kr.edu.pl.ORCID http://orcid.org/0000-0001-7316-3693
Igor NiezgodzkiING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Center in Kraków, Senacka 1, Poland.ORCID http://orcid.org/0000-0002-6746-8332
Vicente GilabertDepartment of Geology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bilbao, Spain.
Gregor KnorrAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
David M BuchsSchool of Earth and Environmental Sciences, Cardiff University, Cardiff, UK.ORCID http://orcid.org/0000-0001-8866-8125
José A ArzDepartamento de Ciencias de la Tierra, and Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain.ORCID http://orcid.org/0000-0003-0063-8752
Ignacio ArenillasDepartamento de Ciencias de la Tierra, and Instituto Universitario de Investigación en Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Zaragoza, Spain.ORCID http://orcid.org/0000-0003-4632-533X
Martin A PearceDepartment of Earth Sciences, Natural History Museum, Cromwell Road, London, UK.
Jarosław TyszkaING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Center in Kraków, Senacka 1, Poland.
Mateusz MikołajczakING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Center in Kraków, Senacka 1, Poland.
Osmín J VásquezCarrera de Geología, Centro Universitario del Norte, Universidad de San Carlos de Guatemala, Cobán, Guatemala.ORCID http://orcid.org/0000-0003-2656-5299
Sarit Ashckenazi-PolivodaDead Sea and Arava Sciences Center, Masada National Park, Mount Masada, Israel.ORCID http://orcid.org/0000-0001-8082-8489
Sigal AbramovichBen-Gurion University of the Negev, Beer-Sheva, Israel.
Mariusz NiechwedowiczS.J. Thugutt Geological Museum, Faculty of Geology, University of Warsaw, Warsaw, Poland.ORCID http://orcid.org/0000-0002-1967-2945
Gunn MangerudDepartment of Earth Science, University of Bergen, Bergen, Norway.

Funding

National Geographic Society #GEFNE137-15
6 · The paper itself

Abstract

Paleogeographic changes have significantly shaped ocean circulation and climate dynamics throughout Earth's history. This study integrates geological proxies with climate simulations to assess how ocean gateway evolution influenced ocean salinity near the end of the Mesozoic (~66 Ma). Our modeling results demonstrate that 1) Central American Seaway shoaling reorganizes ocean currents, and 2) Arctic marine gateway restrictions, confining Arctic-Global Ocean exchange exclusively to the Greenland-Norwegian Seaway, drive Arctic Ocean surface freshening and southward outflow of buoyant, low-salinity waters. However, only the combined effect of these two factors leads to both Arctic freshening and increased water mass stratification in the Greenland-Norwegian Seaway, proto-North Atlantic, and the Western Tethys. This scenario aligns with Maastrichtian palynological, micropaleontological, and geochemical records from high- and low-latitude sites. Our findings highlight the profound impact of these latest Cretaceous paleogeographic reconfigurations in altering global salinity patterns, underscoring their role as key drivers of global climate dynamics.

Identifiers

PMID40769971
PMCPMC12328591

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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.