Evidence map›Paper›PMID 42315601›Full record

ArticleScientific reports2026

Euxinic conditions and altered biogeochemical cycles in a Patagonian fjord influenced by volcanic activity.

Iván Pérez-Santos, Paulina Montero, Marcelo H Gutiérrez, Gerdhard L Jessen, Alexander Galán, Laura Farías, Leonardo Castro, Camilo Rodriguéz-Villegas, Patricio A Díaz, Claudia Aracena and 15 more

Abstract read
In one paragraph

Article in Scientific reports, 2026. 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

25 authors.

Iván Pérez-SantosCentro i-mar, Universidad de Los Lagos, Puerto Montt, Chile. ivan.perez@ulagos.cl.ORCID https://orcid.org/0000-0002-0184-1122
Paulina MonteroCenter for Oceanographic Research COPAS Coastal, Universidad de Concepción, Concepción, Chile.
Marcelo H GutiérrezCenter for Oceanographic Research COPAS Coastal, Universidad de Concepción, Concepción, Chile.
Gerdhard L JessenCenter for Oceanographic Research COPAS Coastal, Universidad de Concepción, Concepción, Chile.
Alexander GalánCenter for Advanced Studies Research in Maule (CIEAM), Office of the Pro-Vice- Chancellor for Research and Graduate Studies, Universidad Católica del Maule, Talca, Chile.
Laura FaríasDepartment of Oceanography, Faculty of Natural Sciences and Oceanography, Universidad de Concepción, Concepción, Chile.
Leonardo CastroCenter for Oceanographic Research COPAS Coastal, Universidad de Concepción, Concepción, Chile.
Camilo Rodriguéz-VillegasCentro i-mar, Universidad de Los Lagos, Puerto Montt, Chile.
Patricio A DíazCentro i-mar, Universidad de Los Lagos, Puerto Montt, Chile.
Claudia AracenaCenter for Research on Natural Resources and Sustainability (CIRENYS), Universidad Bernardo O'Higgins, Santiago, Chile.
Elías PinillaUniversity of Maine, Maine, United States of America.
Karen SanzanaCoastal Social-Ecological Millennium Institute (SECOS), Santiago, Chile.
Aranza L PérezPatagonia Ecosystem Research Center (CIEP), Coyhaique, Chile.
Karina FuentesCenter for Oceanographic Research COPAS Coastal, Universidad de Concepción, Concepción, Chile.
Constanza AsmutPatagonia Ecosystem Research Center (CIEP), Coyhaique, Chile.
Guido Mancilla-GutiérrezCentro i-mar, Universidad de Los Lagos, Puerto Montt, Chile.
Gabriel SotoFisheries Development Institute (IFOP), Putemún Aquaculture Technology Center (CTPA), Castro, Chile.
Cynthia UrrutiaDepartment of Natural Resources and the Environment, Universidad de Los Lagos, 5480000, Puerto Montt, Chile.
Claudio NavarroDepartment of Natural Resources and the Environment, Universidad de Los Lagos, 5480000, Puerto Montt, Chile.
Matías CastroMillennium Institute of Oceanography (IMO), Universidad de Concepción, Concepción, Chile.
David SilvaDepartment of Natural Resources and the Environment, Universidad de Los Lagos, 5480000, Puerto Montt, Chile.
Salma EspinozaDepartment of Oceanography, Faculty of Natural Sciences and Oceanography, Universidad de Concepción, Concepción, Chile.
Laura A BristowDepartment of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
Morten LarsenNordcee, Department of Biology, University of Southern Denmark, Odense, Denmark.
Osvaldo UlloaDepartment of Oceanography, Faculty of Natural Sciences and Oceanography, Universidad de Concepción, Concepción, Chile.

Funding

Agencia Nacional de Investigación y Desarrollo CLAP-R20F0008Agencia Nacional de Investigación y Desarrollo COPAS COASTAL FB210021Agencia Nacional de Investigación y Desarrollo FONDECYT 11230763, COPAS COASTAL FB210021, and PATSER R20F002Agencia Nacional de Investigación y Desarrollo FONDECYT 1211037, 1251038, COPAS COASTAL FB210021Agencia Nacional de Investigación y Desarrollo ICM 2019-015, CR2 FONDAP-ANID 1522A0001, and FONDECYT 1250210
6 · The paper itself

Abstract

Fjords in Chilean Patagonia are highly dynamic systems shaped by land-derived inputs, oceanic exchange, and volcanic activity. Prior to the elaboration of the present article, no in-depth investigation had been undertaken into the anoxic or euxinic conditions of fjords in this region. Consequently, the present research represents an interdisciplinary oceanographic approach to studying Quitralco Fjord (45.6° S, 73.1° W; 2022-2025) and provides the first evidence of a volcanically influenced euxinic fjord in Chilean Patagonia. A subsurface anoxic layer, beginning between 90 and 120 m and extending to the basin floor (~ 160 m), was shown to exhibit elevated temperatures and high concentrations of H

Identifiers

PMID42315601
PMCPMC13458620

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Registered trials

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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.