Articles | Volume 23, issue 21
https://doi.org/10.5194/bg-23-7767-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-7767-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Nov 2026
Research article |
| 05 Nov 2026
| 05 Nov 2026
Riverine biogeochemistry from the Andes to the ocean: longitudinal patterns along a Mediterranean Andean catchment in central Chile
BioGeoQuím Lab, Instituto de Ciencias Agroalimentarias, Animales y Ambientales, Universidad de O'Higgins, San Fernando, 3007000, Chile
Simona Retelletti Brogi
Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, Trieste, 34010, Italy
Consiglio Nazionale delle Ricerche (CNR), Istituto di Biofisica, Pisa, 56124, Italy
Céline Lavergne
Department of Physiology, Genetics and Microbiology, University of Alicante, San Vicente del Raspeig, 03690, Spain
HUB AMBIENTAL UPLA and Departamento de Ciencias y Geografía, Universidad de Playa Ancha, Valparaíso, 2340000, Chile
Zoé Hayet
BioGeoQuím Lab, Instituto de Ciencias Agroalimentarias, Animales y Ambientales, Universidad de O'Higgins, San Fernando, 3007000, Chile
Mario Flores
Carrera de Pregrado Ingeniería Ambiental, Universidad de O'Higgins, San Fernando, 3007000, Chile
Fernando Lizana
Magíster de Ciencias Ambientales y de la Tierra, Instituto de Ciencias Agroalimentarias, Animales y Ambientales, Universidad de O'Higgins, Rancagua, 2820000, Chile
Polette Aguilar-Muñoz
HUB AMBIENTAL UPLA and Departamento de Ciencias y Geografía, Universidad de Playa Ancha, Valparaíso, 2340000, Chile
Centro de Investigación Oceanográfica COPAS COASTAL, Universidad de Concepción, Concepción, 3349001, Chile
Leo Chasselin
Centre de Recherches en Environnement Côtier, Université de Caen, Luc-sur-Mer, 14530, France
Chiara Santinelli
Consiglio Nazionale delle Ricerche (CNR), Istituto di Biofisica, Pisa, 56124, Italy
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Ocean liming is a technique proposed to mitigate ocean acidification. Every action we take has an impact on the environment and the effects on the invisible world are often overlooked. With this study, we show that lime addition impacts the dynamics of dissolved organic matter, one of the largest reservoirs of carbon on Earth, representing the main source of energy for marine microbes. Further studies to assess the impacts on marine ecosystems are therefore crucial before taking any action.
Christian Lønborg, Cátia Carreira, Gwenaël Abril, Susana Agustí, Valentina Amaral, Agneta Andersson, Javier Arístegui, Punyasloke Bhadury, Mariana B. Bif, Alberto V. Borges, Steven Bouillon, Maria Ll. Calleja, Luiz C. Cotovicz Jr., Stefano Cozzi, Maryló Doval, Carlos M. Duarte, Bradley Eyre, Cédric G. Fichot, E. Elena García-Martín, Alexandra Garzon-Garcia, Michele Giani, Rafael Gonçalves-Araujo, Renee Gruber, Dennis A. Hansell, Fuminori Hashihama, Ding He, Johnna M. Holding, William R. Hunter, J. Severino P. Ibánhez, Valeria Ibello, Shan Jiang, Guebuem Kim, Katja Klun, Piotr Kowalczuk, Atsushi Kubo, Choon-Weng Lee, Cláudia B. Lopes, Federica Maggioni, Paolo Magni, Celia Marrase, Patrick Martin, S. Leigh McCallister, Roisin McCallum, Patricia M. Medeiros, Xosé Anxelu G. Morán, Frank E. Muller-Karger, Allison Myers-Pigg, Marit Norli, Joanne M. Oakes, Helena Osterholz, Hyekyung Park, Maria Lund Paulsen, Judith A. Rosentreter, Jeff D. Ross, Digna Rueda-Roa, Chiara Santinelli, Yuan Shen, Eva Teira, Tinkara Tinta, Guenther Uher, Masahide Wakita, Nicholas Ward, Kenta Watanabe, Yu Xin, Youhei Yamashita, Liyang Yang, Jacob Yeo, Huamao Yuan, Qiang Zheng, and Xosé Antón Álvarez-Salgado
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In this paper, we present the first edition of a global database compiling previously published and unpublished measurements of dissolved organic matter (DOM) collected in coastal waters (CoastDOM v1). Overall, the CoastDOM v1 dataset will be useful to identify global spatial and temporal patterns and to facilitate reuse in studies aimed at better characterizing local biogeochemical processes and identifying a baseline for modelling future changes in coastal waters.
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Short summary
Rivers connect mountains and oceans by transporting and transforming natural materials along their course. We studied the Rapel River system in Chile, from the Andes to the Pacific Ocean, to understand how natural conditions and human activities influence river functioning. Our results show that both strongly modify water quality and biological communities, creating important zones of change. These findings improve our understanding of how rivers may respond to future environmental pressures.
Rivers connect mountains and oceans by transporting and transforming natural materials along...
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