2026-04-14T05:23:56Zhttps://recercat.cat/oai/request

oai:recercat.cat:20.500.12327/36152025-10-22T11:02:07Zcom_2072_4428com_2072_4427col_2072_487898

Unravelling large-scale patterns and drivers of biodiversity in dry rivers Foulquier, Arnaud Datry, Thibault Corti, Roland von Schiller, Daniel Tockner, Klement Stubbington, Rachel Gessner, Mark O. Boyer, Frédéric Ohlmann, Marc Thuiller, Wilfried Rioux, Delphine Miquel, Christian Albariño, Ricardo Allen, Daniel C. Altermatt, Florian Arce, Maria Isabel Arnon, Shai Banas, Damien Banegas-Medina, Andy Beller, Erin Blanchette, Melanie L. Blessing, Joanna Gonçalves Boëchat, Iola Boersma, Kate Bogan, Michael Bonada, Núria Bond, Nick Brintrup, Katherine Bruder, Andreas Burrows, Ryan Cancellario, Tommaso Canhoto, Cristina Carlson, Stephanie Cid, Núria Cornut, Julien Danger, Michael de Feritas Terra, Bianca De Girolamo, Anna Maria del Campo, Rubén Díaz Villanueva, Verónica Dyer, Fiona Elosegi, Arturo Febria, Catherine Figueroa Jara, Ricardo Four, Brian Gafny, Sarig Gómez, Rosa Gómez-Gener, Lluís Guareschi, Simone Gücker, Björn Hwan, Jason Jones, J. Iwan Kubheka, Patrick S. Laini, Alex Langhans, Simone Daniela Launay, Bertrand Le Goff, Guillaume Leigh, Catherine Little, Chelsea Lorenz, Stefan Marshall, Jonathan Martin Sanz, Eduardo J. McIntosh, Angus Mendoza-Lera, Clara Meyer, Elisabeth I. Miliša, Marko Mlambo, Musa C. Morais, Manuela Moya, Nabor Negus, Peter Niyogi, Dev Pagán, Iluminada Papatheodoulou, Athina Pappagallo, Giuseppe Pardo, Isabel Pařil, Petr Pauls, Steffen U. Polášek, Marek Rodríguez-Lozano, Pablo Rolls, Robert J. Sánchez-Montoya, Maria Mar Savić, Ana Shumilova, Oleksandra Sridhar, Kandikere R. Steward, Alisha Taleb, Amina Uzan, Avi Valladares, Yefrin Vander Vorste, Ross Waltham, Nathan J. Zak, Dominik H. Zoppini, Annamaria Producció Animal Aigües Marines i Continentals More than half of the world’s rivers dry up periodically, but our understanding of the biological communities in dry riverbeds remains limited. Specifically, the roles of dispersal, environmental filtering and biotic interactions in driving biodiversity in dry rivers are poorly understood. Here, we conduct a large-scale coordinated survey of patterns and drivers of biodiversity in dry riverbeds. We focus on eight major taxa, including microorganisms, invertebrates and plants: Algae, Archaea, Bacteria, Fungi, Protozoa, Arthropods, Nematodes and Streptophyta. We use environmental DNA metabarcoding to assess biodiversity in dry sediments collected over a 1-year period from 84 non-perennial rivers across 19 countries on four continents. Both direct factors, such as nutrient and carbon availability, and indirect factors such as climate influence the local biodiversity of most taxa. Limited resource availability and prolonged dry phases favor oligotrophic microbial taxa. Co-variation among taxa, particularly Bacteria, Fungi, Algae and Protozoa, explain more spatial variation in community composition than dispersal or environmental gradients. This finding suggests that biotic interactions or unmeasured ecological and evolutionary factors may strongly influence communities during dry phases, altering biodiversity responses to global changes. 2025-10-22T11:02:07Z 2025-10-22T11:02:07Z 2025-10-22T11:02:07Z 2024-08-22 info:eu-repo/semantics/article Foulquier, Arnaud, Thibault Datry, Roland Corti, Daniel Von Schiller, Klement Tockner, Rachel Stubbington, Mark O. Gessner, et al. 2024. “Unravelling Large-scale Patterns and Drivers of Biodiversity in Dry Rivers.” Nature Communications 15 (1): 7233. https://doi.org/10.1038/s41467-024-50873-1. 2041-1723 http://hdl.handle.net/20.500.12327/3615 https://doi.org/10.1038/s41467-024-50873-1 eng Nature Communications EC/H2020/869226/EU/Securing biodiversity, functional integrity and ecosystem services in DRYing rivER networks/DRYvER MICIU/Programa Estatal de promoción del talento y su empleabilidad en I+D+I/IJC2019-041601-I/ES/ / http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 International Nature Research