2026-04-18T07:32:53Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4870812025-10-05T14:27:33Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Foulquier, Arnaud author Datry, Thibault author Corti, Roland author von Schiller, Daniel author Tockner, Klement author Stubbington, Rachel author Gessner, Mark O. author Boyer, Frédéric author Ohlmann, Marc author Thuiller, Wilfried author Rioux, Delphine author Miquel, Christian author Albariño, Ricardo author Allen, Daniel C. author Altermatt, Florian author Arce, Maria Isabel author Arnon, Shai author Banas, Damien author Banegas-Medina, Andy author Beller, Erin author Blanchette, Melanie L. author Blessing, Joanna author Boëchat, Iola Gonçalves author Boersma, Kate author Bogan, Michael author Bonada, Núria author Bond, Nick author Brintrup, Katherine author Bruder, Andreas author Burrows, Ryan author Cancellario, Tommaso author Canhoto, Cristina author Carlson, Stephanie author Cid, Núria author Cornut, Julien author Danger, Michael author de Freitas Terra, Bianca author De Girolamo, Anna Maria author del Campo, Rubén author Díaz Villanueva, Verónica author Dyer, Fiona author Elosegi, Arturo author Febria, Catherine author Figueroa Jara, Ricardo author Four, Brian author Gafny, Sarig author Gómez, Rosa author Gómez-Gener, Lluís author Guareschi, Simone author Gücker, Björn author Hwan, Jason author Jones, J. Iwan author Kubheka, Patrick S. author Laini, Alex author Langhans, Simone Daniela author Launay, Bertrand author Le Goff, Guillaume author Leigh, Catherine author Little, Chelsea author Lorenz, Stefan author Marshall, Jonathan author Martin Sanz, Eduardo J. author McIntosh, Angus author Mendoza-Lera, Clara author Meyer, Elisabeth I. author Miliša, Marko author Mlambo, Musa C. author Morais, Manuela author Moya, Nabor author Negus, Peter author Niyogi, Dev author Pagán, Iluminada author Papatheodoulou, Athina author Pappagallo, Giuseppe author Pardo, Isabel author Pařil, Petr author Pauls, Steffen U. author Polášek, Marek author Rodríguez-Lozano, Pablo author Rolls, Robert J. author Sánchez-Montoya, Maria Mar author Savić, Ana author Shumilova, Oleksandra author Sridhar, Kandikere R. author Steward, Alisha author Taleb, Amina author Uzan, Avi author Valladares, Yefrin author Vander Vorste, Ross author Waltham, Nathan J. author Zak, Dominik H. author Zoppini, Annamaria author 2024 Altres ajuts: Margalida Comas postdoctoral contract (PD/031/2018) funded by the Government of the Balearic Islands 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. http://hdl.handle.net/2072/487081 Biodiversity Macroecology Community ecology Unravelling large-scale patterns and drivers of biodiversity in dry rivers