Climate-driven shifts in algalbacterial interaction of highmountain lakes in two years spanning a decade González Olalla, Juan Manuel Medina Sánchez, Juan Manuel Lozano, Ismael L. Villar Argáiz, Manuel Carrillo Lechuga, Presentación Phytoplankton-bacteria interaction High mountain lakes Interactive stressors Temperature Atmospheric dust Algal-bacterial interactions include mutualism, commensalism, and predation. However, how multiple environmental conditions that regulate the strength and prevalence of a given interaction remains unclear. Here, we test the hypothesis that the prevailing algal-bacterial interaction shifted in two years (2005 versus 2015), due to increased temperature (T) and Saharan dust depositions in high-mountain lakes of Sierra Nevada (S Spain). Our results support the starting hypothesis that the nature of the prevailing algal-bacterial interaction shifted from a bacterivory control exerted by algae to commensalism, coinciding with a higher air and water T as well as the lower ratio sestonic nitrogen (N): phosphorous (P), related to greater aerosol inputs. Projected global change conditions in Mediterranean region could decline the functional diversity and alter the role of mixotrophy as a carbon (C) by-pass in the microbial food web, reducing the biomass-transfer efficiency up the web by increasing the number of trophic links. 2025-01-22T13:04:18Z 2025-01-22T13:04:18Z 2018-07-06 journal article González-Olalla, J.M., Medina-Sánchez, J.M., Lozano, I.L. et al. Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade. Sci Rep 8, 10278 (2018). https://doi.org/10.1038/s41598-018-28543-2 https://hdl.handle.net/10481/100022 10.1038/s41598-018-28543-2 eng http://creativecommons.org/licenses/by-sa/4.0/ open access Atribución-CompartirIgual 4.0 Internacional