Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade

Abstract 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...

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Main Authors: Juan Manuel González-Olalla, Juan Manuel Medina-Sánchez, Ismael L. Lozano, Manuel Villar-Argaiz, Presentación Carrillo
Format: Article
Language:English
Published: Nature Portfolio 2018-07-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-018-28543-2
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author Juan Manuel González-Olalla
Juan Manuel Medina-Sánchez
Ismael L. Lozano
Manuel Villar-Argaiz
Presentación Carrillo
author_facet Juan Manuel González-Olalla
Juan Manuel Medina-Sánchez
Ismael L. Lozano
Manuel Villar-Argaiz
Presentación Carrillo
author_sort Juan Manuel González-Olalla
collection DOAJ
description Abstract 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.
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spelling doaj.art-86d1f9208db144d38bb6b80e895f84712022-12-21T23:37:36ZengNature PortfolioScientific Reports2045-23222018-07-018111210.1038/s41598-018-28543-2Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decadeJuan Manuel González-Olalla0Juan Manuel Medina-Sánchez1Ismael L. Lozano2Manuel Villar-Argaiz3Presentación Carrillo4Departamento de Ecología, Facultad de Ciencias, Universidad de GranadaDepartamento de Ecología, Facultad de Ciencias, Universidad de GranadaDepartamento de Ecología, Facultad de Ciencias, Universidad de GranadaDepartamento de Ecología, Facultad de Ciencias, Universidad de GranadaInstituto del Agua, Universidad de GranadaAbstract 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.https://doi.org/10.1038/s41598-018-28543-2
spellingShingle Juan Manuel González-Olalla
Juan Manuel Medina-Sánchez
Ismael L. Lozano
Manuel Villar-Argaiz
Presentación Carrillo
Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
Scientific Reports
title Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
title_full Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
title_fullStr Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
title_full_unstemmed Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
title_short Climate-driven shifts in algal-bacterial interaction of high-mountain lakes in two years spanning a decade
title_sort climate driven shifts in algal bacterial interaction of high mountain lakes in two years spanning a decade
url https://doi.org/10.1038/s41598-018-28543-2
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