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dc.contributor.authorFernández, Leonardo D.
dc.contributor.authorSeppey, Victor William Christophe
dc.contributor.authorSinger, David
dc.contributor.authorFournier, Bertrand
dc.contributor.authorTatti, Dylan
dc.contributor.authorMitchell, Edward A.D.
dc.contributor.authorLara, Enrique
dc.date.accessioned2022-03-25T13:53:19Z
dc.date.available2022-03-25T13:53:19Z
dc.date.issued2021-05-30
dc.description.abstractAncestral adaptations to tropical-like climates drive most multicellular biogeography and macroecology. Observational studies suggest that this niche conservatism could also be shaping unicellular biogeography and macroecology, although evidence is limited to Acidobacteria and testate amoebae. We tracked the phylogenetic signal of this niche conservatism in far related and functionally contrasted groups of common soil protists (Bacillariophyta, Cercomonadida, Ciliophora, Euglyphida and Kinetoplastida) along a humid but increasingly cold elevational gradient in Switzerland. Protist diversity decreased, and the size of the geographic ranges of taxa increased with elevation and associated decreasing temperature (climate), which is consistent with a macroecological pattern known as the Rapoport effect. Bacillariophyta exhibited phylogenetically overdispersed communities assembled by competitive exclusion of closely related taxa with shared (conserved) niches. By contrast, Cercomonadida, Ciliophora, Euglyphida and Kinetoplastida exhibited phylogenetically clustered communities assembled by habitat filtering, revealing the coexistence of closely related taxa with shared (conserved) adaptations to cope with the humid but temperate to cold climate of the study site. Phylobetadiversity revealed that soil protists exhibit a strong phylogenetic turnover among elevational sites, suggesting that most taxa have evolutionary constraints that prevent them from colonizing the colder and higher sites of the elevation gradient. Our results suggest that evolutionary constraints determine how soil protists colonize climates departing from warm and humid conditions. We posit that these evolutionary constraints are linked to an ancestral adaptation to tropical-like climates, which limits their survival in exceedingly cold sites. This niche conservatism possibly drives their biogeography and macroecology along latitudinal and altitudinal climatic gradients.en_US
dc.identifier.citationFernández, Seppey, Singer, Fournier, Tatti, Mitchell, Lara. Niche Conservatism Drives the Elevational Diversity Gradient in Major Groups of Free-Living Soil Unicellular Eukaryotes. Microbial Ecology. 2021en_US
dc.identifier.cristinIDFRIDAID 2000398
dc.identifier.doi10.1007/s00248-021-01771-2
dc.identifier.issn0095-3628
dc.identifier.issn1432-184X
dc.identifier.urihttps://hdl.handle.net/10037/24573
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.journalMicrobial Ecology
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.titleNiche Conservatism Drives the Elevational Diversity Gradient in Major Groups of Free-Living Soil Unicellular Eukaryotesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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