title: Common and Rare Taxa of Planktonic Ciliates: Influence of Flood Events and Biogeographic Patterns in Neotropical Floodplains.
abstract: After much discussion about the cosmopolitan nature of microbes, the great issue nowadays is to identify at which spatial extent microorganisms may display biogeographic patterns and if temporal variation is important in altering those patterns. Here, planktonic ciliates were sampled from shallow lakes of four Neotropical floodplains, distributed over a spatial extent of ca. 3000 km, during high and low water periods, along with several abiotic and biotic variables potentially affecting the ciliate community. We found that common ciliate species were more associated with environmental gradients and rare species were more related to spatial variables; however, this pattern seemed to change depending on the temporal and spatial scales considered. Environmental gradients were more important in the high waters for both common and rare species. In low waters, common species continued to be mainly driven by environmental conditions, but rare species were more associated with the spatial component, suggesting dispersal limitation likely due to differences in dispersal ability and ecological tolerance of species. We also found that common and rare species were related to different environmental variables, suggesting different ecological niches. At the largest spatial extents, rare species showed clear biogeographic patterns.
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil. biatsegovia@gmail.com.
authors.forename: Bianca Trevizan
authors.initials: BT
authors.lastname: Segovia
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
authors.forename: Juliana Déo
authors.initials: JD
authors.lastname: Dias
authors.affiliation: Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil.
authors.forename: Adalgisa Fernanda
authors.initials: AF
authors.lastname: Cabral
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
authors.forename: Bianca Ramos
authors.initials: BR
authors.lastname: Meira
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
authors.forename: Fernando Miranda
authors.initials: FM
authors.lastname: Lansac-Tôha
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil.
authors.forename: Fabio Amodêo
authors.initials: FA
authors.lastname: Lansac-Tôha
authors.affiliation: Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Goiânia, GO, Brazil.
authors.forename: Luis Mauricio
authors.initials: LM
authors.lastname: Bini
authors.affiliation: Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura (NUPELIA), Universidade Estadual de Maringá, Maringá, Paraná, Brazil.|Programa de Pós-Graduação em Tecnologias Limpas, Centro Universitário Cesumar - UniCesumar/Instituto Cesumar de Ciência, Tecnologia e Inovação (ICETI), Maringá, Paraná, Brazil.
authors.forename: Luiz Felipe Machado
authors.initials: LFM
authors.lastname: Velho
mesh_terms: D000818:Animals; D044822:Biodiversity; D001938:Brazil; D016798:Ciliophora / Q000145:classification / Q000502:physiology*; D055868:Floods; D005843:Geography; D060106:Lakes; D015048:Zooplankton / Q000145:classification / Q000502:physiology*
keywords: Biogeography; Dispersal limitation; Metacommunity; Microbial ecology; Species sorting