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Transition boundaries for protistan species turnover in hypersaline waters of different biogeographic regions.
Filker, Sabine; Forster, Dominik; Weinisch, Lea; Mora-Ruiz, Merit; González, Bernardo; Farías, María Eugenia; Rosselló-Móra, Ramon; Stoeck, Thorsten.
Afiliação
  • Filker S; Department of Molecular Ecology, University of Kaiserslautern, 67663, Kaiserslautern, Germany.
  • Forster D; Department of Ecology, University of Kaiserslautern, 67663, Kaiserslautern, Germany.
  • Weinisch L; Department of Ecology, University of Kaiserslautern, 67663, Kaiserslautern, Germany.
  • Mora-Ruiz M; Marine Microbiology Group, Department of Ecology and Marine Resources, Institut Mediterrani d'Estudis Avançats, IMEDEA (CSIC-UIB), 07190 Esporles, Illes Balears, Spain.
  • González B; Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez - Center of Applied Ecology and Sustainability, Santiago de Chile, Chile.
  • Farías ME; Laboratorio de Investigaciones Microbiológicas de Lagunas Andinas (LIMLA), Planta Piloto de Procesos Industriales Microbiológicos (PROIMI), CCT, CONICET, San Miguel de Tucumán, Tucumán, Argentina.
  • Rosselló-Móra R; Marine Microbiology Group, Department of Ecology and Marine Resources, Institut Mediterrani d'Estudis Avançats, IMEDEA (CSIC-UIB), 07190 Esporles, Illes Balears, Spain.
  • Stoeck T; Department of Ecology, University of Kaiserslautern, 67663, Kaiserslautern, Germany.
Environ Microbiol ; 19(8): 3186-3200, 2017 08.
Article em En | MEDLINE | ID: mdl-28574222
The identification of environmental barriers which govern species distribution is a fundamental concern in ecology. Even though salt was previously identified as a major transition boundary for micro- and macroorganisms alike, the salinities causing species turnover in protistan communities are unknown. We investigated 4.5 million high-quality protistan metabarcodes (V4 region of the SSU rDNA) obtained from 24 shallow salt ponds (salinities 4%-44%) from South America and Europe. Statistical analyses of protistan community profiles identified four salinity classes, which strongly selected for different protistan communities: 4-9%, 14-24%, 27-36% and 38-44%. The proportion of organisms unknown to science is highest in the 14-24% salinity class, showing that environments within this salinity range are an unappreciated reservoir of as yet undiscovered organisms. Distinct higher-rank taxon groups dominated in the four salinity classes in terms of diversity. As increasing salinities require different cellular responses to cope with salt, our results suggest that different evolutionary lineages of protists have evolved distinct haloadaptation strategies. Salinity appears to be a stronger selection factor for the structuring of protistan communities than geography. Yet, we find a higher degree of endemism in shallow salt ponds compared with less isolated ecosystems such as the open ocean. Thus, rules for biogeographic structuring of protistan communities are not universal, but depend on the ecosystem under consideration.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Lagoas / Eucariotos Tipo de estudo: Prognostic_studies País/Região como assunto: America do sul / Europa Idioma: En Revista: Environ Microbiol Assunto da revista: MICROBIOLOGIA / SAUDE AMBIENTAL Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Lagoas / Eucariotos Tipo de estudo: Prognostic_studies País/Região como assunto: America do sul / Europa Idioma: En Revista: Environ Microbiol Assunto da revista: MICROBIOLOGIA / SAUDE AMBIENTAL Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Alemanha País de publicação: Reino Unido