Complexity of river ciliate communities at a national park highlights the need for microbial conservation

Quintela‐Alonso, Pablo, Pérez‐Uz, Blanca, Sanchez‐Jimenez, Abel, Murciano, Antonio, Centeno, Juan D., García‐Rodríguez, Manuel, Montero, Esperanza, Muñoz, Benito, Olmedo, Cristina, Refoyo, Pablo, Velasco‐González, Ismael y Martín‐Cereceda, Mercedes . (2018) Complexity of river ciliate communities at a national park highlights the need for microbial conservation. Aquatic Conservation: Marine and Freshwater Ecosystems, 28 (2). pp. 408-421

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Título Complexity of river ciliate communities at a national park highlights the need for microbial conservation
Autor(es) Quintela‐Alonso, Pablo
Pérez‐Uz, Blanca
Sanchez‐Jimenez, Abel
Murciano, Antonio
Centeno, Juan D.
García‐Rodríguez, Manuel
Montero, Esperanza
Muñoz, Benito
Olmedo, Cristina
Refoyo, Pablo
Velasco‐González, Ismael
Martín‐Cereceda, Mercedes
Materia(s) Ciencias
Abstract 1. Microorganisms play pivotal roles in aquatic ecosystems. Free‐living protists are the main components of the eukaryotic microbial communities at the base of freshwater ecosystems. Ciliate grazing channels a large proportion of organic matter into multicellular organisms. Surprisingly, ciliates and other microorganisms are neglected in global conservation schemes. 2. Interstitial ciliates were sampled in three sites of varying human pressure on the River Manzanares (La Pedriza National Park, Spain). Abundances of trophic groups and species were adjusted to a generalized linear model (GLM Poisson regression). 3. Ciliate communities were rich in species (74 morphotypes) and although traditional microscopy retrieved a high number of species that appeared only once or in low numbers, rarefaction analyses estimated much larger species richness. These results illustrate that rarefaction assays are a useful first step for exploring the extent of the ciliate cryptic diversity in freshwater ecosystems. 4. Benthic ciliate communities changed significantly, both spatially and at a short temporal scale. The fluctuating nature of the community was manifested by the presence of many ephemeral species at the same river site, revealing a complex and transient community structure. No significant short‐term changes were observed in the physical–chemical properties. Therefore, even slight differences in the abiotic variables may cause rapid shifts of ciliate species. 5. Overall, human pressure had an effect on the interstitial (or benthic) ciliates that resulted in a reduction of species richness and their abundance.
Palabras clave benthos
biodiversity
ciliates
generalized linear models
human pressure
microbial habitats
protected areas
protists
river
Editor(es) John Wiley and Sons
Fecha 2018-04
Formato application/pdf
Identificador bibliuned:DptoCA-FCIE-Articulos-Mgarcia-0001
http://e-spacio.uned.es/fez/view/bibliuned:DptoCA-FCIE-Articulos-Mgarcia-0001
DOI - identifier https://doi.org/10.1002/aqc.2852
ISSN - identifier 1052-7613
Nombre de la revista Aquatic Conservation: Marine and Freshwater Ecosystems
Número de Volumen 28
Número de Issue 2
Página inicial 408
Página final 421
Publicado en la Revista Aquatic Conservation: Marine and Freshwater Ecosystems, 28 (2). pp. 408-421
Idioma eng
Versión de la publicación publishedVersion
Tipo de recurso Article
Derechos de acceso y licencia http://creativecommons.org/licenses/by-nc-nd/4.0
info:eu-repo/semantics/openAccess
Tipo de acceso Acceso abierto
Notas adicionales The registered version of this article, first published in Aquatic Conservation: Marine and Freshwater Ecosystems, is available online at the publisher's website: John Wiley and Sons, https://doi.org/10.1002/aqc.2852
Notas adicionales La versión registrada de este artículo, publicado por primera vez en Aquatic Conservation: Marine and Freshwater Ecosystems, está disponible en línea en el sitio web del editor: John Wiley and Sons, https://doi.org/10.1002/aqc.2852

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Creado: Wed, 24 Jan 2024, 23:48:57 CET