• Login
    View Item 
    •   DSpace Home
    • INVESTIGACIÓN
    • Artículos WOS
    • View Item
    •   DSpace Home
    • INVESTIGACIÓN
    • Artículos WOS
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    El Repositorio Institucional de la Universidad Mayor, tiene como objetivo publicar, en formato digital, todos los objetos derivados de su producción científica, académica, cultural y artística. En palabras simples es una vitrina que pone en valor su patrimonio documental.


    InformaciónInicioAcerca deFormulariosManuales

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    xmlui.EPerson.Navigation.loginxmlui.EPerson.Navigation.register

    Seabird and pinniped shape soil bacterial communities of their settlements in Cape Shirreff, Antarctica

    Thumbnail
    Date
    2019
    Author

    Trefault, Nicole [Univ Mayor, Fac Sci, Ctr Gen Ecol & Environm GEMA, Santiago, Chile]

    Ramírez-Fernández, Lia

    Caru, Margarita

    Orlando, Julieta

    Geographic location

    Note
    Tools
    Cite
    Vea como citar este artículo

    Show full item record
    Abstract
    Seabirds and pinnipeds play an important role in biogeochemical cycling by transferring nutrients from aquatic to terrestrial environments. Indeed, soils rich in animal depositions have generally high organic carbon, nitrogen and phosphorus contents. Several studies have assessed bacterial diversity in Antarctic soils influenced by marine animals; however most have been conducted in areas with significant human impact. Thus, we chose Cape Shirreff, Livingston Island, an Antarctic Specially Protected Area designated mainly to protect the diversity of marine vertebrate fauna, and selected sampling sites with different types of animals coexisting in a relatively small space, and where human presence and impact are negligible. Using 16S rRNA gene analyses through massive sequencing, we assessed the influence of animal concentrations, via their modification of edaphic characteristics, on soil bacterial diversity and composition. The nutrient composition of soils impacted by Antarctic fur seals and kelp gulls was more similar to that of control soils (i.e. soils without visible presence of plants or animals), which may be due to the more active behaviour of these marine animals compared to other species. Conversely, the soils from concentrations of southern elephant seals and penguins showed greater differences in soil nutrients compared to the control. In agreement with this, the bacterial communities of the soils associated with these animals were most different from those of the control soils, with the soils of penguin colonies also possessing the lowest bacterial diversity. However, all the soils influenced by the presence of marine animals were dominated by bacteria belonging to Gammaproteobacteria, particularly those of the genus Rhodanobacter. Therefore, we conclude that the modification of soil nutrient composition by marine vertebrates promotes specific groups of bacteria, which could play an important role in the recycling of nutrients in terrestrial Antarctic ecosystems.
    URI
    https://doi.org/10.1371/journal.pone.0209887
    http://repositorio.umayor.cl/xmlui/handle/sibum/6443
    https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0209887
    Collections
    • Artículos WOS
    • Centro de Genómica, Ecología y Medio Ambiente (GEMA)

    Si usted es autor(a) de este documento y NO desea que su publicación tenga acceso público en este repositorio, por favor complete el formulario aquí.


    Contact Us | Send Feedback
    Modificado por: Sistema de Bibliotecas Universidad Mayor - SIBUM
    DSpace software copyright © 2002-2018  DuraSpace
     

     



    Contact Us | Send Feedback
    Modificado por: Sistema de Bibliotecas Universidad Mayor - SIBUM
    DSpace software copyright © 2002-2018  DuraSpace