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dc.contributor.author
Marcos, Magalí Silvina
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dc.contributor.author
Bertiller, Monica Beatriz
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dc.contributor.author
Olivera, Nelda Lila
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dc.date.available
2020-05-27T22:25:06Z
dc.date.issued
2019-06
dc.identifier.citation
Marcos, Magalí Silvina; Bertiller, Monica Beatriz; Olivera, Nelda Lila; Microbial community composition and network analyses in arid soils of the Patagonian Monte under grazing disturbance reveal an important response of the community to soil particle size; Elsevier Science; Applied Soil Ecology; 138; 6-2019; 223-232
dc.identifier.issn
0929-1393
dc.identifier.uri
http://hdl.handle.net/11336/106088
dc.description.abstract
The effects of livestock grazing on soil microbial communities are not fully understood in arid regions, where water limitations can have significant consequences on soil health and biological processes. Neither are understood the effects of livestock grazing on the interactions among members of the microbial communities. Here, we used high-throughput amplicon sequencing and co-occurrence network analyses to study changes in microbial community composition and networks in soil from plant-patches and inter-patches under sheep grazed and non-grazed conditions within an arid region of Patagonia. In addition, we analyzed soil and vegetation properties that could be influencing the observed microbial patterns. We detected over 2,000 amplicon sequence variants (ASVs) in soils from plant-patches and a similar number in inter-patches, which abundance shifted between the non-grazed and the grazed sites. Among them, members of the Actinomycetales, Solirubrobacterales, Pedosphaerales and Rhizobiales were present. We further found that connections among them in the network analysis were significantly affected by soil texture. Moreover, soil particle size explained between 24.7% and 31.9% of the variance in microbial community composition. Positive network connections increased from 57.8% in the non-grazed site to 88.6% in the grazed site. This may suggest either an increase in cooperative associations within the community, as a strategy to survive under the stressful conditions imposed by grazing, or a selection of microorganisms with similar niche requirements. We further concluded that members of the Actinomycetales and Rhizobiales seem to have a keystone role in the soil communities from this arid ecosystem.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ARID PATAGONIAN SOILS
dc.subject
GRAZED SHRUBLAND
dc.subject
MICROBIAL INTERACTIONS
dc.subject
MICROBIAL NETWORK ANALYSIS
dc.subject
SOIL MICROBIAL COMMUNITY
dc.subject.classification
Conservación de la Biodiversidad
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Microbial community composition and network analyses in arid soils of the Patagonian Monte under grazing disturbance reveal an important response of the community to soil particle size
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-19T18:34:25Z
dc.identifier.eissn
1873-0272
dc.journal.volume
138
dc.journal.pagination
223-232
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Marcos, Magalí Silvina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
dc.description.fil
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina
dc.description.fil
Fil: Olivera, Nelda Lila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina
dc.journal.title
Applied Soil Ecology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.apsoil.2019.03.001
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0929139318315129
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