Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands

Background and Aims: In highland ecosystems, global change processes are intense and foster vegetation shifts that may have an impact on soil functioning. Soil bacterial communities may be particularly sensitive to these changing scenarios. The aim of this research is to determine whether the loss o...

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Autores: Canals Tresserras, Rosa María, Múgica Azpilicueta, Leire, Durán Lázaro, María, San Emeterio Garciandía, Leticia
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/37089
Acceso en línea:https://hdl.handle.net/2454/37089
Access Level:acceso abierto
Palabra clave:Grassland diversity
Native plant spread
Brachypodium rupestre
Disturbance regime
Enzymatic activities
N cycle
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spelling Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslandsCanals Tresserras, Rosa MaríaMúgica Azpilicueta, LeireDurán Lázaro, MaríaSan Emeterio Garciandía, LeticiaGrassland diversityNative plant spreadBrachypodium rupestreDisturbance regimeEnzymatic activitiesN cycleBackground and Aims: In highland ecosystems, global change processes are intense and foster vegetation shifts that may have an impact on soil functioning. Soil bacterial communities may be particularly sensitive to these changing scenarios. The aim of this research is to determine whether the loss of floristic diversity caused by the unusual dominance of a native component -the perennial grass Brachypodium rupestre (L.) Beauv., which is expanding aggressively in natural grasslands of the Western Pyrenees-, parallels a decrease of the soil bacterial functional diversity and their potential for nutrient transformations. Methods: We conducted the study in eight grasslands exposed to different degrees of B. rupestre spreading. Soil community physiological profiles of the heterotrophic bacteria, enzymatic activities related to C, P and N cycles, C and N microbial biomasses, N components and soil physical and chemical properties were determined. Results: Soils below low-diversity grasslands had lower bacterial functional richness and diversity but greater urease activity, pH and nitrate than soils in diverse grasslands. Ammonium pools, C and N microbial biomasses and enzymatic activities related to C and P did not differ between grasslands. Conclusions: The expansion of B. rupestre and the decrease of plant diversity coincided with a significant decline of bacterial functional diversity and an alteration of the N cycle. Not only plant composition but the prevailing disturbance regime may account for the results. Results also suggest that B. rupestre may rely on its capability to use N efficiently rather than on a soil bacteria-mediated N availability.The Spanish Ministry of Science and Innovation (CGL2011-29746) financed this research. M. Durán and L. Múgica got funding through an UPNA’s Research Staff Training Grant and L. San Emeterio by an UPNA’s Talent Recruitment Contract.SpringerAgronomia, Bioteknologia eta ElikaduraInstitute on Innovation and Sustainable Development in Food Chain - ISFOODAgronomía, Biotecnología y AlimentaciónUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoa2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/37089reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/MICINN//CGL2011-29746© Springer Nature Switzerland AG 2019info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/370892026-06-17T12:41:47Z
dc.title.none.fl_str_mv Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
title Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
spellingShingle Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
Canals Tresserras, Rosa María
Grassland diversity
Native plant spread
Brachypodium rupestre
Disturbance regime
Enzymatic activities
N cycle
title_short Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
title_full Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
title_fullStr Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
title_full_unstemmed Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
title_sort Soil bacterial functional diversity mirrors the loss of plant diversity by the expansion of a native tall-grass in high mountain grasslands
dc.creator.none.fl_str_mv Canals Tresserras, Rosa María
Múgica Azpilicueta, Leire
Durán Lázaro, María
San Emeterio Garciandía, Leticia
author Canals Tresserras, Rosa María
author_facet Canals Tresserras, Rosa María
Múgica Azpilicueta, Leire
Durán Lázaro, María
San Emeterio Garciandía, Leticia
author_role author
author2 Múgica Azpilicueta, Leire
Durán Lázaro, María
San Emeterio Garciandía, Leticia
author2_role author
author
author
dc.contributor.none.fl_str_mv Agronomia, Bioteknologia eta Elikadura
Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
Agronomía, Biotecnología y Alimentación
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
dc.subject.none.fl_str_mv Grassland diversity
Native plant spread
Brachypodium rupestre
Disturbance regime
Enzymatic activities
N cycle
topic Grassland diversity
Native plant spread
Brachypodium rupestre
Disturbance regime
Enzymatic activities
N cycle
description Background and Aims: In highland ecosystems, global change processes are intense and foster vegetation shifts that may have an impact on soil functioning. Soil bacterial communities may be particularly sensitive to these changing scenarios. The aim of this research is to determine whether the loss of floristic diversity caused by the unusual dominance of a native component -the perennial grass Brachypodium rupestre (L.) Beauv., which is expanding aggressively in natural grasslands of the Western Pyrenees-, parallels a decrease of the soil bacterial functional diversity and their potential for nutrient transformations. Methods: We conducted the study in eight grasslands exposed to different degrees of B. rupestre spreading. Soil community physiological profiles of the heterotrophic bacteria, enzymatic activities related to C, P and N cycles, C and N microbial biomasses, N components and soil physical and chemical properties were determined. Results: Soils below low-diversity grasslands had lower bacterial functional richness and diversity but greater urease activity, pH and nitrate than soils in diverse grasslands. Ammonium pools, C and N microbial biomasses and enzymatic activities related to C and P did not differ between grasslands. Conclusions: The expansion of B. rupestre and the decrease of plant diversity coincided with a significant decline of bacterial functional diversity and an alteration of the N cycle. Not only plant composition but the prevailing disturbance regime may account for the results. Results also suggest that B. rupestre may rely on its capability to use N efficiently rather than on a soil bacteria-mediated N availability.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/37089
url https://hdl.handle.net/2454/37089
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//CGL2011-29746
dc.rights.none.fl_str_mv © Springer Nature Switzerland AG 2019
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © Springer Nature Switzerland AG 2019
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
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