Structure and function of soil microbial communities in fertile islands in austral drylands

Autores
Toledo, Santiago; Peri, Pablo Luis; Correa, Olga S.; Montecchia, Marcela Susana; Gargaglione, Veronica Beatriz; Ladd, Brenton
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fertile islands are an important determinant of ecosystem functioning in drylands. These resourcerich patches are maintained by complex interactions among biotic and abiotic factors. Soil microorganisms are responsible for essential ecosystem processes and could affect the ability of fertile islands to capture and cycle nutrients, both directly and indirectly enhancing the fertile island effect. In this context, we aimed to evaluate the attributes of soil microbial communities (abundance and activity), elucidate key drivers of the fertile island effect and analyze relationships with a range of soil parameters (physicochemical). The soils under shrub canopies had higher values of microbial biomass carbon (MBC) and soil basal respiration (SBR) rates than soils from intercanopy spaces. However, no differences were observed in Soil Organic Carbon (SOC) or in fungal and bacterial abundances between the microhabitats. Soil nutrient stocks (NPK) and pH values had a positive correlation with MBC and SBR. Also, a positive correlation was observed for fungi abundance and the K content of the soil. We also observed a positive correlation between the bacterial abundance and soil N content. This study suggests that M. tridens can be considered a keystone species that generates fertility islands, critical for biodiversity and ecosystem functioning. The keystone role that M. tridens plays in this system underscores the importance of improving our understanding of these interactions (plant–soil-microorganisms), especially important as drylands expand and aridity increases due to climate change in the second half of this century.
EEA Santa Cruz
Fil: Toledo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. CIT Santa Cruz; Argentina.
Fil: Toledo, Santiago: Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Correa, Olga S. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.
Fil: Montecchia, Marcela Susana. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.
Fil: Gargaglione Verónica Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Gargaglione Verónica Beatriz. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Gargaglione Verónica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.
Fuente
Austral Ecology 47 (3) : 663–673. (May 2022)
Materia
Arid Zones
Dryland Ecosystems
Bacteria
Fungi
Soil Respiration
Carbon
Canopy
Zonas Aridas
Ecosistemas de Tierras Secas
Hongos
Respiración de Suelo
Carbono
Cubierta de Copas
Microbial Communities
Spatial Heterogeneity
Comunidad Microbiana
Heterogeneidad Espacial
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/11673
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network_name_str INTA Digital (INTA)
spelling Structure and function of soil microbial communities in fertile islands in austral drylandsToledo, SantiagoPeri, Pablo LuisCorrea, Olga S.Montecchia, Marcela SusanaGargaglione, Veronica BeatrizLadd, BrentonArid ZonesDryland EcosystemsBacteriaFungiSoil RespirationCarbonCanopyZonas AridasEcosistemas de Tierras SecasHongosRespiración de SueloCarbonoCubierta de CopasMicrobial CommunitiesSpatial HeterogeneityComunidad MicrobianaHeterogeneidad EspacialFertile islands are an important determinant of ecosystem functioning in drylands. These resourcerich patches are maintained by complex interactions among biotic and abiotic factors. Soil microorganisms are responsible for essential ecosystem processes and could affect the ability of fertile islands to capture and cycle nutrients, both directly and indirectly enhancing the fertile island effect. In this context, we aimed to evaluate the attributes of soil microbial communities (abundance and activity), elucidate key drivers of the fertile island effect and analyze relationships with a range of soil parameters (physicochemical). The soils under shrub canopies had higher values of microbial biomass carbon (MBC) and soil basal respiration (SBR) rates than soils from intercanopy spaces. However, no differences were observed in Soil Organic Carbon (SOC) or in fungal and bacterial abundances between the microhabitats. Soil nutrient stocks (NPK) and pH values had a positive correlation with MBC and SBR. Also, a positive correlation was observed for fungi abundance and the K content of the soil. We also observed a positive correlation between the bacterial abundance and soil N content. This study suggests that M. tridens can be considered a keystone species that generates fertility islands, critical for biodiversity and ecosystem functioning. The keystone role that M. tridens plays in this system underscores the importance of improving our understanding of these interactions (plant–soil-microorganisms), especially important as drylands expand and aridity increases due to climate change in the second half of this century.EEA Santa CruzFil: Toledo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. CIT Santa Cruz; Argentina.Fil: Toledo, Santiago: Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Correa, Olga S. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.Fil: Montecchia, Marcela Susana. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.Fil: Gargaglione Verónica Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.Fil: Gargaglione Verónica Beatriz. Universidad Nacional de la Patagonia Austral; Argentina.Fil: Gargaglione Verónica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.Wiley2022-04-19T11:42:51Z2022-04-19T11:42:51Z2022-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/11673https://onlinelibrary.wiley.com/doi/abs/10.1111/aec.13151Toledo S.; Peri P.L.; Correa O.S.; Montecchia M.S.; Gargaglione V.; Ladd B. (2022) Structure and function of soil microbial communities in fertile islands in austral drylands. Austral Ecology 47: 663–673.https://doi.org/10.1111/aec.13151Austral Ecology 47 (3) : 663–673. (May 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:45:32Zoai:localhost:20.500.12123/11673instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:45:32.556INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Structure and function of soil microbial communities in fertile islands in austral drylands
title Structure and function of soil microbial communities in fertile islands in austral drylands
spellingShingle Structure and function of soil microbial communities in fertile islands in austral drylands
Toledo, Santiago
Arid Zones
Dryland Ecosystems
Bacteria
Fungi
Soil Respiration
Carbon
Canopy
Zonas Aridas
Ecosistemas de Tierras Secas
Hongos
Respiración de Suelo
Carbono
Cubierta de Copas
Microbial Communities
Spatial Heterogeneity
Comunidad Microbiana
Heterogeneidad Espacial
title_short Structure and function of soil microbial communities in fertile islands in austral drylands
title_full Structure and function of soil microbial communities in fertile islands in austral drylands
title_fullStr Structure and function of soil microbial communities in fertile islands in austral drylands
title_full_unstemmed Structure and function of soil microbial communities in fertile islands in austral drylands
title_sort Structure and function of soil microbial communities in fertile islands in austral drylands
dc.creator.none.fl_str_mv Toledo, Santiago
Peri, Pablo Luis
Correa, Olga S.
Montecchia, Marcela Susana
Gargaglione, Veronica Beatriz
Ladd, Brenton
author Toledo, Santiago
author_facet Toledo, Santiago
Peri, Pablo Luis
Correa, Olga S.
Montecchia, Marcela Susana
Gargaglione, Veronica Beatriz
Ladd, Brenton
author_role author
author2 Peri, Pablo Luis
Correa, Olga S.
Montecchia, Marcela Susana
Gargaglione, Veronica Beatriz
Ladd, Brenton
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Arid Zones
Dryland Ecosystems
Bacteria
Fungi
Soil Respiration
Carbon
Canopy
Zonas Aridas
Ecosistemas de Tierras Secas
Hongos
Respiración de Suelo
Carbono
Cubierta de Copas
Microbial Communities
Spatial Heterogeneity
Comunidad Microbiana
Heterogeneidad Espacial
topic Arid Zones
Dryland Ecosystems
Bacteria
Fungi
Soil Respiration
Carbon
Canopy
Zonas Aridas
Ecosistemas de Tierras Secas
Hongos
Respiración de Suelo
Carbono
Cubierta de Copas
Microbial Communities
Spatial Heterogeneity
Comunidad Microbiana
Heterogeneidad Espacial
dc.description.none.fl_txt_mv Fertile islands are an important determinant of ecosystem functioning in drylands. These resourcerich patches are maintained by complex interactions among biotic and abiotic factors. Soil microorganisms are responsible for essential ecosystem processes and could affect the ability of fertile islands to capture and cycle nutrients, both directly and indirectly enhancing the fertile island effect. In this context, we aimed to evaluate the attributes of soil microbial communities (abundance and activity), elucidate key drivers of the fertile island effect and analyze relationships with a range of soil parameters (physicochemical). The soils under shrub canopies had higher values of microbial biomass carbon (MBC) and soil basal respiration (SBR) rates than soils from intercanopy spaces. However, no differences were observed in Soil Organic Carbon (SOC) or in fungal and bacterial abundances between the microhabitats. Soil nutrient stocks (NPK) and pH values had a positive correlation with MBC and SBR. Also, a positive correlation was observed for fungi abundance and the K content of the soil. We also observed a positive correlation between the bacterial abundance and soil N content. This study suggests that M. tridens can be considered a keystone species that generates fertility islands, critical for biodiversity and ecosystem functioning. The keystone role that M. tridens plays in this system underscores the importance of improving our understanding of these interactions (plant–soil-microorganisms), especially important as drylands expand and aridity increases due to climate change in the second half of this century.
EEA Santa Cruz
Fil: Toledo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. CIT Santa Cruz; Argentina.
Fil: Toledo, Santiago: Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Correa, Olga S. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.
Fil: Montecchia, Marcela Susana. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos; Argentina.
Fil: Gargaglione Verónica Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.
Fil: Gargaglione Verónica Beatriz. Universidad Nacional de la Patagonia Austral; Argentina.
Fil: Gargaglione Verónica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Ladd, Brenton. Universidad Científica del Sur. Escuela de Agroforestería; Perú.
description Fertile islands are an important determinant of ecosystem functioning in drylands. These resourcerich patches are maintained by complex interactions among biotic and abiotic factors. Soil microorganisms are responsible for essential ecosystem processes and could affect the ability of fertile islands to capture and cycle nutrients, both directly and indirectly enhancing the fertile island effect. In this context, we aimed to evaluate the attributes of soil microbial communities (abundance and activity), elucidate key drivers of the fertile island effect and analyze relationships with a range of soil parameters (physicochemical). The soils under shrub canopies had higher values of microbial biomass carbon (MBC) and soil basal respiration (SBR) rates than soils from intercanopy spaces. However, no differences were observed in Soil Organic Carbon (SOC) or in fungal and bacterial abundances between the microhabitats. Soil nutrient stocks (NPK) and pH values had a positive correlation with MBC and SBR. Also, a positive correlation was observed for fungi abundance and the K content of the soil. We also observed a positive correlation between the bacterial abundance and soil N content. This study suggests that M. tridens can be considered a keystone species that generates fertility islands, critical for biodiversity and ecosystem functioning. The keystone role that M. tridens plays in this system underscores the importance of improving our understanding of these interactions (plant–soil-microorganisms), especially important as drylands expand and aridity increases due to climate change in the second half of this century.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-19T11:42:51Z
2022-04-19T11:42:51Z
2022-04-15
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/11673
https://onlinelibrary.wiley.com/doi/abs/10.1111/aec.13151
Toledo S.; Peri P.L.; Correa O.S.; Montecchia M.S.; Gargaglione V.; Ladd B. (2022) Structure and function of soil microbial communities in fertile islands in austral drylands. Austral Ecology 47: 663–673.
https://doi.org/10.1111/aec.13151
url http://hdl.handle.net/20.500.12123/11673
https://onlinelibrary.wiley.com/doi/abs/10.1111/aec.13151
https://doi.org/10.1111/aec.13151
identifier_str_mv Toledo S.; Peri P.L.; Correa O.S.; Montecchia M.S.; Gargaglione V.; Ladd B. (2022) Structure and function of soil microbial communities in fertile islands in austral drylands. Austral Ecology 47: 663–673.
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Austral Ecology 47 (3) : 663–673. (May 2022)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 12.559606

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