Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems
Different land use systems can alter the structure and function of soil microorganisms, affecting microbialmediated processes and potentially undermining consequences for soil fertility and ecosystem health. The effects of land use types (LUTs) on soil microbial attributes remain poorly understood i...
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2025
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| Online Access: | http://hdl.handle.net/20.500.12123/23525 https://www.sciencedirect.com/science/article/pii/S305064172500028X https://doi.org/10.1016/j.temicr.2025.100028 |
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| author | Toledo, Santiago Martínez Pastur, Guillermo José Rodríguez‑Souilla, Julián Peri, Pablo Luis |
| author_browse | Martínez Pastur, Guillermo José Peri, Pablo Luis Rodríguez‑Souilla, Julián Toledo, Santiago |
| author_facet | Toledo, Santiago Martínez Pastur, Guillermo José Rodríguez‑Souilla, Julián Peri, Pablo Luis |
| author_sort | Toledo, Santiago |
| collection | INTA Digital |
| description | Different land use systems can alter the structure and function of soil microorganisms, affecting microbialmediated processes and potentially undermining consequences for soil fertility and ecosystem health. The effects of land use types (LUTs) on soil microbial attributes remain poorly understood in ecosystems. Therefore, the objectives were: (i) to evaluate the responses of microbial biomass carbon (MBC) and nitrogen (MBN), MBC: MBN, soil basal respiration (SBR), microbial metabolic quotient (qCO2), and microbial quotient (qMC) to different LUTs, including primary forests (PF), silvopastoral systems (SPS) and grasslands, across an environmental gradient from coastal to inland sites of Southern Patagonia; and (ii) to assess the influence of Nothofagus antarctica tree canopies (canopy vs inter-canopy) on these microbial attributes. SPS maintained similar values of MBC, MBC:MBN, and qMC compared to PF, but with significant increasing SBR (40%) and qCO2 (55%) values. Grasslands decreased MBN (71 mg kg− 1), SBR (44 mg C kg− 1), and qCO2, but increased the MBC:MBN compared with PF. Inland sites at higher altitudes showed reductions in MBC (45%), MBN (28%), and MBC:MBN, and increases in qCO2 (77%) compared to inland and coastal areas at lower altitudes. Moreover, microbial variables (MBC, MBN, SBR, qCO2, and qMC) were consistently higher under tree canopies than in inter-canopy areas. These findings highlight the importance of conserving forest stands under SPS use to sustain soil microbial functions. Soil microbial attributes could serve as sensitive and effective bioindicators of soil quality and health, offering valuable tools for land use monitoring in ecosystems. |
| format | Artículo |
| id | INTA23525 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA235252025-08-22T11:31:51Z Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems Toledo, Santiago Martínez Pastur, Guillermo José Rodríguez‑Souilla, Julián Peri, Pablo Luis Soil Microorganisms Land Use Nitrogen Soil Respiration Primary Forests Silvopastoral Systems Pastures Indicator Organisms Monitoring and Evaluation Microorganismos del Suelo Uso de la Tierra Nitrógeno Respiración del Suelo Bosques Primarios Sistemas Silvopastoriles Pastizales Nothofagus Organismos Indicadores Seguimiento y Evaluación Tierra del Fuego Soil Microbial Attributes Microbial Biomass Carbon Microbial Metabolic Microbial Metabolic Quotient Microbial Quotient Bioindicators Monitoring in Ecosystems Atributos Microbianos del Suelo Carbono de la Biomasa Microbiana Cociente Metabólico Microbiano Cociente Microbiano Nothofagus antarctica Ñire Bioindicadores Monitoreo en Ecosistemas Región Patagónica Different land use systems can alter the structure and function of soil microorganisms, affecting microbialmediated processes and potentially undermining consequences for soil fertility and ecosystem health. The effects of land use types (LUTs) on soil microbial attributes remain poorly understood in ecosystems. Therefore, the objectives were: (i) to evaluate the responses of microbial biomass carbon (MBC) and nitrogen (MBN), MBC: MBN, soil basal respiration (SBR), microbial metabolic quotient (qCO2), and microbial quotient (qMC) to different LUTs, including primary forests (PF), silvopastoral systems (SPS) and grasslands, across an environmental gradient from coastal to inland sites of Southern Patagonia; and (ii) to assess the influence of Nothofagus antarctica tree canopies (canopy vs inter-canopy) on these microbial attributes. SPS maintained similar values of MBC, MBC:MBN, and qMC compared to PF, but with significant increasing SBR (40%) and qCO2 (55%) values. Grasslands decreased MBN (71 mg kg− 1), SBR (44 mg C kg− 1), and qCO2, but increased the MBC:MBN compared with PF. Inland sites at higher altitudes showed reductions in MBC (45%), MBN (28%), and MBC:MBN, and increases in qCO2 (77%) compared to inland and coastal areas at lower altitudes. Moreover, microbial variables (MBC, MBN, SBR, qCO2, and qMC) were consistently higher under tree canopies than in inter-canopy areas. These findings highlight the importance of conserving forest stands under SPS use to sustain soil microbial functions. Soil microbial attributes could serve as sensitive and effective bioindicators of soil quality and health, offering valuable tools for land use monitoring in ecosystems. EEA Santa Cruz, INTA Fil: Toledo, Santiago: Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); Argentina. Fil: Rodríguez‑Souilla, Julián. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas (CADIC); 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. 2025-08-22T11:18:45Z 2025-08-22T11:18:45Z 2025-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/23525 https://www.sciencedirect.com/science/article/pii/S305064172500028X Toledo S.; Martínez Pastur G.; Rodríguez-Souilla J.; Peri P.L. (2025) Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems. Total Environment Microbiology 1: 100028. https://doi.org/10.1016/j.temicr.2025.100028 3050-6417 https://doi.org/10.1016/j.temicr.2025.100028 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Total Environment Microbiology 1 (3) : 100028 (September 2025) |
| spellingShingle | Soil Microorganisms Land Use Nitrogen Soil Respiration Primary Forests Silvopastoral Systems Pastures Indicator Organisms Monitoring and Evaluation Microorganismos del Suelo Uso de la Tierra Nitrógeno Respiración del Suelo Bosques Primarios Sistemas Silvopastoriles Pastizales Nothofagus Organismos Indicadores Seguimiento y Evaluación Tierra del Fuego Soil Microbial Attributes Microbial Biomass Carbon Microbial Metabolic Microbial Metabolic Quotient Microbial Quotient Bioindicators Monitoring in Ecosystems Atributos Microbianos del Suelo Carbono de la Biomasa Microbiana Cociente Metabólico Microbiano Cociente Microbiano Nothofagus antarctica Ñire Bioindicadores Monitoreo en Ecosistemas Región Patagónica Toledo, Santiago Martínez Pastur, Guillermo José Rodríguez‑Souilla, Julián Peri, Pablo Luis Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title | Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title_full | Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title_fullStr | Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title_full_unstemmed | Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title_short | Effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in Austral ecosystems |
| title_sort | effects of land use types and spatial heterogeneity on soil microbial biomass and activity along environmental gradients in austral ecosystems |
| topic | Soil Microorganisms Land Use Nitrogen Soil Respiration Primary Forests Silvopastoral Systems Pastures Indicator Organisms Monitoring and Evaluation Microorganismos del Suelo Uso de la Tierra Nitrógeno Respiración del Suelo Bosques Primarios Sistemas Silvopastoriles Pastizales Nothofagus Organismos Indicadores Seguimiento y Evaluación Tierra del Fuego Soil Microbial Attributes Microbial Biomass Carbon Microbial Metabolic Microbial Metabolic Quotient Microbial Quotient Bioindicators Monitoring in Ecosystems Atributos Microbianos del Suelo Carbono de la Biomasa Microbiana Cociente Metabólico Microbiano Cociente Microbiano Nothofagus antarctica Ñire Bioindicadores Monitoreo en Ecosistemas Región Patagónica |
| url | http://hdl.handle.net/20.500.12123/23525 https://www.sciencedirect.com/science/article/pii/S305064172500028X https://doi.org/10.1016/j.temicr.2025.100028 |
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