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Abstract
Arbuscular mycorrhizal (AM) fungi play a major role in maintaining ecosystem functions. AM fungi are found in most ecosystems including rangelands currently under increasing pressures from human activities. Southern Patagonia (Argentina) is a semiarid region influenced by extensive livestock production in rangelands. There is a lack of information about the environmental conditions and functionality of AM fungi in plant species of Patagonia ecosystems [ver mas...]
dc.contributor.authorToledo, Santiago
dc.contributor.authorPeri, Pablo Luis
dc.contributor.authorFontenla, Sonia Beatriz
dc.date.accessioned2022-02-14T12:47:48Z
dc.date.available2022-02-14T12:47:48Z
dc.date.issued2022-03
dc.identifier.citationSantiago Toledo, Pablo L. Peri, Sonia B. Fontenla, Environmental Conditions and Grazing Exerted Effects on Arbuscular Mycorrhizal in Plants at Southern Patagonia Rangelands, Rangeland Ecology & Management, Volume 81, 2022, Pages 44-54, ISSN 1550-7424, https://doi.org/10.1016/j.rama.2021.11.005.es_AR
dc.identifier.issn1550-7424
dc.identifier.otherhttps://doi.org/10.1016/j.rama.2021.11.005
dc.identifier.urihttp://hdl.handle.net/20.500.12123/11138
dc.identifier.urihttps://www.sciencedirect.com/science/article/abs/pii/S155074242100124X
dc.description.abstractArbuscular mycorrhizal (AM) fungi play a major role in maintaining ecosystem functions. AM fungi are found in most ecosystems including rangelands currently under increasing pressures from human activities. Southern Patagonia (Argentina) is a semiarid region influenced by extensive livestock production in rangelands. There is a lack of information about the environmental conditions and functionality of AM fungi in plant species of Patagonia ecosystems associated with livestock grazing. We assessed how soil properties, climatic conditions, and grazing intensities influence the response of AM fungi colonization. We studied most palatable and representative plant species (Poa dusenii, Rytidosperma virescens, Festuca gracillima, Nardophylum bryoides, Mulguraea tridens, and Carex argentina) growing in main ecological areas of Southern Patagonia. Most of the studied plant species (except C. argentina) presented AM symbiosis. AM colonization showed a negative relationship with soil organic carbon and nitrogen and a positive relationship with soil bulk density and pH. Results suggest that plants promoted a higher root AM colonization when soil nutrients and water availability (rainfall) are limiting. Sheep stocking rates had a differential impact depending on the ecological areas and plant life forms. High grazing decreased the AM colonization in the ecological areas with palatable plant dominance, suggesting that the impacts of grazing could lead to further negative effects on the ecosystem. Moderate grazing allows to maintain higher AM colonization, which would probably benefit the aboveground production of palatable plant and, consequently, to herbivores, particularly in degraded rangelands like Patagonian steppes. This study improves the knowledge of AM association in Patagonian semiarid rangelands by increasing our understanding of the impacts of grazing on belowground ecology. This information becomes relevant for grazing sustainable management, which may contribute to food security.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceRangeland Ecology & Management 81 : 44-54. (March 2022)es_AR
dc.subjectGrasslandseng
dc.subjectPraderases_AR
dc.subjectDrylandseng
dc.subjectTierras de Secanoes_AR
dc.subjectLivestockeng
dc.subjectGanadoes_AR
dc.subjectSoileng
dc.subjectSueloes_AR
dc.subjectSymbiosiseng
dc.subjectSimbiosises_AR
dc.subjectArbuscular Mycorrhizaeng
dc.subjectMicorrizas Arbusculareses_AR
dc.subjectGrazingeng
dc.subjectPastoreoes_AR
dc.subject.otherPoa duseniies_AR
dc.subject.otherRytidosperma virescenses_AR
dc.subject.otherFestuca gracillimaes_AR
dc.subject.otherNardophylum bryoideses_AR
dc.subject.otherMulguraea tridenses_AR
dc.subject.otherCarex argentinaes_AR
dc.subject.otherRegión Patagónicaes_AR
dc.titleEnvironmental Conditions and Grazing Exerted Effects on Arbuscular Mycorrhizal in Plants at Southern Patagonia Rangelandses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Santa Cruzes_AR
dc.description.filFil: Toledo, Santiago. Universidad Nacional de la Patagonia Austral; Argentina.es_AR
dc.description.filFil: Toledo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. CIT Santa Cruz; Argentina.es_AR
dc.description.filFil: Toledo, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.es_AR
dc.description.filFil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina.es_AR
dc.description.filFil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral; Argentina.es_AR
dc.description.filFil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.es_AR
dc.description.filFil: Fontenla, Sonia B. Universidad Nacional del Comahue. Laboratorio de Biotecnología y Microbiologia Aplicad; Argentina.es_AR
dc.subtypecientifico


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