Patchiness of grass mycorrhizal colonization in the Patagonian steppe

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In arid and semi-arid ecosystems vegetation is often arranged in high-density patches imbedded in an extensive matrix dominated by bare soil. This study explores the importance of vegetation pattern in the relationship between grasses and arbuscular mycorrhizal fungi (AMF). In shrub-dominated and ba...

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Autores principales:	Cavagnaro, R.A., Ripoll, M.P., Godeas, A., Oesterheld, M., Grimoldi, A.A.
Formato:	JOUR
Materias:	Arbuscular mycorrhizal fungi (AMF) Fertility hotspot Grazing Patch structure Symbiosis Tussock grasses arbuscular mycorrhiza bare soil bioactivity colonization fungus grass grazing patchiness shrub steppe symbiosis vegetation structure Patagonia Bromus pictus Fungi Poa ligularis Poaceae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01401963_v137_n_p46_Cavagnaro
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01401963_v137_n_p46_Cavagnaro
record_format	dspace
spelling	todo:paper_01401963_v137_n_p46_Cavagnaro2023-10-03T14:58:14Z Patchiness of grass mycorrhizal colonization in the Patagonian steppe Cavagnaro, R.A. Ripoll, M.P. Godeas, A. Oesterheld, M. Grimoldi, A.A. Arbuscular mycorrhizal fungi (AMF) Fertility hotspot Grazing Patch structure Symbiosis Tussock grasses arbuscular mycorrhiza bare soil bioactivity colonization fungus grass grazing patchiness shrub steppe symbiosis vegetation structure Patagonia Bromus pictus Fungi Poa ligularis Poaceae In arid and semi-arid ecosystems vegetation is often arranged in high-density patches imbedded in an extensive matrix dominated by bare soil. This study explores the importance of vegetation pattern in the relationship between grasses and arbuscular mycorrhizal fungi (AMF). In shrub-dominated and bare-soil dominated patches of the Patagonian steppe, we quantified AMF colonization in the dominant grasses Bromus pictus, Poa ligularis, Pappostipa speciosa and Pappostipa humilis. Additionally, in the shrub-dominated patches, AMF colonization was measured in roots under the shrub canopy and off the shrub canopy. Soils in each patch type were also characterized. B. pictus showed the highest AMF colonization, followed by P. speciosa, P. humilis and P. ligularis. The shrub patch resulted to be a fertility hotspot for biological activity and soil attributes. Grass plants in the shrub patches showed in general the highest rates of AMF colonization. Conversely, we did not find consistent differences between the two types of microsites within the shrub patch. Shrub patches may be functioning as refuges for biological activity that preserve the occurrence of mycorrhizal symbiosis of grass species and alter nutrient dynamics. © 2016 Elsevier Ltd Fil:Godeas, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01401963_v137_n_p46_Cavagnaro
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Arbuscular mycorrhizal fungi (AMF) Fertility hotspot Grazing Patch structure Symbiosis Tussock grasses arbuscular mycorrhiza bare soil bioactivity colonization fungus grass grazing patchiness shrub steppe symbiosis vegetation structure Patagonia Bromus pictus Fungi Poa ligularis Poaceae
spellingShingle	Arbuscular mycorrhizal fungi (AMF) Fertility hotspot Grazing Patch structure Symbiosis Tussock grasses arbuscular mycorrhiza bare soil bioactivity colonization fungus grass grazing patchiness shrub steppe symbiosis vegetation structure Patagonia Bromus pictus Fungi Poa ligularis Poaceae Cavagnaro, R.A. Ripoll, M.P. Godeas, A. Oesterheld, M. Grimoldi, A.A. Patchiness of grass mycorrhizal colonization in the Patagonian steppe
topic_facet	Arbuscular mycorrhizal fungi (AMF) Fertility hotspot Grazing Patch structure Symbiosis Tussock grasses arbuscular mycorrhiza bare soil bioactivity colonization fungus grass grazing patchiness shrub steppe symbiosis vegetation structure Patagonia Bromus pictus Fungi Poa ligularis Poaceae
description	In arid and semi-arid ecosystems vegetation is often arranged in high-density patches imbedded in an extensive matrix dominated by bare soil. This study explores the importance of vegetation pattern in the relationship between grasses and arbuscular mycorrhizal fungi (AMF). In shrub-dominated and bare-soil dominated patches of the Patagonian steppe, we quantified AMF colonization in the dominant grasses Bromus pictus, Poa ligularis, Pappostipa speciosa and Pappostipa humilis. Additionally, in the shrub-dominated patches, AMF colonization was measured in roots under the shrub canopy and off the shrub canopy. Soils in each patch type were also characterized. B. pictus showed the highest AMF colonization, followed by P. speciosa, P. humilis and P. ligularis. The shrub patch resulted to be a fertility hotspot for biological activity and soil attributes. Grass plants in the shrub patches showed in general the highest rates of AMF colonization. Conversely, we did not find consistent differences between the two types of microsites within the shrub patch. Shrub patches may be functioning as refuges for biological activity that preserve the occurrence of mycorrhizal symbiosis of grass species and alter nutrient dynamics. © 2016 Elsevier Ltd
format	JOUR
author	Cavagnaro, R.A. Ripoll, M.P. Godeas, A. Oesterheld, M. Grimoldi, A.A.
author_facet	Cavagnaro, R.A. Ripoll, M.P. Godeas, A. Oesterheld, M. Grimoldi, A.A.
author_sort	Cavagnaro, R.A.
title	Patchiness of grass mycorrhizal colonization in the Patagonian steppe
title_short	Patchiness of grass mycorrhizal colonization in the Patagonian steppe
title_full	Patchiness of grass mycorrhizal colonization in the Patagonian steppe
title_fullStr	Patchiness of grass mycorrhizal colonization in the Patagonian steppe
title_full_unstemmed	Patchiness of grass mycorrhizal colonization in the Patagonian steppe
title_sort	patchiness of grass mycorrhizal colonization in the patagonian steppe
url	http://hdl.handle.net/20.500.12110/paper_01401963_v137_n_p46_Cavagnaro
work_keys_str_mv	AT cavagnarora patchinessofgrassmycorrhizalcolonizationinthepatagoniansteppe AT ripollmp patchinessofgrassmycorrhizalcolonizationinthepatagoniansteppe AT godeasa patchinessofgrassmycorrhizalcolonizationinthepatagoniansteppe AT oesterheldm patchinessofgrassmycorrhizalcolonizationinthepatagoniansteppe AT grimoldiaa patchinessofgrassmycorrhizalcolonizationinthepatagoniansteppe
_version_	1807322459381170176

Patchiness of grass mycorrhizal colonization in the Patagonian steppe

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