How does grazing affect soil water availability in the Patagonian steppe?

Autores
Golluscio, Rodolfo Ángel; Garcia Martinez, Guillermo Carlos; Cavagnaro, Fernando Pablo
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects would be most evident in the bare soil spaces, with higher evaporative losses and lower root density than vegetated microsites. Therefore, we analyzed the proportion of four microsites (shrubs, bare soil, preferred- and unpreferred grasses), and their soil water availability at 0–5 and 5–15 cm depth in four sampling areas, each one with an ungrazed, a moderately- and an intensely-grazed site. Our results supported the initial hypothesis: bare soil microsites had the lowest surface, but the highest subsurface water availability. However, grazing did not cause any change in the mean soil water availability (net effect) because it did not affect soil water availability in any microsite and depth (direct effects), and only caused a replacement of preferred-by unpreferred grasses (indirect effects), two groups that induced small differences in water availability.
EEA Esquel
Fil: Golluscio, Rodolfo Ángel. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
Fil: Golluscio, Rodolfo Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Golluscio, Rodolfo Ángel. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a La Agricultura (IFEVA); Argentina
Fil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina
Fil: Cavagnaro, Fernando Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
Fuente
Journal of Arid Environments 205 : 104800. (October 2022)
Materia
Desertificación
Pastoreo
Evaporación
Transpiración
Disponibilidad del Agua
Características del Sitio
Estepas
Desertification
Grazing
Evaporation
Transpiration
Water Availability
Site Factors
Steppes
Región Patagónica
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/12021
Acceder
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oai_identifier_str oai:localhost:20.500.12123/12021
network_acronym_str INTADig
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network_name_str INTA Digital (INTA)
spelling How does grazing affect soil water availability in the Patagonian steppe?Golluscio, Rodolfo ÁngelGarcia Martinez, Guillermo CarlosCavagnaro, Fernando PabloDesertificaciónPastoreoEvaporaciónTranspiraciónDisponibilidad del AguaCaracterísticas del SitioEstepasDesertificationGrazingEvaporationTranspirationWater AvailabilitySite FactorsSteppesRegión PatagónicaIn the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects would be most evident in the bare soil spaces, with higher evaporative losses and lower root density than vegetated microsites. Therefore, we analyzed the proportion of four microsites (shrubs, bare soil, preferred- and unpreferred grasses), and their soil water availability at 0–5 and 5–15 cm depth in four sampling areas, each one with an ungrazed, a moderately- and an intensely-grazed site. Our results supported the initial hypothesis: bare soil microsites had the lowest surface, but the highest subsurface water availability. However, grazing did not cause any change in the mean soil water availability (net effect) because it did not affect soil water availability in any microsite and depth (direct effects), and only caused a replacement of preferred-by unpreferred grasses (indirect effects), two groups that induced small differences in water availability.EEA EsquelFil: Golluscio, Rodolfo Ángel. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; ArgentinaFil: Golluscio, Rodolfo Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Golluscio, Rodolfo Ángel. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a La Agricultura (IFEVA); ArgentinaFil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; ArgentinaFil: Cavagnaro, Fernando Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; ArgentinaElsevier2022-06-06T10:56:14Z2022-06-06T10:56:14Z2022-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/12021https://www.sciencedirect.com/science/article/pii/S01401963220009570140-1963https://doi.org/10.1016/j.jaridenv.2022.104800Journal of Arid Environments 205 : 104800. (October 2022)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-11T10:24:11Zoai:localhost:20.500.12123/12021instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-11 10:24:11.66INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv How does grazing affect soil water availability in the Patagonian steppe?
title How does grazing affect soil water availability in the Patagonian steppe?
spellingShingle How does grazing affect soil water availability in the Patagonian steppe?
Golluscio, Rodolfo Ángel
Desertificación
Pastoreo
Evaporación
Transpiración
Disponibilidad del Agua
Características del Sitio
Estepas
Desertification
Grazing
Evaporation
Transpiration
Water Availability
Site Factors
Steppes
Región Patagónica
title_short How does grazing affect soil water availability in the Patagonian steppe?
title_full How does grazing affect soil water availability in the Patagonian steppe?
title_fullStr How does grazing affect soil water availability in the Patagonian steppe?
title_full_unstemmed How does grazing affect soil water availability in the Patagonian steppe?
title_sort How does grazing affect soil water availability in the Patagonian steppe?
dc.creator.none.fl_str_mv Golluscio, Rodolfo Ángel
Garcia Martinez, Guillermo Carlos
Cavagnaro, Fernando Pablo
author Golluscio, Rodolfo Ángel
author_facet Golluscio, Rodolfo Ángel
Garcia Martinez, Guillermo Carlos
Cavagnaro, Fernando Pablo
author_role author
author2 Garcia Martinez, Guillermo Carlos
Cavagnaro, Fernando Pablo
author2_role author
author
dc.subject.none.fl_str_mv Desertificación
Pastoreo
Evaporación
Transpiración
Disponibilidad del Agua
Características del Sitio
Estepas
Desertification
Grazing
Evaporation
Transpiration
Water Availability
Site Factors
Steppes
Región Patagónica
topic Desertificación
Pastoreo
Evaporación
Transpiración
Disponibilidad del Agua
Características del Sitio
Estepas
Desertification
Grazing
Evaporation
Transpiration
Water Availability
Site Factors
Steppes
Región Patagónica
dc.description.none.fl_txt_mv In the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects would be most evident in the bare soil spaces, with higher evaporative losses and lower root density than vegetated microsites. Therefore, we analyzed the proportion of four microsites (shrubs, bare soil, preferred- and unpreferred grasses), and their soil water availability at 0–5 and 5–15 cm depth in four sampling areas, each one with an ungrazed, a moderately- and an intensely-grazed site. Our results supported the initial hypothesis: bare soil microsites had the lowest surface, but the highest subsurface water availability. However, grazing did not cause any change in the mean soil water availability (net effect) because it did not affect soil water availability in any microsite and depth (direct effects), and only caused a replacement of preferred-by unpreferred grasses (indirect effects), two groups that induced small differences in water availability.
EEA Esquel
Fil: Golluscio, Rodolfo Ángel. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
Fil: Golluscio, Rodolfo Ángel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Golluscio, Rodolfo Ángel. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a La Agricultura (IFEVA); Argentina
Fil: García Martínez, Guillermo Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentina
Fil: Cavagnaro, Fernando Pablo. Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Forrajicultura; Argentina
description In the Patagonian steppe, grazing may or may not reduce soil water availability: it may increase evaporative losses, because it reduces plant cover, but may decrease transpiration losses because it decreases plant biomass. Therefore, grazing could reduce soil water availability in the superficial layer, mostly affected by evaporation, but could increase it in the subsurface layers, mostly affected by transpiration. Our hypothesis is that such effects would be most evident in the bare soil spaces, with higher evaporative losses and lower root density than vegetated microsites. Therefore, we analyzed the proportion of four microsites (shrubs, bare soil, preferred- and unpreferred grasses), and their soil water availability at 0–5 and 5–15 cm depth in four sampling areas, each one with an ungrazed, a moderately- and an intensely-grazed site. Our results supported the initial hypothesis: bare soil microsites had the lowest surface, but the highest subsurface water availability. However, grazing did not cause any change in the mean soil water availability (net effect) because it did not affect soil water availability in any microsite and depth (direct effects), and only caused a replacement of preferred-by unpreferred grasses (indirect effects), two groups that induced small differences in water availability.
publishDate 2022
dc.date.none.fl_str_mv 2022-06-06T10:56:14Z
2022-06-06T10:56:14Z
2022-06-01
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/20.500.12123/12021
https://www.sciencedirect.com/science/article/pii/S0140196322000957
0140-1963
https://doi.org/10.1016/j.jaridenv.2022.104800
url http://hdl.handle.net/20.500.12123/12021
https://www.sciencedirect.com/science/article/pii/S0140196322000957
https://doi.org/10.1016/j.jaridenv.2022.104800
identifier_str_mv 0140-1963
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 Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Journal of Arid Environments 205 : 104800. (October 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 12.993085

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