Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows

Autores
Enriquez, Andrea Soledad; Chimner, Rodney Allen; Cremona, Maria Victoria
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Wet meadows are seasonally saturated wetlands that can develop in arid and semi-arid areas. In the semi-arid region of North Patagonia, Argentina wet meadows are islands of high net primary productivity surrounded by low productivity steppe vegetation. Because of this, Patagonian wet meadows have been heavily grazed by livestock for more than a century. It has been shown that overgrazed wet meadows have lower soil carbon, however, little is known about how overgrazing impacts N dynamics. To this end, we measured ammonium (NH4+), nitrate (NO3−), and total nitrogen (Nt) in paired wet meadows that varied in long-term grazing intensity (heavy vs. light). Results indicate that heavily grazed sites had on average 43% less Nt and 57% less NH4+ than lightly grazed sites. Soil NH4+ concentrations were always significantly greater than NO3− concentrations, being the later often below detection levels. In addition, NH4+ concentrations were correlated with soil moisture in lightly grazed sites, but not in heavily grazed sites. These findings indicate that implementation of better management practices are currently needed to promote more sustainable grazing in semi-arid wet meadows of North Patagonia
EEA Bariloche
Fil: Enriquez, Andrea Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Chimner, Rodney Allen. Michigan Technological University. School of Forest Resources and Environmental Science; Estados Unidos
Fil: Cremona, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fuente
Journal of Arid Environments 109 : 1-5 (October 2014)
Materia
Prados de Siega
Pastoreo
Suelo
Nitrógeno
Amoníaco
Contenido de Agua en el Suelo
Sobrepastoreo
Meadows
Grazing
Soil
Nitrogen
Ammonia
Soil Water Content
Overgrazing
Mallines
Humedales
Región Patagónica
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/3850

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oai_identifier_str oai:localhost:20.500.12123/3850
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network_name_str INTA Digital (INTA)
spelling Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadowsEnriquez, Andrea SoledadChimner, Rodney AllenCremona, Maria VictoriaPrados de SiegaPastoreoSueloNitrógenoAmoníacoContenido de Agua en el SueloSobrepastoreoMeadowsGrazingSoilNitrogenAmmoniaSoil Water ContentOvergrazingMallinesHumedalesRegión PatagónicaWet meadows are seasonally saturated wetlands that can develop in arid and semi-arid areas. In the semi-arid region of North Patagonia, Argentina wet meadows are islands of high net primary productivity surrounded by low productivity steppe vegetation. Because of this, Patagonian wet meadows have been heavily grazed by livestock for more than a century. It has been shown that overgrazed wet meadows have lower soil carbon, however, little is known about how overgrazing impacts N dynamics. To this end, we measured ammonium (NH4+), nitrate (NO3−), and total nitrogen (Nt) in paired wet meadows that varied in long-term grazing intensity (heavy vs. light). Results indicate that heavily grazed sites had on average 43% less Nt and 57% less NH4+ than lightly grazed sites. Soil NH4+ concentrations were always significantly greater than NO3− concentrations, being the later often below detection levels. In addition, NH4+ concentrations were correlated with soil moisture in lightly grazed sites, but not in heavily grazed sites. These findings indicate that implementation of better management practices are currently needed to promote more sustainable grazing in semi-arid wet meadows of North PatagoniaEEA BarilocheFil: Enriquez, Andrea Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Chimner, Rodney Allen. Michigan Technological University. School of Forest Resources and Environmental Science; Estados UnidosFil: Cremona, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; ArgentinaElsevier2018-11-09T14:38:06Z2018-11-09T14:38:06Z2014-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://www.sciencedirect.com/science/article/pii/S0140196314000998http://hdl.handle.net/20.500.12123/38500140-19631095-922Xhttps://doi.org/10.1016/j.jaridenv.2014.04.012Journal of Arid Environments 109 : 1-5 (October 2014)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-29T13:44:29Zoai:localhost:20.500.12123/3850instacron: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 13:44:30.073INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
title Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
spellingShingle Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
Enriquez, Andrea Soledad
Prados de Siega
Pastoreo
Suelo
Nitrógeno
Amoníaco
Contenido de Agua en el Suelo
Sobrepastoreo
Meadows
Grazing
Soil
Nitrogen
Ammonia
Soil Water Content
Overgrazing
Mallines
Humedales
Región Patagónica
title_short Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
title_full Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
title_fullStr Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
title_full_unstemmed Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
title_sort Long-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadows
dc.creator.none.fl_str_mv Enriquez, Andrea Soledad
Chimner, Rodney Allen
Cremona, Maria Victoria
author Enriquez, Andrea Soledad
author_facet Enriquez, Andrea Soledad
Chimner, Rodney Allen
Cremona, Maria Victoria
author_role author
author2 Chimner, Rodney Allen
Cremona, Maria Victoria
author2_role author
author
dc.subject.none.fl_str_mv Prados de Siega
Pastoreo
Suelo
Nitrógeno
Amoníaco
Contenido de Agua en el Suelo
Sobrepastoreo
Meadows
Grazing
Soil
Nitrogen
Ammonia
Soil Water Content
Overgrazing
Mallines
Humedales
Región Patagónica
topic Prados de Siega
Pastoreo
Suelo
Nitrógeno
Amoníaco
Contenido de Agua en el Suelo
Sobrepastoreo
Meadows
Grazing
Soil
Nitrogen
Ammonia
Soil Water Content
Overgrazing
Mallines
Humedales
Región Patagónica
dc.description.none.fl_txt_mv Wet meadows are seasonally saturated wetlands that can develop in arid and semi-arid areas. In the semi-arid region of North Patagonia, Argentina wet meadows are islands of high net primary productivity surrounded by low productivity steppe vegetation. Because of this, Patagonian wet meadows have been heavily grazed by livestock for more than a century. It has been shown that overgrazed wet meadows have lower soil carbon, however, little is known about how overgrazing impacts N dynamics. To this end, we measured ammonium (NH4+), nitrate (NO3−), and total nitrogen (Nt) in paired wet meadows that varied in long-term grazing intensity (heavy vs. light). Results indicate that heavily grazed sites had on average 43% less Nt and 57% less NH4+ than lightly grazed sites. Soil NH4+ concentrations were always significantly greater than NO3− concentrations, being the later often below detection levels. In addition, NH4+ concentrations were correlated with soil moisture in lightly grazed sites, but not in heavily grazed sites. These findings indicate that implementation of better management practices are currently needed to promote more sustainable grazing in semi-arid wet meadows of North Patagonia
EEA Bariloche
Fil: Enriquez, Andrea Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Chimner, Rodney Allen. Michigan Technological University. School of Forest Resources and Environmental Science; Estados Unidos
Fil: Cremona, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
description Wet meadows are seasonally saturated wetlands that can develop in arid and semi-arid areas. In the semi-arid region of North Patagonia, Argentina wet meadows are islands of high net primary productivity surrounded by low productivity steppe vegetation. Because of this, Patagonian wet meadows have been heavily grazed by livestock for more than a century. It has been shown that overgrazed wet meadows have lower soil carbon, however, little is known about how overgrazing impacts N dynamics. To this end, we measured ammonium (NH4+), nitrate (NO3−), and total nitrogen (Nt) in paired wet meadows that varied in long-term grazing intensity (heavy vs. light). Results indicate that heavily grazed sites had on average 43% less Nt and 57% less NH4+ than lightly grazed sites. Soil NH4+ concentrations were always significantly greater than NO3− concentrations, being the later often below detection levels. In addition, NH4+ concentrations were correlated with soil moisture in lightly grazed sites, but not in heavily grazed sites. These findings indicate that implementation of better management practices are currently needed to promote more sustainable grazing in semi-arid wet meadows of North Patagonia
publishDate 2014
dc.date.none.fl_str_mv 2014-10
2018-11-09T14:38:06Z
2018-11-09T14:38:06Z
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 https://www.sciencedirect.com/science/article/pii/S0140196314000998
http://hdl.handle.net/20.500.12123/3850
0140-1963
1095-922X
https://doi.org/10.1016/j.jaridenv.2014.04.012
url https://www.sciencedirect.com/science/article/pii/S0140196314000998
http://hdl.handle.net/20.500.12123/3850
https://doi.org/10.1016/j.jaridenv.2014.04.012
identifier_str_mv 0140-1963
1095-922X
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 109 : 1-5 (October 2014)
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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