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
.jpg)
- Institución
- Instituto Nacional de Tecnología Agropecuaria
- OAI Identificador
- oai:localhost:20.500.12123/3850
Ver los metadatos del registro completo
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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/restrictedAccess2025-10-16T09:29:21Zoai: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:l2025-10-16 09:29:22.309INTA 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 |
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0140-1963 1095-922X |
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eng |
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eng |
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application/pdf |
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Elsevier |
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Elsevier |
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Journal of Arid Environments 109 : 1-5 (October 2014) reponame:INTA Digital (INTA) instname:Instituto Nacional de Tecnología Agropecuaria |
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INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria |
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tripaldi.nicolas@inta.gob.ar |
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