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Abstract
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 [ver mas...]
dc.contributor.authorEnriquez, Andrea Soledad
dc.contributor.authorChimner, Rodney Allen
dc.contributor.authorCremona, Maria Victoria
dc.date.accessioned2018-11-09T14:38:06Z
dc.date.available2018-11-09T14:38:06Z
dc.date.issued2014-10
dc.identifier.issn0140-1963
dc.identifier.issn1095-922X
dc.identifier.otherhttps://doi.org/10.1016/j.jaridenv.2014.04.012
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0140196314000998
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3850
dc.description.abstractWet 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 Patagoniaeng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceJournal of Arid Environments 109 : 1-5 (October 2014)es_AR
dc.subjectPrados de Siegaes_AR
dc.subjectMeadowseng
dc.subjectPastoreoes_AR
dc.subjectGrazingeng
dc.subjectSueloes_AR
dc.subjectSoileng
dc.subjectNitrógenoes_AR
dc.subjectNitrogeneng
dc.subjectAmoníacoes_AR
dc.subjectAmmoniaeng
dc.subjectContenido de Agua en el Sueloes_AR
dc.subjectSoil Water Contenteng
dc.subjectSobrepastoreoes_AR
dc.subjectOvergrazingeng
dc.subject.otherMallineses_AR
dc.subject.otherHumedaleses_AR
dc.subject.otherRegión Patagónica
dc.titleLong-term grazing negatively affects nitrogen dynamics in Northern Patagonian wet meadowses_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 Barilochees_AR
dc.description.filFil: Enriquez, Andrea Soledad. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Chimner, Rodney Allen. Michigan Technological University. School of Forest Resources and Environmental Science; Estados Unidoses_AR
dc.description.filFil: Cremona, Maria Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentinaes_AR
dc.subtypecientifico


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