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Piazza, M. V.; Oñatibia, G. R.; Aguiar, M. R.; & Chaneton, E. J. (2021)"Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes". Plant and Soil,467, (no.1-2),p.483-497

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Artículo
Título en inglés:
Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes
Autor/es:
Piazza, María Victoria; Oñatibia, Gastón R.; Aguiar, Martín Roberto; Chaneton, Enrique José
Filiación:
Piazza, María Victoria. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Piazza, María Victoria. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Piazza, María Victoria. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Dasonomía. Buenos Aires, Argentina.
Oñatibia, Gastón R. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Oñatibia, Gastón R. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Aguiar, Martín Roberto. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Aguiar, Martín Roberto. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Chaneton, Enrique José. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Chaneton, Enrique José. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Año:
2021
Título revista:
Plant and Soil
ISSN:
1573-5036 (online); 0032-079X (impreso)
Volumen:
467
Número:
no.1-2
Páginas:
483-497
Temas:
ECOSYSTEM FUNCTIONING; GRAZING INTENSIFICATION; LITTER TRAITS; PATAGONIAN ARID STEPPE
Idioma:
Inglés
URL al Editor:

Resumen:

Aims Soil processes in arid ecosystems are strongly controlled by resource scarcity. Grazing intensificationcan induce changes in ecosystem processes throughmultiple pathways, adding new constraints to those oflocal conditions. We focus on grazing-induced changes in litter traits and soil environment that may affect litter decomposition and N dynamics in temperate grassshrub steppes. Methods We performed three litterbag decomposition experiments to evaluate: i) the effect of litter traits in a common garden (ex situ), ii) the effect of soil environment using a foreign common litter substrate (in situ), and iii) the interactive effects of litter traits and soil environment (grazed vs. exclosure communities, reciprocal transplants in situ). Field experiments were replicated in three blocks with paired plots under a long-term exclosure (> 25 years) and under year-round sheep grazing. Local litter included mixtures of species of grasses and shrubs, separately. Results Grazing exclusion did not alter litter decomposition rates, either through changes in litter traits or in soil environment. Nevertheless, N released during grass litter decomposition was 286% higher in exclosures than in grazing communities. The difference was associated to changes in litter C:N ratio. The effects were maintained when results were integrated to the entire litter community. Conclusion Our study suggests that litter decomposition rates in arid steppes are strongly controlled by local drivers. Ungulate grazing does not have an important influence on litter mass loss, but it can exert a strong control on N flux during decomposition, by changing grass litter traits.

Citación:

---------- APA ----------

Piazza, M. V.; Oñatibia, G. R.; Aguiar, M. R.; & Chaneton, E. J. (2021). Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes. Plant and Soil,467, (no.1-2),p.483-497
10.1007/s11104-021-05088-4

---------- CHICAGO ----------

Piazza, María Victoria, Oñatibia, Gastón R., Aguiar, Martín Roberto, Chaneton, Enrique José. 2021. "Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes". Plant and Soil 467, no.no.1-2:483-497.
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