Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes
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 environmen...
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| Otros Autores: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2021piazza.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 022 | |a 1573-5036 (on line) | ||
| 022 | |a 0032-079X (impreso) | ||
| 024 | |a 10.1007/s11104-021-05088-4 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 245 | 1 | |a Long - term impact of domestic ungulates versu the local controls of the litter decomposition process in arid steppes | |
| 520 | |a 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. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a ECOSYSTEM FUNCTIONING | ||
| 653 | |a GRAZING INTENSIFICATION | ||
| 653 | |a LITTER TRAITS | ||
| 653 | |a PATAGONIAN ARID STEPPE | ||
| 700 | 1 | |a Piazza, María Victoria |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Dasonomía. Buenos Aires, Argentina. |9 21179 | |
| 700 | 1 | |a Oñatibia, Gastón R. |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |9 33451 | |
| 700 | 1 | |a Aguiar, Martín Roberto |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |9 12939 | |
| 700 | 1 | |a Chaneton, Enrique José |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |9 6467 | |
| 773 | 0 | |t Plant and soil |w (AR-BaUFA)SECS000147 |g Vol.467, no.1-2(2021), p.483-497, grafs., tbls., fot. | |
| 856 | |f 2021piazza |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2021piazza.pdf |x ARTI202210 | ||
| 856 | |u https://www.springer.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||