Non-linear dynamics of litter decomposition under different grazing management regimes
Aims: To understand and model the dynamics of litter decomposition in a climatically seasonal region subject to different modalities of land pasture management. Methods: Decomposition was quantified through the litterbag technique. Sampling was performed at monthly intervals on an annual basis wi...
| Autores principales: | , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2018
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/3817 https://link.springer.com/article/10.1007/s11104-015-2472-y https://doi.org/10.1007/s11104-015-2472-y |
| _version_ | 1855483308493766656 |
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| author | Banegas, Natalia Romina Albanesi de Garay, Ada Susana Pedraza, Raúl Osvaldo Dos Santos, Daniel Andrés |
| author_browse | Albanesi de Garay, Ada Susana Banegas, Natalia Romina Dos Santos, Daniel Andrés Pedraza, Raúl Osvaldo |
| author_facet | Banegas, Natalia Romina Albanesi de Garay, Ada Susana Pedraza, Raúl Osvaldo Dos Santos, Daniel Andrés |
| author_sort | Banegas, Natalia Romina |
| collection | INTA Digital |
| description | Aims: To understand and model the dynamics of litter decomposition in a climatically seasonal region subject to different modalities of land pasture management.
Methods:
Decomposition was quantified through the litterbag technique. Sampling was performed at monthly intervals on an annual basis with replications for 2008, 2009 and 2010. Treatments were native vegetation (NV) and grazed (G), grazed and N-fertilized (GF), hayed (H), hayed and N-fertilized (HF) plots. For each combination of treatment and year, a sigmoid model was fitted. Parameters included remnant litter, steepness and inflection of decomposition curve.
Results:
The sigmoid model adjusted excellently well the data. In considering the overall effect on litter decomposition, treatments differ among them as follows symbolically: ((GF > G) > (HF > H)) > > NV. Results are consistent across the yearly replications.
Conclusion:
Pasture management (grazed versus hayed) is the primary factor controlling the rate of decomposition, whereas fertilization has a secondary role. The sigmoid model captures realistically the different phases of decomposition detected over a year, namely stationary at conditions of low temperature (later autumn and winter), accelerated at increasing temperature and humidity (transition from spring to summer) and decelerated when residual organic matter becomes less profitable and weather conditions more stringent (summer and earlier autumn). |
| format | Artículo |
| id | INTA3817 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA38172019-01-04T15:35:25Z Non-linear dynamics of litter decomposition under different grazing management regimes Banegas, Natalia Romina Albanesi de Garay, Ada Susana Pedraza, Raúl Osvaldo Dos Santos, Daniel Andrés Grazing Systems Cattle Nitrogen Sistemas de Pastoreo Ganado Bovino Nitrógeno Chloris Gayana Sigmoid Model Chaco Aims: To understand and model the dynamics of litter decomposition in a climatically seasonal region subject to different modalities of land pasture management. Methods: Decomposition was quantified through the litterbag technique. Sampling was performed at monthly intervals on an annual basis with replications for 2008, 2009 and 2010. Treatments were native vegetation (NV) and grazed (G), grazed and N-fertilized (GF), hayed (H), hayed and N-fertilized (HF) plots. For each combination of treatment and year, a sigmoid model was fitted. Parameters included remnant litter, steepness and inflection of decomposition curve. Results: The sigmoid model adjusted excellently well the data. In considering the overall effect on litter decomposition, treatments differ among them as follows symbolically: ((GF > G) > (HF > H)) > > NV. Results are consistent across the yearly replications. Conclusion: Pasture management (grazed versus hayed) is the primary factor controlling the rate of decomposition, whereas fertilization has a secondary role. The sigmoid model captures realistically the different phases of decomposition detected over a year, namely stationary at conditions of low temperature (later autumn and winter), accelerated at increasing temperature and humidity (transition from spring to summer) and decelerated when residual organic matter becomes less profitable and weather conditions more stringent (summer and earlier autumn). Instituto de Investigación Animal Chaco Semiarido Fil: Banegas, Natalia Romina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido; Argentina. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina Fil: Albanesi de Garay, Ada Susana. Universidad Nacional de Santiago del Estero. Facultad de Agronomía y Agroindustrias; Argentina Fil: Pedraza, Raúl Osvaldo. Universidad Nacional de Tucumán. Facultad de Agronomía y Zootecnia; Argentina Fil: Dos Santos, Daniel Andrés. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Tucuman. Instituto de Biodiversidad Neotropical; Argentina. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo; Argentina 2018-11-07T17:34:11Z 2018-11-07T17:34:11Z 2015-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/3817 https://link.springer.com/article/10.1007/s11104-015-2472-y 0032-079X 1573-5036 (Online) https://doi.org/10.1007/s11104-015-2472-y eng info:eu-repo/semantics/restrictedAccess application/pdf Springer Plant and soil 393 (1–2) : 47–56. (August 2015) |
| spellingShingle | Grazing Systems Cattle Nitrogen Sistemas de Pastoreo Ganado Bovino Nitrógeno Chloris Gayana Sigmoid Model Chaco Banegas, Natalia Romina Albanesi de Garay, Ada Susana Pedraza, Raúl Osvaldo Dos Santos, Daniel Andrés Non-linear dynamics of litter decomposition under different grazing management regimes |
| title | Non-linear dynamics of litter decomposition under different grazing management regimes |
| title_full | Non-linear dynamics of litter decomposition under different grazing management regimes |
| title_fullStr | Non-linear dynamics of litter decomposition under different grazing management regimes |
| title_full_unstemmed | Non-linear dynamics of litter decomposition under different grazing management regimes |
| title_short | Non-linear dynamics of litter decomposition under different grazing management regimes |
| title_sort | non linear dynamics of litter decomposition under different grazing management regimes |
| topic | Grazing Systems Cattle Nitrogen Sistemas de Pastoreo Ganado Bovino Nitrógeno Chloris Gayana Sigmoid Model Chaco |
| url | http://hdl.handle.net/20.500.12123/3817 https://link.springer.com/article/10.1007/s11104-015-2472-y https://doi.org/10.1007/s11104-015-2472-y |
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