Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability
Absorbed solar radiation and radiation use efficiency (RUE) can be used to estimate net primary productivity of terrestrial ecosystems. In ecosystems dominated by grasses, belowground productivity cannot be neglected in terms of carbon balance because of the high proportion of biomass allocated to r...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Wiley; Japanese Society of Grassland Science
2019
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| Online Access: | http://hdl.handle.net/20.500.12123/4776 https://onlinelibrary.wiley.com/doi/full/10.1111/grs.12086 https://doi.org/10.1111/grs.12086 |
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| author | Cristiano, Piedad María Posse Beaulieu, Gabriela Di Bella, Carlos Marcelo |
| author_browse | Cristiano, Piedad María Di Bella, Carlos Marcelo Posse Beaulieu, Gabriela |
| author_facet | Cristiano, Piedad María Posse Beaulieu, Gabriela Di Bella, Carlos Marcelo |
| author_sort | Cristiano, Piedad María |
| collection | INTA Digital |
| description | Absorbed solar radiation and radiation use efficiency (RUE) can be used to estimate net primary productivity of terrestrial ecosystems. In ecosystems dominated by grasses, belowground productivity cannot be neglected in terms of carbon balance because of the high proportion of biomass allocated to roots. The objective of this study was to quantify total RUE (tRUE), which includes both below and aboveground biomass of two C3 (Lolium perenne and Dactylis glomerata) and one C4 (Cynodon dactylon) grass species, under four treatments with contrasting water and nitrogen availabilities. The ratios between tRUE and aboveground RUE (aRUE) for species and treatments were analyzed. The tRUE was calculated from measurements of incoming photosynthetically active radiation (PAR), the fraction of PAR intercepted and shoots and roots productivity in pot experiments. The highest tRUE values in the three species were found in the treatment without growth limitations (4.32–6.93 g MJ−1), while the lowest tRUE values were observed under water and nutrient deficits conditions (2.62–2.85 g MJ−1). Contrary to predictions from the optimization theory, one of the C3 grass species allocated relatively high biomass to the roots when water availability was high while for the C4 grass species the shoot:root ratios and the root mass fraction did not change under resource limitation conditions compared to ample resource availability. tRUE exhibited small changes in the C4 species with variations in resource availability while it did decrease substantially for the C3 species when at least one of the resources was limited. These results highlight belowground biomass importance in calculating RUE of grasses. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4776 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley; Japanese Society of Grassland Science |
| publisherStr | Wiley; Japanese Society of Grassland Science |
| record_format | dspace |
| spelling | INTA47762019-03-28T16:57:47Z Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability Cristiano, Piedad María Posse Beaulieu, Gabriela Di Bella, Carlos Marcelo Gramíneas Forrajeras Eficacia en el Uso Radiación Disponibilidad del Agua Nitrógeno Cynodon Dactylon Dactylis Glomerata Praderas Lolium Perenne Raíces Feed Grasses Use Efficiency Radiation Water Availability Nitrogen Grasslands Roots Absorbed solar radiation and radiation use efficiency (RUE) can be used to estimate net primary productivity of terrestrial ecosystems. In ecosystems dominated by grasses, belowground productivity cannot be neglected in terms of carbon balance because of the high proportion of biomass allocated to roots. The objective of this study was to quantify total RUE (tRUE), which includes both below and aboveground biomass of two C3 (Lolium perenne and Dactylis glomerata) and one C4 (Cynodon dactylon) grass species, under four treatments with contrasting water and nitrogen availabilities. The ratios between tRUE and aboveground RUE (aRUE) for species and treatments were analyzed. The tRUE was calculated from measurements of incoming photosynthetically active radiation (PAR), the fraction of PAR intercepted and shoots and roots productivity in pot experiments. The highest tRUE values in the three species were found in the treatment without growth limitations (4.32–6.93 g MJ−1), while the lowest tRUE values were observed under water and nutrient deficits conditions (2.62–2.85 g MJ−1). Contrary to predictions from the optimization theory, one of the C3 grass species allocated relatively high biomass to the roots when water availability was high while for the C4 grass species the shoot:root ratios and the root mass fraction did not change under resource limitation conditions compared to ample resource availability. tRUE exhibited small changes in the C4 species with variations in resource availability while it did decrease substantially for the C3 species when at least one of the resources was limited. These results highlight belowground biomass importance in calculating RUE of grasses. Instituto de Clima y Agua Fil: Cristiano, Piedad María. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución. Laboratorio de Ecología Funcional; Argentina Fil: Posse Beaulieu, Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina Fil: Di Bella, Carlos Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Clima y Agua; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina 2019-03-28T16:51:34Z 2019-03-28T16:51:34Z 2015-09 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4776 https://onlinelibrary.wiley.com/doi/full/10.1111/grs.12086 1744-697X (Online) https://doi.org/10.1111/grs.12086 eng info:eu-repo/semantics/restrictedAccess application/pdf Wiley; Japanese Society of Grassland Science Grassland science 61 (3) : 131-141. (September 2015) |
| spellingShingle | Gramíneas Forrajeras Eficacia en el Uso Radiación Disponibilidad del Agua Nitrógeno Cynodon Dactylon Dactylis Glomerata Praderas Lolium Perenne Raíces Feed Grasses Use Efficiency Radiation Water Availability Nitrogen Grasslands Roots Cristiano, Piedad María Posse Beaulieu, Gabriela Di Bella, Carlos Marcelo Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title | Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title_full | Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title_fullStr | Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title_full_unstemmed | Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title_short | Total and aboveground radiation use efficiency in C3 and C4 grass species influenced by nitrogen and water availability |
| title_sort | total and aboveground radiation use efficiency in c3 and c4 grass species influenced by nitrogen and water availability |
| topic | Gramíneas Forrajeras Eficacia en el Uso Radiación Disponibilidad del Agua Nitrógeno Cynodon Dactylon Dactylis Glomerata Praderas Lolium Perenne Raíces Feed Grasses Use Efficiency Radiation Water Availability Nitrogen Grasslands Roots |
| url | http://hdl.handle.net/20.500.12123/4776 https://onlinelibrary.wiley.com/doi/full/10.1111/grs.12086 https://doi.org/10.1111/grs.12086 |
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