Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture
Riparian buffer strips can have a significant role in reducing nitrogen (N) transfers from agricultural land to freshwater primarily via denitrification and plant uptake processes, but an unintended trade-off can be elevated nitrous oxide (N2O) production rates. Against this context, our replicated...
| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2022
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/12087 https://www.sciencedirect.com/science/article/pii/S0167880922001803 https://doi.org/10.1016/j.agee.2022.108031 |
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| author | Dlamini, J.C. Cardenas, L.M. Tesfamarian, E.H. Dunn, R.M. Loick, N. Charteris, A.F. Cocciaglia, L. Vangeli, Sebastián Blackwell, M.S.A. Upadhayay, H.R. Hawkins, J.M.B. Evans, J. Collins, A.L. |
| author_browse | Blackwell, M.S.A. Cardenas, L.M. Charteris, A.F. Cocciaglia, L. Collins, A.L. Dlamini, J.C. Dunn, R.M. Evans, J. Hawkins, J.M.B. Loick, N. Tesfamarian, E.H. Upadhayay, H.R. Vangeli, Sebastián |
| author_facet | Dlamini, J.C. Cardenas, L.M. Tesfamarian, E.H. Dunn, R.M. Loick, N. Charteris, A.F. Cocciaglia, L. Vangeli, Sebastián Blackwell, M.S.A. Upadhayay, H.R. Hawkins, J.M.B. Evans, J. Collins, A.L. |
| author_sort | Dlamini, J.C. |
| collection | INTA Digital |
| description | Riparian buffer strips can have a significant role in reducing nitrogen (N) transfers from agricultural land to freshwater primarily via denitrification and plant uptake processes, but an unintended trade-off can be elevated nitrous oxide (N2O) production rates. Against this context, our replicated bounded plot scale study investigated N2O emissions from un-grazed ryegrass pasture served by three types of riparian buffer strips with different vegetation, comprising: (i) grass riparian buffer with novel deep-rooting species, (ii) willow (young trees at establishment phase) riparian buffer, and (iii) deciduous woodland (also young trees at establishment phase) riparian buffer. The experimental control was ryegrass pasture with no buffer strip. N2O emissions were measured at the same time as total oxidized N in run-off, and soil and environmental characteristics in the ri parian buffer strips and upslope pasture between 2018 and 2019. During most of the sampling days, the no-buffer control treatment showed significantly (P < 0.05) greater N2O fluxes and cumulative N2O emissions compared to the remainder of the treatments. Our results also showed that the grass riparian buffer strip is a sink of N2O equivalent to − 2310.2 g N2O-N ha− 1 day− 1 (95% confidence interval:− 535.5 to 492). Event-based water quality results obtained during storms (12 November 2018 and 11 February 2019) showed that the willow riparian buffer treatment had the highest flow-weighted mean N concentrations (N-FWMC) of 0.041 ± 0.022 and 0.031
± 0.015 mg N L− 1, when compared to the other treatments. Our 9-month experiment therefore, shows that ri parian buffer strips with novel deep-rooting grass can therefore potentially address emissions to both water and air. The results imply that over a shorter timeline similar to the current study, the grass riparian buffer strip can potentially address N emission to both air and water, particularly when serving a permanent pasture in similar settings as the current experiment. |
| format | Artículo |
| id | INTA12087 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA120872022-06-14T10:50:55Z Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture Dlamini, J.C. Cardenas, L.M. Tesfamarian, E.H. Dunn, R.M. Loick, N. Charteris, A.F. Cocciaglia, L. Vangeli, Sebastián Blackwell, M.S.A. Upadhayay, H.R. Hawkins, J.M.B. Evans, J. Collins, A.L. Denitrification Nitrous Oxide Permanent Pastures Riparian Zones Denitrificación Óxido Nitroso Pastizal Permanente Zonas Ripícolas Riparian Buffers Run-off N Zonas de Amortiguamiento Ribereñas Segunda Vuelta Norte Riparian buffer strips can have a significant role in reducing nitrogen (N) transfers from agricultural land to freshwater primarily via denitrification and plant uptake processes, but an unintended trade-off can be elevated nitrous oxide (N2O) production rates. Against this context, our replicated bounded plot scale study investigated N2O emissions from un-grazed ryegrass pasture served by three types of riparian buffer strips with different vegetation, comprising: (i) grass riparian buffer with novel deep-rooting species, (ii) willow (young trees at establishment phase) riparian buffer, and (iii) deciduous woodland (also young trees at establishment phase) riparian buffer. The experimental control was ryegrass pasture with no buffer strip. N2O emissions were measured at the same time as total oxidized N in run-off, and soil and environmental characteristics in the ri parian buffer strips and upslope pasture between 2018 and 2019. During most of the sampling days, the no-buffer control treatment showed significantly (P < 0.05) greater N2O fluxes and cumulative N2O emissions compared to the remainder of the treatments. Our results also showed that the grass riparian buffer strip is a sink of N2O equivalent to − 2310.2 g N2O-N ha− 1 day− 1 (95% confidence interval:− 535.5 to 492). Event-based water quality results obtained during storms (12 November 2018 and 11 February 2019) showed that the willow riparian buffer treatment had the highest flow-weighted mean N concentrations (N-FWMC) of 0.041 ± 0.022 and 0.031 ± 0.015 mg N L− 1, when compared to the other treatments. Our 9-month experiment therefore, shows that ri parian buffer strips with novel deep-rooting grass can therefore potentially address emissions to both water and air. The results imply that over a shorter timeline similar to the current study, the grass riparian buffer strip can potentially address N emission to both air and water, particularly when serving a permanent pasture in similar settings as the current experiment. Fil: Dlamini, J.C. Crop and Climate Sciences. Departament of Soil; Sudáfrica. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. University of Pretoria. Department of Plant and Soil Sciences; Sudáfrica Fil: Cardenas, L.M. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Tesfamarian, E.H. University of Pretoria. Department of Plant and Soil Sciences; Sudáfrica Fil: Dunn, R.M. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Loick, N. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Charteris, A.F. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Cocciaglia, L. Università degli Studi di Perugia. Dipartimento di Scienze Agrarie, Alimentari e Ambientali; Italia Fil: Vangeli, Sebastián. 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 Ingeniería Agrícola y Uso de la Tierra. Cátedra de Manejo y Conservación de Suelo; Argentina Fil: Blackwell, M.S.A. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Upadhayay, H.R. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Hawkins, J.M.B. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. Fil: Evans, J. Rothamsted Research. Computational and Analytical Sciences; Reino Unido Fil: Collins, A.L. Rothamsted Research. Sustainable Agriculture Sciences; Reino Unido. 2022-06-14T10:29:16Z 2022-06-14T10:29:16Z 2022-05-23 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/12087 https://www.sciencedirect.com/science/article/pii/S0167880922001803 1873-2305 https://doi.org/10.1016/j.agee.2022.108031 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Agriculture, Ecosystems & Environment 336 : 108031. (September 2022) |
| spellingShingle | Denitrification Nitrous Oxide Permanent Pastures Riparian Zones Denitrificación Óxido Nitroso Pastizal Permanente Zonas Ripícolas Riparian Buffers Run-off N Zonas de Amortiguamiento Ribereñas Segunda Vuelta Norte Dlamini, J.C. Cardenas, L.M. Tesfamarian, E.H. Dunn, R.M. Loick, N. Charteris, A.F. Cocciaglia, L. Vangeli, Sebastián Blackwell, M.S.A. Upadhayay, H.R. Hawkins, J.M.B. Evans, J. Collins, A.L. Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title | Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title_full | Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title_fullStr | Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title_full_unstemmed | Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title_short | Riparian buffer strips influence nitrogen losses as nitrous oxide and leached N from upslope permanent pasture |
| title_sort | riparian buffer strips influence nitrogen losses as nitrous oxide and leached n from upslope permanent pasture |
| topic | Denitrification Nitrous Oxide Permanent Pastures Riparian Zones Denitrificación Óxido Nitroso Pastizal Permanente Zonas Ripícolas Riparian Buffers Run-off N Zonas de Amortiguamiento Ribereñas Segunda Vuelta Norte |
| url | http://hdl.handle.net/20.500.12123/12087 https://www.sciencedirect.com/science/article/pii/S0167880922001803 https://doi.org/10.1016/j.agee.2022.108031 |
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