Contrasting carbon and water flux dynamics in an East African rangeland and cropland
We compare carbon (C) and water dynamics in two East African dryland ecosystems: savanna rangeland and rainfed cropland with minimal tillage over a six-month period. Both ecosystems showed near C neutrality, but with some notable differences. Rangeland exhibited fluctuating C exchange around 0, with...
| Autores principales: | , , , , , , , , , |
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| Formato: | Póster |
| Lenguaje: | Inglés |
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International Livestock Research Institute
2025
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/176870 |
| _version_ | 1855538957275627520 |
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| author | Odongo, Vincent O. Leitner, Sonja Arndt, Claudia Dowling, T. P. F. Gluecks, I. Jackowicz-Korczynski, M. Eklundh, L. Rinne, J. Wooster, M. Merbold, Lutz |
| author_browse | Arndt, Claudia Dowling, T. P. F. Eklundh, L. Gluecks, I. Jackowicz-Korczynski, M. Leitner, Sonja Merbold, Lutz Odongo, Vincent O. Rinne, J. Wooster, M. |
| author_facet | Odongo, Vincent O. Leitner, Sonja Arndt, Claudia Dowling, T. P. F. Gluecks, I. Jackowicz-Korczynski, M. Eklundh, L. Rinne, J. Wooster, M. Merbold, Lutz |
| author_sort | Odongo, Vincent O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | We compare carbon (C) and water dynamics in two East African dryland ecosystems: savanna rangeland and rainfed cropland with minimal tillage over a six-month period. Both ecosystems showed near C neutrality, but with some notable differences. Rangeland exhibited fluctuating C exchange around 0, with distinct C losses and subsequent uptake following episodic rains. Cropland initially acted as a C sink; however, accounting for lateral C export from chickpea harvest shifted its balance to neutral. Cropland also demonstrated higher carbon use efficiency (CUE) and water use efficiency (WUE) during peak growth, linked to agricultural management practices. Our findings emphasize the need to incorporate lateral C fluxes and account for intra-annual variability for accurate C budgeting, while recognizing the co-limitation by water and nitrogen in these drylands. Sustainable land management practices that address complex C-water interactions are critical for enhancing ecosystem resilience and mitigating climate change. |
| format | Poster |
| id | CGSpace176870 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | International Livestock Research Institute |
| publisherStr | International Livestock Research Institute |
| record_format | dspace |
| spelling | CGSpace1768702025-10-25T17:16:08Z Contrasting carbon and water flux dynamics in an East African rangeland and cropland Odongo, Vincent O. Leitner, Sonja Arndt, Claudia Dowling, T. P. F. Gluecks, I. Jackowicz-Korczynski, M. Eklundh, L. Rinne, J. Wooster, M. Merbold, Lutz environment carbon ecosystems water We compare carbon (C) and water dynamics in two East African dryland ecosystems: savanna rangeland and rainfed cropland with minimal tillage over a six-month period. Both ecosystems showed near C neutrality, but with some notable differences. Rangeland exhibited fluctuating C exchange around 0, with distinct C losses and subsequent uptake following episodic rains. Cropland initially acted as a C sink; however, accounting for lateral C export from chickpea harvest shifted its balance to neutral. Cropland also demonstrated higher carbon use efficiency (CUE) and water use efficiency (WUE) during peak growth, linked to agricultural management practices. Our findings emphasize the need to incorporate lateral C fluxes and account for intra-annual variability for accurate C budgeting, while recognizing the co-limitation by water and nitrogen in these drylands. Sustainable land management practices that address complex C-water interactions are critical for enhancing ecosystem resilience and mitigating climate change. 2025-05-10 2025-10-07T18:32:39Z 2025-10-07T18:32:39Z Poster https://hdl.handle.net/10568/176870 en Open Access application/pdf International Livestock Research Institute Odongo, V., Leitner, S., Arndt, C., Dowling, T. P. F., Gluecks, I., Jackowicz-Korczynski, M., Eklundh, L., Rinne, J., Wooster, M. and Merbold, L. 2025. Contrasting carbon and water flux dynamics in an East African rangeland and cropland. Poster prepared for the 9th International Greenhouse Gas & Animal Agriculture Conference, Nairobi, 5-9 October 2025. Nairobi, Kenya: ILRI. |
| spellingShingle | environment carbon ecosystems water Odongo, Vincent O. Leitner, Sonja Arndt, Claudia Dowling, T. P. F. Gluecks, I. Jackowicz-Korczynski, M. Eklundh, L. Rinne, J. Wooster, M. Merbold, Lutz Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title | Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title_full | Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title_fullStr | Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title_full_unstemmed | Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title_short | Contrasting carbon and water flux dynamics in an East African rangeland and cropland |
| title_sort | contrasting carbon and water flux dynamics in an east african rangeland and cropland |
| topic | environment carbon ecosystems water |
| url | https://hdl.handle.net/10568/176870 |
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