Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana
A study was carried out in the Sudan savanna zone in the Upper East Region of Ghana to assess the rate of sediment-bound nutrient export (NE) into five small reservoirs (Dua, Doba, Zebilla, Kumpalgogo and Bugri) and to analyse the implications of this export. The catchment soils and reservoir sedime...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2011
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| Acceso en línea: | https://hdl.handle.net/10568/42467 |
| _version_ | 1855541072527097856 |
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| author | Amegashie, BK Quansah, C Agyare, Wilson Agyei Tamene, Lulseged D. Vlek, Paul L.G. |
| author_browse | Agyare, Wilson Agyei Amegashie, BK Quansah, C Tamene, Lulseged D. Vlek, Paul L.G. |
| author_facet | Amegashie, BK Quansah, C Agyare, Wilson Agyei Tamene, Lulseged D. Vlek, Paul L.G. |
| author_sort | Amegashie, BK |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A study was carried out in the Sudan savanna zone in the Upper East Region of Ghana to assess the rate of sediment-bound nutrient export (NE) into five small reservoirs (Dua, Doba, Zebilla, Kumpalgogo and Bugri) and to analyse the implications of this export. The catchment soils and reservoir sediments from the various study sites were sampled and analysed for their bulk density, particle size distribution and nutrient content. Assessment of the nutrient concentrations indicated that the reservoir sediments were richer not only in nutrients and organic carbon, but also in clay and silt, than the catchment soils, having enrichment ratios >1. Nutrient export rates (NE; kg ha?1 year?1) from the reservoir catchments ranged from 0.755 (±0.264) for OC, 0.104 (±0.0245) for N, 0.0020 (±0.0003) for P, 0.016 (±0.0038) for K, 0.009 (±0.0024) for Na, 0.113 (±0.017) for Ca and 0.027 (±0.0093) for Mg. These rates were lower than those of other studies, likely due to the low nutrient content in the catchment soils. The relationships established between NE and specific sediment yield (SSY) indicated the NE was positively correlated with SSY (R2 = 0.66–0.98). The derived empirical equations can be satisfactorily used to predict the quantity of sediment-bound plant nutrients lost from similar catchments and subsequently stored in the reservoir sediments. The study results also suggest the need for sustainable land management practices to forestall erosion in the catchment areas and to reduce reservoir sedimentation, for enhancement of the livelihoods of the communities in the study area. |
| format | Journal Article |
| id | CGSpace42467 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2011 |
| publishDateRange | 2011 |
| publishDateSort | 2011 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace424672024-08-27T10:37:17Z Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana Amegashie, BK Quansah, C Agyare, Wilson Agyei Tamene, Lulseged D. Vlek, Paul L.G. soil erosion savannas soil chemicophysical properties rotational cropping mineralization suelo sabanas propiedades físico - químicas suelo rotación de cultivos mineralización A study was carried out in the Sudan savanna zone in the Upper East Region of Ghana to assess the rate of sediment-bound nutrient export (NE) into five small reservoirs (Dua, Doba, Zebilla, Kumpalgogo and Bugri) and to analyse the implications of this export. The catchment soils and reservoir sediments from the various study sites were sampled and analysed for their bulk density, particle size distribution and nutrient content. Assessment of the nutrient concentrations indicated that the reservoir sediments were richer not only in nutrients and organic carbon, but also in clay and silt, than the catchment soils, having enrichment ratios >1. Nutrient export rates (NE; kg ha?1 year?1) from the reservoir catchments ranged from 0.755 (±0.264) for OC, 0.104 (±0.0245) for N, 0.0020 (±0.0003) for P, 0.016 (±0.0038) for K, 0.009 (±0.0024) for Na, 0.113 (±0.017) for Ca and 0.027 (±0.0093) for Mg. These rates were lower than those of other studies, likely due to the low nutrient content in the catchment soils. The relationships established between NE and specific sediment yield (SSY) indicated the NE was positively correlated with SSY (R2 = 0.66–0.98). The derived empirical equations can be satisfactorily used to predict the quantity of sediment-bound plant nutrients lost from similar catchments and subsequently stored in the reservoir sediments. The study results also suggest the need for sustainable land management practices to forestall erosion in the catchment areas and to reduce reservoir sedimentation, for enhancement of the livelihoods of the communities in the study area. 2011-03 2014-09-24T07:58:01Z 2014-09-24T07:58:01Z Journal Article https://hdl.handle.net/10568/42467 en Limited Access Wiley Amegashie, B. K., Quansah, C., Agyare, W. A., Tamene, L. and Vlek, P. L. G. (2011), Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana. Lakes & Reservoirs: Research & Management, 16: 61–76. doi: 10.1111/j.1440-1770.2011.00459.x |
| spellingShingle | soil erosion savannas soil chemicophysical properties rotational cropping mineralization suelo sabanas propiedades físico - químicas suelo rotación de cultivos mineralización Amegashie, BK Quansah, C Agyare, Wilson Agyei Tamene, Lulseged D. Vlek, Paul L.G. Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title | Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title_full | Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title_fullStr | Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title_full_unstemmed | Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title_short | Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana |
| title_sort | sediment bound nutrient export from five small reservoir catchments and its implications for the sudan savanna zone of ghana |
| topic | soil erosion savannas soil chemicophysical properties rotational cropping mineralization suelo sabanas propiedades físico - químicas suelo rotación de cultivos mineralización |
| url | https://hdl.handle.net/10568/42467 |
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