| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436256 |
| ISSN: | 0001-3765 |
| Authors: | Lira, Camila C.S1 Medeiros, Pedro H.A2 Neto, Iran E. Lima3 |
| Institutions: | 1Universidade Federal do Ceara, Departamento de Engenharia Agricola, Fortaleza, Ceara. Brasil 2Instituto Federal de Educacao, Ciencia e Tecnologia do Ceara, Maracanau, Ceara. Brasil 3Universidade Federal do Ceara, Departamento de Engenharia Hidraulica e Ambiental, Fortaleza, Ceara. Brasil |
| Year: | 2020 |
| Volumen: | 92 |
| Number: | 1 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | Eutrophication of lakes has affected society in many regions, particularly in water scarce environments where: i) low runoff reduces the self-purification potential of water bodies; ii) water supply relies on surface reservoirs, which are susceptible to nutrient enrichment. This work presents an assessment of the impact of the silted sediment management on the trophic status of a tropical surface reservoir with intense temporal variability of water storage. A complete mixing model describing the total phosphorus budget in the water and sediments was used, based on semi-empirical formulations. The sediment reuse as soil fertilizer has been proposed to increase productivity in small scale agriculture, which should also enhance the water quality by removing the nutrient-enriched sediment from lakes. Model application for a 40-years period indicate that sediment management may improve water quality, changing from poor to acceptable trophic state during roughly 10% of the time when the reservoir is not empty |
| Disciplines: | Geociencias |
| Keyword: | Hidrología, Presas, Sedimentos, Eutroficación, Calidad del agua |
| Keyword: | Hydrology, Reservoirs, Sediments, Eutrophication, Water quality |
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