@article{PereiraMedeirosFranckeetal.2019,
  author    = {Pereira, Bruno and Medeiros, Pedro Henrique Augusto and Francke, Till and Ramalho, Geraldo and F{\"o}rster, Saskia and De Araujo, Jose Carlos},
  title     = {Assessment of the geometry and volumes of small surface water reservoirs by remote sensing in a semi-arid region with high reservoir density},
  series = {Hydrological sciences journal = Journal des sciences hydrologiques},
  volume    = {64},
  journal   = {Hydrological sciences journal = Journal des sciences hydrologiques},
  number    = {1},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {0262-6667},
  doi       = {10.1080/02626667.2019.1566727},
  pages     = {66 -- 79},
  year      = {2019},
  abstract  = {Water fluxes in highly impounded regions are heavily dependent on reservoir properties. However, for large and remote areas, this information is often unavailable. In this study, the geometry and volume of small surface reservoirs in the semi-arid region of Brazil were estimated using terrain and shape attributes extracted by remote sensing. Regression models and data classification were used to predict the volumes, at different water stages, of 312 reservoirs for which topographic information is available. The power function used to describe the reservoir shapes tends to overestimate the volumes; therefore, a modified shape equation was proposed. Among the methods tested, four were recommended based on performance and simplicity, for which the mean absolute percentage errors varied from 24 to 39\%, in contrast to the 94\% error achieved with the traditional method. Despite the challenge of precisely deriving the flooded areas of reservoirs, water management in highly reservoir-dense environments should benefit from volume prediction based on remote sensing.},
  language  = {en}
}
@article{BragaAnchietadeCarvalhoBrosinskyetal.2019,
  author    = {Braga, Brennda and Anchieta de Carvalho, Thayslan Renato and Brosinsky, Arlena and F{\"o}rster, Saskia and Medeiros, Pedro Henrique Augusto},
  title     = {From waste to resource},
  series = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  volume    = {670},
  journal   = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0048-9697},
  doi       = {10.1016/j.scitotenv.2019.03.083},
  pages     = {158 -- 169},
  year      = {2019},
  abstract  = {Reservoir networks have been established worldwide to ensure water supply, but water availability is endangered quantitatively and qualitatively by sedimentation. Reuse of sediment silted in reservoirs as fertilizer has been proposed, thus transforming nutrient-enriched sediments from waste into resource. The aim of this study is to assess the potential of reusing sediment as a nutrient source for agriculture a semiarid basin in Brazil. where 1029 reservoirs were identified. Sedimentation was modelled for the entire reservoir network, accounting for 7 x 10(5) tons of y(-1)sediment deposition. Nutrients contents in reservoir sediments was analysed and com- pared to nutrients contents of agricultural soils in the catchment. The potential of reusing sediment as fertilizer was assessed for maize crops (Zea mays L) and the sediment mass required to fertilize the soil was computed considering that the crop nitrogen requirement would be fully provided by the sediment. Economic feasibility was analysed by comparing the costs of the proposed practice to those obtained if the area was fertilized by traditional means. Results showed that, where reservoirs fall dry frequently and sediments can be removed by excavation, soil fertilization with sediment presents lower costs than those observed for application of commercial chemical fertilizers. Compared to conventional fertilization, when using sediments with high nutrient content, 25\% of costs could be saved, while when using sediments with low nutrient content costs are 9\% higher. According to the local conditions, sediments with nitrogen content above 1.5 g kg(-1) are cost efficient as nitrogen source. However, physical and chemical analyses are recommended to define the sediment mass to be used and to identify any constraint to the application of the practice, like the high sodium adsorption ratio observed in one of the studied reservoirs, which can contribute to soil salinization. (C) 2019 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@misc{BragadeCarvalhoBrosinskyetal.2019,
  author    = {Braga, Brennda and de Carvalho, Thayslan and Brosinsky, Arlena and F{\"o}rster, Saskia and Medeiros, Pedro Henrique Augusto},
  title     = {Corrigendum to: From waste to resource: cost-benefit analysis of reservoir sediment reuse for soil fertilization in a semiarid catchment (The science of the total environment : an international journal for scientific research into the environment and its relationship with man. - 670 (2019), 20, S. 158 - 169)},
  series = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  volume    = {696},
  journal   = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0048-9697},
  doi       = {10.1016/j.scitotenv.2019.133844},
  pages     = {1},
  year      = {2019},
  language  = {en}
}