Marques, É. T., Gunkel, G. & Sobral, M. C, (2019)
Management of Tropical River Basins and Reservoirs under Water Stress: Experiences from Northeast Brazil. Environments 2019, 6, 62. doi.org/10.3390/environments6060062.
Environmental impact of large reservoirs in Northeastern Brazil – Development of an adapted water management
Evaluation of tropical waters mainly in arid areas still is a significant deficiency of common research, and it is necessary to register and quantify the abiotic and biotic processes as well as the biodiversity. To realize this it is necessary to carry out basic research concerning the turnover processes of nutrients as well of the biodiversity. Current research fields are the impacts of a 25 years old reservoir, the Itaparica, Rio Sao Francisco, situated
in the arid tropical zone of Northeastern Brazil, State Pernambuco.
The knowledge of limnological processes of reservoirs is of high significance, in particular because the occurrence of undesired species (e.g. harmful cyanobacteria, Microcystis spp., Cylindrospermopsis raciborskii) limits usage of the water for humans, animals and for irrigation of agricultural areas. The mass development of macrophytes (Egeria densa) is linked to the occurrence of schistosomiasis (bilharziosis), which leads to human-pathogenic effects.
The vision of a clean ‘green’ hydroelectric energy has become thwarted by some of the results in tropical countries, significant greenhouse gas emissions as well as mass development of cyanobacteria have been reported. Reservoirs underlie a ‘natural’ rapid eutrophication, fortified by anthropogenic activities like aquaculture and irrigation agriculture.
Focus of research cooperation with Northeastern
Innovative concepts for a sustainable management
of reservoirs are
INNOVATE (Interplay among multiple uses of water reservoirs via inNOVative coupling of substance cycles in Aquatic and Terrestrial Ecosystems).
Siegmund-Schultze, M., do Carmo Sobral, M., Alcoforado de Moraes, M.M.G., Almeida-Cortez, J.S., Azevedo, R.G., Candeias, A.L., Cierjacks, A., Gomes, E.T.A., Gunkel, G., Hartje, V., Hattermann, F.F., Kaupenjohann, M., Koch, H., Köppel, J, (2018) The legacy of large dams and their effects on the water-land nexus. Reg Environ Change 18(7), 1883-1888. https://doi.org/10.1007/s10113-018-1414-7
Management of topical reservoirs
Eutrophication - Oligotrophication of reservoirs
Aquaculture – Blue Aquaculture
Reservoirs– Water basin – Management