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Evaluation of the trophic status in a Mediterranean reservoir under climate change: an integrated modelling approach
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Orientador(es)
Resumo(s)
This study describes an integrated modelling approach to better understand the trophic status of the
Montargil reservoir (southern Portugal) under climate change scenarios. The SWAT and CE-QUAL-W2
models were applied to the basin and reservoir, respectively, for simulating water and nutrient
dynamics while considering one climatic scenario and two decadal timelines (2025–2034 and
2055–2064). Model simulations showed that the dissolved oxygen concentration in the reservoir’s
hypolimnion is expected to decrease by 60% in both decadal timelines, while the chlorophyll-a
concentration in the reservoir’s epiliminion is expected to increase by 25%. The total phosphorus
concentration (TP) is predicted to increase in the water column surface by 63% and in the hypolimion
by 90% during the 2030 timeline. These results are even more severe during the 2060 timeline. Under
this climate change scenario, the reservoir showed a eutrophic state during 70–80% of both
timelines. Even considering measures that involve decreases in 30 to 35% of water use, the eutrophic
state is not expected to improve
Descrição
Palavras-chave
climate change modelling reservoir trophic status
Contexto Educativo
Citação
C. Almeida et al. Evolution of the trophic status in a reservoir under climate change. Journal of Water and Climate Change, 12.3 (2021)
Editora
IWA Publishing