Land-Cover Patterns and Hydrogeomorphology of Tributaries: Are These Important Stressors for the Water Quality of Reservoirs in the Mediterranean Region?
| Autor: | Ana Lima, Sofia Fialho, Miguel Potes, Patrícia Palma, Maria Helena Novais, Alexandra Marchã Penha, Paula Alvarenga, Clarisse Mourinha, Maria João Costa, Manuela Morais, Anabela Rosado |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Watershed
lcsh:Hydraulic engineering 010504 meteorology & atmospheric sciences Geography Planning and Development STREAMS Land cover 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry flow regime lcsh:Water supply for domestic and industrial purposes hydrogeomorphology lcsh:TC1-978 water quality assessment 0105 earth and related environmental sciences Water Science and Technology land use/land cover (LULC) Hydrology lcsh:TD201-500 Land use land use/land cover Hydrogeomorphology Sediment 15. Life on land 6. Clean water Guadiana watershed 13. Climate action Environmental science Water quality Surface runoff |
| Zdroj: | Water, Vol 12, Iss 2665, p 2665 (2020) Water Volume 12 Issue 10 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) |
| ISSN: | 2073-4441 |
| Popis: | Four streams in the Guadiana watershed were followed up to assess hydrogeomorphological and physicochemical characteristics, and to analyze its correlation with land use/land cover (LULC), analyzing their possible influence in reservoir water quality and possible influence in the reservoir water quality. The highest amounts of organic descriptors and nutrients were quantified in streams with the major percentage of olive groves and vineyards and urban land cover classes. Streams more influenced by agro-silvo-pastoral class presented better water quality, as this type of LULC acts as a bu er of the contamination runo . The results highlighted that the hydrogeomorphology of the streams may influence the transfer of pollutants loads to reservoirs. Hence, in intermittent streams characterized by coarse particles in the sediment, high amounts of pollutants are accumulated when the flow ceases, and are further transported to the reservoirs when the flow retakes. On the contrary, streams with sediments characterized by a great percentage of fine particles and organic matter do not induce so much stress in reservoirs, since these allow the adsorption of nutrients and trace elements, without their transfer to reservoirs info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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