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Reservoirs: mirrors of the surrounding landscape?
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Orientador(es)
Resumo(s)
To assess in what extent the environmental quality of aquatic systems reflect landscape features
several water quality parameters were determined in two reservoirs. Concomitantly, the
surrounding landscape was characterized and the existing potential sources of phosphorous and
nitrogen runoff were identified and when possible estimated. Located in a mountainous area
with negligible direct human influence, it was expected to find lower amounts of suspended
organic matter and nutrients in Serra Serrada Reservoir. Water level fluctuations caused by
intensive human water use, grazing and frequent land fires in the surrounding landscape can
explain the unexpected high values of the mentioned parameters. In Azibo Reservoir the factors
with greatest influence on water parameters seem to be allochthonous sources of nutrients
originated from agriculture and grazing in the catchment area and recreational activities.
However, in this particular case the potential sources of nutrients could have been minimized by
the patchy structure of the surrounding landscape.
Descrição
Palavras-chave
Landscape Water quality land use Phosphorous and Nitrogen sources
Contexto Educativo
Citação
Geraldes, Ana; Boavida, Maria José (2010). Reservoirs: mirrors of the surrounding landscape?. In In Forest landscapes and global change. New frontiers in management, conservation and restoration. Proceedings of the IUFRO Landscape Ecology Working Group International Conference. Bragança: IUFRO, IPB. p. 496-501. ISBN 978-972-745-110-4
Editora
Instituto Politécnico de Bragança