SciELO - Scientific Electronic Library Online

vol.12 issue4Reliability analysis of wastewater treatment plantsTheoretical-experimental analysis of liquid pollutant dispersion in soils author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Engenharia Sanitaria e Ambiental

Print version ISSN 1413-4152On-line version ISSN 1809-4457


FIGUEIREDO, Maria Cléa Brito de et al. Evaluation of reservoirs environmental vulnerability to eutrophication. Eng. Sanit. Ambient. [online]. 2007, vol.12, n.4, pp.399-409. ISSN 1413-4152.

This work presents a tool to analyze the vulnerability of reservoirs to eutrophication, aiming to subsidize control and remediation actions related with this process. It was analyzed the water basins of Araras, Edson Queiroz and Jaibaras reservoirs, located in the Acaraú watershed, Ceará, Brazil. The multi-criteria analyses methodology used, in order to define environmental vulnerability indicators to reservoir eutrophication, considered reservoir sensibility and pressure factors in the water basin responsible for the transport of sediments and nutrients to the reservoir. A Geographic Information System (GIS) with map algebra as major tool was applied to soil use and occupation, declivity and erosion indicators. It was identified high vulnerability to eutrophication in the three mentioned reservoirs because of the waterbasins susceptibility to erosion, high phosphorous load mainly from the extensive cattle raising and low relative depth of the reservoirs.

Keywords : Eutrophication; environmental vulnerability; GIS; reservoirs; Acaraú.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License