Limnological bases for the management of urban lakes in Concepción, Bíobío Region, Chile

Viviana Patricia Almanza Marroquín


DOI: https://doi.org/10.3856/vol44-issue2-fulltext-12

ABSTRACT

Morphological, physical and chemical characteristics of urban lakes of Conception were studied. The results indicate that these lakes are in an advanced process of eutrophication caused by excessive anthropogenic nutrient loads (mainly phosphorus and nitrogen). Furthermore, high concentrations of fecal and total coliforms in the water column and heavy metals in the sediments of these lakes were recorded. The results of principal component analyses showed that the total phosphorus, nitrates dissolved oxygen and chlorophyll a, are the variables that best explain the water conditions of all the lakes studied. It is recommended to concentrate the management actions of lakes on total phosphorus. Considering particular situation of each lake, a series of complementary measures for reversing the current situation should be applied. This study provides new limnological information for decision-making process for the recovery of urban lakes of the City of Concepción.


Almanza Marroquín V. Limnological bases for the management of urban lakes in Concepción, Bíobío Region, Chile. Lat. Am. J. Aquat. Res.. 2017;44(2). Available from: doi:10.3856/vol44-issue2-fulltext-12 [Accessed 24 Jan. 2019].
Almanza Marroquín, V. (2017). Limnological bases for the management of urban lakes in Concepción, Bíobío Region, Chile. Latin American Journal of Aquatic Research, 44(2). doi:http://dx.doi.org/10.3856/vol44-issue2-fulltext-12