Variation of limnological parameters in a tropical lake used for tilapiacage …

tThe aim of this study was to assess the effects of tilapia cage culture on the water quality and sedimentof Palminhas Lake during both the dry and rainy seasons. Eight sites within the lake (four in fish farmsand four in areas without fish farms) and one site on an affluent stream were sampled monthly fromFebruary 2011 to January 2012. Dissolved oxygen and pH were significantly lower at fish f…