Lima, P. de F., Sousa, M.S.R., Porfírio, A.F., Almeida, B.S., Freire, R.H.F. e Santaella, S.T. 2015. <b&gt;Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir. Acta Scientiarum. Biological Sciences. 37, 3 (jul. 2015), 309-318. DOI:https://doi.org/10.4025/actascibiolsci.v37i3.27160.