Open Access Research Paper Views (1378) Macroinvertebrates and plankton diversity as indicators of water quality in Langihan lagoon, Butuan city, Philippines Julie S. Berame Int. J. Biosci. 11(1), 386-393, July 2017. DOI: http://dx.doi.org/10.12692/ijb/11.1.386-393 Keywords: Macroinvertebrates, Physico-chemical, plankton, Sørensen index, WQI Details