Abstract
Macroinvertebrates provide signals about water source conditions and are used for monitoring, as they require water to be in good condition for survival. When water is polluted, slight changes in their habitat conditions can cause them to disappear. This study was conducted on the Lombaryo River, located in the diocese of the same name in Gonzalo Pizarro canton, which is in the province of Sucumbíos, with a total length of 24 kilometers and running through the entire diocese. The purpose of this study is to determine water quality by identifying five points in specific areas where the abundance of each species is collected and counted, using large invertebrates as bioindicators. This study finds strong evidence of the presence of Ephemeroptera, Plecoptera, and Trichoptera in the aquatic ecosystem of the Lombaryo River, and insect diversity indicates a clear connection with the protection of ecosystem services in this water body.
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