Algae as Bio-Indicators of Water Quality in Freshwater Ecosystems : Eco-geography of Algal Assemblages in the Upper Chico River, Cordillera Region, Luzon, Philippines

Algal blooms occur as a response to available nutrients in water. This sensitivity make these species good biological indicators of water pollution. This study presents the occurrence of algal assemblages along the Upper Chico River of Cordillera Region, North Luzon Philippines, with the corresponding indicated water quality. This paper also includes the photographs of surveyed algal species with their descriptions, water indication and habitat distributions.