TAXONOMY AND SPECIES COMPOSITION OF EPIPHYTIC ALGAE IN STA. CRUZ RIVER, LAGUNA (PHILIPPINES)
Keywords:Epiphytic algae, macrophytes, Philippines, river, taxonomy
Algal epiphytes attached on three dominant aquatic macrophytes (Pistia striatotes, Eichhornia crassipes and Ipomoea aquatic) were investigated as part of a preliminary study on the ecological assessment of Sta. Cruz River, which has been used primarily for agriculture and fishery. In total, 22 algal taxa were identified on the studied macrophytes: 8 Chlorophyta, 4 Cyanobacteria, 7 Bacillariophyta, and 3 Euglenophyta. The taxa in this paper represent 8 classes, 16 orders, 20 families, 22 genera and 22 species based on the latest algal taxonomical nomenclature. Among these taxa, the existence of a rare filamentous cyanobacteria, Planktothrix compressa (UtermÃ¶hl) Anagnostidis et KomÃ¡rek is described for the first time in the Philippines. A species of diatom is also reported in this study for the first time based on recent algal taxonomic nomenclature and this is Ulnaria ulna (Nitzsch) CompÃ¨re that is based on the former name of Synedra ulna (Nitzsch) Ehrenberg. These taxonomic records proved that aquatic macrophytes represents a unique habitat for novel and diverse types of algal flora, which demands further investigations in the country.
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Copyright (c) 2021 Eldrin De Los Reyes Arguelles, Rosario Gionson Monsalud
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