Abstract
Taxonomic study on the composition of epiphytic algae living on submerged leaf and root tissues of macrophyte Eichhornia crassipes (Mart.) Solms-Loubach, found at Laguna de Bay, Philippines was conducted. In total, 21 algal taxa were identified: seven Cyanophyceae, six Euglenophyceae, five Chlorophyceae, two Trebouxiophyceae and one Klebsormidiophyceae. Of these taxa, the occurrence of two rare cyanobacteria, Pseudanabaena minima (G.S. An) Anagnostidis and Synechococcus nidulans (Pringsheim) Komárek are reported for the first time in the Philippines. Two species are also reported here for the first time in the Philippines based on current taxonomic nomenclature and these are Pseudopediastrum boryanum (Turpin) E. Hegewald, Phormidium granulatum (Gardner) Anagnostidis which were based on the former names of Pediastrum boryanum (Turpin) Meneghini and Oscillatoria granulata Gardner, respectively. These taxonomic records are considered important basal information in enriching the knowledge about the diversity and habitat distribution of cyanobacteria and microalgae on macrophytes found in freshwater habitats in the Philippines.
Highlights
Epiphytic algae are group of algae found attached and living on submerged aquatic vegetation, which includes freshwater angiosperms and macroalgae (Dunn et al 2008)
Taxonomic study on the composition of epiphytic algae living on submerged leaf and root tissues of macrophyte Eichhornia crassipes (Mart.) Solms-Loubach, found at Laguna de Bay, Philippines was conducted
The specimen were described and photographed for the first time in the studied area in order to fill the gap of information of epiphytic algae associated to water hyacinth found in Laguna de Bay (Philippines)
Summary
Epiphytic algae are group of algae found attached and living on submerged aquatic vegetation, which includes freshwater angiosperms and macroalgae (Dunn et al 2008). These organisms are considered as primary source of food for small fish and several invertebrates in the littoral zone. Epiphytic algae serve as good indicators of water quality and environmental conditions in an aquatic ecosystem These organisms make an ideal bioindicator since they are sessile in nature, have short generation times, and each species has its own set of environmental tolerances and preferences (Dunn et al 2008). These organisms are dominant species in the lotic water system and play a significant role in ecological balance between several types of macrophytes and their respective aquatic environment (Hassan et al 2014; Fawzy 2016)
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