Distribution and ecological habitat of Scenedesmus and related genera in some freshwater resources of Northern and North-Eastern Thailand

Abstract

Abstract. Phinyo K, Pekkoh J, Peerapornpisal Y. 2017. Distribution and ecological habitat of Scenedesmus and related genera in some freshwater resources of Northern and North-Eastern Thailand. Biodiversitas 18: 1092-1099. The family Scenedesmaceae is made up of freshwater green microalgae that are commonly found in bodies of freshwater, particularly in water of moderate to polluted water quality. However, as of yet, there have not been any studies on the diversity of this family in Thailand and in similar regions of tropical areas. Therefore, this research study aims to investigate the richness, distribution and ecological conditions of the species of the Scenedesmus and related genera through the assessment of water quality. The assessment of water quality was based on the physical and chemical parameters at 50 sampling sites. A total of 35 taxa were identified that were composed of six genera, i.e. Acutodesmus, Comasiella, Desmodesmus, Pectinodesmus, Scenedesmus and Verrucodesmus. Eleven taxa were newly recorded in Thailand. The taxa were found in the oligo-mesotrophic to the eutrophic status. The major study sites were influenced by the nutrients identified in the water resources. The dominant species were Desmodesmus communis (E. Hegewald) E. Hegewald, D. armatus var. bicaudatus (Guglielmetti) E. Hegewald, D. armatus (Chodat) E. Hegewald and D. serratus (Corda) S. S. An, Friedl & E. Hegewald. This study has produced revised material on Scenedesmus and related genera in Thailand that is considered important information with regard to the classification of microalgae in Thailand.

Molluscicidal, histopathological and genotoxic effects of Scenedesmus obliquus and Spirulina platensis extracts and their biosynthesized zinc oxide nanoparticles on Biomphalaria alexandrina snails

“…Microalgae are unicellular or multicellular microorganisms living in freshwater and marine systems (Afify et al, 2018; Daneshvar et al, 2018; Khan et al, 2018). Among freshwater green microalgae is Scenedesmus (Guiry 2014; Phinyo et al, 2017). It has been used in different life aspects such as nutraceutical, pharmaceutical, aquaculture, bioremediation and medical fields (Indira & Biswajit, 2012; Ishaq et al, 2016; Sathasivam et al, 2019).…”

Nuevos registros de Algas verdes (Chlorophyta) de ríos y arroyos serranos de la provincia de Córdoba, Argentina

“…Largo celular 6-8 µm; ancho de 4-4,5 µm; espinas de 4 µm l Hábitat y distribución: planctónica. Citada para ambientes mesotróficos a eutróficos (Phinyo et al, 2017). Sin datos en Argentina (Tell, 1985).…”

“…Las Chlorophyceae aportaron el mayor número de especies, su alta variabilidad morfométrica permite que se desarrollan en diversos hábitats (Happey-Wood, 1988) y especies como Monoraphidium griffithii; Actinastrum hantzschii, Monactinus simplex, Nephrocytium agardhianum, Pediastrum boryanum var. boryanum, P simplex, P. duplex y Scenedesmus dimorphus (=Tetradesmus dimorphus) son indicadoras de estado eutró-fico (Huber-Pestalozzi, 1983;Comas Gonzaléz, 1996;Pinilla, 2000;Reynods, 2002;Phinyo et al, 2017).…”

Scenedesmus regularis: An alternative biosorbent for the efficient and fast removal of methylene blue

“…Scenedesmus is a very common, easily accessible microalgae genus in freshwater ecosystems. They can develop in profoundly contaminated aquatic systems and are ordinarily utilized as contamination markers (Phinyo et al, 2017). At this point, the Scenedesmus genus can be used as a good candidate for removing environmental pollutants.…”