Seasonal succession of phytoplanktons in relation to physcio-chemical factors in Yamchi dam reservoir, Ardabil province

Panahy Mirzahasanlou, Jamileh; Ramezanpour, Zohreh; Imanpour Namin, Javid

Volume 9, Issue 2 (Autumn 2019) J. Aqua. Eco 2019, 9(2): 22-31 | Back to browse issues page

‎ 20.1001.1.23222751.1398.9.2.3.4

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Panahy Mirzahasanlou J, Ramezanpour Z, Imanpour Namin J. Seasonal succession of phytoplanktons in relation to physcio-chemical factors in Yamchi dam reservoir, Ardabil province. J. Aqua. Eco 2019; 9 (2) :22-31
URL: http://jae.hormozgan.ac.ir/article-1-714-en.html

Seasonal succession of phytoplanktons in relation to physcio-chemical factors in Yamchi dam reservoir, Ardabil province

Jamileh Panahy Mirzahasanlou ^*

, Zohreh Ramezanpour

, Javid Imanpour Namin

Abstract: (2368 Views)

The seasonal succession of phytoplankton communities in Yamchi dam constructed on Balikhli River, Ardabil province was studied from October 2014 to November 2015. Monthly sampling was carried out in three stations at the depths of 0, 5 and 10 m in station number 1 and the depths of 0 and 5 m in stations number 2 and three. In this survey, 41 species belonging to 35 genera, 8 classes and 6 phylla of algae were studied. The phyla Chlorophyta and Bcillariophyta contained the highest number of species (14 and 13 species, respectively). The highest density of phytoplanktons was observed in station 1 at the depth of 10 m in September (2.4 × 10⁴cell.ml ^-1) and the lowest density was identified at station 1 at the depth of 5 m in May (2 × 10³cell.ml ^-1). In total, the highest densities belonged to Chlorophyta with the maximum densities in spring and summer (the highest was 1.2 × 10³cell.ml ^-1). In studying the seasonal succession, diatoms were dominant in autumn and early spring assemblages. In summer, green algae and dinoflagellates and in late summer cyanobacteriae were the most dominant groups. The seasonal succession observed in Yamchi dam reservoir is characteristic of eutrophic alkaline lakes. Results of ordination analysis (PCA) revealed that the temperature, silicate, sulphate and BOD, and COD were the main factors affecting phytoplankton assemblages in this lake.

Keywords: Abundance, Balikhlu River, Phytoplankton density, Ordination

Full-Text [PDF 348 kb] (617 Downloads)

Type of Study: Research | Subject: Special
Published: 2019/09/23