Journal of Wetland Ecobiology
Volume 17, Issue 3 (Autumn 2025)
2025, 17(3): 31-40 |
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Investigation of Zooplankton Communities of Siazakh Lake (Kurdistan) and Ecological Status Assessment Based on Biodiversity Indices. Wetland Ecobiology 2025; 17 (3) : 3
URL: http://jweb.ahvaz.iau.ir/article-1-1113-en.html
URL: http://jweb.ahvaz.iau.ir/article-1-1113-en.html
Abstract: (87 Views)
Siazakh Lake, located in Kurdistan Province, is an important aquatic ecosystem with an area of approximately 550 hectares, playing a key role in supporting aquatic life and regional biodiversity. This study was conducted to investigate the composition, abundance, and biodiversity of zooplankton in this lake during the years 2024–2025. Sampling was carried out at five stations using a Juday net with a mesh size of 55 microns. In total, 28 zooplankton groups belonging to four phyla—Rotifera, Protozoa, Arthropoda, and Nematoda—were identified. The phylum Rotifera was the dominant group with a mean abundance of 61 ind/L (53% of the total population), in which the genera Polyarthera (26 ind/L) and Keratella (25 ind/L) had the highest abundance. Protozoa (mean 26 ind/L, 29%) and Arthropoda (mean 25 ind/L, 21%) ranked second and third, respectively. The highest total zooplankton abundance was observed in Khordad (June) with 458 ind/L, and the lowest was recorded in Aban (November) with 8 ind/L. The Shannon-Wiener biodiversity index varied between 1.13 and 2.24 during the study period, with a mean of 1.75 ± 0.33. These values and the composition of the zooplankton communities indicate a mesotrophic condition (relatively clean) for the lake. Although direct data on feeding interactions with fish were not collected, the high abundance of Rotifera and Protozoa, as vital food sources for fish larvae, highlights the importance of conserving these communities. Therefore, it is recommended to avoid releasing non-native fish without assessing their ecological impacts, and to continue the continuous monitoring of the lake's physicochemical and biological parameters.
Article number: 3
Type of Study: Research |
Subject:
Special
Received: 2025/12/18 | Accepted: 2026/02/1 | Published: 2026/02/1
Received: 2025/12/18 | Accepted: 2026/02/1 | Published: 2026/02/1
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