In collaboration with Payame Noor University and Iranian Society of Physiology and Pharmacology

Document Type : Article

Authors

1 M. A. in Environmental Science, Department of Environmental Science Research Institute (ESRI), Shahid Beheshti University, Tehran, Iran

2 Ph.D. Candidate in Environmental Science, Department of Environment Sciences, Faculty of Natural Resources, University of Agricultural Tehran, Iran

3 M. A. in Environmental Science, Department of Biodiversity and Ecosystem Management, Environmental Science Research Institute, Shahid Beheshti University, Tehran, Iran

Abstract

Abstract
Today, aquatic and aquatic fauna have high value in many aspects and are considered as indicators of biodiversity in studies. Therefore, the present study was conducted with the aim of studying the trend of changing and comparing the indices of diversity and density of aquatic and aquatic birds in the wetland of Shirin Sou dam in Hamadan province, it was an indicator for 1 year. For this purpose, the birds of this wetland were counted from October 2009 to September 2010. The results showed that the highest bird density in the month of November was 23.77 hectares. The highest and lowest values ​​of Simpson's index in Shirin Su Dam lake were recorded in March (0.93) and March (0.69) respectively. Also, the highest and lowest values ​​of Shannon diversity index were in October and October (4.40) and Bahman (2.5). For the beryllium diversity index, the highest and lowest values, as well as the Shannon diversity index, were shown in October (4/10) and Bahman (1.6). In terms of Simpson's uniformity index, the highest and the lowest uniformity were reported in Shirin Su Dam lagoon in February (0.7) and May (0.27). For the Camargo uniformity index, Simmons index was the highest and lowest in Bahman (0.68) and May (0.27). For the Smith Wilson uniformity index, the highest and lowest values ​​were determined in February and March and were respectively 0.8 and 0.36 respectively. The maximum and minimum densities in the survey period in the wetland of Shirin Sou dam were allocated to the months of November (23.78) and Bahman (1.17), respectively. The number of aquatic species in different months of the year was more than aquatic species. But the abundance of aquatic birds has always been more than aquatic. The Shirin Su Dam Lake seems to be better and more capable of providing nutritional resources for aquatic species. And this issue has also been found by observing the abundance of aquatic birds in relation to aquatic species.

Keywords

 
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