Determination of Status of Wintering Waterbirds Spices Diversity at Meyghan Wetland in Markazi Province

The objective of this paper was to determine species diversity of wintering waterbirds from a ten-year (2002-2011) monitoring in Meyghan wetland. Data for calculating the estimates of biodiversity come from the midwinter census by using a total count from the department of the Markazi province''s environment. Data analysis for determine species diversity carried out by using Ecological Methodology and SPSS software. During a 10 periods from 2002 to 2011، a total of 134350 wetland birds composed of 56 species from 6 orders and 16 families of the bird fauna of Iran were observed during the course of this study. The most common species counted was the Common Crane (Grus grus) with a total of 54000 individuals. The results indicated that among families of migratory، wintering waterfowl and waders in Meyghan wetland the large family was Gruidae with 40. 19 percent abundance and the lowest was Haematopodidae and Burhinidae each one with 0. 01 percent. The highest species richness recording in years of 2010 with 37 species in this year. The results showed that in this period wader''s fauna with 62. 1 percent and waterfowl fauna with 37. 9 percent، respectively has the highest and lowest abundances. According to the results of species diversity and evenness the year of 2010 has the highest biodiversity of migratory، wintering waterfowl and wader''s fauna in Meyghan wetland and the year of 2002، 2003 and 2008 has the lowest biodiversity (P < 0. 05).