فهرست مطالب آرش اشکوب

The present study was conducted to investigate the effects of physical factors on the diversity of species of Carabidae (Coleoptera: Carabidae) in three regions of Karaj, Eshtehard, and Taleghan, Alborz province. To this end, during 2015-2016, sampling was carried out using pitfall traps and physical factors. In this regard, the elevation, slope, direction, precipitation, temperature, soil texture, grain size of soil, and percentage of vegetation were recorded in each studied station. Based on the results, in total, 329 specimens including 38 species were identified in the three studied areas. Pearson and Spearman tests were used to investigate the relationships between the species diversity index (Shannon's Diversity Index) and the studied factors. Also, the effect of habitat physical parameters on the diversity of the species of Carabidae in the studied areas was analyzed using Canonical Correspondence Analysis (CCA). The results of the study showed that no significant relationship between the Shannon-Wiener Index and studied parameters (P<0.05). Species diversity was affected by temperature, the three parameters of altitude, soil texture, and grain size of soil, and the four parameters of direction, slope, precipitation, and vegetation percentage in Karaj, Eshtehard, and Taleghan, respectively.

The aim of this study was to investigate species diversity of the ground beetles, Carabidae Latreille, 1802 family in Alborz Province in three regions, including Karaj, Eshtehard and Taleghan. For this purpose, during 2016 and 2017, a total of 27 stations were sampled using pitfall traps. The Shannon-Wiener index was calculated as an index of species diversity. According to the results, a total of 329 ground beetles, including 36 species belonging to 20 genera and 9 subfamilies were identified in the studied areas, which included 15 new records for Alborz Province. The most dominant species in Karaj were Harpalus (Pseudoophonus) griseus (Panzer, 1796), Harpalus (Pseudoophonus) rufipes (Degeer, 1774), Harpalus (Harpalus) distinguendus distinguendus (Duftschmid, 1812) and Calathus (Neocalathus) cinctus (Motschulsky, 1850). Zabrus (Zabrus) morio morio (Ménétriés, 1832) and Grammognatha euphratica (Dejean, 1822) in Eshtehard and Ditomus calydonius oriens (Dvořák, 1993), Calathus (Calathus) syriacus (Chaudoir, 1863) and Harpalus (Harpalus) oblitus oblitus (Dejean, 1829) in Taleghan were dominant. The results of the nonparametric biodiversity indices (Shannon-Wiener) showed that Karaj had the highest species diversity.