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Study of biodiversity and identification of foraminifera communities In the eastern Qeshm island


 Start Page 1 | End Page 17


 This investigation was carried out to study of foraminifers’ communities in the eastern part of Qeshm Island during the hot and the cold seasons. Samples were collected with 3. 3 cm diameter corer from the first 5 cm surface of sediments in 9 stations with 3 replicates. In the study 44 specimens were identified specifically, and 31 specimens were typificated at genera; they included 25 families. Organisms were rillustrated using Scaning electron microscop photography. In the summer 2013 Triloculina oblonga (147. 9 ind/10cm2) and Protoelphidium sp. (81. 19 ind/10cm2) were observed at higher abundance. Maximum abundance of live individuals was related to Ammonia beccarii (22. 7 ind/10cm2) and Protoelphidium sp. (13. 9 ind/10cm2) in winter 2014. The Shannon – weaner index from minimum 0. 3 in winter to maximum 4. 4 in summer was ranged. Significant correlation between some environmental factors and foraminifer abundances was found (P<0. 05) using spearman correlation test. A correlation was found between total abundance of foraminifers and silt-clay portions of sediments, salinity and pH in summer never in winter. The abundance of Protoelphidium sp. and Elphidium vitreum showed correlation with the dissolved oxygen and the silt-clay portion.


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