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Abstract

In order to investigate the relationship of freshwater ostracods with some of those physico-chemicals and sediment phosphate concentrations, 97 shallow aquatic bodies were sampled during July 2014 in the Sinop province (Turkey). A total of 3083 individuals belonging to 28 ostracod taxa are reported from 76 of 97 sites. While 24 of these taxa were firstly reported from the province, Bradleytr iebella tuberculata is a newly reported species for Turkish Ostracoda fauna. Species diversity (H'=1.87) increased around the middle elevations (601-750 m) whereas it was decreased in low and high elevations. Results of ANOSIM analyses exhibited no significant difference among species composition of eight groups with 150 m elevational range (P>0.05). Cosmoecious species occurred in almost all elevational ranges whereas others seemed to prefer low to middle elevational ranges. A significant effect of water temperature, magnesium content of water, and total organic phosphate of sediments (P<0.05) were observed on ostracod assemblages. It appears that rather than number of sampling sites, habitat quality and spatial differences played critical roles on the species diversity.

Assessment of rarity and ecological preferences of the non-marine ostracods (Crustacea) in Çanakkale Province (Türkiye)

“…This relationship impacts both the distribution of species and their levels of rarity and commonness. For example, sediment phosphate content was reported to be the most effective factor in the distribution of ostracods in Sinop Province (Türkiye), along with magnesium and water temperature (Yavuzatmaca et al 2017a). Therefore, when water and sediment analyses are conducted simultaneously and then distribution and ecology of ostracods are studied, valuable information will be obtained regarding the indicator potential of these organisms.…”

Species assemblages of Ostracoda (Crustacea) from west-site of Turkey: their indicator potential for lotic and lentic habitats

“…It was also frequently observed in Iberian rivers and streams (Mezquita et al 1999), springs (Van der Meeren et al 2010 and in flowing waters (Coviaga et al 2017). Recently, D'Ambrosio et al (2017 pinpointed the plasticity of it for freshwater habitats and so it occurs in many types of habitats (Yavuzatmaca et al 2017a). Because of its high tolerance levels to the different ecological variables, it is easily adapted to different aquatic conditions and so it shows a wide geographical distribution throughout the world.…”

“…Malmqvist et al (1997) portrayed I. bradyi as a lotic species and then Mezquita et al (1999) proposed frequently occurrence of it in the rivers and their tributaries in the eastern Spain. However, recent studies indicated its wide habitat preferences than previously known (Külköylüoğlu 2013;Uçak et al 2014;Yavuzatmaca et al 2017aYavuzatmaca et al , 2017b because of its high tolerance levels to different environmental conditions. In the present study, average abundance of 2.00 in streams and 0.13 in lakes with a 6.64% contribution to the differences between lakes and streams (Table 3) were calculated.…”