Monthly variations in the shell structure of two freshwater ostracod (Crustacea) species in Karapinar Spring (Bolu, Turkey)
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Tubitak Scientific & Technological Research Council Turkey
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The variations of environmental conditions (T degrees C, pH, delta C-13, delta O-18, Mg/Ca, and Sr/Ca) for two ostracod species (Psychrodromus olivaceus, Potamocypris similis) were analyzed and compared to identify the controls of environmental parameters on the chemical and isotopic composition of their valves. The specimens were collected from Karapinar Spring (Bolu, Turkey) between October 2009 and November 2010. The species were observed throughout the year. Psychrodromus olivaceus showed relatively constant Mg/Ca ratios during the study period, whereas those of P. similis showed more variability. The ratio was also significantly different (P < 0.05) between the two species. We did not find significant correlation between water temperature and either of the species' Mg/Ca ratios. The stable isotope record for P. similis was very patchy, showing a small range of values consistent with the groundwater source, similar to the behavior of Sr/Ca. The Sr/Ca ratio displayed little variation throughout the year, suggesting hydrochemical stability over time, most likely in response to the groundwater source. The stable isotope data displayed pronounced variability for P. similis but little for P. olivaceus, suggesting that the former may be responding to seasonality, whereas the latter responds to groundwater.
Açıklama
Anahtar Kelimeler
Ostracoda, rheocrene spring, isotope analyses, Mg/Ca ratio, Sr/Ca ratio
Kaynak
Turkish Journal of Zoology
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
39
Sayı
5
