, Volume 13, Issue 1, pp 73–80 | Cite as

Distribution, ecological tolerance and optimum levels of freshwater Ostracoda (Crustacea) from Diyarbakır, Turkey

  • Okan KülköylüoğluEmail author
  • Derya Akdemir
  • Rikap Yüce
Research Paper


A total of 23 ostracod taxa were found in 48 of 90 different water bodies (wetlands, springs, lakes, creeks, etc.) located at moderate to high elevation (530–1,095 m) in Diyarbakır province. The ecological tolerances and optimum values for environmental variables of 15 species were analyzed. Accordingly, maximum numbers of species were found between 700 and 800 m. Ostracod species and sampling sites along with seven environmental variables were ordinated with canonical correspondence analysis (CCA). The first axis of CCA explained 72% of the relationship between species and environmental variables. Of these, water temperature, redox potential and altitude were the most influential (P < 0.05) factors for species. Based on habitat similarities, an unweighted pair group mean average dendrogram divided species into four clustering groups. Among the species, Potamocypris arcuata, Candona neglecta and Psychrodromus fontinalis had the highest optimum estimates for altitude, whereas P. arcuata, Herpetocypris brevicaudata and P. fontinalis exhibited the highest tolerances to altitude. While most species revealed unique tolerances and optimum values for different ecological variables, species with cosmopolitan characteristics had wider ranges of ecological tolerances and distribution amid the variety of habitats along elevational gradients.


Ostracoda Cosmopolitan Distribution Habitat preferences Ecology 



We are grateful to Dr. Todd C. Esque (USGS) for his earlier comments and suggestions for the manuscript. In addition, we would like to thank two anonymous reviewers for constructive comments and suggestions. We appreciate the assistance of Mr. Serdar POLAT (Vice-governor of Diyarbakır) and Mr. Mustafa Kayhan (Vice-president of the Agriculture Department) for their invaluable help and time (DA) during our visits to the study sites. Dr. Cem Aygen (Aegean University, Turkey) is also kindly acknowledged for the information about their study site. This project was supported by Marmara University, Scientific Research Foundation (project no. FEN-DKR-140607-0121).

Supplementary material

10201_2011_357_MOESM1_ESM.doc (138 kb)
Supplementary Appendix 1 (DOC 138 kb)
10201_2011_357_MOESM2_ESM.doc (143 kb)
Supplementary Appendix 2 (DOC 143 kb)


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Copyright information

© The Japanese Society of Limnology 2011

Authors and Affiliations

  • Okan Külköylüoğlu
    • 1
    Email author
  • Derya Akdemir
    • 2
  • Rikap Yüce
    • 2
  1. 1.Department of BiologyAbant İzzet Baysal UniversityBoluTurkey
  2. 2.Department of BiologyMarmara UniversityIstanbulTurkey

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