Comparison of Ostracoda (Crustacea) species composition between lakes and streams at high elevations in Turkey

Yavuzatmaca, Mehmet (2021) Comparison of Ostracoda (Crustacea) species composition between lakes and streams at high elevations in Turkey. ACTA ZOOLOGICA ACADEMIAE SCIENTIARUM HUNGARICAE : AN INTERNATIONAL JOURNAL OF ANIMAL TAXONOMY AND ECOLOGY, 67 (4). pp. 377-401. ISSN 1217-8837 (print); 2064-2474 (online)

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Abstract

Ostracods are one of the most suitable organisms because of their ecological and morphological preferences for habitat types to study the diversity between streams and lakes. Here, 24 streams and 16 lakes were sampled in 2019 to evaluate the species compositions between streams and lakes. Environmental heterogeneity in the sense of the physico-chemical variables was found among the habitats. 24 of the 29 species with 923 individuals were found in the lakes when 13 species with 898 individuals were found in the streams. Eight species were common in both habitat types. Species contributing about 70.81% to the significant differences in the species composition between the habitats showed cosmopolitan characteristics. Species variation among the replicates of lakes were higher than streams. Results indicated that the species composition was probably associated to dissolved oxygen in lakes, while electrical conductivity in streams. Relationship amid elevational range and ostracod species richness was negative in lakes when there was no clear relationship in the streams. Overall, results suggested that determination of influential regional factors in different aquatic bodies can provide important contributions to the estimation of which habitat types can be chosen by species, and the using of species as bioindicators.

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