Deniz, Eda Ondokuz Mayıs University - Science and Arts Faculty - Department of Biology, Turkey , Gönülol, Arif Ondokuz Mayıs University - Science and Arts Faculty - Department of Biology, Turkey , Baytut, Özgür Ondokuz Mayıs University - Science and Arts Faculty - Department of Biology, Turkey

Ecometric investigation of mesozooplankton abundance, distribution and its affecting ecological factors in Samsun coastal waters of Southern Black Sea (Türkiye)

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The mesozooplankton fauna in Samsun coastal region of the Black Sea was investigated between April 2012 - March 2013. Species composition, abundance and biomass values of the mesozooplankton fauna and physichochemical factors that are exerting influence on these, were determined in the samples which were monthly collected at four stations. A Bray-Curtis similarity matrix was created from the mesozooplankton abundance data and agglomerative hierrarchical cluster analysis, multi dimensional scaling, analysis of similarity variance between the factor groups (ANOSIM), similartiy percentages (SIMPER) were applied on the similarity matrix. Canonical correspondence analysis (CCA) was also applied in order to investigate the relationship between environmental variables and community configuring species which are responsible from the dissimilarities among sample groups. A total of 16 species were identified in holoplankton fauna and meroplanktonic organisms were determined. Three sample groups at the similarity levels of %64 were determined as a result of the agglomerative hierrarchical cluster analysis on the similarity matrix which was obtained from the mesozooplankton abundance data. According to the results of the CCA, similarities between sample groups (ANOSIM) and dissimilarities (SIMPER) those applied for species abundances and environmental parameters, temperature, salinity, NH4-N, Secchi Disc Depth and pH had significant effects on the distribution of species.

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Mesozooplankton , Abundance , MDS , ANOSIM , SIMPER , CCA

Ege Journal Of Fisheries an‎d Aquatic Sciences

78