International Journal of Limnology

This study was estimated the correlations between various physicochemical parameters, phytoplankton species, different indices, and to evaluate the ecological status of the lentic systems in the Eastern Mediterranean River basin in Turkey.

Microalgae taxa can be identified with short DNA barcodes. Eight primer pairs for 16S and five for 23S were tested in silico and with mock communities including cyanobacteria and eukaryotic microalgae. We conclude that the 23S primer pair ECLA23S_F1/ECLA23S_R1 was the best candidate to decipher freshwater phytoplankton communities.

There are many types of small waters in the Balkans. They are habitats for Chironomidae. Mountain rheocrenes are inhabited by cold-adapted midges. The fauna of springs in the river valleys is diverse. Midges living in the Skodra L.’ spring system prefer higher water temperatures and hard substrates.

Chlorella vulgaris and Raphidocelis subcapitata, were exposed to different concentrations of ABS microplastics during 6 days. We observed physiological changes in cell growth and chlorophyll content in response to the concentration and duration of exposure.

Effects of E. densa on the the growth and morphology of C. vulgaris with gradient algal density were investigated. The study might provide further insights and knowledge into the interspecific interaction in freshwater ecosystems.

This study provides information on the structure and composition of the egg bank of a shallow lake and the effect of biotic factors on hatching rates. The results show the dominance of rotifers over cladocerans and copepods and a positive effect of certain biotic factors on hatching.

In this study, the geothermal water (GW) was replaced with 25% (GW25), 50% (GW50), 75% (GW75) and 100% (GW100) of the volume of the Schlösser culture medium (SM). The biomass concentration was determined to the higher in the GW50 (1.324 g/L) than in other groups (GW25, GW75, GW100 and SM). The highest protein content and phycocyanin purity ratio were found in the GW75 medium containing 116.6 times higher phosphate than the SM. The chlorophyll, phycocyanin, protein, dry biomass, mineral and amino acid in groups prepared by mixing Schlösser medium and geothermal water mix (GW25, GW50 and GW75) were better than geothermal water (GW100) and the SM. It is concluded that using partial geothermal water in Spirulina production is efficient considering the parameters, i.e., biomass yield, protein, mineral and chlorophyll contents, and also return of investment.

Thirteen ostracods reported for the first time from Lake Karamurat exhibited clear habitat preferences and seasonal occurrences. CCA results explained about 91% of correlation between species and environmental variables. The Pseudorichness Ratio of the lake was very low (Pr=0.25), indicating dominancy of cosmopolitan species over noncosmopolitans.