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- MakaleAçık Erişim2019Scopus SJRQ3Possible indices for the assessment of ecological stream quality based on macroinvertebrates in Euphrates tributaries (Turkey)
Gültekin, Zuhal; Hellmann, Claudia; Aydin, Rahmi; Winkelmann, Carola
The aim of this study was to support the development of ecological stream quality assessment tools in order to provide a method for sustainable water management in Turkey. Therefore, we present two new or adapted indices based on benthic invertebrates. To develop and adapt the indices, 17 streams were studied and separated into three quality classes, which were supported by four community indices (EPT [%], EPTCBO [%], number of Individuals, evenness), and 23 taxa were identified as indicators for these three quality classes. As a first biological index, we adapted the Hindu Kush-Himalaya biotic score (HKHbios) to the Euphrates catchment by establishing a new and ecoregion-specific score list (Euph-Scores) by scoring 93 taxa depending on their distribution between the quality classes. Based on these scores, several average score per taxon values (ASPT value) were calculated. All ASPT values of the Euph-Scores separated the quality classes significantly. After a comparison of the different ASPT values we recommend to use the weighted ASPT, because the weighting enabled a sharper differentiation between the quality classes and named it Euphrates Biotic Score (EUPHbios). As a second biological index, we propose the proportion of habitat specialists. To calculate this index, a habitat score was developed by analysing the habitat preferences of several benthic invertebrates. Habitat score values were assigned to the 20 most common taxa from the streams in the best quality class (natural streams). The proportion of habitat specialists, identified using the new habitat score, differed significantly between the three quality classes, with higher values in natural streams than in polluted streams. In the light of the results, the presented methods appear to be suitable for developing a multi-metric index for assessment programs for the mountainous regions of the Middle East.
AtıfScopus8OpenAlex10
İncele - MakaleYalnız künye2017Scopus SJRQ3Macroinvertebrate composition in the metarhithral zones of the Munzur and Pülümür rivers: A preliminary study
Gültekin, Zuhal; Aydin, Rahmi; Winkelmann, Carola
The aim of this work was the determination of the macroinvertebrate community in the metarhithral zones of the Munzur and Pulumur rivers. This is the first documented research on macroinvertebrates in the metarhithral zone of the Munzur and Pulumur rivers in the region of the city of Tunceli. In total, 30 taxa of 9 orders of benthic invertebrates were recorded at the four sampling sites. Larvae of Taeniopteryx caucasica (Plecoptera), Oligoneuriella baskale, and Ecdyonurus dispar (Ephemeroptera) were recorded for the first time in the province of Tunceli.
AtıfScopus10WoS6
İncele - MakaleYalnız künye2017Scopus SJRQ2Characterisation of natural streams using community indices and basal resources of macroinvertebrates in the upper Euphrates Basin
Gültekin, Zuhal; Remmers, Wolfram; Aydin, Rahmi; Winkelmann, Carola; Hellmann, Claudia
The characterisation of natural stream conditions is the first important step to analyse ecological quality of streams in the Euphrates basin. We found that the community indices correspond to very good ecological conditions in five natural streams of that region. The macroinvertebrates composition differed significantly between September and May. Number of taxa and Shannon index were significantly higher in autumn than in spring. FPOM and biofilm were the most relevant basal resources of benthic invertebrates.
AtıfScopus1OpenAlex2İncele