| Summary: | The main objective of this paper is to evaluate the water quality based on
diatom indices in the study area of the Danube-Tisa-Danube (DTD) canal
system. We used four diatom indices: Watanabe’s index (DAIpo), biological
diatom index (BDI or IBD), the trophic diatom index (TDI) and index of
pollution sensitivity (IPS). Benthic samples were collected in the spring and
autumn 2002 and 2003 from nine sampling sites. The standard method with
concentrated sulfuric acid was used for treatment of the algological samples
[Krammer and Lange-Bertalot 1986] and then permanent slides of diatoms were
made. The abundance was estimated by counting 400 valves of each taxa present
on slide [Round 1991, 1993]. Investigation of the DTD canal system resulted
in description of 145 diatom taxa. Based on the indicator values of
identified taxa we calculated four diatom indices (DAIpo, BDI, TDI and IPS)
and estimated water quality in the study area of the DTD canal system.
[[Projekat Ministarstva nauke Republike Srbije, br. TR 037009]
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