ABSTRACT
Community structure of benthic diatom in Góksu Stream was studied over a one year period. The presence of a total of 69 taxa was recorded in the stream. The abundance of diatom taxa recorded varied substantially among the habitat types. The genera Cymbella, Navicula, Nitzschia, and Gomphonema comprised the most species and were numerically dominant in most communities. Frequency, diversity, and similarity of diatoms varied among habitats.