Dicle Nehri'nin Dicle Üniversitesi Yerleşkesindeki Kesiminin Alg Florası Üzerine Bir Araştırma

Öz

Bu çalışmada, Dicle Üniversitesi kampüsü sınırları içindeki Dicle Nehri kesiminin alg florası incelenmiş ve bentik ile pelajik habitatlarda toplam 56 takson belirlenmiştir. Heterokontophyta (26 takson) ve Cyanobacteria (12 takson) en zengin gruplar olurken, Charophyta (8), Chlorophyta (6), Euglenozoa (2) ve Myzozoa (2) daha az temsil edilmiştir. Hâkim türler arasında Cymbella affinis, Diatoma vulgaris ve Oscillatoria curviceps yer almakta olup, bu türlerin dağılımı habitatlara özgü adaptasyon ve ekolojik toleranslarını yansıtmaktadır. Su sıcaklığı, pH, KOİ, BOİ, askıda katı madde ve besin elementlerindeki değişimler, alg topluluklarının yoğunluğu ve kompozisyonunu belirleyen başlıca çevresel faktörler olarak öne çıkmaktadır. Özellikle organik madde ve besin elementlerindeki artışlar, Cyanobacteria mensubu taksonların artışını teşvik ederek, habitatların tür yapısını da etkilemiştir.

Anahtar Kelimeler

• Dicle Nehri
• Diyarbakır
• Alg florası
• Diyatome
• Cyanobacteria

An Investigation on the Algal Flora of the Section of the Tigris River within the Campus of Dicle University

Öz

In this study, the algal flora of the Tigris River section within the Dicle University campus was investigated, and a total of 56 taxa were identified in benthic and pelagic habitats. Heterokontophyta (26 taxa) and Cyanobacteria (12 taxa) were the most diverse groups, whereas Charophyta (8), Chlorophyta (6), Euglenozoa (2), and Myzozoa (2) were less represented. Dominant species included Cymbella affinis, Diatoma vulgaris, and Oscillatoria curviceps, reflecting habitat-specific adaptations and ecological tolerances. Variations in water temperature, pH, COD, BOD, suspended solids, and nutrient levels emerged as key environmental factors shaping the abundance and composition of algal communities. In particular, increases in organic matter and nutrient levels promoted the proliferation of Cyanobacteria taxa, thereby also affecting the species composition of the habitats.

Anahtar Kelimeler

• Tigris River
• Diyarbakır
• Algal flora
• Diatoms
• Cyanobacteria

Kaynakça

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