Investigation on photosynthetic pigments content of lotic systems (Blacksea River Basin, Ordu-Turkey)

摘要

In this study, 43 river samples from Province Ordu in the Blacksea River Basin were examined for photosynthetic pigments content (chlorophyll-α, -b, -c and total carotenoid). The values of algal pigments were recorded between 0.051-3.86 μg L~(-1), 0-4.545 μg L~(-1), 0.066-11.902 μg L~(-1), 0.05-3.35 μg L~(-1) for chlorophyll-α, -b, -c and total carotenoid respectively. When the trophic levels of 43 flowing water according to OECD (1982) criterias are compared, they have character about 72% ultraoligotrophic, 7% oligotrophic (Akpinar, Elekci, Tabakhane and Lahna Streams), 9.3% mesotrophic (Bolaman, Tavara-Eskidir, Kavaklar, Keslek Streams).