title: Seasonal variations of chlorophyll-a in Demirdöven Dam Reservoir (Erzurum, Turkey) in relation to phytoplankton density and environmental factors.
abstract: The seasonal variations of Chlorophyll-a was examined in relation to phytoplankton density and physico-chemical factors in Demirdöven Dam Reservoir during 2000-2001. Chlorophyll-a concentrations ranged from 0.62 to 7.19 mg/m3 and from 0.67 to 8.88 mg/m3 in 2000 and 2001, respectively. Maximum Chlorophyll-a concentrations were found near the metalimnion and decreased with depth. Chlorophyll-a concentrations showed positive correlation to phytoplankton density, water temperature and nutrient concentrations, and negative correlations to Secchi depth. Demirdöven Dam Reservoir can be classified as a mesotrophic reservoir according to Chlorophyll-a concentrations.
authors.affiliation: Atatürk University, K Karabekir Education Faculty, Department of Biology Education, Erzurum, Turkey. ekivrak@atauni.edu.tr
authors.forename: Ersin
authors.initials: E
authors.lastname: Kivrak
authors.forename: Gürbüz
authors.initials: G
authors.lastname: Hasan
mesh_terms: D002734:Chlorophyll / Q000032:analysis*; D000077194:Chlorophyll A; D004553:Electric Conductivity; D004777:Environment; D005618:Fresh Water / Q000032:analysis* / Q000382:microbiology*; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000032:analysis; D010839:Phytoplankton / Q000502:physiology*; D011156:Population Density; D012621:Seasons; D013696:Temperature; D014421:Turkey
chemical_list: D002734:Chlorophyll; D010100:Oxygen; D000077194:Chlorophyll A