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    Protective effect of clinoptilolite on lead toxicity in common carp Cryprinus carpio
    (2004) Tepe, Yalçin; Akyurt, Ihsan; Ciminli, Canan; Mutlu, Ekrem; Çalişkan, Mahmut
    Protective effects of clinoptilolite, a natural zeolite, on lead toxicity in common carp Cyprinus carpio were investigated. Sublethal concentrations of lead nitrate (60 mg/L) in water for a 35-day period decreased both the soluble protein and RNA contents in the liver of the common carps and also caused significant changes of some biochemical parameters. The treatment of exposure water with clinoptilolite (50 mg/L) decreased lead accumulation in fish. No adverse effects of clinoptilolite application were observed.
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    Öğe
    Zooplankton composition and water quality of lake gölbaşi (Hatay-Turkey)
    (2011) Bozkurt, Ahmet; Tepe, Yalçin
    Zooplankton composition, abundance, distribution and some water quality parameters were investigated to determine the apparent response of the zooplankton community to water quality conditions in Lake Gölbaşi (Hatay, Turkey) between April 2003 and March 2004. Water quality parameters, such as pH, dissolved oxygen, temperature, salinity, chemical oxygen demand (COD), total alkalinity and hardness, ammonia, nitrite, nitrate, phosphate, sulphite, sulphate, chloride, potassium, sodium and silica analyses, were done. The highest zooplankton abundance was found in August, whereas the lowest was determined in January. The zooplankton composition of the lake consisted of Rotifera, Cladocera and Copepoda. Number of species of Rotifera was higher than the other taxa. In the study, a total of 61 taxa of Rotifera, 20 taxa of Cladocera, and 10 taxa of Copepoda were found. Rotifera species Dipleuchlanis propatula (Gosse, 1886) is the second record for Turkish inland waters. The annual mean concentration of chlorophyll a was measured as 37.87±9.77 ?g/L. The levels of nutrients (mean values of total phosphorus and nitrate-nitrogen: 0.21±0.19 mg/L and 12.36±5.99 mg/L) were high enough to assume the lake at eutrophic level. © by psp.