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  • Küçük Resim
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    Determination of some ecological characteristics and economical importance of Vitex agnus-castus
    (EurAsian Journal of BioSciences (Elektronik), 2011) Ünver, Cüneyt; Doğan, Yunus; Uğulu, İlker; Durkan, Nazmi; Mert, Hasan Hüseyin
    This study was conducted in order to exhibit some of the ecological and economical attributes of Vitex agnus-castus, a typical Mediterranean plant. The study was conducted in two different stages. At first, soil samples of V. agnus-castus were collected from 38 different localities in the Western Anatolian part of Turkey during flowering to investigate the soil properties. It was observed that this plant generally prefers loamy-textured, neutral, and slightly alkaline soils poor in calcium carbonate, containing varying amounts of organic matter, moderate and rich in nitrogen, rich in phosphorus and deficient in potassium. In addition, the economical and ethnobotanical importance of V. agnus-castus was investigated. It was observed that the species is widely used as a pharmaceutical drug, as a dye plant, as a source of honey, as a material in basket weaving, and for ornamental use. It is used in landscape architecture because it is a shrub with beautiful flowers and aroma.
  • Küçük Resim
    Öğe
    Heavy metal accumulation in the bark and leaves of Juglans regia planted in Artvin City, Turkey
    (Taylor & Francis Inc, 2014) Doğan, Yunus; Ünver, Mehmet Cüneyt; Uğulu, İlker; Çalış, Mesude; Durkan, Nazmi
    The aim of this study was to determine the level of heavy metals such as copper, iron, manganese, zinc, lead, nickel, cadmium and chromium concentrated in Juglans regia bark and leaf samples from different localities in Artvin, Turkey. Analysis of the heavy metals Cu, Fe, Mn, Zn, Pb, Ni, Cd and Cr in samples was carried out by inductively coupled plasma optical emission spectroscopy (ICP-OES; Perkin Elmer, Optima 8000 DV). Statistical significance was determined by analysis of variance (ANOVA). The comparisons were performed in order to determine whether there were any differences between J. regia bark and leaf samples in terms of average heavy metal accumulation levels. As a result of this study, the following mean concentrations were determined for J. regia bark samples: the contents of Cu, Fe, Mn, Zn, Pb, Ni, Cd and Cr (mu g g(-1), dry weight) ranged from 72.46 to 88.14, 14.40 to 628.0, 0.896 to 67.71, 7.000 to 28.52, 0.040 to 0.905, 1.031 to 2.744, 0.011 to 0.158 and 1.192 to 3.134, respectively. On the other hand, for J. regia leaf samples, the contents of Cu, Fe, Mn, Zn, Pb, Ni, Cd and Cr (mu g g(-1), dry weight) ranged from 0.339 to 13.80, 12.72 to 698.2, 1.001 to 204.6, 7.362 to 56.03, 0.158 to 0.665, 0.130 to 2.744, 0.041 to 0.114 and 0.508 to 2.767, respectively. In the statistical analysis, heavy metal accumulation values of J. regia bark and leaf samples for Cu, Ni and Cr were significantly different (P < 0.05).