Yazar "Cobanoglu, Hatice" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim Yok
    Öğe
    Accumulation analysis and overall measurement to represent airborne toxic metals with passive tree bark biomonitoring technique in urban areas
    (Springer, 2024) Isinkaralar, Kaan; Isinkaralar, Oznur; Koc, Ismail; Cobanoglu, Hatice; Canturk, Ugur
    Authorities have long proved the utility of bioindicators in monitoring the state of environmental pollution. Some biological indicators can measure environmental pollutant levels, and many tree species have been tested for suitability for monitoring purposes. The differences in morphological characteristics in the trees have demonstrated the effects of human activities on different materials. Measuring bark and wood biomass from contaminated sites was identified and directly compared with those from a clean site or areas characterized by distinct contamination sources. However, preliminary results demonstrate the approach's potential in the realization of strategies for disease control and promoting health to reduce environmental and health inequalities in at-risk urban areas. Picea orientalis L. and Cedrus atlantica Endl., especially their bark, can be regarded as a more robust storage of Cu (37.95 mg/kg) and Mn (188.25 mg/kg) than Pinus pinaster, Cupressus arizonica, and Pseudotsuga menziesii, which and is therefore a better bioindicator for Cu and Mn pollution. Considering the total concentrations as a result of the study, the pollution is thought to be caused by environmental problems and traffic in the region. The deposition of Cu, Mn, Ni, and Zn elements was found P. menziesii (60, 443, 58, and 258 mg/kg) and P. orientalis (76, 1684, 41, and 378 mg/kg) and seems to reflect atmospheric quite clearly compared to P. pinaster, C. arizonica, and C. atlantica. Ni and Zn concentrations have significantly increased since 1983, and P. menziesii and P. orientalis can be potentially valuable bioindicators for emphasizing polluted fields.
  • Küçük Resim Yok
    Öğe
    Climate Change Effect on Potential Distribution of Anatolian Chestnut (Castanea sativa Mill.) in the Upcoming Century in Turkiye
    (Aves, 2023) Cobanoglu, Hatice; Canturk, Ugur; Koc, Ismail; Kulac, Semsettin; Sevik, Hakan
    Climate change, which is effective on a global scale, affects almost all living creatures and ecosystems directly or indirectly. Forests are at the top of the ecosystems that are predicted to be affected more by climate. This study intended to determine how the growth regions of the Anatolian chestnut in Turkiye belong to one of the utmost vital forest tree species, which will be affected by climate change. Within the study scope, suitable areas for the growth of the species in 2040, 2060, 2080, and 2100 were determined under different scenario models [intermediate (shared socio-economic pathways 245) and most extreme (shared socio-economic pathway 585)] and compared with the natural distribution areas of today (the year of 2020). As a result of the study, it is predicted that the suitable distribution areas for Anatolian chestnut cultivation will decrease significantly, especially after 2060-2080, and even disappear entirely by 2080, according to the extreme scenarios. Even with the best scenario (shared socio-economic pathway 245), it is projected that the suitable growth regions for Anatolian chestnuts will decrease to one-fifth of today's levels in 2100. It may be recommended to create mixed forests with better-adapted chestnut varieties or origins for future conditions due to being more resilient to various environmental stress factors. In addition, considering the future projections, new chestnut plantations should be established in suitable areas for chestnut production.
  • Küçük Resim Yok
    Öğe
    Effects of Silver Nanoparticles on Germination and Seedling Characteristics of Oriental Beech (Fagus orientalis) Seeds
    (North Carolina State Univ Dept Wood & Paper Sci, 2024) Ozel, Halil Barm; Sevik, Hakan; Yildiz, Yafes; Cobanoglu, Hatice
    Nowadays, the applications of nanotechnology are increasing in various fields such as information technology, energy, the medical sector, and agriculture. Nanotechnology has proved its ability to solve problems in agriculture and related industries. Establishing the impact of nanoparticles on various ecosystems has become a primary research topic, but studies on forest ecosystems and trees are quite limited. This study examined the effects of silver nanoparticles on the germination parameters of oriental beech seeds and established their toxic threshold values. Silver nanoparticles were applied at concentrations of 200, 400, 600, 800, and 1000 mg/L to oriental beech (Fagus orientalis) seeds collected from 10 different populations in order to identify the germination rate, germination percentage, seedling height, root collar diameter, plumula length, radicle thickness, and radicle length parameters. The results revealed that silver nanoparticles have a negative effect on germination and seedling parameters of oriental beech seeds, and that this effect is clearly seen in the germination rate at 20 mg/L levels and in seedling characters starting from 60 mg/L dose, causing a decrease of 13% in germination rate, 24% in germination percentage, 40% in plumula length, and 30% in radicle length. The Kahramanmaras-Andirin population was found to be the most affected by nanoparticles, while the Bursa-Inegol and Ordu-Akkus populations were the least affected.