Yazar "Ozyigit, I.I." seçeneğine göre listele

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    Autecological characteristics of Centaurea hermannii F. Herm an endemic species from Turkey
    (National Centre for Agrarian Sciences, 2014) Eroglu, H.K.; Ozyigit, I.I.; Altay, Volkan; Yarci, C.
    This study was performed on Centaurea hermannii F. Herm to acquire information about some characteristics (bioclimatic, edaphic, topographic, biotic etc.) of its habitat and distribution in Istanbul-Turkey. Plant and soil samples were collected between Subaşı and Akalan Villages, in Catalca District of Istanbul. Soil texture, structure and other physical and chemical measurements such as pH, electrical conductivity (EC), saturation, salinity, organic matter, CaCO3 content were determined by using various analyses. The result showed that the soils where plants grow on consist of 34% sand, 34% silt and 32% clay. In the plants, the average contents of some elements (%) were measured as 1.05, 1.05, 2.93 for N, 0.015, 0.02 and 0.034 for P, 0.026, 0.025 and 0.029 for Na, 1.46, 2.58 and 1.90 for K, 1.70, 0.48 and 1.70% for Ca in roots, stems and leaves, respectively. The values above were compared with the values of other Centaurea species in different regions of Turkey. © 2014, National Centre for Agrarian Sciences. All rights reserved.
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    Environmental relationships of the vascular flora alongside the railway tracks between haydarpaşa and gebze (Istanbul-Kocaeli/ Turkey)
    (Triveni Enterprises, 2015) Altay, Volkan; Ozyigit, I.I.; Osma, E.; Bakir, Y.; Demir, G.; Severoglu, Z.; Yarci, C.
    The vascularflora alongside the railway track between Haydarpasa and Gebze in Turkey was investigated and the floristic features of the study area are presented here. The investigation was undertaken during 2003-2009. Intotal 194 plant taxa were determined. Out of these 174 were naturally growing and 20 were exotics and cultivated. Native taxa within the flora belonged to 135 genera and 50 families, exotic and cultivated taxa belonged to 20 genera and 15 families. The members of Dicotyledonae constituted of 82.76% and Monocotyledonae 16.09% ofthe native taxa. The highest number of these taxa belonged to Asteraceae family (25 species), while the exotics were from Rosaceae (5 species). The plant distributional features, phytogeographical elements, life forms, archaeophytes and neophytes and status of invasive plants have also been included.
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    Woody vegetation of şile and its environs (Istanbul/Turkey) and destruction of the area
    (Triveni Enterprises, 2015) Sezer, Y.; Altay, Volkan; Ozyigit, I.I.; Yard, C.
    The woody vegetation of Şile district (Istanbul/Turkey), and its characteristics in conjunction with its environs are presented in this study. The field studies were performed using classic Braun-Blanquet method during 2003-2010 periods. In the present study three associations, two from forest vegetation and one from maquis vegetation, were characterized in the field. One of these associations is new and its description, typification and syntaxonomy was proposed. Phytosociological and phytoecological features of all three associations were compared with their relatives and related discussion was done accordingly. The associations described in the present study were as follows: Phillyreo-Lauretum nobilis, Smilaco- Castanetum sativae, Fago orientalis-Quercetum ibericae ass. nova. Furthermore, some soil properties such as saturation, organic matter, pH, CaC03, K20 and P205 were analyzed. Relationship between vegetations, their ecological characteristics and protection of these vegetations against biotic pressures are outlined in the presentwork.