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    Biodiversity in different successional stages of Mediterranean enclaves distributed along Sinop Peninsula (Turkey)
    (Taylor & Francis Ltd, 2018) Elmas, Emire; Kutbay, Hamdi Guray
    The aim of this research was to evaluate plant diversity and the relationships between the distribution of Raunkiaer life forms and community structure, and species richness, at different successional stages in communities of Quercus ilex L., Erica arborea L. and Sarcopoterium spinosum (L.) Spach., distributed as enclaves in Sinop Province. Permanent sample plots were selected to determine plant diversity. The cover percentage of each plant species was recorded monthly during two vegetation periods. Raunkiaer life forms, and the Shannon-Wiener, Evenness, Simpson and Margalef indexes were determined. Twenty-three species in Quercus ilex, 96 species in Erica arborea, and 148 species in Sarcopoterium spinosum were identified. Hemicryptophyte dominancy was observed followed by phanerophytes in the Q. ilex community, and therophyte and hemicryptophyte dominancy in the E. arborea and S. spinosum communities, respectively. It was determined that the S. spinosum community was the most heterogeneous community while the Q. ilex community was more uniform than other communities. The variation in diversity indexes, homogeneity, and composition of life forms among communities adopting a similar climatic environment could result from a differentiation of environmental factors, which impact on community structuring, from biotic to abiotic at different successional stages of Mediterranean communities.
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    The effects of erosion and accretion on plant communities in coastal dunes in north of Turkey
    (Springer-Verlag Italia Srl, 2017) Agir, Senay Ulu; Kutbay, Hamdi Guray; Surmen, Burak; Elmas, Emire
    Coastal erosion resulted in dramatic changes in the structure of coastal dune communities for example many characteristic species may be removed from dune zones. The effects of coastal erosion on coastal dune communities in north of Turkey were investigated along seashore-inland gradient. It has been found that the severity of erosion caused to increase the differences among coastal dune communities. Our results also implied that embryonic shifting dunes represented by Achilleo maritimo-Elymetum farcti (EU Habitat 2110) and shifting dunes along the shoreline with Ammophila arenaria (white dunes) represented by Medicagini marinae-Ammophiletum arundinacea (EU Habitat 2120) were more prone to coastal dynamics. It has been found that the severity of erosion caused to increase the differences among coastal dune communities.
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    Öğe
    The effects of some soil properties (soil nitrogen forms and moisture) on community structure in Mediterranean plant communities in the Black Sea region
    (Wiley, 2019) Elmas, Emire; Kutbay, Hamdi Guray
    Mediterranean ecosystems comprise the second biodiversity hotspot area after tropical rain forests and will be most affected by global climate change. Therefore, it is important to understand community dynamics for effective conservation in this region. We investigated the relationships between soil moisture, nitrogen forms and community structuring in Quercus ilexL., Erica arborea L. and Sarcopoterium spinosum (L.) Spach communities, representing different successional stages, distributed as Mediterranean enclaves on the Sinop Peninsula (Turkey). The soil moisture, ammonium, nitrate and nitrite content were measured seasonally. Differences in these abiotic parameters within and between communities over seasons were tested. Previously collected biotic data were then used to analyze the relationship between soil parameters and community structure. Significant differences in soil parameters within and between seasons were found within and between communities. Our results show that there are different relationships between soil moisture, nitrogen forms and community structure in Mediterranean plant communities representing different successional stages. Differentiation in vegetation structure during succession cause changes especially in the water and nitrate content of the soil, and these changes in turn affect the continuity of community structure in Mediterranean plant communities.