Peyzaj Mimarlığı Bölümü Koleksiyonu

Effects of soil–sand mixtures on alchemilla mollis and geranium psilostemon: a multi-criteria performance analysis under low-altitude conditions using PROMETHEE

Wed, 01 Jan 2025 00:00:00 GMT

Effects of soil–sand mixtures on alchemilla mollis and geranium psilostemon: a multi-criteria performance analysis under low-altitude conditions using PROMETHEE Oğuztürk, Türker; Acar, Cengiz The selection of suitable growing media plays a vital role in the successful adaptation of high-altitude plant species to lowland urban landscapes. This study assessed the morphological and physiological performance of two native perennial species, Alchemilla mollis and Geranium psilostemon, under low-altitude conditions using three different soil–sand (mil) mixtures: TA (50% soil–50% sand), TB (75% soil–25% sand), and TC (100% soil). Over a 17-month period, key plant growth parameters—including height, canopy diameter, leaf number, and chlorophyll concentration—were systematically monitored. Additionally, soil samples were analyzed before and after cultivation to determine pH, total nitrogen, organic matter, organic carbon, phosphorus, and electrical conductivity levels. To evaluate overall performance, the PROMETHEE multi-criteria decision-making (MCDM) method was applied, incorporating 11 criteria spanning plant development, soil quality, and economic considerations. Results revealed that the TC medium offered the most favorable outcomes for both species, particularly in terms of chlorophyll content and biomass accumulation. Conversely, the TB medium supported higher retention of nitrogen and organic matter. While A. mollis exhibited greater resilience under suboptimal conditions, G. psilostemon demonstrated rapid development under favorable settings. These findings underscore the potential of native perennial species in sustainable landscape design and validate the use of MCDM approaches in optimizing plant–soil interactions in horticultural applications.

The effects of urbanization on species richness and floristic diversity in residential gardens

Wed, 01 Jan 2025 00:00:00 GMT

The effects of urbanization on species richness and floristic diversity in residential gardens Doğan, Tuba Gül; Demirci, Sena; Eroğlu, Engin; Çorbacı, Ömer Lütfü; Kaya, Sertaç; Meral, Alperen Urbanization is recognized as a major driver reshaping plant diversity patterns globally; however, ecological responses to urbanization are highly site-specific and often diverge from generalized assumptions. This study investigates how urbanization influences plant species richness and Shannon diversity within residential gardens across an urban-to-rural gradient in Rize, Turkey—a rapidly urbanizing region along the Black Sea coast—thereby addressing a critical knowledge gap and challenging generalized assumptions commonly held in urban ecology. Field surveys across 150 residential gardens documented 603 plant taxa from 120 families, revealing critical patterns of biodiversity change under varying urbanization levels. Non-native species comprised 57% of the total taxa, highlighting their dominance in residential gardens across different urbanization intensities. Herbaceous species richness declined significantly in highly urbanized zones (F (2,27) = 10.35, p < 0.001), whereas non-native species richness exhibited a pronounced increase (+ 57%), particularly in areas with urbanization levels exceeding 55%. Woody species richness, however, remained relatively stable across urbanization gradients. Interestingly, moderately urbanized areas displayed the highest diversity indices (Shannon_H: 4.32), reflecting a transitional ecological dynamic consistent with the intermediate disturbance hypothesis. By contrast, areas with low urbanization (4.16) and high urbanization (4.26) exhibited reduced biodiversity, with native species showing the steepest declines in highly urbanized zones. Although urbanization is often associated with biodiversity loss, this paradigm warrants reevaluation in light of the observed increase in overall Shannon diversity driven by adaptable non-native species. Therefore, urban biodiversity management strategies should transcend generalized assumptions, addressing the complex interplay of native and non-native species dynamics across varying urbanization gradients.

Determination of suitable recreational areas in Adana province Çukurova district by ahp technique

Wed, 01 Jan 2025 00:00:00 GMT

Determination of suitable recreational areas in Adana province Çukurova district by ahp technique Koçan, Nurhan; Şengür, Şeyma; Alp, Muhibe Aslı; Çorbacı, Ömer Lütfü; Özkan, Esra Çetinkaya Recreation is people’s whole activity to regain their lost energy. In urban recreation areas, today’s people can escape city life and reach themselves and nature at some point. In this context, the distribution, size, and accessibility of recreation areas in cities gain importance. The research aims to determine potential recreation areas by considering the natural and physical characteristics of the Adana Province Cukurova district. The criteria and importance weights of the criteria related to the natural and physical characteristics of Cukurova district, which is the research area, were determined by Analytic Hierarchy Process (AHP) technique. The data layers of the criteria were overlapped using the “Weighted Linear Combination Technique” in ArcMap program using the importance weights and a map of potential recreation areas was created. The results show that 2.6% of the region has low, 72.2% has medium, and 25.2% has high recreational potential. The western part of Seyhan Dam Lake has been identified as the most suitable area for recreation. Providing a holistic green space system will enable the development of the city’s natural potential. In addition, the areas proposed to be planned as recreational areas will contribute to urban ecosystem services and improve the quality of urban life. To define recreational suitable areas provides effective and quick solutions to manage urban sprawl on ecological. (Referee 1).

Effect of different indole butyric acid (IBA) concentrations in various rooting media on the rooting success of loropetalum chinense var. Rubrum yieh cuttings and its modeling with artificial neural networks

Wed, 01 Jan 2025 00:00:00 GMT

Effect of different indole butyric acid (IBA) concentrations in various rooting media on the rooting success of loropetalum chinense var. Rubrum yieh cuttings and its modeling with artificial neural networks Oğuztürk, Türker; Alparslan, Cem; Aydın, Yusuf; Öztatar, Umut; Oğuztürk, Gülcay Ercan This study aimed to evaluate the rooting success of Loropetalum chinense var. rubrum Yieh cuttings in three different rooting media: 100% peat, 100% perlite, and a 50% peat–50% perlite mixture. Additionally, three concentrations of Indole Butyric Acid (IBA)—1000 ppm, 3000 ppm, and 6000 ppm—were tested, along with a control group consisting of non-hormone-treated cuttings. The chlorophyll content of the leaves was measured in µmol/m2, and its relationship with rooting success was examined. Measurements were conducted every 15 days over a 120-day period. The collected data were analyzed using both an artificial neural network (ANN) and SPSS 29.0.2 statistical software. Results indicated that perlite medium yielded the highest rooting rate and chlorophyll concentration, whereas the peat medium performed the poorest. While 1000 ppm IBA led to the greatest improvement in rooting rate, 6000 ppm resulted in the highest chlorophyll concentration. The highest chlorophyll levels were observed during measurement periods M7, M8, and M9. Analyses of peat moisture and pH indicated that the physicochemical properties of the rooting media significantly influenced cutting development. This study aims to support the identification of optimal propagation methods for this species and to contribute to the literature by developing an ANN model based on the measured parameters.