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Öğe Anti-quorum sensing and anti-biofilm activity of Viscum album L. on different pathogenic bacteria(Elsevier Science Bv, 2016) Kenar, Nihal; Erdönmez, Demet; Türkmen, Kübra Erkan[Abstract Not Available]Öğe Climatic drivers of ecological divergence among the genera of the tribe Stipeae in Turkey(Elsevier GmbH, 2020) Kenar, Nihal; Kikvidze, Z. I.The species from the tribe Stipeae Dumort. dominate Eurasian grasslands including Anatolian steppes. In Turkey, the genera of the Stipeae show distinct patterns of regional distribution, leading to a combination of dispersal and adaptive radiation. However, the importance of climatic gradients to regional distribution of these genera of the Stipeae has not yet been examined, and the aim of our study was to address this need. We retrieved data on the presence of three genera of the Stipeae, and morphological traits of its member species in Anatolia from available literature. We also acquired data on bioclimatic variables from the WorldClim database. We used multivariate methods (PCA) and correlation analysis to describe the major climatic gradients within the distribution area of the Stipeae in Anatolia. Links between the major climatic gradients and the divergence of the genera were examined using the method of Spatial Evolutionary and Ecological Vicariance Analysis (SEEVA). Possible relationships between the genera of the Stipeae and climatic and geographic variables were also examined by means of Canonical Correspondence Analysis (CCA). Our results suggest that elevation and temperature are the key factors for the ecological divergence of the genera in the tribe Stipeae in Turkey.Öğe Climatic drivers of woody species distribution in the Central Anatolian forest-steppe(Academic Press, 2019) Kenar, NihalForest-steppes build up an important mosaic of habitats in Central Anatolia, yet little is known about these woody communities. The objective of our study was to reveal the climatic drivers of the regional distribution of woody species within Central Anatolia. We analyzed 497 vegetation records from forest-steppe habitats gathered during previous phytosociological surveys. We used multivariate analyses to establish the climatic and geographic gradients, and to examine the distribution of forest-steppe plant species along these gradients. We found a strong latitudinal gradient in our climatic data across Central Anatolia: summer temperatures decreased and annual precipitation increased with increasing latitude. Dominant woody plants were species of Quercus with distinct patterns of distribution across the observed climate gradient. Woody communities appeared to separately concentrate in the two subregions, northern and southern, under different climatic conditions. Species richness was dissimilar between these two groups and the southern communities under hotter and drier conditions were less species-rich. We conclude that, even though Central Anatolia is perceived as an example of a generally semi-arid and continental vast grassland region, subregional differences in climate strongly shape the composition of woody species in local communities.Öğe Evaluation of anti-quorum sensing activity of Elaeagnus angustifolia L. extracts from Central Anatolia(Elsevier, 2016) Erdönmez, Demet; Kenar, Nihal; Erkan Türkmen, Kübra[Abstract Not Available]Öğe Forecasting impacts of climate and land-use change on Vallonea oak (Quercus ithaburensis subsp. macrolepis) based on the ensemble modeling(Taylor and Francis Ltd., 2024) Kenar, NihalAlthough Mediterranean species demonstrate a strong ability to survive in degraded and arid environments, it is crucial to acknowledge the significant influence that climate change can have on them. Woodlands dominated by Quercus ithaburensis subsp. macrolepis are part of an agroforestry system in the Mediterranean region, hence, the potential changes in its distribution were investigated under future climate and land-use change scenarios through species distribution modeling. The modeling results show that the suitable habitats for the species are mainly concentrated in Greece and the west of Anatolia, which are already natural ranges. In addition, climate has a higher influence on the thriving strength and distribution of the species than land-use, with temperature being the primary factor driving these effects. Therefore, the distribution of the species is predicted to undergo small declines in suitable habitats and to be more influenced by climate change than the combination of land-use and climate change in case of minor temperature increases. However, the synergistic influence of land-use and climate change is expected to have a more adverse impact on the distribution of the species than climate change alone in case of major temperature changes, thus leading to a more significant decrease in the species’ habitats.Öğe Modelling the distribution of the Caucasian oak (Quercus macranthera) in Western Asia under future climate change scenarios(Institute of Botany and Botanical Garden "Jevremovac", University of Belgrade, 2023) Kenar, Nihal; Kikvidze, ZaalThe Caucasian oak (Quercus macranthera), a native tree of Western Asia, typically grows at high altitudes where the effects of climate change are particularly notable. We analysed the climatic determinants of the current distribution of Q. macranthera and assessed the redistribution of areas suitable for this species as a consequence of climate change. We described the current range of distribution and predicted the potential geographical distribution of the Caucasian oak using species distribution models and five algorithms from two Shared Socio-Economic Pathways (SSPs: SSP 1?2.6 and 5?8.5) for the years 2035, 2055, and 2085, which are based on two General Circulation Models (GCMs). The Random Forest algorithm most accurately described the current distribution of Q. macranthera. SSP 1?2.6 and SSP5?8.5 predicted a pronounced contraction of the highly suitable habitat for the Caucasian oak due to the increase in temperatures and changes in seasonal precipitation dynamics, that more intensive climate change could lead to a greater loss of highly suitable habitats, and that the populations of Q. macranthera could survive only in the Alborz Mountains (northern Iran) and in the Great Caucasus Mountains. Our work helps to establish conservation strategies for species monitoring in order to minimise the potential impacts of climate change.Öğe Notes and contributions on the flora of Melendiz Mountains and its surroundings (Niğde, Turkey)(Herbarium Mediterraneum Panormitanum, 2014) Kenar, NihalThis research focuses on the flora of Melendiz Mountains and its surroundings, situated in the province of Ni?de in Central Anatolia, entirely within the Irano -Turanian phytogeographic region. In the area, 498 taxa belonging to 58 families, and 244 genera were determined. The families with the most taxa in the research area are Asteraceae (67 taxa), Fabaceae (51 taxa) Poaceae and Lamiaceae (41 taxa), Caryophyllaceae (38 taxa), Brassicaceae (23 taxa), Apiaceae (20 taxa), Boraginaceae (21 taxa), Rosaceae (16 taxa). Concerning the number of species, the major genera in this region are as follows: Astragalus (11), Veronica (10), Silene (9), Trifolium (9), Centaurea (7), Ranunculus (7), Minuartia (7), Lathyrus (7). According to the life forms, hemicryptophytes come first with a rate of 45.58% in the region, followed by therophytes (27.71%), cryptophytes (10.84%), chamaephytes (10.04%), phanerophytes (4.81%) and vascular parasites (1.00%). The distribution rates of phytogeographic elements are as follows: Irano -Turanian 24.09%, Mediterranean 9.23%, Euro -Siberian 4.61% and others 62.04%. The number of endemic taxa is 73 (the endemism rate is 14.6%) in the study area. The 22 taxa are new records for square B5 and 1 taxon is for square C5.Öğe Phytosociological investigations of steppe and steppe forest vegetation in the south-east part of Central Anatolia of Turkey(İstanbul Üniversitesi, 2017) Kenar, NihalTo gain a better understanding of the ecological systems, it is necessary to study the development, composition, and classification of the steppe and steppe forest communities, which are the primary components of phytocoenoses in semi-arid environments. Therefore, this study was aimed to contribute to a syntaxonomic classification of the Central Anatolian steppe and steppe forest vegetation. The Braun–Blanquet approach was used to analyze the vegetation of the study area in Göllüdağ (2172 m a.s.l.) located in the north of Niğde province. The vegetation data were analyzed using cluster analysis and detrended components analysis. The relationships between the communities and certain environmental factors were examined by principal components analysis. Two new steppe and steppe forest communities in Central Anatolia were classified in this study. The steppe communities were included in Agropyro tauri-Stachydion lavandulifoliae and Astragalo-Brometalia, whereas the steppe forest communities were classified as Quercion anatolicae and Querco cerridis-Carpinetalia orientalis.Öğe Predicting the effect of climate change on the geographic distribution of the endemic Fritillaria aurea in Türkiye(Abdullah KAYA, 2024) Kenar, Nihal; Tekşen, MehtapFritillaria aurea is a rare, high altitude, endemic, and bulbous plant species in Türkiye. Although it is classified as least concern according to IUCN criteria, the species has a narrow distribution. This study utilized ensemble modeling to forecast potential future changes in suitable habitats for F. aurea by two Shared Socio-Economic Pathways (SSPs: SSP 1-2.6 and 5-8.5). These pathways were constructed using two General Circulation Models (GCMs) and covered the years 2035, 2055, and 2085. The results showed that the minimum temperature of the coldest month (bio6), mean temperature of the wettest quarter (bio8), and precipitation of the warmest quarter (bio18) have the largest influence on the potential species distribution. The ensemble model predicted that the highly suitable habitats of F. aurea would contract under all future SSP scenarios and it would lose almost all of its potential highly suitable distribution areas by the end of the century. The remained population of F. aurea could possibly harbour in only minor areas of the North Anatolian Mountains in the north and Taurus Mountains in the south. The results of the study could contribute to establishing conservation strategies and natural resource management policies for F. aurea against the potential impacts of climate change. The highly suitable habitats under pessimistic scenarios at the end of this century projected by the present study can be determined as protected areas for the species.Öğe Predicting the effect of climate change on the geographic range of the Mediterranean relict tree Liquidambar orientalis Mill(John Wiley and Sons Inc, 2024) Kenar, NihalClimate change is anticipated to pose a significant danger to the habitats and spatial distribution of species in the Mediterranean region throughout the present century. The primary objective of this study was to predict the future geographic range of Liquidambar orientalis, commonly known as the oriental sweetgum under different climate change scenarios. This species is a relict riparian Mediterranean plant originating from the southwestern Anatolia region and Rhodos Island in Greece. To gain insights into the potential effects of climate change on the range of L. orientalis in the future, I used an ensemble modeling approach of species distribution models based on the shared socioeconomic pathways (SSP1-2.6 and SSP5-8.5 for the years 2035, 2055 and 2070). The models suggested that the level of precipitation during the wettest month has a crucial role in determining the occurrence of the oriental sweetgum tree. Future projections indicate that the oriental sweetgum will significantly contract its native distribution range due to warming and declining precipitation levels. The population of L. orientalis has previously undergone a decrease as a result of anthropogenic activity. Therefore, it is imperative to augment the degree of urgency in conservation endeavors for the oriental sweetgum species against the ramifications of human-induced actions and the persistent effects of climate change.Öğe The phytosociology of Melendiz Mountain in the Cappadocian part of Central Anatolia (Nigde, Turkey)(Gebruder Borntraeger, 2016) Kenar, Nihal; Ketenoğlu, OsmanAim and study area: This paper deals with the phytosociology of the vegetation of Melendiz Mountain (2963 m) located in Central Anatolia. Methods: Steppe, deciduous forest, shrub and xero-mesic meadow vegetation of the subalpine zone of Melendiz Mountain were analysed according to Braun-Blanquet approach. Additionally by applying cluster analysis and ordination (Detrended Correspondence Analysis), the phytosociological units were described and verified. Results and conclusions: Three associations in the study area characterize the shrub and degraded forest vegetation. These are included in the alliance Quercion anatolicae, which is distributed in the peripheral zone of the Central Anatolian basin, and the order Querco cerridis-Carpinetalia orientalis (Quercetea pubescentis), which includes the deciduous and coniferous forests in the supra Mediterranean zone of Anatolia. The xeromorphic dwarf grassland vegetation is represented by two associations. One of them is classified in the alliance Agropyro-Stachydion (order Astragalo-Brometalia, class Astragalo-Brometea) covering oreal to subalpine xerophytic grasslands, dwarf-shrub, and thorn cushion communities in the Taurus range. The xero-mesic meadow vegetation is characterized by an association within the order Trifolio anatolici-Polygonetalia arenastri (Astragalo-Brometea) and contains snowpatch and meltwater communities of the mesophytic vegetation on Taurus range.Öğe The phytosociology, ecology, and plant diversity of new plant communities in Central Anatolia (Turkey)(Sciendo, 2020) Kenar, Nihal; Şekerciler, Fatoş; Çoban, SüleymanThe Central Anatolian vegetation has diverse site conditions and small-scale plant diversity. For this reason, identification of plant communities is important for understanding their ecology and nature conservation. This study aims to contribute the syntaxonomical classification of the Central Anatolian vegetation. The study area is situated among Güzelyurt, Narköy, and Bozköy (Ni?de) in the east of Aksaray province of Central Anatolia in Turkey. The vegetation data were collected using the phytosociological method of Braun-Blanquet and classified using TWINSPAN. The ecological characteristics of the units were investigated with Detrended Correspondence Analysis. Three new plant associations were described in the study. The steppe association was included in Onobrychido armenae-Thymetalia leucostomi and Astragalo microcephali-Brometea tomentelli. The forest-steppe association was classified under Quercion anatolicae in Quercetea pubescentis. The riparian association is the first poplar-dominated one described in Turkey and, classified under Alno glutinosae-Populetea albae and its alliance Populion albae.
