Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Skip to main content

    Ali Çelik

    The genus Thlaspi has been variously subdivided since its description by Linnaeus in 1753, but due to similarities in fruit shape several segregates have still not gained broad recognition, despite the fact that they are not directly... more
    The genus Thlaspi has been variously subdivided since its description by Linnaeus in 1753, but due to similarities in fruit shape several segregates have still not gained broad recognition, despite the fact that they are not directly related to Thlaspi. This applies especially to segregates now considered to belong to the tribe Coluteocarpeae, which includes several well‐studied taxa, e.g., Noccaea caerulescens (syn. Thlaspi caerulescens), and the widespread Microthlaspi perfoliatum (syn. Thlaspi perfoliatum). The taxonomy of this tribe is still debated, as a series of detailed monographs on Coluteocarpeae was not published in English and a lack of phylogenetic resolution within this tribe was found in previous studies. The current study presents detailed phylogenetic investigations and a critical review of morphological features, with focus on taxa previously placed in Microthlaspi. Based on one nuclear (ITS) and two chloroplast (matK, trnL‐F) loci, four strongly supported major gr...
    Research Interests:
    Research Interests:
    This paper emphasizes urban ecological characteristics of Kusadasi in the light of environmental problems. Demographic situation of the city has changed much since 1945 when population of permanent residents was around 5.200, it has gone... more
    This paper emphasizes urban ecological characteristics of Kusadasi in the light of environmental problems. Demographic situation of the city has changed much since 1945 when population of permanent residents was around 5.200, it has gone up to 35.000 today (1993). During summer period population touches a level of 350.000 As a result of this general and seasonal population outburst urbanization, infrastructure and fires are increasing theirby posing a great threat for natural plant cover. Production of crop species and areas of agricultural land in particular olive plantations are decreasing at a fast pace.
    1999-2001 yillarinda, Tavas Ilcesinde (Denizli) yapilan arazi calismalarinda makrofungus ornekleri toplanmistir. Arazi ve laboratuar calismalari sonucu 21 familyaya ait 45 takson teshis edilmistir. Bunlardan 95u Ascomycetes ve 36’si Bas... more
    1999-2001 yillarinda, Tavas Ilcesinde (Denizli) yapilan arazi calismalarinda makrofungus ornekleri toplanmistir. Arazi ve laboratuar calismalari sonucu 21 familyaya ait 45 takson teshis edilmistir. Bunlardan 95u Ascomycetes ve 36’si Bas idiomycetes sinifina aittir.
    In this study, roadside plants distributed throughout the link roads of all the cities in West Anatolia in Turkey were investigated. The length of the selected 17 roads is around 2700 km. The total number of samples collected from the... more
    In this study, roadside plants distributed throughout the link roads of all the cities in West Anatolia in Turkey were investigated. The length of the selected 17 roads is around 2700 km. The total number of samples collected from the study area is 271 taxa belonging to 57 families. Among them, Asteraceae, Fabaceae, Poaceae are the families that have the largest number of taxa, and Bromus L., Rumex L. and Silene L. are the genera that have the largest number of taxa. The most frequently found taxon throughout the selected roads is Valerianella coronata (L.) DC. and therophytes are the most frequently found life form.
    Fatty acid compositions of the seed oils of H. thermophilum Kit Tan, A. Celik & Y. Gemici, sp. nova, H. europaeum L., and H. hirsutissimum L. (Boraginaceae) were analyzed by GC/MS. The main fatty acid methyl esters were determined to be... more
    Fatty acid compositions of the seed oils of H. thermophilum Kit Tan, A. Celik & Y. Gemici, sp. nova, H. europaeum L., and H. hirsutissimum L. (Boraginaceae) were analyzed by GC/MS. The main fatty acid methyl esters were determined to be of palmitic (39.8–40.6%), linoleic (32.4–33.2%), oleic (10.6–12.1%) and stearic acids (7.9–8.5%). γ-Linolenic acid was found to be a minor component of the seed oils of the reported species. This is the first chemical report on the fatty acid composition of H. thermophilum, along with chemotaxonomic evaluation of the species.
    Abstract Quaternary climatic oscillations had strong effects on Palearctic biodiversity. Although Transcaucasia is hypothesised to be a centre of diversity for many taxa, relatively few studies have investigated its potential role as... more
    Abstract Quaternary climatic oscillations had strong effects on Palearctic biodiversity. Although Transcaucasia is hypothesised to be a centre of diversity for many taxa, relatively few studies have investigated its potential role as such, or as a Pleistocene refugium. Using AFLP and sequence data (ITS, matK, trnL-F) from samples collected across the entire range of Microthlaspi perfoliatum, from the Iberian peninsula to Kazakhstan, and including the Mediterranean Basin and Central Europe, in this study it is examined how the interplay of Pleistocene climatic oscillations and historical demography may have shaped the current genetic structure of the species. The results of this study provide evidence that M. perfoliatum survived Pleistocene glaciation in five major refugia, Iberia, southwestern France, Italy, the Balkans and Anatolia/Transcaucasia and a sixth, unknown refugium in the disjunct distribution area in Central Asia. Our analyses support an ancient colonisation of M. perfoliatum towards the western and central Palearctic, perhaps, during the early Pleistocene or late Pliocene, likely starting from Transcaucasia. However, postglacial recolonisation of western and Central Europe has taken place from two distinct refugia, namely southwestern France/northern Italy, and Anatolia/Southern Balkans, respectively. The Iberian populations apparently did not contribute to postglacial recolonisation of Europe, perhaps because the Pyrenees acted as a significant barrier to dispersal. It is also conceivable that a rapidly expanding population from southwestern France and the southeastern part of the range effectively blocked the establishment of latecomers. The present study thus reveals a complex pattern of colonisation of Europe from Transcaucasia, with an interplay of climate and physical geography as main factors shaping the present-day genetic structure of M. perfoliatum.
    Iris L. is one of the important genus of family Iridaceae, consist of 56 taxa naturally occurred in Turkey. The similarities and variations in the subgenus overlapping the taxonomic positions of the species in the subgenera and needs... more
    Iris L. is one of the important genus of family Iridaceae, consist of 56 taxa naturally occurred in Turkey. The similarities and variations in the subgenus overlapping the taxonomic positions of the species in the subgenera and needs anatomical assessment especially by microscopic techniques. In this study, the taxonomic significance of leaf anatomical characters of 10 Iris subgenus Scorpiris taxa were studied in detail and the relationship among these taxa were evaluated using microscopy techniques. Fresh leaf samples of species were fixed in 70% alcohol solution for anatomical observation under microscope. Eleven different micromorphological features were statistically analyzed to delimit the species in subgenus. Based on morphological and anatomical similarities, we studied relationships among; (1) ssp. turcica, ssp. caucasica, I. nezahatiae and I. pseudocaucasica; (2) correlation between ssp. turcica and ssp. caucasica; (3) association of I. galatica, I. persica, ssp. margaretiae and ssp. stenophylla with each other; (4) relationship between ssp. stenophylla and ssp. margaretiae; and (5) relevance between I. aucheri and I. peshmeniana. Moreover, the taxonomy of subgenus Scorpiris has been discussed in detail with novel and diagnostic features based on micromorphological physiognomies. We found that four species in this study are endemic to Turkey, while seven are critically endangered geophytes in the country. The leaf anatomical characteristics of 10 taxa were divided into three groups. Main aim of this research was to study the taxonomy of the complex subgenus Scorpiris through microscopic techniques.
    Abstract In present research work, 14 species belonging to 5 genera of subfamily Caryophylloideae (Caryophyllaceae) has been investigated for foliar epidermal anatomy using light microscope (LM). This study revealed that the... more
    Abstract In present research work, 14 species belonging to 5 genera of subfamily Caryophylloideae (Caryophyllaceae) has been investigated for foliar epidermal anatomy using light microscope (LM). This study revealed that the micro-morphological features of subfamily are taxonomically significant in accurate identification of species. The plant species were collected from different phytogeographical regions of Pakistan and studied for both qualitative and quantitative characteristics. Both upper and lower epidermis of the leaf has been studied and various micro-morphological characters examined including; shape of epidermal cells, anticlinal wall pattern, lobes per cell, type of stomata and trichomes. Out of 14 species, 8 have trichomes i.e. unicellular, multicellular and non-glandular. Twelve species have diacytic type of stomata, while two species Silene pseudo-verticellata and Vaccaria hispanica has anomocytic type of stomata. Keep in viewing of foliar epidermal characteristics and its diagnostic features taxonomic keys has been developed for easy and quick identification of species. The main objective of this research is to study qualitative and quantitative characters for the correct identification and species delimitation in subfamily Caryophylloideae. The foliar epidermal anatomy of subfamily shows valuable systematics information for identification of different species. The present findings of the foliar epidermal features are of special interest for plant taxonomists for the correct identification of species in subfamily Caryophylloideae (Caryophyllaceae). The micro-morphological features of foliar epidermal anatomy show many novel characters for accurate taxonomic identification and provide baseline information to plant taxonomists for further study.
    Ecological relationships of some Iris taxa belonging to subgenera Hermodactyloides (I. danfordiae, I. histrio subsp. aintabensis, I. histrio subsp. histrio, I. reticulata, I. bakeriana, I. pamphylica) and Scorpiris (I. aucheri and I.... more
    Ecological relationships of some Iris taxa belonging to subgenera Hermodactyloides (I. danfordiae, I. histrio subsp. aintabensis, I. histrio subsp. histrio, I. reticulata, I. bakeriana, I. pamphylica) and Scorpiris (I. aucheri and I. persica) have been compared and relationships between taxa have been determined. These taxa are geophytes and flower in Spring. I. danfordiae, I. pamphylica and subsp. aintabensis are endemic to Turkey. I. reticulata and I. persica have widespread distribution while I. aucheri, subsp. aintabensis, subsp. histrio, I. pamphylica and I. bakeriana have restricted distribution in Turkey. Soil samples of the taxa were collected during flowering periods and physical and chemical properties (texture class, total salinity %, pH, CaCO3 %, organic matter %, N %, P kg/da, K kg/da, Ca , Mg, Mn, Cu, Fe and Zn ppm) were determined. The correlations between the soil analyses and taxa were evaluated using regression analysis. The P and…
    The oriental sweetgum, Liquidambar orientalis Mill. is a tertiary period relict endemic taxon of the east Mediterranean. The flat deep hydromorphic soils rich in surface waters during summer months are the most productive sites for the... more
    The oriental sweetgum, Liquidambar orientalis Mill. is a tertiary period relict endemic taxon of the east Mediterranean. The flat deep hydromorphic soils rich in surface waters during summer months are the most productive sites for the dense stands of L. orientalis. It is mainly distributed on sandy soils, with an alkaline pH. The CaCO3 content in the soils show a medium value and the percentage of total salt content is very low, but organic matter content is higher. The monoecious trees are on an average 15–20 m tall and form dense forests confined to floodplains, valleys and along streams and in a few dry habitats. The plant shows a typical leaf dimorphism with sparsely lobed leaves at the top and many lobed leaves on the lower parts. Fresh seeds germinate well and the percentage varies from 60 to 80. A syntaxonomical synthesis of these forests was carried out. All associations of L. orientalis including the newly defined Querco ilicis-Liquidambaretum orientalis association have b...
    Ethnobotanical studies which aim to shed light on local human-plants interactions in the Buldan area of Denizli, began in November 2002 and continued in 2003 with the support of the Social Sciences and Humanities Research Fund of the... more
    Ethnobotanical studies which aim to shed light on local human-plants interactions in the Buldan area of Denizli, began in November 2002 and continued in 2003 with the support of the Social Sciences and Humanities Research Fund of the Scientific and Technical Research Council of Turkey (TUBITAK) and the Turkish Academy of Sciences (TUBA). Ten fieldtrips carried out during April- December 2003, and a total of forty-one work-days in the field devoted to the study by a team of six researchers alternately. During this time period interviews were made with about 130 informants within Buldan and its surrounding villages, and more than 300 plant samples with its related information were collected. A total of 258 species (of which 21 are endemic to Turkey) were identified among 450 specimens that collected in 2002 and 2003. Among the sampled plants 98 food, 108 medicinal, 41 fodder, 38 handicraft, 11 fuel, and about 45 plants with various uses were recorded. Several plants have more than one...