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    Öğe
    Effect of environmental factors on species diversity of the Yenice Hot Spot Forests in Turkey
    (Northeast Forestry Univ, 2018) Turkis, Sevda; Elmas, Emire
    We quantified the diversity of vascular plant species and described soil properties and topographical and climatic conditions of the Citdere and Kavakli Nature Reserves in the Yenice Forest of Turkey. We used the Shannon-Weiner and Simpson's indices of diversity, Margalef's index of species richness and Pielou's evenness index to quantify the structure of vascular plant assemblages. We measured soil parameters (NO3-, NH4+, available P, Mg++, K+, Na+, Ca++, organic matter, pH, soil moisture), elevation, slope gradient and aspect and their correlations with plant community parameters. In total, we recorded and identified 207 species and subspecies in the study area. Species cover, richness and diversity indices varied significantly by vegetation type (P < 0.01). Available NO3- and Ca++ in the soil were important factors for the area and species representation in the species-environment correlations estimated for the Kavakli area. Available NO3-, pH, organic matter, Ca++ and K+ in the soil were important factors for the area and species representation in the species-environment correlations analysed for the Citdere area.
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    Floristic Composition, Life Form and Chorotype of Safranbolu -Tokatli Canyon's
    (Kahramanmaras Sutcu Imam Univ Rektorlugu, 2018) Turkis, Sevda; Elmas, Emire
    In this study, it was aimed to determine the floristic composition of Tokatli Canyon in North West Anatolia. Plant samples were collected for two seasons. The family, life form and the floristic regions of the plant specimens were identified. A total of 102 taxa found in total belonging % 10 (10) to Asteraceae, 7% (7) to Labiatae, 7% (7) to Poaceae, 6% (6) to Ranunculaceae, 6% (6) Rosaceae and 65% (66) to other families. According to the distribution of life form, the highest rate was 58% (59), belonging to hemicriptophyte form. Among the identified species, the largest proportion of species belonged to pluriregional or unknown floristical region with 50% (51), with 31% (32) of the Euro-Siberian, 11% (11) of the Mediterranean and 8% (8) of the Irano-Turanian territory. This study is the first floristic study of Tokatli Canyon showing importance of canyon in terms of plant diversity. In the study area, 8 endemic taxa were identified constituting 7.8% of total flora. Tokatli Canyon consists of 50 families, 94 genera and 102 taxa.
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    Öğe
    Hedera helix L. Türünün Sürünücü ve Tırmanıcı Kısımlarında Bazı Pigment ve Antosiyanin İçeriklerinin Karşılaştırılması
    (2019) Elmas, Emire; Turkis, Sevda
    Hedera helix L. yaprak döken orman ekosistemlerinin önemli türlerinden birisidir. Yenice Ormanları’nda bulunanKavaklı Tabiatı Koruma Alanı’nda tırmanıcı özelliğinin dışında yoğun bir yer örtücü (sürünücü) özellik desergilemektedir. Bu çalışmada, Kavaklı Tabiatı Koruma Alanı’nda yayılış gösteren H. helix türünün sürünücü vetırmanıcı kısımlarının yaprak ve gövdelerinde bazı bitki pigmentleri (klorofil-a, klorofil-b, Kl-a/Kl-b, karotenoidve antosiyanin) açısından fark olup olmadığının araştırılması amaçlanmıştır. Üç farklı bitki bireyinden yaprak vegövde örnekleri toplanmış ve 1 g taze örnek kullanılarak ekstraksyon işlemi yapılmıştır. Klorofiller için 645, 662nm ve karotenoid için 470 nm’deki absorbanslar ölçülmüştür. Antosiyanin miktarını belirlemek için 1 g yaprakörneği 12 ml metanol/HCl (99/1) içerisinde 24 saat +4 0C’de inkübe edilerek 530 ile 657 nm’deki absorbanslarölçülmüştür. Sonuçların değerlendirilmesinde tek yönlü varyans analizi (ANOVA) ve Tukey testi kullanılmıştır.Buna göre, sürünücü ve tırmanıcı bitki kısımlarının yaprak ve gövdeleri arasında Kla, Klb, Kla/Klb ve karotenoidiçerikleri açısından istatistiksel olarak bir farklılık bulunmamıştır. Antosiyanin içeriği açısından farklı bitkikısımlarına ait gövdeler arasında önemli bir farklılık bulunmazken, tırmanıcı kısımlardaki yapraklarda sürünücükısımların yapraklarına göre anlamlı düzeyde daha yüksek olduğu tespit edilmiştir (P<0,05). Elde edilen bulgular,yaprak döken orman ekosistemlerinde farklı orman katlarında bulunan H. helix türünün hem sürünücü formda hemde tırmanıcı formda biyomas ve oksijen üretimi açısından benzer etkililikte katkı sağladığını göstermektedir.
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    Relationship Between Plant Strategy Types and Soil Characteristics in Backdunes and Foredunes
    (Springer, 2025) Elmas, Emire; Turkis, Sevda; Bani, Baris
    Dune ecosystems support limited plant diversity under harsh conditions. This study examines the distribution of competitor, stress tolerator, and ruderal (CSR) strategies in foredune and backdune areas and their relationships with soil variables. Seasonal variations in soil properties and plant strategy types were assessed using canonical correspondence analysis (CCA) and similarity percentage analysis (SIMPER). The Bray-Curtis similarity index showed a 67% dissimilarity between foredune and backdune plant strategies. Most soil variables exhibited significant seasonal changes (p < 0.05), except phosphorus (P) and calcium carbonate (CaCO3). Competitive and stress-tolerant species were positively associated with pH, salinity, and CaCO(3 )but negatively correlated with total nitrogen (TN), phosphorus (P), potassium (K), and moisture. In contrast, ruderal and mixed CSR species were linked to higher nutrient levels and moisture. Our findings highlight the adaptive resilience of dune species and the influence of soil conditions on plant community structure. Even without external disturbances, species well-adapted to harsh dune conditions can dominate, illustrating the dynamics of dune succession.
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    The Effects of Rock Chemistry and Ecological Factors on Plant Diversity in the Tokatli Canyon of Turkey
    (Pleiades Publishing Inc, 2020) Turkis, Sevda; Elmas, Emire; Ozyurt, Merve
    Species diversity, edaphic and geological rock properties were investigated in the Tokatli Canyon. Quercus infectoria-Platanus orientalis was identified as the plant community with the highest species diversity and richness. High concentrations of NH4+ and NO3- were found in moderately sloping areas in the north-east in the Tokatli Canyon. Available P contents tend to increase towards the Mediterranean communities. Arbutus andrachne-Cistus creticus plant communities, found in the study area (especially on central and higher slopes of the canyon) are an example of Mediterranean relict groupings formed by Mediterranean plants. In Canonical Correspondence Analysis (CCA) available P, pH, K+, Mg++, EC and NO3- in the soil and TiO2, Al2O3, MgO and K2O in the rock are the factors affecting species diversity and distribution in the Tokatli Canyon area.
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    TREE SPECIES DIVERSITY AND IMPORTANCE VALUE OF DIFFERENT FOREST COMMUNITIES IN YENICE FORESTS
    (Parlar Scientific Publications (P S P), 2018) Turkis, Sevda; Elmas, Emire
    For the calculation of each kind of important value index is used to the number of individuals of the species, the number of species and the total number of individuals. This study is carried out for 24 localities in Kavakli and Citdere Nature Reserves Area's mixtured and pure beech and oak forests in Yenice Forests between 2014-2016. Changes in floristic composition were analyzed using the Importance Value index (IVI), calculated for each of the tree species. According to the results of the important value of Kavakli Nature Reserves Area (NCA) in forested areas Abies nordmanniana (Stev.) Spach subsp. bornmulleriana (Mattf.) Coode et Cullen (157.08 %) is a dominant species. According to the results of the important value index of Citdere Nature Reserves Area in forest area Fagus orientalis L. (%145.1) is dominant species. The tree species diversity and the richness parameters are important in terms of Evenness at P <0, 05 in the field of Kavakli. The maximum effect of the species settlement within the area is provided with precipitation, slope aspect and soil moisture. The increase of the species richness of trees causes the increase of species diversity in the field of the Kavakli and Citdere areas.