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    ANALYSIS OF HERPETOFAUNAL DIVERSITY OF ISTANBUL ISLANDS WITH THE NEW RECORDS OF THREE LOCALITIES
    (Parlar Scientific Publications (P S P), 2021) Kaya, Nilgun; Tosunoğlu, Murat
    Studies that aim to discover amphibian and reptilian species were conducted in the Istanbul islands which consists of Btiviikada, Heybeliada, Burgazada and Kinaltada, during the years 2016-2019. The latest research of the islands was done 39 years ago and no studies were conducted since then. This study investigated the differences in species of amphibians and reptiles over these years. Bufotes variabilis (Pallas, 1769) from Bilytikada, Hemidactylus turcicus (Linnaeus, 1758) from Heybeliada and Testudo graeca Linnaeus, 1758 from Kinaltada were given as new records from these localities. Principal components analysis (PCA) was applied to analysis the correlation of the amphibian and reptile diversity between Istanbul islands, Marmara islands and mainland. PCI (eigenvalue of 1.91082) was accounted for 45.86 % of the variation. Results of PCA, Podarcis siculus (Rafinesque & Schmaltz, 1810) was observed to display an extant and dominant population in all of the islands. Hierarchical Cluster Analysis was performed to assess the similarity in species among the islands. According to HCA, three cluster groups were formed. Islands of Istanbul have separate groups from other islands and mainland.
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    FOR PAST, PRESENT, AND FUTURE ECOLOGICAL NICHE MODELS, DOES TÜRKIYE SERVE AS A CLIMATE CHANGE SHELTER FOR Lacerta diplochondrodes ?
    (Folium Publ Co, 2024) Kaya, Nilgun; Ozuluo, Oya; Tosunoolu, Murat
    Climate change is a serious threat to biodiversity. In the future, this threat will also determine the distribution of the species. The ecological niche modelling studies enable us to predict suitable habitat areas for each species according to the interaction of climate and taxa in the past, present, and future. The aim of this study was to investigate the possible effects of climate change on the Lacerta diplochondrodes species, which is distributed in Europe and T & uuml;rkiye. Applying the ecological niche model, suitable habitats of the species were projected in the Last Glacial Maximum, current and future. The future climate scenarios in the 2050s and 2070s, we used BCC-CSM1-1, GISS-E2-R, HADGEM2-AO, MIROC5, and MPI-ESM-LR with rcp2.6 and rcp8.5. The suitability of habitats was projected to decrease by 10.56 - 13.53% depending on the scenario with rcp2.6 and by 21.83 - 35.99% depending on rcp8.5 in the future. In future climate scenarios, it is estimated that suitable habitat areas will decrease in Europe, while suitable habitat areas in T & uuml;rkiye will remain largely unchanged. As part of the conservation efforts of this species in Europe, we recommend that monitoring and conservation studies be undertaken as soon as possible. In T & uuml;rkiye, it is recommended that the region from the south of Central Anatolia towards the Aegean region should be studied primarily to minimize habitat loss due to climate change in the future.
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    Genetic and morphometric comparisons of populations of Lacerta diplochondrodes Wettstein, 1952 (Squamata: Lacertidae) in Turkiye
    (Taylor & Francis Ltd, 2023) Kaya, Nilgun; Ozulug, Oya; Tosunoğlu, Murat; Eldem, Vahap
    The diverse climate types and geographical structures across Anatolia result in a high level of species diversity. Among these, the lizard species Lacerta diplochondrodes exhibits several distinct populations, with some of them recognized as subspecies. The primary objective of our study was to investigate whether populations from Thrace and the Western Black Sea region of Turkiye differ from other documented populations. For this purpose, we conducted a comprehensive analysis of genetic and morphometric parameters. For the genetic analysis, we utilized the COI and cyt-b gene regions as molecular markers. Principal Component Analysis (PCA) and Canonical Discriminant Analysis (CDA) were used for the morphometric analyses to differentiate populations. Our findings indicate that a population found in the Bolu region in Western Black Sea region of Turkey differs from the other populations both in morphometric and genetic traits. The L. d. diplochondrodes and L. d. cariensis populations represent sister lineages, and they are both genetically and morphologically only weakly differentiated. These two lineages are therefore referred to as L. d. diplochondrodes. Overall, four different lineages can be distinguished in Turkiye, out of which the lineage of the Western Black Sea region (Bolu lineage) is described for the first time.