Researcher:
Özarslan, Yasemin

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PhD Student

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Yasemin

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Özarslan

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Özarslan, Yasemin

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2015 - 201912020 - 20245

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Researcher Of Publications: search.filters.isAuthorOfPublication.a49ebc28-df5a-457a-9cea-7aa0b1bafffc

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Now showing 1 - 6 of 6
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    Dendroarchaeology in Greece – from humble beginnings to promising future
    (Elsevier Gmbh, 2024) Christopoulou, A.; Elzanowska, A.; Moody, J.; Ważny, T.; Tsakanika, Eleftheria; Department of Archeology and History of Art; Department of Archeology and History of Art; Özarslan, Yasemin; Graduate School of Social Sciences and Humanities; College of Social Sciences and Humanities
    It was back in the early 1960 s when Bryant Bannister recognized the potential of dendrochronological research on wooden cultural heritage in Greece. More than two decades later, in the late 1980 s, P.I. Kuniholm and C.L. Striker started collecting and analyzing tree-ring series from several historical buildings, forests, and archeological sites in Greece and the surrounding Aegean region. Despite highly promising results, especially from the northern and western parts of the country, dendroarchaeology did not attract much attention in subsequent decades. It was only near the end of the 2000 s that dendroarchaeology was reintroduced: first in Crete through the Cretan Dendrochronology Project, and then by another independent project concerning the restoration of a historical building on the island of Euboea. These isolated case studies inspired a five-year systematic research program called the “Balkan-Aegean Dendrochronology Project: Tree-Ring Research for the Study of Southeast-European and East Mediterranean Civilizations” (BAD project). Dendroarchaeological surveys of historical buildings and archaeological sites were conducted throughout Greece with an emphasis on regions that had been previously ignored, such as the southern part of the country and the Aegean islands. Priority was given to buildings under restoration since in such cases original timbers were usually accessible and the architects, structural engineers, and archaeologists in charge were willing to collaborate. Our goals were not only to date timbers or provide information about the species used or the possible origin of the wood, but also to document the date, evolution, interventions and even the construction phases of historical buildings, as well as to help all those interested parties (academics, non-academics, researchers, professionals, local communities, etc.,) see the value of such information and how dendroarchaeology can contribute to the reconstruction of local history and the protection of cultural heritage. Tree-ring analysis led to the development of 18 chronologies from historical timbers and forests for six different species and different areas of the country from remote mountainous areas to small islands across the Aegean. The current dataset covers more than a thousand (1000) years and demonstrates the further potential of dendroarchaeology in the region.
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    Dendrochronological examination of the assumption of the Virgin Mary orthodox church in the village of Pades, Greece
    (ELSEVIER GMBH, 2024) Elzanowska, A.; Tsakanika, E.; Christopoulou, A.; Zny, T. Wa; Özarslan, Yasemin; Graduate School of Social Sciences and Humanities
    The current study is a dendrochronological analysis of the wood from the church of the Assumption of the Virgin Mary, Pades, Greece which was built towards the end of the 18th century according to historical sources. The tree-ring analysis shows that the date, 1784, given on the inscription at the main entrance of the church probably documents the year when the construction works began, and that there were several construction stages of the structural and decorative elements of the church until the early 19th century. Moreover, the oldest (reused) timber elements that were identified through the dendrochronological study date back to the first half of the 15th century and may indicate the first traces of the construction activity in and around Pades. The dendrochronological study enabled the development of three local reference chronologies for the Epirus region. The timespan for the developed chronologies for the church in Pades is: 1262-1825 for Pinus heldreichii (Bosnian pine), 1295-1854 for Pinus nigra (Black pine), and 1571-1767 for Quercus sp. (Deciduous oak).
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    Mapping İstanbul's hammams of 1752 and their employees
    (Berghahn Books, 2015) Department of Archeology and History of Art; N/A; Department of Archeology and History of Art; Ergin, Nina Macaraig; Özarslan, Yasemin; Faculty Member; PhD Student; College of Social Sciences and Humanities; Graduate School of Social Sciences and Humanities; N/A; N/A
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    PublicationOpen Access
    Exploring the past of Mavrovouni forest in the Pindus Mountain range (Greece) using tree rings of Bosnian pines
    (Springer, 2021) Christopoulou, Anastasia; Fyllas, Nikolaos M.; Gminska Nowak, Barbara; Arianoutsou, Margarita; Brandes, Robert; Wazny, Tomasz; Department of Archeology and History of Art; Department of Archeology and History of Art; Özarslan, Yasemin; Graduate School of Social Sciences and Humanities
    Key message Long Bosnian pine chronologies from different mountains are shaped by different climatic parameters and can help identify past drought events and reconstruct landscape histories. We developed a 735-year-long Pinus heldreichii chronology from the southern distribution limit of the species, expanding the available database of long Bosnian pine chronologies. Tree-ring growth was mainly positively correlated with growing degree days (GDD: r(1950-2018) = 0.476) while higher temperatures during both winter and growing season also enhanced growth (T-WT: r(1950-2018) = 0.361 and T-GS: 0.289, respectively). Annual precipitation, during both calendar and water years, had a negative but weaker impact on annual tree growth. The newly developed chronology correlates well with chronologies developed from the neighboring mountains. The years with ring width index (RWI) lower than the average were found to correspond to cool years with dry summers. Still, the newly developed chronology was able to capture severe drought events, such as those in 1660, 1687, and 1725. Several old living trees had internal scars presumably caused by fires. Therefore, old mature trees could be used for fire history reconstruction in addition to climate reconstruction. Although the presence of lightning scars indicates an important natural agent of fire ignition, human activities associated with animal grazing could also be an underlying reason for fires in the region.
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    PublicationOpen Access
    Aegean trees and timbers: dendrochronological survey of the island of Symi
    (Multidisciplinary Digital Publishing Institute (MDPI), 2020) Christopoulou, Anastasia; Gminska-Nowak, Barbara; Wazny, Tomasz; Department of Archeology and History of Art; Department of Archeology and History of Art; Özarslan, Yasemin; Researcher; Graduate School of Social Sciences and Humanities
    The current study presents the results of the first dendrochronological survey performed over the East Aegean island of Symi. Research Highlights: Dendrochronological research of the East Aegean region is of paramount importance since dendrochronological data from the region, and especially the islands, are still limited. Background and Objectives: The main aim of the study is to explore the dendrochronological potential of the island, focusing on the dating of historical wood and buildings as well as dendroprovenancing. Materials and Methods: A total of 57 wood samples were collected from historical timber from windmills and architectural elements, including doors and warehouse planks, while 68 cores were collected from the three dominant tree species of the island—Cupressus sempervirens, Pinus brutia, and Quercus ithaburensis subsp. macrolepis—in an attempt to develop local reference chronologies that could be useful in dating historical timber Results: Of the historical timber, at least nine different species have been detected, with conifers representing the majority of the collected material. In total, 56% of the dendroarchaeological samples, belonging to four different species, were dated absolutely. According to cross-dating and dendroprovenancing results, Pinus nigra, Cedrus sp., and Quercus sp. represent timber imported from present-day Turkey while the fir samples collected from the windmills originate from Central Europe. The use of local timber is also highly probable although it could not be confirmed by the reference chronologies developed for the three dominant tree species of the island. Conclusions: The results of the study reveal the dendrochronological potential of the island from both dendroarchaeological and dendroecological perspectives. The finding that most of the wood was imported mainly from Turkey highlights the importance of timber trade with the Turkish mainland during the mid-18th and 19th centuries. Chronologies developed from living trees could be used in future studies for dating historical material while further research would increase our understanding of past timber trade and the island’s history.
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    PublicationOpen Access
    Dendrochronological analysis and radiocarbon dating of charcoal remains from the multi-period site of Uşaklı Höyük, Yozgat, Turkey
    (Elsevier, 2021) Gminska Nowak, Barbara; D'Agostino, Anacleto; Orsi, Valentina; Christopoulou, Anastasia; Mazzoni, Stefania; Akkemik, Ünal; Wazny, Tomasz; Department of Archeology and History of Art; Department of Archeology and History of Art; Özarslan, Yasemin; Faculty Member; Graduate School of Social Sciences and Humanities
    In the current study we use methods in dendrochronological dating, radiocarbon dating and wiggle-matching analysis to accurately date charcoal samples collected from the archaeological site of Uşaklı Höyük, Yozgat, Turkey. These data contribute to the understanding of the stratigraphical relationships in three different contexts of this multi-period mound. The examined charcoal materials were identified as cedar (Cedrus sp.) and oak (Quercus sp.). The analysis of the cedar samples resulted in establishing a floating chronology with a length of 49 rings. Further analysis of the material revealed that secure dendrochronological dating against the existing reference chronologies cannot be achieved for any of the Uşaklı Höyük samples selected for dendrochronology. This is due to the insufficient length of the developed mean chronology (49 rings), the shortness of single tree-ring sequences (max. 34 rings for cedar and 23 for oak) and the scarcity of reference chronologies that can be used for cross-dating. Therefore, we use radiocarbon tests and wiggle-matching analysis as the main dating method. Radiocarbon testing and further analysis of absolute dating of the charcoal pieces point to three different archaeological periods: the wooden post found in Room 433 of Building III is dated to the range of 1415 – 1363 BCE (2?), confirming the assumption that it was an architectural element of the original construction of this Late Bronze Age/Hittite building. Radiocarbon dating results of charcoal pieces from the filling of Pit 330, 1008 – 905 BCE (2?), can only be used tentatively and require cross-checking against additional samples and other organic material from the same context. The results of radiocarbon dating of charcoal samples associated with the Iron Age stone glacis built on top of Building III (763 – 486 BCE, 2?) confirm that they are associated with the Iron Age occupation at Uşaklı Höyük.