TAILIEUCHUNG - Detection of some woody plants in Late Oligocene forests of İstanbul
A paleopalynological study was performed on the fossilized pollen found in the coal and clay layers of the Akçelik Coalmine, which is one of the open lignite quarries located at the northern part of İstanbul, and 15 genera belonging to 14 families were identified from the late Oligocene of İstanbul. | Research Article Turk J Agric For 33 (2009) 577-584 © TÜBİTAK doi: Detection of some woody plants in Late Oligocene forests of İstanbul Nurgül KARLIOĞLU1,*, Ünal AKKEMİK1, Hülya CANER2 1İstanbul University, Faculty of Forestry, Department of Forest Botany, 34473 Bahçeköy, İstanbul - TURKEY 2İstanbul University, Institute of Marine Sciences and Management, 34116 Vefa, İstanbul - TURKEY Received: Abstract: A paleopalynological study was performed on the fossilized pollen found in the coal and clay layers of the Akçelik Coalmine, which is one of the open lignite quarries located at the northern part of İstanbul, and 15 genera belonging to 14 families were identified from the late Oligocene of İstanbul. Of these 14 families, 4 families belong to Gymnospermae, and 10 of them belong to Angiospermae. In the study, of pollen is arboreal (AP) (woody plants), is non-arboreal (NAP) (herbal plants), and rest of them () could not be identified. The middle coal layer has a significant number of pollen grains. While lower part of the middle coal layer is mainly represented by broad-leaved tree pollen and its upper part is mainly Juniperus. A clear change from plants of humid conditions to the plants of drier conditions is observed. The lower number of pine pollen grains shows that there was no forest of this genus in that site. Sequoia and Taxodium, which had wide forests during Oligocene but are completely disappeared at present, are represented with low number of pollen grains in that time. Key words: İstanbul, Juniperus, Late Oligocene, Paleopalynology, Sequoia, Taxodium İstanbul’un Geç Oligosen ormanlarını oluşturan bazı odunsu bitkilerin saptanması Özet: Bu araştırmada, İstanbul’un kuzeyinde bulunan açık linyit işletmelerinden biri olan Akçelik Maden Ocağından alınan kömür ve kil örnekleri üzerinde paleopalinolojik bir çalışma yapılmış, Geç Oligosen’de yayılış gösteren 14 familyaya ait 15 cins tespit edilmiştir. Bu .
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