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Journals / Coğrafya Dergisi / 2024 / Sayı: 49

Vegetation History of Karacabey Longoz Forest and Surrounding Area During the Last 250 Years (Bursa, Türkiye)

Karacabey Longoz Ormanı ve Çevresinin Son 250 Yıllık Vejetasyon Tarihi (Bursa, Türkiye)

Nurgül Karlıoğlu Kılıç(Istanbul University-Cerrahpasa, Faculty of Forestry, Department of Forest Botany)
Rüya Yılmaz Dağdeviren(Istanbul University-Cerrahpasa, Faculty of Forestry, Department of Forest Botany)0000-0003-1209-5257
Dilek Aykır(Izmir Katip Celebi University, Department of Geography)0000-0002-2748-4055
Şakir Fural(Ahi Evran University, Department of Geography)0000-0002-1603-2424
Serkan Kükrer(Izmir Katip Celebi University, Department of Ship and Ocean Engineering)0000-0001-6924-3199
Turhan Doğan(TUBITAK National AMS Laboratory, Marmara Research Center)0000-0002-1917-8437
Yunus Emre Mutlu(Sakarya University, Department of Geography)0000-0003-0421-4535
Nurettin Yakupoğlu(Istanbul Technical University, Faculty of Mines)0000-0003-2837-5771
Pages
31–41
Publication Date
2024-12-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Additionally, the increased pollen percentage of anthropogenic indicator species such as Castanea, Olea, Chenopodiaceae, and Poaceae in the upper zone of the pollen diagram indicates that the Longoz vegetation in this region has undergone changes due to human impact since 1850 AD.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, a 24-cm-long sediment core was taken from Poyraz Lagoon located on the northern side of Karacabey district in Bursa, northwest of Türkiye, using KAJAK gravity core sampling.
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Key Findings & Data:The 13δ corrected radiocarbon age was determined as 238±24 BP.
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Conclusion & Impact:Additionally, the increased pollen percentage of anthropogenic indicator species such as Castanea, Olea, Chenopodiaceae, and Poaceae in the upper zone of the pollen diagram indicates that the Longoz vegetation in this region has undergone changes due to human impact since 1850 AD.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Poyraz Lagünü · Karacabey Longoz Ormanı · Polen Analizi

Abstract

In this study, a 24-cm-long sediment core was taken from Poyraz Lagoon located on the northern side of Karacabey district in Bursa, northwest of Türkiye, using KAJAK gravity core sampling. The bottom sediment was dated using one AMS radiocarbon date on bulk organic carbon. The 13δ corrected radiocarbon age was determined as 238±24 BP. Sediment sub-samples were taken at 4-cm intervals along this core, and pollen slides were prepared using the standard method. A total of 250 terrestrial pollen grains were counted in each sediment sample. The aim of this study was to determine the vegetation history of Karacabey Longoz (Floodplain) Forest and its surrounding area, which have diverse habitat mosaics, over the last 250 years. Palynological evidence indicates that the vegetation around this lagoon basin was dominated by Fraxinus, Alnus, Carpinus, Quercus (deciduous oaks), and Corylus. The increase in the pollen percentage of Fraxinus, Alnus, and Ulmus, which are characteristic species of Longoz forests, particularly in the KRC-2 zone, indicates that the presence of these taxa in the area has increased from 1850 AD to the present. Additionally, the increased pollen percentage of anthropogenic indicator species such as Castanea, Olea, Chenopodiaceae, and Poaceae in the upper zone of the pollen diagram indicates that the Longoz vegetation in this region has undergone changes due to human impact since 1850 AD.

Özet

Bu çalışmada, KAJAK karot örnekleyici kullanılarak Türkiye'nin kuzeybatısında yer alan Bursa ilinin kuzeyindeki Karacabey'de bulunan Poyraz Lagününden 24 cm uzunluğunda bir sediman karotu alınmıştır. Karotun en dibinden alınan sediman örneğindeki toplam organik karbona göre AMS radyokarbon tarihlendirilmesi yapılmıştır. Kalibre edilmiş radyokarbon yaşı G.Ö. 238±24 yıl bulunmuştur. Karot boyunca 4 cm aralıklarla sediman örnekleri alınmış ve bu örneklerden standart yöntem kullanılarak polen preparatları hazırlanmıştır. Her örnek seviyesinde toplam 250 adet karasal polen sayılmıştır. Bu çalışmanın amacı: farklı habitat mozaiklerine sahip olan Karacabey Longoz (Subasar) Ormanı ve çevresinin son 250 yıllık vejetasyon tarihini belirlemektir. Palinolojik veriler bu lagünün etrafındaki vejetasyonun baskın türlerini Fraxinus, Alnus, Carpinus, yaprak döken meşeler ve Corylus'un oluşturduğunu göstermektedir. Longoz ormanlarının karakteristik türlerinden Fraxinus, Alnus ve Ulmus’un polen yüzdesinin özellikle KRC-2 zonunda artması, 1850 yılından günümüze bu taksonların alandaki varlığının arttığını ifade etmektedir. Ayrıca, polen diyagramının bu üst zonunda antropojenik gösterge türlerinden Castanea, Olea, Chenopodiaceae ve Poaceae polen yüzdesinin de artan varlığı, bu bölgedeki longoz vejetasyonunun 1850 yılından günümüze kadar insan etkisiyle değiştiğini de belirtmektedir.

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Cite This Article

Kılıç, N. K., Dağdeviren, R. Y., Aykır, D., Fural, Ş., Kükrer, S., Doğan, T., Mutlu, Y. E., Yakupoğlu, N. (2024). Vegetation History of Karacabey Longoz Forest and Surrounding Area During the Last 250 Years (Bursa, Türkiye). Coğrafya Dergisi, Sayı: 49, 31–41. https://doi.org/10.26650/JGEOG2024-1428426

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