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Journals / Mühendislik Bilimleri ve Tasarım Dergisi / 2026 / Cilt: 14 Sayı: 3

TAXONOMY, MORPHOLOGY, AND PALEOECOLOGICAL ASSESSMENT OF GLOBIGERINELLA CALIDA (PARKER, 1962) FROM THE LATE MIDDLE PLEISTOCENE OF THE MANAVGAT SUB-BASIN (ANTALYA BASIN, SW TÜRKİYE)

MANAVGAT ALT HAVZASI (ANTALYA HAVZASI, GB TÜRKİYE) GEÇ ORTA PLEYİSTOSEN ÇÖKELLERİNDE GLOBIGERINELLA CALIDA (PARKER, 1962): TAKSONOMİ, MORFOLOJİ VE PALEOEKOLOJİK DEĞERLENDİRME

Süheyla Kanbur(SÜLEYMAN DEMİREL ÜNİVERSİTESİ)0000-0002-5208-4379
Pages
794–802
Publication Date
2026-09-25
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AI Summary & Key Takeaways

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

This study provides a new regional record of morphological variability in G. calida from the Eastern Mediterranean and establishes a basis for future ecophenotypic research.

📌 3 Key Takeaways

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Objective & Hypothesis:This study investigates the taxonomic and morphological characteristics of Globigerinella calida (Parker, 1962) individuals recovered from the MNV composite section, Manavgat Sub-basin (Antalya Basin).
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Key Findings & Data:Recorded in 14 out of 46 samples from the late middle Pleistocene, fan-delta front succession, the species displays all diagnostic adult features, including radial elongation of the ultimate chamber, five chambers in the final whorl, a distinctly lobulate periphery and a narrow-lipped aperture.
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Conclusion & Impact:This study provides a new regional record of morphological variability in G. calida from the Eastern Mediterranean and establishes a basis for future ecophenotypic research.
🔬Design:Araştırma Makalesi
📍Scope:46 samples
⚙️Variables:Globigerinella calida · Manavgat Alt Havzası · Geç Orta Pleyistosen

Abstract

This study investigates the taxonomic and morphological characteristics of Globigerinella calida (Parker, 1962) individuals recovered from the MNV composite section, Manavgat Sub-basin (Antalya Basin). Recorded in 14 out of 46 samples from the late middle Pleistocene, fan-delta front succession, the species displays all diagnostic adult features, including radial elongation of the ultimate chamber, five chambers in the final whorl, a distinctly lobulate periphery and a narrow-lipped aperture. However, across all studied levels, the aperture extends from the umbilicus toward the periphery without reaching the final umbilical-extraumbilical position described in the literature, and individuals are markedly smaller than literature reference specimens, with even the largest specimen measuring only 200 μm. The consistency of these features throughout the population suggests a multifactorial environmental stress regime, combining regional oligotrophy, dynamic fan-delta depositional conditions, and Middle Pleistocene glacial-interglacial climatic fluctuations, rather than an isolated taphonomic effect. This study provides a new regional record of morphological variability in G. calida from the Eastern Mediterranean and establishes a basis for future ecophenotypic research.

Özet

Bu çalışma, Manavgat Alt Havzası'ndaki (Antalya Havzası) MNV kompozit kesitinden elde edilen Globigerinella calida (Parker, 1962) bireylerinin taksonomik ve morfolojik özelliklerini incelemektedir. Geç Orta Pleyistosen yaşlı ve yelpaze-delta önü ortamında çökelmiş sedimentlerden, 46 örneğin 14'ünde tespit edilen tür, radyal uzamış son loca, son turda beş loca, belirgin loblu periferi, ve dar dudaklı apertür gibi diyagnostik erişkin özelliklerinin tamamını taşımaktadır. Ancak incelenen tüm seviyelerde, apertürün ombilikten çevreye doğru uzamakla birlikte literatürde tanımlanan nihai ombilikal-ekstraombilikal konuma ulaşmadığı ve bireylerin literatür referanslarına kıyasla belirgin şekilde küçük boyutlu olduğu (en büyük birey dahi 200 µm) gözlenmiştir. Bu özelliklerin popülasyon genelinde tutarlı olması, izole bir tafonomik etkiden çok, bölgesel oligotrofi, dinamik yelpaze-delta ortam koşulları (ilerleyen-gerileyen-ilerleyen) ve Orta Pleyistosen buzul-buzularası döngülerin getirdiği sıcaklık ve tuzluluk dalgalanmaları ile birlikte oluşan çok faktörlü bir çevresel stres rejimine işaret etmektedir. Çalışma, G. calida'nın Doğu Akdeniz'deki morfolojik değişkenliğine dair yeni bir bölgesel kayıt sunmakta ve gelecekteki ekofenotipik araştırmalar için bir temel oluşturmaktadır.

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Cite This Article

Kanbur, S. (2026). TAXONOMY, MORPHOLOGY, AND PALEOECOLOGICAL ASSESSMENT OF GLOBIGERINELLA CALIDA (PARKER, 1962) FROM THE LATE MIDDLE PLEISTOCENE OF THE MANAVGAT SUB-BASIN (ANTALYA BASIN, SW TÜRKİYE). Mühendislik Bilimleri ve Tasarım Dergisi, Cilt: 14 Sayı: 3, 794–802. https://doi.org/10.21923/jesd.1997747

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