Research Article


DOI :10.26650/JGEOG2023-1257031   IUP :10.26650/JGEOG2023-1257031    Full Text (PDF)

Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye

Candan Kuş ŞahinEbru Hatice Tığlı KaytanlıoğluHüseyin FakirUğur Özkan

The fall coloration of temperate tree leaves is a phenomenon of nature that ranges in color from pale yellows, oranges, and purples to dark reds. Although some evolutionary forces and weathered mechanisms (e.g., light and frost protection) cause variations in leaf color within and among species, no full explanation is found regarding fall coloration. This study phonologically monitored Torminalis glaberrima leaves from May until at the end of November in terms of fall coloration and senescence properties. The study presents the average color coordinate values of Torminalis glaberrima leaves, starting from May and continuing through November. Torminalis glaberrima leaves show an intense green color from May to June. We have used CIE L*a*b (1976) color space to determine discoloration intensity. As the seasons change, however, the leaves become darker into November (L = 25.67), with leaf discolorations becoming clearly distinguishable. We selected color values of leaves of Torminalis glaberrima at May as control, and as vegetation continues, compared to color changes throughout study (end of November). Accordingly, we measured total color differences (ΔE). The highest change in coloration was found in November (ΔE = 56.86) followed by October (ΔE = 44.71), September (ΔE = 42.32), August (ΔE = 15.37), July (ΔE = 5.86), and June (ΔE = 2.14). Notably, the highest color difference ΔE = 44.56 was found from August to September, and the lowest from May to June (ΔE = 2.14). Except for the leaves’ GE brightness values, which show very low correlations over time, all other color coordinate values for CIE L*a*b* and hue values show some color level correlations over time.

DOI :10.26650/JGEOG2023-1257031   IUP :10.26650/JGEOG2023-1257031    Full Text (PDF)

Isparta-Türkiye’de Yetişen Torminalis glaberrima’nın Sonbahar Yaprak Renklenmesinin İncelenmesi

Candan Kuş ŞahinEbru Hatice Tığlı KaytanlıoğluHüseyin FakirUğur Özkan

Ilıman iklim bölgelerinde yetişen ağaçların yaprakları, sonbaharda bir olgu olarak parlak sari renkten turuncu, pembe ve koyu kırmızı renge kadar karmaşık renklenme göstermektedir. Hernekadar bazı evrimsel güçler ve dış atmosferik şartlar (ışık ve don koruması) yapraklarda renk değişimine sebep olmakla birlikte, bu durum türler arasında farklılık göstermekte ve hala tam olarak açıklanabilmiş değildir. Bu çalışamda, torminalis glaberrima yapraklarının sonbahar renklenmesi ve yaşlanma durumu, fenolojik olarak Mayıs ayından Kasım sonuna kadar izlenmiştir. Torminalis glaberrima yapraklarının renk değerleri, Mayıs ayından başlayarak Kasım ayı sonuna kadar karşılaştırmalı olarak sunulmuştur. Torminalis glaberrima’nın yaprakları Mayıstan Haziran sonuna kadar koyu Yeşil renk tonunda gözlemlenmiş ve zaman ilerledikçe Kasımda daha koyu renge dönmüştür (L: 25.67 nümerik). Zamana bağlı olarak oluşan yapraklardaki renk değişimi kolaylıkla gözşlemlenebilmiştir. En yüksek renk değişimi, Kasımda (ΔE: 56.86), devamında Ekimde (ΔE: 44.71), Eylülde (ΔE: 42.32), Ağustosta (ΔE: 15.37), Temmuzda (ΔE: 5.86) ve Haziranda (ΔE: 2.14) ölçülmüştür. Fakat en yüksek renk farklılığı ise ΔE: 44.56 numerik olarak, Ağustostan Eylüle kadar olan periyotta en düşük ise Maytıstan Hazirana kadar (ΔE: 2.14) olan periyotta oluşmuştur. GE parlaklık değeri zamana bağlı olarak çok düşük korelasyon göstermekte ve istisna oluşturmakta, fakat diğer tüm renk koordinasyon değerleri olan CIE L*a*b*C* ve h nin, zamana bağlı olarak bir şekilde korelasyon gösterdiği anlaşılmıştır.


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APA

Kuş Şahin, C., Tığlı Kaytanlıoğlu, E.H., Fakir, H., & Özkan, U. (2023). Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye. Journal of Geography, 0(47), 101-108. https://doi.org/10.26650/JGEOG2023-1257031


AMA

Kuş Şahin C, Tığlı Kaytanlıoğlu E H, Fakir H, Özkan U. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye. Journal of Geography. 2023;0(47):101-108. https://doi.org/10.26650/JGEOG2023-1257031


ABNT

Kuş Şahin, C.; Tığlı Kaytanlıoğlu, E.H.; Fakir, H.; Özkan, U. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye. Journal of Geography, [Publisher Location], v. 0, n. 47, p. 101-108, 2023.


Chicago: Author-Date Style

Kuş Şahin, Candan, and Ebru Hatice Tığlı Kaytanlıoğlu and Hüseyin Fakir and Uğur Özkan. 2023. “Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye.” Journal of Geography 0, no. 47: 101-108. https://doi.org/10.26650/JGEOG2023-1257031


Chicago: Humanities Style

Kuş Şahin, Candan, and Ebru Hatice Tığlı Kaytanlıoğlu and Hüseyin Fakir and Uğur Özkan. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye.” Journal of Geography 0, no. 47 (May. 2024): 101-108. https://doi.org/10.26650/JGEOG2023-1257031


Harvard: Australian Style

Kuş Şahin, C & Tığlı Kaytanlıoğlu, EH & Fakir, H & Özkan, U 2023, 'Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye', Journal of Geography, vol. 0, no. 47, pp. 101-108, viewed 6 May. 2024, https://doi.org/10.26650/JGEOG2023-1257031


Harvard: Author-Date Style

Kuş Şahin, C. and Tığlı Kaytanlıoğlu, E.H. and Fakir, H. and Özkan, U. (2023) ‘Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye’, Journal of Geography, 0(47), pp. 101-108. https://doi.org/10.26650/JGEOG2023-1257031 (6 May. 2024).


MLA

Kuş Şahin, Candan, and Ebru Hatice Tığlı Kaytanlıoğlu and Hüseyin Fakir and Uğur Özkan. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye.” Journal of Geography, vol. 0, no. 47, 2023, pp. 101-108. [Database Container], https://doi.org/10.26650/JGEOG2023-1257031


Vancouver

Kuş Şahin C, Tığlı Kaytanlıoğlu EH, Fakir H, Özkan U. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye. Journal of Geography [Internet]. 6 May. 2024 [cited 6 May. 2024];0(47):101-108. Available from: https://doi.org/10.26650/JGEOG2023-1257031 doi: 10.26650/JGEOG2023-1257031


ISNAD

Kuş Şahin, Candan - Tığlı Kaytanlıoğlu, EbruHatice - Fakir, Hüseyin - Özkan, Uğur. Evolution of Autumn Leaf Coloration of Torminalis glaberrima Grown in Isparta, Türkiye”. Journal of Geography 0/47 (May. 2024): 101-108. https://doi.org/10.26650/JGEOG2023-1257031



TIMELINE


Submitted27.02.2023
Accepted25.09.2023
Published Online05.01.2024

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