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  • 1
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    Radiocarbon investigation of the big baobab of Outapi, Namibia (2021)
    Studia Chemia
    Details
    Publication Date: 2022-10-26
    Description: Author Posting. © Studia Chemia, 2021. This article is posted here by permission of Studia Chemia for personal use, not for redistribution. The definitive version was published in Studia Universitatis Babes: Bolyai Chemia, 66(1), 153-163, http://dx.doi.org/10.24193/subbchem.2021.01.12.
    Description: The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of the Big baobab of Outapi, which is the largest African baobab of Outapi, Namibia. The investigation of this monumental baobab revealed that it consists of 8 fused stems, out of which 4 are false stems. The Big baobab exhibits a closed ring-shaped structure. Three stems build the ring, which is now incomplete due to previous damage to the false cavity. Three wood samples were collected from the false cavity and from the longest false stem. Seven segments were extracted from the samples and dated by radiocarbon. The oldest investigated sample segment had a radiocarbon date of 820 ± 17 BP, corresponding to a calibrated age of 780 ± 10 calendar years. According to dating results, the Big baobab of Outapi is 850 ± 50 years old.
    Description: The investigation and sampling of the baobab was authorized by the Ministry of Environment and Tourism of Namibia under the Research/Collecting Permit No. 1934_2014. The research was funded by the Romanian Ministry of Education and Research CNCS-UEFISCDI under grant PN-III-P4-ID-PCE-2020-2567, No. 145/2021.
    Keywords: AMS radiocarbon dating ; Adansonia digitata ; Dendrochronology ; Age determination ; False cavity ; Multiple stems
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 2
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    Radiocarbon dating of Makuri Le boom, a very old African baobab from Nyae Nyae, Namibia (2020)
    Department of Chemistry
    Details
    Publication Date: 2022-10-26
    Description: © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Patrut, R. T., Patrut, A., Rakosy, D., Rakosy, L., Lowy, D. A., Von Redenf, K. F., & Bodis, J. Radiocarbon dating of Makuri Le boom, a very old African baobab from Nyae Nyae, Namibia. Studia Universitatis Babes-Bolyai Chemia, 65(2), (2020): 149-159, doi:10.24193/subbchem.2020.2.12.
    Description: The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of Makuri Lê boom, a very large African baobab from Nyae Nyae Conservancy, Namibia. The investigation of this superlative baobab shows that it consists of 12 independent stems of different dimensions, which belong to three generations. Makuri Lê boom has an open ring-shaped structure, a type of architecture which allows baobabs to reach very large sizes and old ages. The oldest sample has a radiocarbon date of 1602 ± 17 BP, which corresponds to a calibrated age of 1520 ± 35 calendar yr. By this value, Makuri Lê boom becomes one of the oldest dated baobabs and angiosperms with accurate dating results.
    Description: The research was funded by the Romanian Ministry of National Education CNCS-UEFISCDI under grant PN-III-P4-ID-PCE-2016-0776, Nr. 90/2017.
    Keywords: AMS radiocarbon dating ; Adansonia digitata ; Tropical trees ; Dendrochronology ; Age determination ; Multiple stems
    Repository Name: Woods Hole Open Access Server
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  • 3
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    Radiocarbon investigation of a superlative Grandidier Baobab, the Big Reniala of Isosa (2020)
    Universitatis Babes-Bolyai, Department of Chemistry
    Details
    Publication Date: 2022-10-26
    Description: © The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Patrut,Roxana T.; Patrut,Adrian; Pock-Tsy,Jean-Michel Leong; Woodborne,Stephan; Rakosy,Laszlo; Danthu,Pascal; Ratiu,Ileana-Andreea; Bodis,Jeno; Von Reden,Karl. Radiocarbon investigation of a superlative Grandidier Baobab, the Big Reniala of Isosa. Studia Universitatis Babes-Bolyai Chemia, 64(4), (2019): 131-139, doi:10.24193/subbchem.2019.4.10.
    Description: The article discloses the accelerator mass spectrometry (AMS) radiocarbon dating results of the Big Reniala of Isosa, which is a massive Grandidier baobab (Adansonia grandidieri Baill.) of Madagascar. The investigation of this baobab shows that it consists of 5 perfectly fused stems and exhibits a cluster structure. The calculated wood volume of the tree is 540 m3, which makes the Big Reniala of Isosa the largest individual of all Adansonia species and also the biggest known angiosperm in terms of volume. Several samples were collected from the outer part of the stems. The oldest dated sample had a radiocarbon date of 934 ± 24 BP, which corresponds to a calibrated age of 845 ± 25 years. This value indicates an age of 1000 ± 100 years for the big Reniala of Isosa.
    Description: The investigation and sampling of the baobab was authorised by the Forestry Direction of the Ministry of Environment, Ecology and Forestry of Madagascar and by the Madagascar National Parks. The research was funded by the Romanian Ministry of National Education CNCS-UEFISCDI under grant PN-III-P4-ID-PCE-2016-0776, No. 90/2017.
    Keywords: AMS radiocarbon dating ; Adansonia grandidieri ; Tropical trees ; Multiple stems
    Repository Name: Woods Hole Open Access Server
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  • 4
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    Radiocarbon dating of the historic Livingstone Tree at Chiramba, Mozambique (2020)
    Studia Universitatis Babes-Bolyai
    Details
    Publication Date: 2022-10-26
    Description: Author Posting. © Studia Chemia, 2020. Studia Universitatis Babes-Bolyai Seria Chemia is an Open Access Journal (read, download, copy, distribute, print for research use, search, or link to the full texts of articles). The definitive version was published in Studia Universitatis Babes-Bolyai, Seria Chemia 65, no. 3 (2020): 149-156, doi:10.24193/subbchem.2020.3.11.
    Description: The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of the Livingstone Tree, a large African baobab on the right bank of the Zambezi, near Chiramba, Mozambique. In 1858, David Livingstone, who discovered the baobab, carved his monogram on the walls of its inner cavity. In 1996, the historic baobab was uprooted when a cyclone struck the area. Several wood fragments were extracted from the remains of the toppled tree. Five samples which originate from these fragments were subsequently dated by radiocarbon. The oldest sample had a radiocarbon date of 1598 ± 17 BP, that corresponded in 1996 to a calibrated age of 1490 ± 35 calendar years. According to this value, the Livingstone Tree at Chiramba becomes one of the oldest known African baobabs, with an age of over 1500 years. The Livingstone Tree had a closed ring-shaped structure, that consisted of 4 fused stems around a false cavity and also 2 additional stems outside the ring.
    Description: The research was funded by the Romanian Ministry of National Education CNCS-UEFISCDI under grants PN-II-ID-PCE-2013-76 and PN-III-P4-ID-PCE-2016-0776, Nr. 90/2017.
    Keywords: AMS radiocarbon dating ; Adansonia digitata ; Tropical trees ; Age determination ; Closed ring-shaped structure ; False cavity
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 5
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    Age, growth and death of a national icon: the historic Chapman baobab of Botswana (2020)
    MDPI
    Details
    Publication Date: 2022-10-26
    Description: © The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Patrut, A., Woodborne, S., Patrut, R. T., Hall, G., Rakosy, L., Winterbach, C., & von Reden, K. F. Age, growth and death of a national icon: the historic Chapman baobab of Botswana. Forests, 10(11), (2019): 983, doi: 10.3390/f10110983.
    Description: The year 2016 witnessed the fall of a symbol of the botanical world: the historic Chapman baobab of Botswana. This article presents the results of our investigation of the standing and fallen tree. The Chapman baobab had an open ring-shaped structure composed of six partially fused stems. Several wood samples collected from the stems prior and after their collapse were analysed by using radiocarbon dating. The radiocarbon date of the oldest sample was 1381 ± 22 BP, which corresponds to a calibrated age of 1345 (+10, −15) calendar years. The dating results show that the six stems of the Chapman baobab belonged to three different generations, which were 1350–1400, 800–1000 and 500–600 years old. The growth rate variation of the largest and oldest stem is presented and correlated with the climate evolution in the area over the past 1000 years. The factors that determined the sudden fall and death of the Chapman baobab are also presented and discussed.
    Description: The research was funded by the Romanian Ministry of National Education CNCS-UEFISCDI under grant PN-III-P4-ID-PCE-2016-0776, No. 90/2017.
    Keywords: Adansonia digitata L. ; Tropical trees ; Age determination ; AMS radiocarbon dating ; Growth rate ; Multiple stems
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 6
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    Radiocarbon investigation of two old elms from Romania (2022)
    Studia Chemia
    Details
    Publication Date: 2022-07-22
    Description: Author Posting. © Studia Chemia, 2022. This article is posted here by permission of Studia Chemia for personal use, not for redistribution. The definitive version was published in Studia Universitatis Babes: Bolyai Chemia, 67(1), 245–256, https://doi.org/10.24193/subbchem.2022.1.16.
    Description: The paper reports the AMS (accelerator mass spectrometry) radiocarbon investigation results of two superlative elms from Romana, the very large field elm of Calafat, with a wood volume of 85 m 3 , and the wych elm of Sadova. Two wood samples were extracted from each elm and were analysed by AMS radiocarbon. The oldest dated sample from the elm of Calafat had a radiocarbon date of 350 ± 19 BP, which corresponds to a calibrated age of 415 ± 25 years, while the oldest sample from the elm of Sadova had a radiocarbon date of 188 ± 24 BP, corresponding to a calibrated age of 260 ± 25 years. These values indicate high ages for the two elms, namely 430 ± 25 years or the elm of Calafat and 400 ± 25 years for the elm of Sadova.
    Description: The research was funded by the Romanian Ministry of Education CNCS-UEFISCDI under grant PN-III-P4-ID-PCE-2020-2567, No. 145/2021.
    Keywords: AMS radiocarbon dating ; Ulmus minor ; Ulmus glabra ; dendrochronology ; age determination ; Romania
    Repository Name: Woods Hole Open Access Server
    Type: Article
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