79 research outputs found
General view of the Lebombo baobab, showing also the high entrance to the cavity.
No full text<p>The photograph is taken from the Eco Trail 4x4 of the Kruger National Park. One can observe the fence which marks the border between South Africa and Mozambique. (The photograph was taken by Roxana Patrut).</p
Age, growth and death of a national icon: the historic Chapman baobab of Botswana
Get PDF© 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.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.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
Radiocarbon dating of Makuri Le boom, a very old African baobab from Nyae Nyae, Namibia
Get PDF© 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.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.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
The canopy shape (without any branches toward the south-west) and the very irregular profile of stem IV (in front) suggest that another stem must have collapsed in its vicinity.
No full text<p>(The photograph was taken by Adrian Patrut).</p
Collecting the oldest sample (Nr. 2) from the false cavity of the Lebombo baobab.
No full text<p>(The photograph was taken by Adrian Patrut).</p
The image shows the relict stem in front of stem III.
No full text<p>The pronounced convex shape of stem III indicates that it had to conform to the shape of the older relict stem. (The photograph was taken by Adrian Patrut).</p
Radiocarbon investigation of the big baobab of Outapi, Namibia
Get PDFAuthor 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.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.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
Radiocarbon dating of a very old African baobab from Savé Valley, Zimbabwe
Get PDFAuthor Posting. © Studia Chemia, 2016. This article is posted here by permission of Studia Chemia for personal use, not for redistribution. The definitive version was published in Studia Chemia 2016, no. 4 (2016): 7-20.The article reports the radiocarbon investigation results of the Humani Bedford baobab, an old African baobab from Savé Valley, Zimbabwe. Two wood samples were collected from the large inner cavity. Several segments were extracted from these samples and analysed by AMS (accelerator mass spectrometry) radiocarbon dating. We found that the age values of segments increase with the distance into the wood. This major anomaly is characteristic to multi-stemmed baobabs with a closed ring-shaped structure and a false cavity inside. The investigation of the Humani Bedford baobab evinced that the baobab consists of three fused stems. The fourth stem of the ring is missing. The oldest dated segment was found to have a radiocarbon date of 1655 ± 14 BP, which corresponds to a calibrated age of 1575 ± 30 yr. The dating results show that the stems which build the ring stopped growing toward the false cavity more than 600 yr ago. By considering the position of the oldest segment in the investigated stem, we concluded that the Humani Bedford baobab is around 1800 yr old. According to our dating results, the Humani Bedford baobab becomes the oldest living African baobab.The research
was funded by the Romanian Ministry of National Education CNCS-UEFISCDI
under grant PN-II-ID-PCE-2013-76
Radiocarbon investigation of the Superlative African Baobabs from Savé Valley Conservancy, Zimbabwe
Get PDFAuthor Posting. © Studia Chemia, 2019. 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 , 64(2), Tom II, (2019): 411-419, doi:10.24193/subbchem.2019.2.35.The article reports the radiocarbon investigation results of the superlative African baobabs from Savé Valley, Zimbabwe. Several wood samples collected from these baobab were analysed by AMS (accelerator mass spectrometry) radiocarbon dating. The radiocarbon dates of the oldest samples were 1529 ± 14 BP for Matendere Big baobab, 1179 ± 19 BP for Chishakwe Big tree and 1096 ± 35 BP for Mokore Giant baobab. The corresponding calibrated ages are 1430 ± 15, 1090 ± 40 and 1020 ± 25 calendar yr. The oldest tree from Savé Valley, which we described previously, is the Humani Bedford Old baobab. The radiocarbon date of its oldest sample, 1655 ± 14 BP, corresponds to a calibrated age of 1580 ± 30 calendar yr.Authors would like to acknowledge Léon and Judy Duplessis, the owners of the Matendere Rach, Lisa-Jane Campbell of Chishakwe Ranch, Roger Whittall, the owner of the Humani Ranch and his wife Anne Whittall, Greg and Melanie Duckworth of Mokore Ranch for granting access in the ranches and for authorising the investigation and sampling of the monumental baobabs. 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
African baobabs with double closed ring-shaped structures and two separate false cavities : radiocarbon investigation of the baobab of Golconda Fort
Get PDFAuthor Posting. © Studia Chemia, 2016. This article is posted here by permission of Studia Chemia for personal use, not for redistribution. The definitive version was published in Studia Chemia 2016, no. 4 (2016): 21-30.The article discloses the results of radiocarbon investigation
of the baobab of Golconda Fort, Hyderābād, India, which is the largest
African baobab outside Africa. Two wood samples were collected from
the large inner cavity; of these we extracted several segments for AMS
(accelerator mass spectrometry) radiocarbon dating. The oldest sample
segment had a radiocarbon date of 342 ± 22 BP, which corresponds to a
calibrated age of 430 ± 20 yr. We estimate that the oldest part of the
baobab has an age of 475 ± 50 yr. The investigation of the baobab of
Golconda Fort revealed that it consists of 6 + 2 fused stems. Six stems
build two rings that close two distinct false cavities, while two additional
stems are located outside the rings. We called this new type of architecture
double closed ring-shaped structure with two separate false cavities.The research was funded by the Romanian Ministry of National Education
CNCS-UEFISCDI under grant PN-II-ID-PCE-2013-76
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