دورية أكاديمية
Radiocarbon dating of seized ivory confirms rapid decline in African elephant populations and provides insight into illegal trade.
| العنوان: | Radiocarbon dating of seized ivory confirms rapid decline in African elephant populations and provides insight into illegal trade. |
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| المؤلفون: | Cerling TE; IsoForensics, Inc., Salt Lake City, UT 84108; thure.cerling@utah.edu.; Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112.; Department of Biology, University of Utah, Salt Lake City, UT 84112., Barnette JE; IsoForensics, Inc., Salt Lake City, UT 84108., Chesson LA; IsoForensics, Inc., Salt Lake City, UT 84108., Douglas-Hamilton I; Save the Elephants, Nairobi 00200, Kenya.; Department of Zoology, University of Oxford, Oxford OX1 3PS, United Kingdom., Gobush KS; Wildlife Program, Vulcan, Inc., Seattle, WA 98104., Uno KT; Lamont-Doherty Earth Observatory, Division of Biology and Paleo Environment, Columbia University, Palisades, NY 10964., Wasser SK; Center for Conservation Biology, Department of Biology, University of Washington, Seattle, WA 98195., Xu X; Department of Earth System Science, University of California, Irvine, CA 92697. |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2016 Nov 22; Vol. 113 (47), pp. 13330-13335. Date of Electronic Publication: 2016 Nov 07. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
| مواضيع طبية MeSH: | Elephants*, Carbon Radioisotopes/*metabolism , Radiometric Dating/*methods, Animals ; Cameroon ; Commerce ; Congo ; Conservation of Natural Resources ; Crime ; Gabon ; Population Dynamics/trends |
| مستخلص: | Carbon-14 measurements on 231 elephant ivory specimens from 14 large ivory seizures (≥0.5 ton) made between 2002 and 2014 show that most ivory (ca 90%) was derived from animals that had died less than 3 y before ivory was confiscated. This indicates that the assumption of recent elephant death for mortality estimates of African elephants is correct: Very little "old" ivory is included in large ivory shipments from Africa. We found only one specimen of the 231 analyzed to have a lag time longer than 6 y. Patterns of trade differ by regions: East African ivory, based on genetic assignments of geographic origin, has a much higher fraction of "rapid" transit than ivory originating in the Tridom region of Cameroon-Gabon-Congo. Carbon-14 is an important tool in understanding patterns of movement of illegal wildlife products. Competing Interests: I.D.-H. is chief executive officer of Save the Elephants, which provided partial funding for this research, and K.S.B. is employed by Vulcan, Inc., which provided partial funding for this research through the Paul G. Allen Family Foundation. |
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| فهرسة مساهمة: | Keywords: Africa; forensics; genetics; isotopes; wildlife |
| المشرفين على المادة: | 0 (Carbon Radioisotopes) |
| تواريخ الأحداث: | Date Created: 20161109 Date Completed: 20180329 Latest Revision: 20240523 |
| رمز التحديث: | 20240523 |
| مُعرف محوري في PubMed: | PMC5127328 |
| DOI: | 10.1073/pnas.1614938113 |
| PMID: | 27821744 |
| قاعدة البيانات: | MEDLINE |
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