Multiple lines of evidence suggest the persistence of the Ivory‐billed Woodpecker (Campephilus principalis) in Louisiana
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DOI: 10.1002/ece3.10017
Abstract: Abstract The history of the decline of the Ivory‐billed Woodpecker is long and complex, but the status of the species since 1944, when the last widely accepted sighting in continental North America occurred, is particularly… read more here.
Keywords: ivory; evidence; ivory billed; billed woodpecker ... See more keywords
Global ivory market prices since the 1989 CITES ban
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DOI: 10.1016/j.biocon.2019.07.020
Abstract: Poaching associated with the ivory trade is estimated to cause an 8% annual loss in the world elephant population. Although international trade in ivory was banned by the Convention on the International Trade in Endangered… read more here.
Keywords: cites ban; ivory market; region; ivory ... See more keywords
Elephant poaching and the ivory trade: The impact of demand reduction and enforcement efforts by China from 2005 – 2017
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DOI: 10.1016/j.gecco.2018.e00486
Abstract: African elephants are iconic species threatened by poaching and China was considered as one of the main destinations for illegally sourced ivory. In this article we combine two surveys of ivory carving enterprises with other… read more here.
Keywords: china; ivory; ivory trade; demand reduction ... See more keywords
14-Carbon demonstrates that some illegal ivory is being taken from government stockpiles
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DOI: 10.1073/pnas.2211550119
Abstract: The 14-carbon in animal tissues records the time that the tissues are formed; since the 1960s, using the “bomb curve” for 14C, the age of animal death can be determined accurately. Using animal tissue samples… read more here.
Keywords: government; demonstrates illegal; ivory; carbon demonstrates ... See more keywords
Time on a Tablet: Early Ivory Sundials Incorporating Wax Writing Tablets
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DOI: 10.1163/15733823-00243p01
Abstract: This article offers the first comprehensive study of a newly discovered type of medieval sundial made of ivory which might well be the precursor of the well-known diptych dial form made from ivory and wood.… read more here.
Keywords: early ivory; wax writing; time tablet; tablet early ... See more keywords
Relation between the Macroscopic Pattern of Elephant Ivory and Its Three-Dimensional Micro-Tubular Network
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DOI: 10.1371/journal.pone.0166671
Abstract: Macroscopic, periodic, dark and bright patterns are observed on sections of elephant tusk, in the dentin part (ivory). The motifs—also called Schreger pattern—vary depending on the orientation in the tusk: on sections perpendicular to the… read more here.
Keywords: pattern; macroscopic pattern; ivory; pattern elephant ... See more keywords