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239
Marcus Eriksen, Laurent C. M. Lebreton, Henry S. Carson et al., “Plastic Pollution in the World’s Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea,” PLOS ONE 9, no. 12 (December 10, 2014): e111913, https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0111913&type=printable. As indicated in the title, the authors’ final estimate of the total number of plastic pieces in the ocean came in at 5 trillion particles – both macroplastic and microplastic – weighing 269,000 tons.
240
Marcus Eriksen, Laurent C. M. Lebreton, Henry S. Carson et al., “Plastic Pollution in the World’s Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea,” PLOS ONE 9, no. 12 (December 10, 2014): e111913, https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0111913&type=printable. As indicated in the title, the authors’ final estimate of the total number of plastic pieces in the ocean came in at 5 trillion particles – both macroplastic and microplastic – weighing 269,000 tons.
241
Marcus Eriksen, Laurent C. M. Lebreton, Henry S. Carson et al., “Plastic Pollution in the World’s Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea,” PLOS ONE 9, no. 12 (December 10, 2014): e111913, https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0111913&type=printable. As indicated in the title, the authors’ final estimate of the total number of plastic pieces in the ocean came in at 5 trillion particles – both macroplastic and microplastic – weighing 269,000 tons.
242
Marcus Eriksen, Laurent C. M. Lebreton, Henry S. Carson et al., “Plastic Pollution in the World’s Oceans: More than 5 Trillion Plastic Pieces Weighing over 250,000 Tons Afloat at Sea,” PLOS ONE 9, no. 12 (December 10, 2014): e111913, https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0111913&type=printable. As indicated in the title, the authors’ final estimate of the total number of plastic pieces in the ocean came in at 5 trillion particles – both macroplastic and microplastic – weighing 269,000 tons.
243
Collin P. Ward, Cassia J. Armstrong, Anna N. Walsh, Julia H. Wash, and Christopher M. Reddy, “Sunlight Converts Polystyrene to Carbon Dioxde and Dissolved Organic Carbon,” Environmental Science Technology Letters 6, no. 11 (October 10, 2019): 669–674, https://doi.org/10.1021/acs.estlett.9b00532.
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245
Collin P. Ward, “Sunlight Converts Polystyrene to Carbon Dioxide and Dissolved Organic Carbon.”
246
Collin P. Ward, “Sunlight Converts Polystyrene to Carbon Dioxide and Dissolved Organic Carbon.”
247
Emily A. Miller, Loren McClenachan, Roshikazu Uni et al., “The Historical Development of Complex Global Trafficking Networks for Marine Wildlife,” Science Advances 5, no. 3 (March 2019): eaav5948, http://dx.doi.org/10.1126/sciadv.aav5948.
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Martha Chaiklin, “Imports and Autarky: Tortoiseshell in Early Modern Japan,” in Luxury and Global Perspective: Objects and Practices, 1600–2000, edited by Bernd-Stefan Grewe and Karen Hoffmeester (Cambridge, UK: Cambridge University Press, 2016), 218–21, 230, 236.
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Stephanie E. Hornbeck, “Elephant Ivory: An Overview of Changes to Its Stringent Regulation and Considerations for Its Identification,” AIC Objects Specialty Group Postprints 22 (2015): 101–22, http://resources.conservation-us.org/osg-postprints/wp-content/uploads/sites/8/2015/05/osg022-08vII.pdf.
251
Stephanie E. Hornbeck, “Elephant Ivory: An Overview of Changes to Its Stringent Regulation and Considerations for Its Identification,” AIC Objects Specialty Group Postprints 22 (2015): 101–22, http://resources.conservation-us.org/osg-postprints/wp-content/uploads/sites/8/2015/05/osg022-08vII.pdf.
252
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253
“Ivory: Where It Comes From, Its Uses and the Modes of Working It,” New York Times, August 14, 1866, https://timesmachine.nytimes.com.
254
“Ivory: Where It Comes From, Its Uses and the Modes of Working It,” New York Times, August 14, 1866, https://timesmachine.nytimes.com.
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“The World’s Ivory Trade,” New York Times, July 23, 1882, https://timesmachine.nytimes.com.
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“The World’s Ivory Trade,” New York Times, July 23, 1882, https://timesmachine.nytimes.com.
258
Chaiklin, “Imports and Autarky: Tortoiseshell in Early Modern Japan.”
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Christine Figgener (sea turtle biologist) in discussion with the author, November 6, 2019.
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According to the IUCN, “Disease appears to be a problem in some populations in some years, with diphtheritic stomatitis (caused by the bacteria Corynebacterium spp.) and the blood parasite Leucocytozoon tawaki, formerly only known from Fiordland penguins, causes of mortality for chicks… Human disturbance, particularly from unregulated tourists at breeding areas,