<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>UTas ePrints - Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions</title> <script type="text/javascript" src="http://eprints.utas.edu.au/javascript/auto.js"><!-- padder --></script> <style type="text/css" media="screen">@import url(http://eprints.utas.edu.au/style/auto.css);</style> <style type="text/css" media="print">@import url(http://eprints.utas.edu.au/style/print.css);</style> <link rel="icon" href="/images/eprints/favicon.ico" type="image/x-icon" /> <link rel="shortcut icon" href="/images/eprints/favicon.ico" type="image/x-icon" /> <link rel="Top" href="http://eprints.utas.edu.au/" /> <link rel="Search" href="http://eprints.utas.edu.au/cgi/search" /> <meta content="Brook, Barry W." name="eprints.creators_name" /> <meta content="Bowman, David M.J.S." name="eprints.creators_name" /> <meta content="" name="eprints.creators_id" /> <meta content="David.Bowman@utas.edu.au" name="eprints.creators_id" /> <meta content="article" name="eprints.type" /> <meta content="2007-11-11 23:41:25" name="eprints.datestamp" /> <meta content="2008-01-08 15:30:00" name="eprints.lastmod" /> <meta content="show" name="eprints.metadata_visibility" /> <meta content="Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions" name="eprints.title" /> <meta content="pub" name="eprints.ispublished" /> <meta content="270000" name="eprints.subjects" /> <meta content="restricted" name="eprints.full_text_status" /> <meta content="Key Centre for Tropical Wildlife Management, Northern Territory University, Darwin 0909, Northern Territory, Australia" name="eprints.keywords" /> <meta content="Understanding of the Pleistocene megafaunal extinctions has been advanced recently by the application of simulation models and new developments in geochronological dating. Together these have been used to posit a rapid demise of megafauna due to over-hunting by invading humans. However, we demonstrate that the results of these extinction models are highly sensitive to implicit assumptions concerning the degree of prey naivety to human hunters. In addition, we show that in Greater Australia, where the extinctions occurred well before the end of the last Ice Age (unlike the North American situation), estimates of the duration of coexistence between humans and megafauna remain imprecise. Contrary to recent claims, the existing data do not prove the ‘‘blitzkrieg’’ model of overkill." name="eprints.abstract" /> <meta content="2002" name="eprints.date" /> <meta content="published" name="eprints.date_type" /> <meta content="PNAS - National Academy of Sciences. Proceedings" name="eprints.publication" /> <meta content="99" name="eprints.volume" /> <meta content="23" name="eprints.number" /> <meta content="14624-14627" name="eprints.pagerange" /> <meta content=" 10.1073/pnas.232126899" name="eprints.id_number" /> <meta content="TRUE" name="eprints.refereed" /> <meta content=" 0027-8424" name="eprints.issn" /> <meta content="http://dx.doi.org/10.1073/pnas.232126899" name="eprints.official_url" /> <meta content="1. Singh, S. (1998) Fermat’s Last Theorem: The Story of a Riddle That Confounded the World’s Greatest Minds for 358 Years (Fourth Estate, London). 2. Diamond, J. M. (2001) Nature 411, 755–757. 3. Martin, P. S. & Klein, R. G. (1984) Quaternary Extinctions: A Prehistoric Revolution (Univ. of Arizona Press, Tucson). 4. Grayson, D. K. (2002) Bull. Fla. Mus. Nat. Hist., in press. 5. Martin, P. S.&Steadman, D. W. (1999) in Extinctions in Near Time, ed. MacPhee, R. D. E. (Kluwer Academic, New York), pp. 17–52. 6. Bowman, D. (2001) J. Biogeogr. 28, 549–564. 7. Wroe, S., Field, J.&Fullagar, R. (2002) Nat. Aust. 27, 54–61. 8. Flannery, T. F. (2001) The Eternal Frontier: An Ecological History of North America and Its People (Atlantic Monthly, New York). 9. Flannery, T. F. (1994) The Future Eaters: An Ecological History of the Australasian Lands and People (Reed Books, Sydney). 10. Choquenot, D. & Bowman, D. M. J. S. (1998) Global Ecol. Biogeogr. Lett. 7, 167–180. 11. Miller, G. H., Magee, J. W., Johnson, B. J., Fogel, M. L., Spooner, N. A., McCulloch, M. T. & Ayliffe, L. K. (1999) Science 283, 205–208. 12. Flannery, T. F. (1999) Science 283, 182–183. 13. Martin, P. S. (1973) Science 179, 969–974. 14. Beck, M. W. (1996) Paleobiology 22, 91–103. 15. Martin, P. S. (1967) in Pleistocene Extinctions: The Search for a Cause, eds. Martin, P. S.&Wright,H. E. (Yale Univ. Press, New Haven, CT), pp. 75–120. 16. Alroy, J. (2001) Science 292, 1893–1896. 17. Holdaway, R. N. & Jacomb, C. (2000) Science 287, 2250– 2254. 18. Roberts, R. G., Flannery, T. F., Ayliffe, L. K., Yoshida, H., Olley, J. M., Prideaux,G. J., Laslett, G. M., Baynes, A., Smith, M. A., Jones, R. & Smith, B. L. (2001) Science 292, 1888– 1892. 19. O’Connell, J. F. & Allen, J. (1998) Evol. Anthropol. 6, 132–146. 20. Gillespie, R. (2002) Radiocarbon, in press. 21. Berger, J., Swenson, J. E. & Persson, I. (2001) Science 291, 1036–1039. 22. McLean, I. G., Lundie-Jenkins, G. & Jarman, P. J. (1996) Biol. Conserv. 75, 51–62. 23. Ridpath, M. G. & Waithman, J. (1988) Wildl. Soc. Bull. 16, 385–390. 24. Bayliss, P. & Yeomans, K. M. (1989) Aust. Wildl. Res. 16, 651–676. 25. Boulton, W. J.&Freeland, W. J. (1991) Wildl. Res. 18, 63–73. 26. Freeland, W. J. & Bolton, W. J. (1990) Aust. Wildl. Res. 17, 411–420. 27. Griffin, A. S., Blumstein, D. T. & Evans, C. (2000) Conserv. Biol. 14, 1317–1326. 28. Blumstein, D. T., Daniel, J. C., Griffin, A. S. & Evans, C. S. (2000) Behav. Ecol. 11, 528–535. 29. Hawkes, K.,O’Connell, J. F.&Rogers, L. (1997) Trends Ecol. Evol. 12, 29–32. 30. Turney, C. S.M., Kershaw, A. P., Moss, P., Bird,M. I., Fifield, L. K., Cresswell, R. G., Santos, G. M., Di Tada, M. L., Hausladen, P. A. & Zhou, Y. (2001) J. Quaternary Sci. 16, 767–771. 31. Webb, R. E. (1998) Radiocarbon 40, 749–758. 32. Field, J., Fullager, R., Roberts, R. G., Yoshida, H., Flannery, T. F., Ayliffe, L. K., Olley, J., Prideaux, G. J., Laslett, G., Baynes, A., et al. (2001) Science 294, 7. 33. Wroe, S. & Field, J. (2001) Australasian Sci. 22, 21–25. 34. Turney, C. S. M., Bird, M. I., Fifield, L. K., Roberts, R. G., Smith, M., Dortch, C. E.,Grun, R., Lawson, E., Ayliffe, L. K., Miller, G. H., Dortch, J.&Cresswell, R. G. (2001) Quaternary Res. 55, 3–13. 35. Manly, B. F. J. (1991) Randomization and Monte Carlo Methods in Biology (Chapman and Hall, London). 36. Bunn, H. T., Bartram, L. & Kroll, E. (1988) J. Anthropol. Archaeol. 7, 412–457. 37. O’Connell, J. F., Hawkes, K. & Blurton-Jones, N. G. (1992) J. Archaeol. Sci. 19, 319–345. 38. Efron, B. & Tibshirani, R. J. (1993) An Introduction to the Bootstrap (Chapman & Hall, New York). 39. Chappell, J., Head, J. & Magee, J. (1996) Antiquity 70, 543–552. 40. Roberts, R. G., Jones, R., Spooner, N. A., Head, M. J., Murray, A. S. & Smith,M. A. (1994) Quaternary Sci. Rev. 13, 575–583. 41. Thorne, A., Grun, R., Mortimer, G., Spooner, N. A., Simpson, J. J., McCulloch, M., Taylor, L. & Curnoe, D. (1999) J. Hum. Evol. 36, 591–612. 42. Allen, J. & Holdaway, S. (1995) Antiquity 69, 101–112. 43. Bowler, J. M. & Magee, J. W. (2000) J. Hum. Evol. 38, 719–726. 44. Jones, R. (1982) in Archaeometry: An Australasian Perspective, eds. Ambrose, W.&Duerden, P. (Dept. of Prehist., Res. Sch. Pac. Stud., Australian Natl. Univ., Occas. Pap. Prehist. 12, Canberra). 45. Roberts, R. G., Jones, R. & Smith,M. A. (1994) Antiquity 68, 611–616. 46. Jackson, J. B. C.,Kirby, M. X., Berger,W.H., Bjorndal,K.A., Botsford, L.W., Bourque, B. J., Bradbury, R. H., Cooke, R., Erlandson, J., Estes, J. A., et al. (2001) Science 293, 629–638. 47. Real, L. A. (1977) Am. Nat. 111, 289–300." name="eprints.referencetext" /> <meta content="Brook, Barry W. and Bowman, David M.J.S. (2002) Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions. PNAS - National Academy of Sciences. Proceedings, 99 (23). pp. 14624-14627. ISSN 0027-8424" name="eprints.citation" /> <meta content="http://eprints.utas.edu.au/2427/1/Brook_Bowman_-_Megafaunal_extinction.pdf" name="eprints.document_url" /> <link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" /> <meta content="Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions" name="DC.title" /> <meta content="Brook, Barry W." name="DC.creator" /> <meta content="Bowman, David M.J.S." name="DC.creator" /> <meta content="270000 Biological Sciences" name="DC.subject" /> <meta content="Understanding of the Pleistocene megafaunal extinctions has been advanced recently by the application of simulation models and new developments in geochronological dating. Together these have been used to posit a rapid demise of megafauna due to over-hunting by invading humans. However, we demonstrate that the results of these extinction models are highly sensitive to implicit assumptions concerning the degree of prey naivety to human hunters. In addition, we show that in Greater Australia, where the extinctions occurred well before the end of the last Ice Age (unlike the North American situation), estimates of the duration of coexistence between humans and megafauna remain imprecise. Contrary to recent claims, the existing data do not prove the ‘‘blitzkrieg’’ model of overkill." name="DC.description" /> <meta content="2002" name="DC.date" /> <meta content="Article" name="DC.type" /> <meta content="PeerReviewed" name="DC.type" /> <meta content="application/pdf" name="DC.format" /> <meta content="http://eprints.utas.edu.au/2427/1/Brook_Bowman_-_Megafaunal_extinction.pdf" name="DC.identifier" /> <meta content="http://dx.doi.org/10.1073/pnas.232126899" name="DC.relation" /> <meta content="Brook, Barry W. and Bowman, David M.J.S. (2002) Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions. PNAS - National Academy of Sciences. Proceedings, 99 (23). pp. 14624-14627. ISSN 0027-8424" name="DC.identifier" /> <meta content="http://eprints.utas.edu.au/2427/" name="DC.relation" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/BibTeX/epprod-eprint-2427.bib" title="BibTeX" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/ContextObject/epprod-eprint-2427.xml" title="OpenURL ContextObject" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/ContextObject::Dissertation/epprod-eprint-2427.xml" title="OpenURL Dissertation" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/ContextObject::Journal/epprod-eprint-2427.xml" title="OpenURL Journal" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/DC/epprod-eprint-2427.txt" title="Dublin Core" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/DIDL/epprod-eprint-2427.xml" title="DIDL" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/EndNote/epprod-eprint-2427.enw" title="EndNote" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/HTML/epprod-eprint-2427.html" title="HTML Citation" type="text/html; charset=utf-8" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/METS/epprod-eprint-2427.xml" title="METS" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/MODS/epprod-eprint-2427.xml" title="MODS" type="text/xml" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/RIS/epprod-eprint-2427.ris" title="Reference Manager" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/Refer/epprod-eprint-2427.refer" title="Refer" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/Simple/epprod-eprint-2427text" title="Simple Metadata" type="text/plain" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/Text/epprod-eprint-2427.txt" title="ASCII Citation" type="text/plain; charset=utf-8" /> <link rel="alternate" href="http://eprints.utas.edu.au/cgi/export/2427/XML/epprod-eprint-2427.xml" title="EP3 XML" type="text/xml" /> </head> <body bgcolor="#ffffff" text="#000000" onLoad="loadRoutine(); MM_preloadImages('images/eprints/ePrints_banner_r5_c5_f2.gif','images/eprints/ePrints_banner_r5_c7_f2.gif','images/eprints/ePrints_banner_r5_c8_f2.gif','images/eprints/ePrints_banner_r5_c9_f2.gif','images/eprints/ePrints_banner_r5_c10_f2.gif','images/eprints/ePrints_banner_r5_c11_f2.gif','images/eprints/ePrints_banner_r6_c4_f2.gif')"> <div class="ep_noprint"><noscript><style type="text/css">@import url(http://eprints.utas.edu.au/style/nojs.css);</style></noscript></div> <table width="795" border="0" cellspacing="0" cellpadding="0"> <tr> <td><script language="JavaScript1.2">mmLoadMenus();</script> <table border="0" cellpadding="0" cellspacing="0" width="795"> <!-- fwtable fwsrc="eprints_banner_final2.png" fwbase="ePrints_banner.gif" fwstyle="Dreamweaver" fwdocid = "1249563342" fwnested="0" --> <tr> <td><img src="/images/eprints/spacer.gif" width="32" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="104" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="44" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="105" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="41" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="16" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="68" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="82" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="69" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="98" height="1" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td> </tr> <tr> <td colspan="12"><img name="ePrints_banner_r1_c1" src="/images/eprints/ePrints_banner_r1_c1.gif" width="795" height="10" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="10" border="0" alt="" /></td> </tr> <tr> <td rowspan="6"><img name="ePrints_banner_r2_c1" src="/images/eprints/ePrints_banner_r2_c1.gif" width="32" height="118" border="0" alt="" /></td> <td rowspan="5"><a href="http://www.utas.edu.au/"><img name="ePrints_banner_r2_c2" src="/images/eprints/ePrints_banner_r2_c2.gif" width="104" height="103" border="0" alt="" /></a></td> <td colspan="10"><img name="ePrints_banner_r2_c3" src="/images/eprints/ePrints_banner_r2_c3.gif" width="659" height="41" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="41" border="0" alt="" /></td> </tr> <tr> <td colspan="3"><a href="http://eprints.utas.edu.au/"><img name="ePrints_banner_r3_c3" src="/images/eprints/ePrints_banner_r3_c3.gif" width="190" height="31" border="0" alt="" /></a></td> <td rowspan="2" colspan="7"><img name="ePrints_banner_r3_c6" src="/images/eprints/ePrints_banner_r3_c6.gif" width="469" height="37" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="31" border="0" alt="" /></td> </tr> <tr> <td colspan="3"><img name="ePrints_banner_r4_c3" src="/images/eprints/ePrints_banner_r4_c3.gif" width="190" height="6" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="6" border="0" alt="" /></td> </tr> <tr> <td colspan="2"><img name="ePrints_banner_r5_c3" src="/images/eprints/ePrints_banner_r5_c3.gif" width="149" height="1" border="0" alt="" /></td> <td rowspan="2" colspan="2"><a href="/information.html" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821132634_0,0,25,null,'ePrints_banner_r5_c5');MM_swapImage('ePrints_banner_r5_c5','','/images/eprints/ePrints_banner_r5_c5_f2.gif',1);"><img name="ePrints_banner_r5_c5" src="/images/eprints/ePrints_banner_r5_c5.gif" width="57" height="25" border="0" alt="About" /></a></td> <td rowspan="2"><a href="/view/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133021_1,0,25,null,'ePrints_banner_r5_c7');MM_swapImage('ePrints_banner_r5_c7','','/images/eprints/ePrints_banner_r5_c7_f2.gif',1);"><img name="ePrints_banner_r5_c7" src="/images/eprints/ePrints_banner_r5_c7.gif" width="68" height="25" border="0" alt="Browse" /></a></td> <td rowspan="2"><a href="/perl/search/simple" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133201_2,0,25,null,'ePrints_banner_r5_c8');MM_swapImage('ePrints_banner_r5_c8','','/images/eprints/ePrints_banner_r5_c8_f2.gif',1);"><img name="ePrints_banner_r5_c8" src="/images/eprints/ePrints_banner_r5_c8.gif" width="68" height="25" border="0" alt="Search" /></a></td> <td rowspan="2"><a href="/perl/register" onMouseOut="MM_swapImgRestore();MM_startTimeout();" onMouseOver="MM_showMenu(window.mm_menu_1018171924_3,0,25,null,'ePrints_banner_r5_c9');MM_swapImage('ePrints_banner_r5_c9','','/images/eprints/ePrints_banner_r5_c9_f2.gif',1);"><img name="ePrints_banner_r5_c9" src="/images/eprints/ePrints_banner_r5_c9.gif" width="68" height="25" border="0" alt="register" /></a></td> <td rowspan="2"><a href="/perl/users/home" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133422_4,0,25,null,'ePrints_banner_r5_c10');MM_swapImage('ePrints_banner_r5_c10','','/images/eprints/ePrints_banner_r5_c10_f2.gif',1);"><img name="ePrints_banner_r5_c10" src="/images/eprints/ePrints_banner_r5_c10.gif" width="82" height="25" border="0" alt="user area" /></a></td> <td rowspan="2"><a href="/help/" onMouseOut="MM_swapImgRestore();MM_startTimeout()" onMouseOver="MM_showMenu(window.mm_menu_0821133514_5,0,25,null,'ePrints_banner_r5_c11');MM_swapImage('ePrints_banner_r5_c11','','/images/eprints/ePrints_banner_r5_c11_f2.gif',1);"><img name="ePrints_banner_r5_c11" src="/images/eprints/ePrints_banner_r5_c11.gif" width="69" height="25" border="0" alt="Help" /></a></td> <td rowspan="3" colspan="4"><img name="ePrints_banner_r5_c12" src="/images/eprints/ePrints_banner_r5_c12.gif" width="98" height="40" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="1" border="0" alt="" /></td> </tr> <tr> <td rowspan="2"><img name="ePrints_banner_r6_c3" src="/images/eprints/ePrints_banner_r6_c3.gif" width="44" height="39" border="0" alt="ePrints home" /></td> <td><a href="/" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('ePrints_banner_r6_c4','','/images/eprints/ePrints_banner_r6_c4_f2.gif',1);"><img name="ePrints_banner_r6_c4" src="/images/eprints/ePrints_banner_r6_c4.gif" width="105" height="24" border="0" alt="ePrints home" /></a></td> <td><img src="/images/eprints/spacer.gif" width="1" height="24" border="0" alt="" /></td> </tr> <tr> <td><img name="ePrints_banner_r7_c2" src="/images/eprints/ePrints_banner_r7_c2.gif" width="104" height="15" border="0" alt="" /></td> <td colspan="8"><img name="ePrints_banner_r7_c4" src="/images/eprints/ePrints_banner_r7_c4.gif" width="517" height="15" border="0" alt="" /></td> <td><img src="/images/eprints/spacer.gif" width="1" height="15" border="0" alt="" /></td> </tr> </table></td> </tr> <tr><td><table width="100%" style="font-size: 90%; border: solid 1px #ccc; padding: 3px"><tr> <td align="left"><a href="http://eprints.utas.edu.au/cgi/users/home">Login</a> | <a href="http://eprints.utas.edu.au/cgi/register">Create Account</a></td> <td align="right" style="white-space: nowrap"> <form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/search" style="display:inline"> <input class="ep_tm_searchbarbox" size="20" type="text" name="q" /> <input class="ep_tm_searchbarbutton" value="Search" type="submit" name="_action_search" /> <input type="hidden" name="_order" value="bytitle" /> <input type="hidden" name="basic_srchtype" value="ALL" /> <input type="hidden" name="_satisfyall" value="ALL" /> </form> </td> </tr></table></td></tr> <tr> <td class="toplinks"><!-- InstanceBeginEditable name="content" --> <div align="center"> <table width="720" class="ep_tm_main"><tr><td align="left"> <h1 class="ep_tm_pagetitle">Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions</h1> <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Brook, Barry W.</span> and <span class="person_name">Bowman, David M.J.S.</span> (2002) <xhtml:em>Explaining the Pleistocene megafaunal extinctions: Models, chronologies, and assumptions.</xhtml:em> PNAS - National Academy of Sciences. Proceedings, 99 (23). pp. 14624-14627. ISSN 0027-8424</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2427/1/Brook_Bowman_-_Megafaunal_extinction.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2427/1/Brook_Bowman_-_Megafaunal_extinction.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />88Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3142" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1073/pnas.232126899">http://dx.doi.org/10.1073/pnas.232126899</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Understanding of the Pleistocene megafaunal extinctions has been advanced recently by the application of simulation models and new developments in geochronological dating. Together these have been used to posit a rapid demise of megafauna due to over-hunting by invading humans. However, we demonstrate that the results of these extinction models are highly sensitive to implicit assumptions concerning the degree of prey naivety to human hunters. In addition, we show that in Greater Australia, where the extinctions occurred well before the end of the last Ice Age (unlike the North American situation), estimates of the duration of coexistence between humans and megafauna remain imprecise. Contrary to recent claims, the existing data do not prove the ‘‘blitzkrieg’’ model of overkill.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Key Centre for Tropical Wildlife Management, Northern Territory University, Darwin 0909, Northern Territory, Australia</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270000.html">270000 Biological Sciences</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2427</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">12 Nov 2007 10:41</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2427;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=2427">item control page</a></p> </td></tr></table> </div> <!-- InstanceEndEditable --></td> </tr> <tr> <td><!-- #BeginLibraryItem "/Library/footer_eprints.lbi" --> <table width="795" border="0" align="left" cellpadding="0" class="footer"> <tr valign="top"> <td colspan="2"><div align="center"><a href="http://www.utas.edu.au">UTAS home</a> | <a href="http://www.utas.edu.au/library/">Library home</a> | <a href="/">ePrints home</a> | <a href="/contact.html">contact</a> | <a href="/information.html">about</a> | <a href="/view/">browse</a> | <a href="/perl/search/simple">search</a> | <a href="/perl/register">register</a> | <a href="/perl/users/home">user area</a> | <a href="/help/">help</a></div><br /></td> </tr> <tr><td colspan="2"><p><img src="/images/eprints/footerline.gif" width="100%" height="4" /></p></td></tr> <tr valign="top"> <td width="68%" class="footer">Authorised by the University Librarian<br /> © University of Tasmania ABN 30 764 374 782<br /> <a href="http://www.utas.edu.au/cricos/">CRICOS Provider Code 00586B</a> | <a href="http://www.utas.edu.au/copyright/copyright_disclaimers.html">Copyright & Disclaimers</a> | <a href="http://www.utas.edu.au/accessibility/index.html">Accessibility</a> | <a href="http://eprints.utas.edu.au/feedback/">Site Feedback</a> </td> <td width="32%"><div align="right"> <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><img src="http://www.utas.edu.au/shared/logos/unioftasstrip.gif" alt="University of Tasmania Home Page" width="260" height="16" border="0" align="right" /></a></p> <p align="right" class="NoPrint"><a href="http://www.utas.edu.au/"><br /> </a></p> </div></td> </tr> <tr valign="top"> <td><p> </p></td> <td><div align="right"><span class="NoPrint"><a href="http://www.eprints.org/software/"><img src="/images/eprintslogo.gif" alt="ePrints logo" width="77" height="29" border="0" align="bottom" /></a></span></div></td> </tr> </table> <!-- #EndLibraryItem --> <div align="center"></div></td> </tr> </table> </body> </html>