{"id":12812,"date":"2024-10-09T10:00:00","date_gmt":"2024-10-09T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=12812"},"modified":"2024-09-27T05:25:28","modified_gmt":"2024-09-27T05:25:28","slug":"small-populations-of-stone-age-people-drove-dwarf-hippos-and-elephants-to-extinction-on-cyprus","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/small-populations-of-stone-age-people-drove-dwarf-hippos-and-elephants-to-extinction-on-cyprus\/","title":{"rendered":"Small populations of Stone Age people drove dwarf hippos and elephants to extinction on Cyprus"},"content":{"rendered":"\n<div class=\"theconversation-article-body\">\n\n  <span><a href=\"https:\/\/theconversation.com\/profiles\/corey-j-a-bradshaw-9183\" target=\"_blank\" rel=\"noopener\">Corey J. A. Bradshaw<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/flinders-university-972\" target=\"_blank\" rel=\"noopener\">Flinders University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/christian-reepmeyer-1527424\" target=\"_blank\" rel=\"noopener\">Christian Reepmeyer<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/deutsches-archaologisches-institut-german-archaeological-institute-6198\" target=\"_blank\" rel=\"noopener\">Deutsches Arch\u00e4ologisches Institut &#8211; German Archaeological Institute<\/a><\/em>, and <a href=\"https:\/\/theconversation.com\/profiles\/theodora-moutsiou-1527770\" target=\"_blank\" rel=\"noopener\">Theodora Moutsiou<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/university-of-cyprus-1426\" target=\"_blank\" rel=\"noopener\">University of Cyprus<\/a><\/em><\/span>\n\n  <p>Imagine growing up beside the eastern Mediterranean Sea 14,000 years ago. You\u2019re an accomplished sailor of the small watercraft you and your fellow villagers make, and you live off both the sea and the land. <\/p>\n\n<p>But times have been difficult \u2014 there just isn\u2019t the same amount of game or fish around as when you were a child. Maybe it\u2019s time to look elsewhere for food.<\/p>\n\n<p>Now imagine <a href=\"https:\/\/doi.org\/10.3390\/heritage5040160\" target=\"_blank\" rel=\"noopener\">going farther<\/a> than ever  before in your <a href=\"https:\/\/journals.plos.org\/plosone\/article?id=10.1371\/journal.pone.0299765\" target=\"_blank\" rel=\"noopener\">little boat<\/a>, accompanied maybe by a few others, when suddenly you spot something on the horizon. Is that an island?<\/p>\n\n\n\n<h2 id=\"an-island-of-tiny-elephants-and-hippos\">An island of tiny elephants and hippos<\/h2>\n\n<p>Welcome to <a href=\"https:\/\/maps.app.goo.gl\/D6LAmqHQic4oNJjz7\" target=\"_blank\" rel=\"noopener\">Cyprus<\/a> as the world emerges from the <a href=\"https:\/\/www.livescience.com\/40311-pleistocene-epoch.html\" target=\"_blank\" rel=\"noopener\">last ice age<\/a>. You are the first human to set your eyes on this huge, <a href=\"http:\/\/doi.org\/10.4000\/paleorient.2565\" target=\"_blank\" rel=\"noopener\">heavily forested island<\/a> teeming with food. <\/p>\n\n<p>When you beach your boat to have a look around, you can\u2019t believe what you\u2019re seeing \u2014 tiny boar-sized hippos and horse-sized elephants that look like babies to your eyes. There are so many of them, and you\u2019re hungry after the long journey.<\/p>\n\n<p>The diminutive beasts don\u2019t seem to show any fear. You easily kill a few and preserve the meat as best you can for the long journey back. <\/p>\n\n<p>When you get home, you are excited to let everyone in the village know what you\u2019ve found. Soon enough, you organise a major expedition back to the island.<\/p>\n\n<p>Of course, we\u2019ll never know if this kind of scenario took place, but it\u2019s a plausible story of how and when the <a href=\"https:\/\/cosmosmagazine.com\/history\/archaeology\/cyprus-stone-age-settlement\/\" target=\"_blank\" rel=\"noopener\">first humans managed to get to Cyprus<\/a>. It also illustrates how they might have quickly brought about the demise of the <a href=\"https:\/\/uchytel.com\/Hippopotamus-minor\" target=\"_blank\" rel=\"noopener\">tiny hippopotamus<\/a> <em>Phanourios minor<\/em>, as well as the <a href=\"https:\/\/uchytel.com\/Palaeoloxodon-cypriotes\" target=\"_blank\" rel=\"noopener\">dwarf elephant<\/a> <em>Palaeoloxodon cypriotes<\/em>.<\/p>\n\n<h2 id=\"dwarf-giants\">Dwarf \u2018giants\u2019<\/h2>\n\n<p>Cyprus wasn\u2019t the only Mediterranean island with dwarf wildlife. In fact, Crete, Malta, Sicily, Sardinia and many other islands had their own <a href=\"https:\/\/www.theextinctions.com\/articles-1\/elephants-of-the-aegean-dwarfs-and-giants-of-the-ancient-sea\" target=\"_blank\" rel=\"noopener\">dwarf elephants<\/a> and <a href=\"https:\/\/www.theguardian.com\/science\/2017\/jan\/25\/sun-sea-and-fossils-the-mediterranean-is-a-surprising-palaeontological-paradise\" target=\"_blank\" rel=\"noopener\">hippos<\/a>. <\/p>\n\n<p><iframe loading=\"lazy\" id=\"tWIqa\" class=\"tc-infographic-datawrapper\" src=\"https:\/\/datawrapper.dwcdn.net\/tWIqa\/2\/\" height=\"400px\" width=\"100%\" style=\"border: 0;\" scrolling=\"no\" frameborder=\"0\"><\/iframe><\/p>\n\n<p><a href=\"https:\/\/www.sapiens.org\/biology\/island-dwarfism\/\" target=\"_blank\" rel=\"noopener\">Island dwarfism<\/a> \u2014 the process in which a once large, mainland species evolves to become smaller in response to fewer resources and predators \u2014 is in fact quite common. Unfortunately, the process also makes such species <a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.add8606\" target=\"_blank\" rel=\"noopener\">more vulnerable to rapid environmental change<\/a>, including the arrival of new predators such as humans.<\/p>\n\n<figure class=\"align-right zoomable\">\n            <a href=\"https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip\" target=\"_blank\" rel=\"noopener\"><img  decoding=\"async\"  alt=\"Photo of a museum display of the skeleton of a dwarf hippo and an illustration of what it may have looked like in life.\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=237&amp;fit=clip\"  data-pk-srcset=\"https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=825&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=825&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=825&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=1037&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=1037&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/619365\/original\/file-20240914-16-rpx5vp.jpeg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=1037&amp;fit=crop&amp;dpr=3 2262w\" ><\/a>\n            <figcaption>\n              <span class=\"caption\">Skeleton of a dwarf hippo (<em>Phanourios minor<\/em>) and artist\u2019s reconstruction of the animal displayed at the Akamas Geology and Palaeontology Information Centre in Pano Arodes, western Cyprus.<\/span>\n              <span class=\"attribution\"><a class=\"source\" href=\"https:\/\/panoarodes.com\/akamas-geology-and-paleontology-information-center\/\" target=\"_blank\" rel=\"noopener\">CJA Bradshaw \/ Flinders University<\/a><\/span>\n            <\/figcaption>\n          <\/figure>\n\n<p>The Cypriot dwarf hippopotamus was the <a href=\"http:\/\/doi.org\/10.1016\/j.palaeo.2019.05.032\" target=\"_blank\" rel=\"noopener\">smallest dwarf hippo<\/a> in the Mediterranean region. Genetic data suggest <a href=\"http:\/\/doi.org\/10.1093\/zoolinnean\/zlab089\" target=\"_blank\" rel=\"noopener\">it diverged<\/a> from the <a href=\"https:\/\/www.awf.org\/wildlife-conservation\/hippopotamus\" target=\"_blank\" rel=\"noopener\">common hippopotamus<\/a> (<em>Hippopotamus amphibius<\/em>) roughly 1.5 million years ago. <\/p>\n\n<p>The Cypriot dwarf elephant was less than 10% of the size of its mainland ancestor, <a href=\"https:\/\/www.researchgate.net\/publication\/237394736_Palaeloxodon_cypriotes_the_dwarf_elephant_of_Cyprus_Size_and_scaling_comparisons_with_P_falconeri_Sicily-Malta_and_mainland_P_antiquus\" target=\"_blank\" rel=\"noopener\">the straight-tusked elephant<\/a> (<em>Palaeoloxodon antiquus<\/em>) that inhabited Europe and Western Asia during the Middle and Late Pleistocene.<\/p>\n\n<h2 id=\"an-extinction-controversy\">An extinction controversy<\/h2>\n\n<p>For a long time, many <a href=\"https:\/\/ibdigital.uib.es\/greenstone\/collect\/monografiesHistoriaNatural\/index\/assoc\/Monograf\/iesSHNB_\/2005vol0\/12p193.dir\/MonografiesSHNB_2005vol012p193.pdf\" target=\"_blank\" rel=\"noopener\">archaeologists<\/a> and <a href=\"https:\/\/doi.org\/10.1371%2Fjournal.pone.0134429\" target=\"_blank\" rel=\"noopener\">palaeontologists<\/a> didn\u2019t believe  humans had anything to do with the extinction of these two \u201c<a href=\"https:\/\/rewilding.academy\/what-is-megafauna-2\/\" target=\"_blank\" rel=\"noopener\">megafauna<\/a>\u201d species on Cyprus.<\/p>\n\n<p>The doubters assumed that either people arrived well after the extinctions, or the earliest humans were too few to be able to kill off entire species.<\/p>\n\n\n\n<p>Earlier this year we showed that <a href=\"https:\/\/doi.org\/10.1073\/pnas.2318293121\" target=\"_blank\" rel=\"noopener\">people came to Cyprus between 14,000 and 13,000 years ago<\/a>, well before hippos and elephants went extinct. We also showed that the human population likely grew to several thousand within a few hundred years of arrival. But we didn\u2019t know whether this human population was large enough to drive the dwarf hippos and elephants to extinction.<\/p>\n\n<p>Our new <a href=\"https:\/\/doi.org\/10.1098\/rspb.2024.0967\" target=\"_blank\" rel=\"noopener\">research published today<\/a> answers this question with a combination of several different types of mathematical models. <\/p>\n\n\n\n<h2 id=\"could-a-small-human-population-cause-extinction\">Could a small human population cause extinction?<\/h2>\n\n<p>Even though these animals are long extinct, we can draw some conclusions about their likely population because we can estimate their weights from palaeontological information. The dwarf hippo weighed around 130kg, and the dwarf elephant came in at just over 500kg. <\/p>\n\n<p>We also know how to translate weights to estimates of population size, longevity, survival and fertility. We can even use data collected from related species still living today, such as the <a href=\"https:\/\/taronga.org.au\/animals\/pygmy-hippopotamus\" target=\"_blank\" rel=\"noopener\">pygmy hippo<\/a> and the <a href=\"https:\/\/www.worldwildlife.org\/species\/african-elephant\" target=\"_blank\" rel=\"noopener\">African elephant<\/a>, to estimate how fast they would have grown.<\/p>\n\n\n\n<p>With this information, we built computer models of what would have happened to the two mini-megafauna species on Cyprus when human hunters arrived. We estimated how efficient human hunters would be, how long it would take them to process each carcass, and how much energy hunter-gatherers need to survive.<\/p>\n\n<p>We also estimated how much of the human diet included these species, and how this proportion might have changed as the dwarf hippo and elephant numbers dwindled.<\/p>\n\n<p>We found that even a small human population, numbering between 3,000 and 7,000, could have easily driven first dwarf hippos, and then dwarf elephants, to extinction. Our model showed the process would have taken less than 1,000 years. This prediction matches the sequence of extinction inferred from the palaeontological record.<\/p>\n\n<p>Our results provide strong evidence that palaeolithic peoples in Cyprus were at least partially, if not entirely, responsible for megafauna extinctions during the Late Pleistocene and early Holocene. <\/p>\n\n\n\n<p>Cyprus was the perfect place to test our models because the island offers an ideal set of conditions to examine whether the arrival of humans ultimately led to the extinction of its megafauna. This is because Cyprus was a relatively simple test case \u2013 a small island of around 11,000 square kilometres at the time, with only two species of megafauna.<\/p>\n\n<p>Our research therefore improves our understanding of how even small human populations can disrupt ecosystems and cause major extinctions, particularly in times of rapid environmental change.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"The Conversation\"  width=\"1\"  height=\"1\"  style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important\"  referrerpolicy=\"no-referrer-when-downgrade\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/counter.theconversation.com\/content\/238999\/count.gif?distributor=republish-lightbox-basic\" ><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n\n\n\n  <p><span><a href=\"https:\/\/theconversation.com\/profiles\/corey-j-a-bradshaw-9183\" target=\"_blank\" rel=\"noopener\">Corey J. A. Bradshaw<\/a>, Matthew Flinders Professor of Global Ecology and Node Leader in the ARC Centre of Excellence for Indigenous and Environmental Histories and Futures, <em><a href=\"https:\/\/theconversation.com\/institutions\/flinders-university-972\" target=\"_blank\" rel=\"noopener\">Flinders University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/christian-reepmeyer-1527424\" target=\"_blank\" rel=\"noopener\">Christian Reepmeyer<\/a>, Deputy Director &#8211; Oceania, <em><a href=\"https:\/\/theconversation.com\/institutions\/deutsches-archaologisches-institut-german-archaeological-institute-6198\" target=\"_blank\" rel=\"noopener\">Deutsches Arch\u00e4ologisches Institut &#8211; German Archaeological Institute<\/a><\/em>, and <a href=\"https:\/\/theconversation.com\/profiles\/theodora-moutsiou-1527770\" target=\"_blank\" rel=\"noopener\">Theodora Moutsiou<\/a>, Special Scientist, <em><a href=\"https:\/\/theconversation.com\/institutions\/university-of-cyprus-1426\" target=\"_blank\" rel=\"noopener\">University of Cyprus<\/a><\/em><\/span><\/p>\n\n  <p>This article is republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"noopener\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/small-populations-of-stone-age-people-drove-dwarf-hippos-and-elephants-to-extinction-on-cyprus-238999\" target=\"_blank\" rel=\"noopener\">original article<\/a>.<\/p>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"Corey J. A. Bradshaw, Flinders University; Christian Reepmeyer, Deutsches Arch\u00e4ologisches Institut &#8211; German Archaeological Institute, and Theodora Moutsiou,&hellip;\n","protected":false},"author":15,"featured_media":12814,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/5\/50\/Neanderthal_Flintworkers_%28Knight%2C_1920%29.jpg","fifu_image_alt":"","footnotes":""},"categories":[18,11],"tags":[178,1763,1765,1764,1769,1157,687,1640,28,1766,1768,1016,1239,25,1767,474],"class_list":{"0":"post-12812","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-history","8":"category-nature","9":"tag-animal","10":"tag-cyprus","11":"tag-dwarf-elephants","12":"tag-dwarf-hippopotamus","13":"tag-early-holocene","14":"tag-ecology","15":"tag-ecosystem","16":"tag-extinction","17":"tag-hunting","18":"tag-island-dwarfism","19":"tag-late-pleistocene","20":"tag-mediterranean","21":"tag-megafauna","22":"tag-paleontology","23":"tag-straight-tusked-elephant","24":"tag-the-conversation","25":"cs-entry","26":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=12812"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12812\/revisions"}],"predecessor-version":[{"id":12813,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/12812\/revisions\/12813"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/12814"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=12812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=12812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=12812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}