{"id":883,"date":"2019-07-16T09:53:52","date_gmt":"2019-07-16T09:53:52","guid":{"rendered":"http:\/\/horizon.peachpuff-wolverine-566518.hostingersite.com\/?p=883"},"modified":"2019-07-16T09:55:26","modified_gmt":"2019-07-16T09:55:26","slug":"island-cores-unravel-mysteries-of-ancient-maltese-civilisation","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/horizon\/883\/island-cores-unravel-mysteries-of-ancient-maltese-civilisation\/","title":{"rendered":"Island cores unravel mysteries of ancient Maltese civilisation"},"content":{"rendered":"<h3 class=\"selectionShareable\"><strong style=\"font-size: 16px\">The mysteries of an ancient civilisation that survived for more than a millennium on the island of Malta \u2013 and then collapsed within two generations \u2013 have been unravelled by archaeologists who analysed pollen buried deep within the earth and ancient DNA from skulls and bones.<\/strong><\/h3>\n<div class=\"field field-name-body field-type-text-with-summary field-label-hidden\">\n<div class=\"field-items\">\n<div class=\"field-item even\">\n<p class=\"selectionShareable\">It\u2019s part of a field of work that is expanding the use of archaeological techniques into environments where they were previously thought to be unusable.<\/p>\n<p class=\"selectionShareable\">The Temple Culture of the Maltese archipelago in the Mediterranean began nearly 6,000 years ago and at its height probably numbered several thousand people \u2013 far denser than the people of mainland Europe could manage at the time. The island people constructed elaborate sacred sites, such as the famous\u00a0<a href=\"https:\/\/www.visitgozo.com\/where-to-go-in-gozo\/archaeological-sites\/ggantija-temples\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u0120gantija temple complex<\/a>, and their buildings are among the earliest free-standing buildings known.<\/p>\n<p class=\"selectionShareable\">But, after 1,500 years, they were gone.<\/p>\n<p class=\"selectionShareable\">Professor Caroline Malone, prehistory specialist at Queen\u2019s University Belfast, Northern Ireland, wanted to understand how the fragile island ecology sustained the people for so long despite drought, violent storms and soil erosion \u2013 and why it ultimately failed.<\/p>\n<p class=\"selectionShareable\">She ran an ambitious project,\u00a0<a href=\"https:\/\/cordis.europa.eu\/project\/rcn\/108041\/factsheet\/en\" target=\"_blank\" rel=\"noopener noreferrer\">Fragsus<\/a>, which drew on multiple tools to find some answers. Scientists drilled earth cores ranging from eight to 30 metres deep, dating the sediment using carbon dating to understand which time period it referred to.<\/p>\n<p class=\"selectionShareable\">They counted the pollen at 2cm intervals and analysed individual pollen grains using chemical signatures imprinted by the surrounding environment to understand what nutrients the parent plants were absorbing from the ground. Molluscs embedded in the soil revealed glimpses of the landscape since \u2018snails are very particular about where they live and don\u2019t move far,\u2019 said Prof. Malone.<\/p>\n<p class=\"selectionShareable\">Meanwhile, other specialists assessed the wear and tear on tens of thousands of human bones from a burial site to understand the islanders\u2019 lifestyles. The team broke new ground by analysing bone with a technique called ancient DNA (aDNA) analysis, says Prof. Malone. It had previously been thought that the warmth of any climate south of the Alps would destroy such old DNA. But it turned out that skulls buried at a relatively cool five metres\u2019 depth still harboured aDNA within thick bone behind the ear.<\/p>\n<p class=\"selectionShareable\"><strong>Erosion<\/strong><\/p>\n<p class=\"selectionShareable\">From what they\u2019ve uncovered, the team thinks that these people understood the importance of soil management to fend off starvation. Within a hundred years of their arrival on the tiny, 316 square km archipelago they had felled most of the trees, exposing the ground to drastic erosion.<\/p>\n<p class=\"selectionShareable\">To survive, they reared dairy animals rather than prioritising meat \u2013 killing off newborn livestock before they had a chance to graze. They mixed livestock manure back into the soil and may even have made back-breaking journeys carting soil washed into the valleys back uphill to refresh the upland fields. The evidence for this lies in strange, parallel ruts in the ground that may be cart tracks, as well as signs from the skeletons that soft tissue had sometimes been worn completely away by hard, repetitive activity.<\/p>\n<p class=\"selectionShareable\">Oddly, says Prof. Malone, they ate almost no fish.<\/p>\n<p class=\"selectionShareable\">To achieve such complex collaborative effort something powerful must have held the community together: the temples.<\/p>\n<p class=\"selectionShareable\">Until now, the Temple Culture was thought to have centred on the worship of a mother goddess, but Prof. Malone thinks it was more of a clubhouse culture, focused on ritual and feasting but where food \u2013 rather than a deity \u2013 was revered. In the complexes it is now clear that the people displayed their livestock and harvests on special benches and altars, feasted, and also stored food.<\/p>\n<p class=\"selectionShareable\">There is no skeletal evidence of violent death and no fortifications, said Prof. Malone. Instead the society appears to have survived through cooperation and sharing.<\/p>\n<p class=\"selectionShareable\"><strong>Deficiencies<\/strong><\/p>\n<p class=\"selectionShareable\">Despite the society\u2019s strength and success, as centuries passed the soil erosion and climate conditions worsened, as evidenced by the different types of pollen in the soil, the diminishing number of tree remains and the human bones wracked with evidence of dietary deficiencies.<\/p>\n<p class=\"selectionShareable\">In the final centuries of the Temple Culture, between 2600 BC and 2400 BC, half of those dying were children.<\/p>\n<p class=\"selectionShareable\">Other factors likely contributed, said Prof. Malone. Adult skulls from this time are greatly varied, their DNA indicating the arrival of immigrants from as far as the Eurasian Steppes and sub-Saharan Africa, possibly causing population pressure and new diseases.<\/p>\n<p class=\"selectionShareable\">The decisive blow may have been an unknown catastrophe that occurred around 2350 BC, a period during which, according to tree ring analysis, the whole region suffered a catastrophic climate event \u2013 possibly a dust cloud caused by a volcanic eruption.<\/p>\n<div class=\"dynamic_article_image_bloc\">\n<figure style=\"width: 1390px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/horizon-media.s3-eu-west-1.amazonaws.com\/s3fs-public\/IMCEUpload\/laurel%20forest%203_small.jpg\" alt=\"Palaeo environmental DNA in sediment cores is providing a long term perspective of how Spain\u2019s Canary Islands weathered past climate change. Image credit - Lea de Nascimento \" width=\"1400\" height=\"1050\" \/><figcaption class=\"wp-caption-text\">Palaeo environmental DNA in sediment cores is providing a long term perspective of how Spain\u2019s Canary Islands weathered past climate change. Image credit &#8211; Lea de Nascimento<\/figcaption><\/figure>\n<\/div>\n<p class=\"selectionShareable\"><strong>Laboratories<\/strong><\/p>\n<p class=\"selectionShareable\">Islands can be used as laboratories for understanding change in the wider world, said Prof. Malone.<\/p>\n<p class=\"selectionShareable\">However, the geographical peculiarities of islands can also present problems by rendering conventional research techniques redundant. In Spain\u2019s Canary Islands, for example, ancient pollen is not well-preserved in the local terrain. What\u2019s more, many important plants on the islands \u2013 such as its emblematic laurel trees \u2013 produce no, or little, pollen, and the environmental conditions have also eroded other pieces of evidence, such as macrofossils.<\/p>\n<p class=\"selectionShareable\">Dr Lea de Nascimento, a specialist in ecology at the Universidad de La Laguna in Tenerife said: \u2018We lack (good preservation of) all the conventional proxies.\u2019<\/p>\n<p class=\"selectionShareable\">She wants to piece together the history of vegetation on the Canaries \u2013 in particular, what they were like before humans arrived over 2,000 years ago. To do so, she is using a new palaeoecological technique called palaeoenvironmental DNA analysis.<\/p>\n<div class=\"quote-view quotesBlock quote_horizontal\">\n<blockquote>\n<p class=\"selectionShareable\">\u00a0&#8216;If you have a long perspective you will know the resilience of ecosystems.<\/p>\n<\/blockquote>\n<div class=\"quote-view quotesBlock quote_horizontal\" style=\"font-size: 16px;font-style: normal\">\n<blockquote>\n<p class=\"selectionShareable\">Lea de Nascimento, Universidad de La Laguna, Tenerife<\/p>\n<\/blockquote>\n<\/div>\n<\/div>\n<p class=\"selectionShareable\">Environmental DNA (eDNA) is left in soil or water by microorganisms, plant and animal species, and scientists increasingly scan for it to find out what\u2019s going on in today\u2019s environment. It is a relatively new palaeoecological tool, which has so far been used in the coldest and driest places because of its vulnerability to warmth and humidity. But Dr de Nascimento is now probing for it in core samples spanning several thousand years from the islands.<\/p>\n<p class=\"selectionShareable\">For the ISLANDPALECO project, she has spent two years learning from experts at a dedicated laboratory in New Zealand how to search for palaeo environmental DNA in sediment cores. After a year of setbacks, she has now found 100-year-old DNA of a much richer variety than can be found in the pollen record. She is still hoping to retrieve older palaeo environmental DNA.<\/p>\n<p class=\"selectionShareable\">\u2018If you have a long perspective you will know the resilience of ecosystems,\u2019 she said. \u2018It will help us understand how an ecosystem will react if we keep putting pressure on it in the future \u2013 or in response to climate change.\u2019<\/p>\n<p class=\"selectionShareable\">She says that knowing more about past ecosystems will also help today\u2019s conservationists restore landscapes depleted by humans and the animals they brought with them.<\/p>\n<p class=\"selectionShareable\">\u2018The problem is you could invest a lot of money restoring an ecosystem that was never there,\u2019 she said.<\/p>\n<div class=\"dynamic_article_image_bloc\">\n<figure style=\"width: 974px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/horizon-media.s3-eu-west-1.amazonaws.com\/s3fs-public\/IMCEUpload\/malta-timeline_1.jpg\" alt=\"Malta's lost civilisation only lasted 1,500 years but it produced some of the oldest buildings still standing today. Image credit - Horizon\" width=\"984\" height=\"1816\" \/><figcaption class=\"wp-caption-text\">Malta&#8217;s lost civilisation only lasted 1,500 years but it produced some of the oldest buildings still standing today. Image credit &#8211; Horizon<\/figcaption><\/figure>\n<\/div>\n<p class=\"selectionShareable\"><em>The research in this article was funded by the EU. If you liked this article, please consider sharing it on social media.<\/em><\/p>\n<p><em>Originally published on <a href=\"https:\/\/horizon-magazine.eu\">Horizon<\/a>.\u00a0<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The mysteries of an ancient civilisation that survived for more than a millennium on the island of Malta \u2013 and then collapsed within two generations \u2013 have been unravelled by archaeologists who analysed pollen buried deep within the earth and ancient DNA from skulls and bones. It\u2019s part of a field of work that is &#8230; <a title=\"Island cores unravel mysteries of ancient Maltese civilisation\" class=\"read-more\" href=\"https:\/\/scienceblog.com\/horizon\/883\/island-cores-unravel-mysteries-of-ancient-maltese-civilisation\/\" aria-label=\"Read more about Island cores unravel mysteries of ancient Maltese civilisation\">Read more<\/a><\/p>\n","protected":false},"author":316,"featured_media":885,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"generate_page_header":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[118],"tags":[176,122,79,24],"class_list":["post-883","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-social-sciences","tag-archaeology","tag-cultural-heritage","tag-research","tag-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Island cores unravel mysteries of ancient Maltese civilisation - Horizon Magazine Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceblog.com\/horizon\/883\/island-cores-unravel-mysteries-of-ancient-maltese-civilisation\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Island cores unravel mysteries of ancient Maltese civilisation\" \/>\n<meta property=\"og:description\" content=\"The mysteries of an ancient civilisation that survived for more than a millennium on the island of Malta \u2013 and then collapsed within two generations \u2013 have been unravelled by archaeologists who analysed pollen buried deep within the earth and ancient DNA from skulls and bones. 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