A team of researchers with members from the U.S., Chile and New Zealand has uncovered evidence that contradicts the conventional view of the demographic collapse of the Rapa Nui people living on Easter Island, both before and after European contact. In their paper published in Proceedings of the National Academy of Sciences, the team describes how they conducted obsidian hydration dating of artifacts from the island to trace the history of human activity in the area and what they found in doing so.
To better understand what actually occurred both before and after Europeans arrived in the 1700's, the researchers used a technique known as obsidian hydration dating on artifacts found at various sites on the northern part of the island where the Rapa Nui lived. That allowed them to gain insights into how the land in that area had been used during different time periods. From that they were able to construct a timeline that showed where the people were living over the course of hundreds of years. And that, the researchers report, showed that rather than a population crash due to starvation, there were population shifts that reflected changing weather patterns. Some areas did see population losses before European contact, and some actually saw initial gains afterwards. The population did see a dramatic decline, of course, sometime thereafter as the Rapa Nui people became exposed to European diseases such as smallpox and syphilis and as many were taken and sold into slavery. This means, the team concludes, that there is little evidence of population collapse prior to European contact.
For more, see phys.org/news/2015-01.
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