Light cast on lifestyle and diet of first New Zealanders
|Isotopic study sheds light on the diet, lifestyles and movements of|
New Zealand's first settlers [Credit: Veer Images]
The researchers, co-ordinated by the Department of Anatomy's Associate Professor Hallie Buckley, undertook isotopic analyses of samples recovered from the koiwi tangata (human remains) of the Rangitane iwi tupuna prior to their reburial at Wairau Bar in 2009.
The Wairau Bar Koiwi Project is part of a larger archaeological project being conducted in collaboration with the Rangitane iwi, the Canterbury Museum and the University of Otago. The interpretation of these new data was strengthened by collaboration with colleagues from SPAR, the University of Otago archaeologists who undertook the more recent archaeological excavations at the site.
"By examining ratios of carbon and nitrogen isotopes present in bone collagen we were able to estimate individuals' broad dietary makeup over a 10-20 year period prior to death. Our analysis of strontium isotopes in teeth allowed us to distinguish between people growing up in geologically different landscapes," says Dr Rebecca Kinaston, who conducted the isotope analyses on the bones and teeth.
The tupuna were originally buried in three separate groups in a large village at the Wairau site. First excavated over 70 years ago, this ancient settlement is one of the most important archaeological sites in New Zealand because of its age and the range of east Polynesian type artefacts found there.
|Hallie Buckley and Rebecca Kinaston [Credit: University of Otago]|
The new isotopic analysis of bone collagen and teeth suggests that members of this first group shared similar diets and childhood origins, while individuals in Groups 2 and 3 displayed highly variable diets and spent their childhood in geologically different areas to Group 1.
"Interestingly, Group 1 individuals showed a dietary trend similar to that identified in prehistoric individuals from a site in the Marquesas Islands in French Polynesia, with both sets of people sharing a low diversity in protein sources," Dr Kinaston says.
In contrast, dietary patterns in Groups 2 and 3 were found to be in line with individuals who spent most of their lives eating from a wide range of protein sources, such as would be available through New Zealand's then bountiful seal, moa and other bird populations.
The large range found in Group 2 and 3's strontium isotope ratios could reflect that they grew up in regions outside of Wairau Bar -- but not where Group 1 did -- and also that they were hunting and gathering across a wide geographical range, says Associate Professor Hallie Buckley.
"This is consistent with other archaeological evidence that the first settlers in New Zealand were highly mobile. That members of Groups 2 and 3 were still buried back at Wairau suggests that this village may have fulfilled both a ceremonial and home base function."
If this is the case, this may represent the roots of the tangihanga ritual, in which Maori are buried in their ancestral lands, developing among these first New Zealanders, Associate Professor Buckley says.
Source: University of Otago [May 16, 2013]
Labels Anthropology, Archaeology, Australasia, Breakingnews, Forensics, Indigenous Cultures, New Zealand, Oceans