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Shifting diet, shifting culture? : A bioarchaeological approach to island dietary development on Iron-Age Öland, Baltic Sea

Wilhelmson, Helene LU (2017) In American Journal of Physical Anthropology 163(2). p.264-284
Abstract
Objectives
The diet and subsistence in Iron-Age Öland is debated as earlier studies and different archaeological sources seemingly provide conflicting interpretations. The objectives of this study are therefore to: (i) add new insights on diet and (ii) investigate the chronological variation in detail. It is common in studies of diet to investigate differences between datasets defined by archaeological periods (determined by artefact typology), but it is rare to explore whether these dietary changes are, in fact, well correlated with these temporal categories or not.

Materials and methods
Stable isotope analysis of 108 individuals and 25 animals was used to interpret diet in comparison with data from earlier studies.... (More)
Objectives
The diet and subsistence in Iron-Age Öland is debated as earlier studies and different archaeological sources seemingly provide conflicting interpretations. The objectives of this study are therefore to: (i) add new insights on diet and (ii) investigate the chronological variation in detail. It is common in studies of diet to investigate differences between datasets defined by archaeological periods (determined by artefact typology), but it is rare to explore whether these dietary changes are, in fact, well correlated with these temporal categories or not.

Materials and methods
Stable isotope analysis of 108 individuals and 25 animals was used to interpret diet in comparison with data from earlier studies. Different values of TLE (Trophic Level Effect) for δ15N were compared for interpretations of diet. Of the 108 individuals, 42 were subjected to 14C analysis in this study.

Results
The isotopes from Iron-Age animals on Öland indicate that the local, contemporary ecology is specific. The human isotope values show chronological development both when pooled in chronological groups by typology and by more specific 14C chronology.

Discussion
The new samples of animals as well as the use of 5‰ TLE for δ15N values results in the diet reinterpreted as mainly domesticate-based, with at least two shifts in diet occurring in the Iron Age. The use of 14C dates in connection with the stable isotope results indicates a dietary transition occurring between 200 BC and AD 200, a date range that spans two typologically determined time periods. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
chronology, paleodiet, δ13C, δ15N, 14C
in
American Journal of Physical Anthropology
volume
163
issue
2
pages
264 - 284
publisher
John Wiley & Sons
external identifiers
  • scopus:85017222223
  • wos:000401719300004
ISSN
0002-9483
DOI
10.1002/ajpa.23204
language
English
LU publication?
yes
id
8e6e25e7-9f37-44dd-b11a-e1dcadeabc6a
date added to LUP
2017-05-17 11:15:34
date last changed
2017-09-18 11:36:01
@article{8e6e25e7-9f37-44dd-b11a-e1dcadeabc6a,
  abstract     = {Objectives<br/>The diet and subsistence in Iron-Age Öland is debated as earlier studies and different archaeological sources seemingly provide conflicting interpretations. The objectives of this study are therefore to: (i) add new insights on diet and (ii) investigate the chronological variation in detail. It is common in studies of diet to investigate differences between datasets defined by archaeological periods (determined by artefact typology), but it is rare to explore whether these dietary changes are, in fact, well correlated with these temporal categories or not.<br/><br/>Materials and methods<br/>Stable isotope analysis of 108 individuals and 25 animals was used to interpret diet in comparison with data from earlier studies. Different values of TLE (Trophic Level Effect) for δ15N were compared for interpretations of diet. Of the 108 individuals, 42 were subjected to 14C analysis in this study.<br/><br/>Results<br/>The isotopes from Iron-Age animals on Öland indicate that the local, contemporary ecology is specific. The human isotope values show chronological development both when pooled in chronological groups by typology and by more specific 14C chronology.<br/><br/>Discussion<br/>The new samples of animals as well as the use of 5‰ TLE for δ15N values results in the diet reinterpreted as mainly domesticate-based, with at least two shifts in diet occurring in the Iron Age. The use of 14C dates in connection with the stable isotope results indicates a dietary transition occurring between 200 BC and AD 200, a date range that spans two typologically determined time periods.},
  author       = {Wilhelmson, Helene},
  issn         = {0002-9483},
  keyword      = {chronology,paleodiet,δ13C,δ15N,14C},
  language     = {eng},
  month        = {03},
  number       = {2},
  pages        = {264--284},
  publisher    = {John Wiley & Sons},
  series       = {American Journal of Physical Anthropology},
  title        = {Shifting diet, shifting culture? : A bioarchaeological approach to island dietary development on Iron-Age Öland, Baltic Sea},
  url          = {http://dx.doi.org/10.1002/ajpa.23204},
  volume       = {163},
  year         = {2017},
}