Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

Multiproxy isotopic analyses of human skeletal material from Rapa Nui : Evaluating the evidence from carbonates, bulk collagen, and amino acids. / Commendador, Amy S.; Finney, Bruce P.; Fuller, Benjamin T.; Tromp, Monica; Dudgeon, John V.

I: American Journal of Physical Anthropology, Bind 169, Nr. 4, 2019, s. 714-729.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Commendador, AS, Finney, BP, Fuller, BT, Tromp, M & Dudgeon, JV 2019, 'Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids', American Journal of Physical Anthropology, bind 169, nr. 4, s. 714-729. https://doi.org/10.1002/ajpa.23851

APA

Commendador, A. S., Finney, B. P., Fuller, B. T., Tromp, M., & Dudgeon, J. V. (2019). Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids. American Journal of Physical Anthropology, 169(4), 714-729. https://doi.org/10.1002/ajpa.23851

CBE

Commendador AS, Finney BP, Fuller BT, Tromp M, Dudgeon JV. 2019. Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids. American Journal of Physical Anthropology. 169(4):714-729. https://doi.org/10.1002/ajpa.23851

MLA

Vancouver

Commendador AS, Finney BP, Fuller BT, Tromp M, Dudgeon JV. Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids. American Journal of Physical Anthropology. 2019;169(4):714-729. https://doi.org/10.1002/ajpa.23851

Author

Commendador, Amy S. ; Finney, Bruce P. ; Fuller, Benjamin T. ; Tromp, Monica ; Dudgeon, John V. / Multiproxy isotopic analyses of human skeletal material from Rapa Nui : Evaluating the evidence from carbonates, bulk collagen, and amino acids. I: American Journal of Physical Anthropology. 2019 ; Bind 169, Nr. 4. s. 714-729.

Bibtex

@article{086fd857fb63485f9fa9f890e607b5bf,
title = "Multiproxy isotopic analyses of human skeletal material from Rapa Nui: Evaluating the evidence from carbonates, bulk collagen, and amino acids",
abstract = "Objectives: Stable isotope ratio analysis of bulk bone collagen dominates research into past diet; however, bone carbonate and compound specific isotope analyses (CSIA) of amino acids provide alternative, yet complementary, lines of evidence toward that same research goal. Together they inform on different aspects of diet, allowing greater certainty in reconstructions. Here we present new data on carbonate isotopes for Rapa Nui and reevaluate prehistoric diet in the context of these new and previously published bulk collagen and CSIA data. Materials and methods: We analyzed carbon isotopes in bone carbonate from 28 prehistoric human teeth from Rapa Nui. These represent a subset of material examined previously for carbon and nitrogen isotope ratios in bulk collagen. We then reevaluate prehistoric diet in light of these and other published data. In addition, we analyzed carbon and nitrogen isotope ratios in 28 modern plant specimens from Rapa Nui to better approximate the isotopic value of the terrestrial endmember. Results: Bulk data suggest a predominantly terrestrial diet, with the amount of marine sources incorporated varying though time. While previously argued to reveal greater amounts of marine consumption, reanalysis of recently published CSIA data suggests this result may relate to the proportion of carbon assimilated rather than consumed. Utilizing models incorporating concentration dependence for estimating dietary proportions results in much lower estimates of marine consumption, in line with findings of the bulk data. Discussion: While these data indicate a larger focus on terrestrial resources, limitations in all forms of analysis make it difficult to determine exact dietary contributions in this mixed system. Better understanding of the complex physiological processes governing isotopic routing and fractionation, and knowledge of appropriate isotopic endmember values are needed to advance this research.",
keywords = "amino acids, bone carbonates, bone collagen, diet reconstruction, Rapa Nui",
author = "Commendador, {Amy S.} and Finney, {Bruce P.} and Fuller, {Benjamin T.} and Monica Tromp and Dudgeon, {John V.}",
year = "2019",
doi = "10.1002/ajpa.23851",
language = "English",
volume = "169",
pages = "714--729",
journal = "American Journal of Physical Anthropology",
issn = "0002-9483",
publisher = "John Wiley & Sons, Inc.",
number = "4",

}

RIS

TY - JOUR

T1 - Multiproxy isotopic analyses of human skeletal material from Rapa Nui

T2 - Evaluating the evidence from carbonates, bulk collagen, and amino acids

AU - Commendador, Amy S.

AU - Finney, Bruce P.

AU - Fuller, Benjamin T.

AU - Tromp, Monica

AU - Dudgeon, John V.

PY - 2019

Y1 - 2019

N2 - Objectives: Stable isotope ratio analysis of bulk bone collagen dominates research into past diet; however, bone carbonate and compound specific isotope analyses (CSIA) of amino acids provide alternative, yet complementary, lines of evidence toward that same research goal. Together they inform on different aspects of diet, allowing greater certainty in reconstructions. Here we present new data on carbonate isotopes for Rapa Nui and reevaluate prehistoric diet in the context of these new and previously published bulk collagen and CSIA data. Materials and methods: We analyzed carbon isotopes in bone carbonate from 28 prehistoric human teeth from Rapa Nui. These represent a subset of material examined previously for carbon and nitrogen isotope ratios in bulk collagen. We then reevaluate prehistoric diet in light of these and other published data. In addition, we analyzed carbon and nitrogen isotope ratios in 28 modern plant specimens from Rapa Nui to better approximate the isotopic value of the terrestrial endmember. Results: Bulk data suggest a predominantly terrestrial diet, with the amount of marine sources incorporated varying though time. While previously argued to reveal greater amounts of marine consumption, reanalysis of recently published CSIA data suggests this result may relate to the proportion of carbon assimilated rather than consumed. Utilizing models incorporating concentration dependence for estimating dietary proportions results in much lower estimates of marine consumption, in line with findings of the bulk data. Discussion: While these data indicate a larger focus on terrestrial resources, limitations in all forms of analysis make it difficult to determine exact dietary contributions in this mixed system. Better understanding of the complex physiological processes governing isotopic routing and fractionation, and knowledge of appropriate isotopic endmember values are needed to advance this research.

AB - Objectives: Stable isotope ratio analysis of bulk bone collagen dominates research into past diet; however, bone carbonate and compound specific isotope analyses (CSIA) of amino acids provide alternative, yet complementary, lines of evidence toward that same research goal. Together they inform on different aspects of diet, allowing greater certainty in reconstructions. Here we present new data on carbonate isotopes for Rapa Nui and reevaluate prehistoric diet in the context of these new and previously published bulk collagen and CSIA data. Materials and methods: We analyzed carbon isotopes in bone carbonate from 28 prehistoric human teeth from Rapa Nui. These represent a subset of material examined previously for carbon and nitrogen isotope ratios in bulk collagen. We then reevaluate prehistoric diet in light of these and other published data. In addition, we analyzed carbon and nitrogen isotope ratios in 28 modern plant specimens from Rapa Nui to better approximate the isotopic value of the terrestrial endmember. Results: Bulk data suggest a predominantly terrestrial diet, with the amount of marine sources incorporated varying though time. While previously argued to reveal greater amounts of marine consumption, reanalysis of recently published CSIA data suggests this result may relate to the proportion of carbon assimilated rather than consumed. Utilizing models incorporating concentration dependence for estimating dietary proportions results in much lower estimates of marine consumption, in line with findings of the bulk data. Discussion: While these data indicate a larger focus on terrestrial resources, limitations in all forms of analysis make it difficult to determine exact dietary contributions in this mixed system. Better understanding of the complex physiological processes governing isotopic routing and fractionation, and knowledge of appropriate isotopic endmember values are needed to advance this research.

KW - amino acids

KW - bone carbonates

KW - bone collagen

KW - diet reconstruction

KW - Rapa Nui

UR - http://www.scopus.com/inward/record.url?scp=85065452609&partnerID=8YFLogxK

U2 - 10.1002/ajpa.23851

DO - 10.1002/ajpa.23851

M3 - Journal article

C2 - 31062347

AN - SCOPUS:85065452609

VL - 169

SP - 714

EP - 729

JO - American Journal of Physical Anthropology

JF - American Journal of Physical Anthropology

SN - 0002-9483

IS - 4

ER -