Transhumance pastoralism of Roccapelago (Modena, Italy) early‐modern individuals: Inferences from Sr isotopes of hair strands

Lugli, Federico; Cipriani, Anna; Tavaglione, Valentina; Traversari, Mirko; Benazzi, Stefano

doi:10.1002/ajpa.23643

Cited by 19 publications

(16 citation statements)

References 63 publications

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“…δ 15 N hair values vary with the rate and type of animal-protein consumed, with significantly higher values for Canadians who frequently eat seafood ( Fig 3 ) and significantly lower values in ovo-lacto vegetarians relative to the rest of the population ( Table 4 ). This finding reinforces previous studies that showed the importance of seafood consumption on δ 15 N hair variability at the individual [ 32 ] and at the population scale [see review in 10 ]. However, when including seafood and meat consumption as predictors in a multivariate regression model, those variables explain only a negligible portion of the δ 15 N hair variance in the Canadian population ( Table 6 ).…”

Section: Discussionsupporting

confidence: 91%

“…Keratinized tissues, hairs and nails, are an ideal substrate for analyzing δ 13 C, δ 15 N and δ 34 S values in dietary studies, as these elements are abundant in keratin and record dietary isotopic values chronologically as they grow [4][5][6][7]. Isotope data from hair can thus provide snapshots of the diet from an individual or population at a monthly temporal resolution [8][9][10][11][12]. Stable isotope variations in hair have been particularly successful in demonstrating dietary transition in human populations by tracing, for example, the progressive increase in processed food products in certain indigenous community diets [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada

et al. 2020

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Studying the isotope variability in fast-growing human tissues (e.g., hair, nails) is a powerful tool to investigate human nutrition. However, interpreting the controls of this isotopic variability at the population scale is often challenging as multiple factors can superimpose on the isotopic signals of a current population. Here, we analyse carbon, nitrogen, and sulphur isotopes in hair from 590 Canadian resident volunteers along with demographics, dietary and geographic information about each participant. We use a series of machine-learning regressions to demonstrate that the isotopic values in Canadian residents' hair are not only influenced by dietary choices but by geographic controls. First, we show that isotopic values in Canadian residents' hair have a limited range of variability consistent with the homogenization of Canadian dietary habits (as in other industrialized countries). As expected, some of the isotopic variability within the population correlates with recorded individual dietary choices. More interestingly, some regional spatial patterns emerge from carbon and sulphur isotope variations. The high carbon isotope composition of the hair of eastern Canadians relative to that of western Canadians correlates with the dominance of corn in the eastern Canadian food-industry. The gradient of sulphur isotope composition in Canadian hair from coast to inland regions correlates with the increasing soil pH and decreasing deposition of marine-derived sulphate aerosols in local food systems. We conclude that part of the isotopic variability found in the hair of Canadian residents reflects the isotopic signature associated with specific environmental conditions and agricultural practices of regional food systems transmitted to humans through the high consumption rate of intra-provincial food in Canada. Our study also underscores the strong potential of sulphur isotopes as tracers of human and food provenance.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada

et al. 2020

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“…Studies have demonstrated the potential of using 87 Sr/ 86 Sr ratios in keratinous tissues to identify local versus non-local signal for humans (Font et al, 2012;Vautour et al, 2015), to identify migration paths and breeding sites for birds (Font et al, 2007), and to reconstruct travel history of horses (Chau et al, 2017). The 87 Sr/ 86 Sr ratios in hair samples may also be used in archeological studies to identify the travel history of buried human remains (Frei et al, 2015(Frei et al, , 2017Lugli et al, 2018). Similarly, the provenance of ancient textiles could be identified using strontium isotope analysis in wool (Frei et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Assessing the Reliability of Mobility Interpretation From a Multi-Isotope Hair Profile on a Traveling Individual

Chartrand

St-Jean

et al. 2020

Front. Ecol. Evol.

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Forensic practitioners, archeologists, and ecologists increasingly use hair isotope profiles and isotope databases and maps to reconstruct the life history of unidentified individuals. Relationships between hair isotope profiles with travel history have been primarily investigated through controlled laboratory experiments. However, those controlled studies do not reflect the complex life history of modern individuals who often travel between multiple locations over different periods. Here, we collect one bundle of hairs from a volunteer whose primary residence is in Ottawa (Canada) but who traveled to multiple destinations over a period of 18 months. Those travels include multi-week trips to distant locations and multi-day trips to more local areas. We use multi-isotope profiles on the individual's hairs coupled with isotope databases across the world to reconstruct travel history at sub-monthly temporal resolution. We compare the isotopic interpretation of mobility with the recorded travel history. A prominent shift in δ 2 H values is interpreted as a westward movement toward central Canada, which corresponds to a month-long road-trip to the Prairie. We observed a marked negative excursion in δ 13 C values along the hairs profile, which was related to a multi-week-long trip to several countries in Europe. Except for an exceptionally variable interval likely driven by health issues, δ 15 N values show very little fluctuation across the entire profile, indicating consumption of consistent amounts of animal or marine-based protein at different locations. The isotopic shifts in the proximal part of the hair reveal a clearer picture of traveling destinations than the shifts in the distal part, which have larger uncertainty in terms of timing and amplitude. Except for the last couple of months before collection, 87 Sr/ 86 Sr ratios show little variation throughout the profile likely due to recent exchange with Ottawa tap water during bathing or showering. The different 87 Sr/ 86 Sr ratios in the month preceding collection appear to partially preserve the 87 Sr/ 86 Sr ratio of the volunteer's diet. This study demonstrates the interest of using multi-isotope systems and large isotopic databases to reconstruct individual mobility. This study also underlines the challenges in linking isotope data to mobility, particularly in rapidly growing keratinous tissues.

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“…Strontium isotopes are widely used by the geochemical community and applied in several different research fields, such as petrology, archaeology, palaeontology, palaeoclimatology, stratigraphy, forensics and food traceability (Kelly et al , Zhou et al , McArthur et al , Kimura et al , Durante et al , Lin et al , Bolea‐Fernandez et al , Willmes et al , Lugli et al , , Weber et al ). However, for the application of radiogenic Sr isotopes to carbonate samples, the availability of suitable microanalytical reference materials (MRMs) for in situ analyses is limited.…”

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confidence: 99%

NanoSr – A New Carbonate Microanalytical Reference Material for In Situ Strontium Isotope Analysis

Weber

Lugli

Hattendorf

et al. 2019

Geostandard Geoanalytic Res

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The in situ measurement of Sr isotopes in carbonates by MC‐ICP‐MS is limited by the availability of suitable microanalytical reference materials (RMs), which match the samples of interest. Whereas several well‐characterised carbonate reference materials for Sr mass fractions > 1000 µg g−1 are available, there is a lack of well‐characterised carbonate microanalytical RMs with lower Sr mass fractions. Here, we present a new synthetic carbonate nanopowder RM with a Sr mass fraction of ca. 500 µg g−1 suitable for microanalytical Sr isotope research (‘NanoSr’). NanoSr was analysed by both solution‐based and in situ techniques. Element mass fractions were determined using EPMA (Ca mass fraction), as well as laser ablation and solution ICP‐MS in different laboratories. The 87Sr/86Sr ratio was determined by well‐established bulk methods for Sr isotope measurements and is 0.70756 ± 0.00003 (2s). The Sr isotope microhomogeneity of the material was determined by LA‐MC‐ICP‐MS, which resulted in 87Sr/86Sr ratios of 0.70753 ± 0.00007 (2s) and 0.70757 ± 0.00006 (2s), respectively, in agreement with the solution data within uncertainties. Thus, this new reference material is well suited to monitor and correct microanalytical Sr isotope measurements of low‐Sr, low‐REE carbonate samples. NanoSr is available from the corresponding author.

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Transhumance pastoralism of Roccapelago (Modena, Italy) early‐modern individuals: Inferences from Sr isotopes of hair strands

Cited by 19 publications

References 63 publications

Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada

Assessing geographic controls of hair isotopic variability in human populations: A case-study in Canada

Assessing the Reliability of Mobility Interpretation From a Multi-Isotope Hair Profile on a Traveling Individual

NanoSr – A New Carbonate Microanalytical Reference Material for In Situ Strontium Isotope Analysis

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