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Article

Strontium Isotope Systematics of Tenerife Wines (Canary Islands): Tracing Provenance in Ocean Island Terroir

by
Beverley C. Coldwell
1,*,
Nemesio M. Pérez
1,2,
Maria Cordero Vaca
2,
Matthew J. Pankhurst
1,2,
Pedro A. Hernández
1,2,
Gladys V. Melián Rodriguez
1,2,
Eleazar Padrón
1,2,
María Asensio-Ramos
2,
Sara Ribeiro
3 and
José Francisco Santos
3
1
Instituto Tecnológico y de Energías Renovables (ITER), 38600 Granadilla de Abona, Tenerife, Canary Islands, Spain
2
Instituto Volcanológico de Canarias (INVOLCAN), 38320 San Cristóbal de La Laguna, Tenerife, Canary Islands, Spain
3
Geobiotec, Departamento de Geociências, Universidade de Aveiro, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Beverages 2022, 8(1), 9; https://doi.org/10.3390/beverages8010009
Submission received: 9 December 2021 / Revised: 30 December 2021 / Accepted: 10 January 2022 / Published: 1 February 2022
(This article belongs to the Section Wine, Spirits and Oenological Products)
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Abstract

The production of fraudulent goods remains widespread and economically damaging. The high value of the wine industry makes it particularly vulnerable, and a number of geochemical methods have been developed to ensure traceability and identification of origin. Here, strontium (Sr) isotope data on wines from five defined regions in Tenerife (Canary Islands, Spain) show that the young volcanic geology imparts a clearly identifiable low 87Sr/86Sr signature (<0.7072). These values discriminate Tenerife wines from mainland Spanish and continental European produce, as these are much more radiogenic in general. However, unlike continental wine regions, wines from Tenerife show small but ubiquitous enrichments in 87Sr/86Sr above what is expected in the soils. Bentonite addition has not affected the 87Sr/86Sr signatures, with white wines at lower Sr concentrations than red wines in all regions. A number of natural contributions to the terroir are evaluated in relation to Tenerife’s unique combination of geology and geography. Atmospheric precipitation (rainfall) is likely a dominant influence on Sr isotope systematics in northern Denominación de Origen regions, and evaporation may play a role in buffering signatures in southern regions. Other natural additions of 87Sr are not precluded at a local scale, given the large range in climatic conditions of island terroir and known input of mineral dust from Africa. Despite natural explanations affecting the overall small shift observed, there are clear outliers with considerably higher 87Sr/86Sr and Sr concentration. This confirms the utility of Sr isotope systematics for oceanic-island viticulture and demonstrates the use of young volcanic soils for tracing natural inputs that may be masked in other regions.
Keywords: Sr isotopes; geographic traceability; ocean-island viticulture; geology and wine authentication; wine provenance; oenological database Sr isotopes; geographic traceability; ocean-island viticulture; geology and wine authentication; wine provenance; oenological database

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MDPI and ACS Style

Coldwell, B.C.; Pérez, N.M.; Vaca, M.C.; Pankhurst, M.J.; Hernández, P.A.; Rodriguez, G.V.M.; Padrón, E.; Asensio-Ramos, M.; Ribeiro, S.; Santos, J.F. Strontium Isotope Systematics of Tenerife Wines (Canary Islands): Tracing Provenance in Ocean Island Terroir. Beverages 2022, 8, 9. https://doi.org/10.3390/beverages8010009

AMA Style

Coldwell BC, Pérez NM, Vaca MC, Pankhurst MJ, Hernández PA, Rodriguez GVM, Padrón E, Asensio-Ramos M, Ribeiro S, Santos JF. Strontium Isotope Systematics of Tenerife Wines (Canary Islands): Tracing Provenance in Ocean Island Terroir. Beverages. 2022; 8(1):9. https://doi.org/10.3390/beverages8010009

Chicago/Turabian Style

Coldwell, Beverley C., Nemesio M. Pérez, Maria Cordero Vaca, Matthew J. Pankhurst, Pedro A. Hernández, Gladys V. Melián Rodriguez, Eleazar Padrón, María Asensio-Ramos, Sara Ribeiro, and José Francisco Santos. 2022. "Strontium Isotope Systematics of Tenerife Wines (Canary Islands): Tracing Provenance in Ocean Island Terroir" Beverages 8, no. 1: 9. https://doi.org/10.3390/beverages8010009

APA Style

Coldwell, B. C., Pérez, N. M., Vaca, M. C., Pankhurst, M. J., Hernández, P. A., Rodriguez, G. V. M., Padrón, E., Asensio-Ramos, M., Ribeiro, S., & Santos, J. F. (2022). Strontium Isotope Systematics of Tenerife Wines (Canary Islands): Tracing Provenance in Ocean Island Terroir. Beverages, 8(1), 9. https://doi.org/10.3390/beverages8010009

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