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The stable isotope analyses performed on the sampled sheep teeth were carried out at the Service de Spectrometrie de Masse Isotopique du Museum national Histoire naturelle of Paris, France (SSMIM) with technical assistance by D. Fiorillo and scientific supervision from Dr M. Balasse (both UMR7209/MNHN). We thank M.T. Sebastia and F. de Bello for providing information on pastures. We thank P. Martin-Gomez and the Instituto de Formacion Agroambiental for sharing isotope values in precipitation for Jaca, and J. Rodriguez-Arevalo and M.F. Diaz-Teijeiro for providing isotope data for Zaragoza, collected by the REVIP, which is run by CEDEX in cooperation with the Spanish Meteorological Agency (AEMET). Dr Tornero is a Postdoctoral researcher funded by a Juan de la Cierva-Incorporacion (no: IJCI-2014-19909) grant from the Ministry of Economy and Competitiveness, Spanish Government. This paper was developed within the framework of the 'Los Caminos del Neolitico' (HAR2009-09027) and 'Los Caminos del Neolitico II' (HAR2013-46800 P) projects, both directed by Dr Manuel Rojo-Guerra, granted by the Subdirectorate General for Research Projects/General Directorate of Research and Management of the National Plan for R and D and Innovation/Secretary of State for Research of the Ministry of Science and Innovation of Spain, and co-financed by the Government of Aragon. Equally it is part of the 'La Memoria del Camino: Ciencia y divulgacion de las primeras rutas pecuarias neoliticas en el Pirineo - MEDELCA' (FCT-2015-9947) project funded by the Spanish Foundation for Science and Technology (FECYT). Finally, Ramon and Joaquin Costa, owners of the sheep flocks which provided the specimens analyzed, are acknowledged for their help.

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Pedro Ferrio, Juan - Autor o Coautor
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Vertical sheep mobility along the altitudinal gradient through stable isotope analyses in tooth molar bioapatite, meteoric water and pastures: A reference from the Ebro valley to the Central Pyrenees

Publicado en:Quaternary International. 484 94-106 - 2018-08-10 484(), doi: 10.1016/j.quaint.2016.11.042

Pedro Ferrio, Juan;

Afiliaciones

'Los Caminos del Neolitico II - Financiador
CCHS CSIC, Inst Hist, GI Arqueobiol, C Albasanz 26-28, Madrid 28037, Spain - Autor o Coautor
Centro de Investigación y Tecnología Agroalimentaria de Aragón - Entidad de origen
IPHES, Inst Catala Paleoecol Humana & Evolucio Social, C Marcelli Domingo S-N,Campus Sescelades URV, Tarragona 43007, Spain - Autor o Coautor
Juan de la Cierva-Incorporacion grant from the Ministry of Economy and Competitiveness, Spanish Government - Financiador
Los Caminos del Neolitico - Financiador
Session on Casting a Glance over the Mountain - Multiproxy Approaches to the Understanding of Vertical Mobility at the Meeting of the European-Association-of-Archaeologists (EAA) - Sede
Spanish Foundation for Science and Technology (FECYT) - Financiador
Univ Autonoma Barcelona, Dept Prehist, Lab Arqueozool, Fac Filosofia & Lletres, Edifici B, Barcelona, Spain - Autor o Coautor
Univ Concepcion, Fac Ciencias Nat & Oceanog, Dept Bot, Casilla 160-C, Concepcion, Chile - Autor o Coautor
Univ Lleida, AGROTECNIO Ctr, Dept Prod Vegetal & Ciencia Forestal, Avda Rovira Roure 191, Lleida 25198, Spain - Autor o Coautor
Valladolid Univ, Dept Prehist & Archaeol, Valladolid, Spain - Autor o Coautor
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Resúmen

Resúmen: Although the frequency of pastoral activities involving vertical sheep mobility has decreased over the last century, this is a herding strategy still used in the Ebro basin, where animals move from overwintering valley locations up to the Pyrenees from late spring to early autumn. Such practice allows herders to avoid the worst climatic conditions, seasonally balancing the great contrast between ecological zones in this region, from dry lowland Mediterranean steppe to wet mountain subalpine grasslands. As recent regional archaeological works have suggested, the altitudinal movement of flocks may have begun with the first early Neolithic groups settled in this territory. Here we investigate through stable isotope analyses one of the last flocks that still performs this activity. Sheep specimens were analyzed by sequential analyses (delta C-13 and delta O-18) in bioapatite of tooth enamel, allowing detection of seasonal changes. Tooth series are interpreted according to rainfall distribution, seasonal patterns in delta O-18 of meteoric water, vegetation changes and delta C-13 values in pastures along the altitudinal gradient in the area. Vertical movements in sheep sequential series are recognized by an inverse relationship between delta C-13 and delta O-18 values. Monthly delta O-18 values in meteoric water obtained in valley and mountain locations describe the same type of seasonal oscillation, with high values during the warm months and low values during the cold months. Pastures analyzed along the altitudinal gradient showed a decrease in delta C-13 values with altitude, linked to the seasonal availability of precipitation and vegetation differences among locations. These results define a new analytical and conceptual framework for the interpretation of archaeological samples in this region. (C) 2016 Elsevier Ltd and INQUA. All rights reserved.

Palabras clave: Altitudinal mobility; Bioapatite; Bone phosphate; C-13/c-12 ratios; Carbon; Delta-c-13; Ebro basin; Oxygen isotopes; Pinus-halepensis; Plants; Precipitation; Pyrenees; South-africa; Spain; Stable oxygen and carbon isotopes

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