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Den mesolitiska-neolitiska övergången i Irland: Stabil isotopanalys till dietstudier
Umeå University, Faculty of Arts, Department of historical, philosophical and religious studies.
2024 (Swedish)Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesisAlternative title
The Mesolithic-Neolithic Transition in Ireland : Stable Isotope Analysis as A Tool for Dietary Studies (English)
Abstract [en]

This bachelor thesis investigates nitrogen and carbon stable isotopes in Ireland during the Mesolithic and Neolithic. In recent years, the understanding of subsistence strategies in Northwestern Europe has improved and it has shown that the dietary stable isotope data of Neolithic Ireland is an extreme outlier in the region. The aim is to examine the manuring and canopy effect that have often been suggested to be possible contributing factors for this difference. There is no certainty whether this difference is due to diet, land use or any other cause while these effects remain uninvestigated. The effects are studied by comparing dietary isotopes with sources about land use, such as pollen and geochemical data, for four sites: Carrowkeel, Poulnabrone, Knowth and the Mound of Hostages (Duma na nGiall), which together comprise c. 80% of the Neolithic Irish stable isotope record.

The manuring effect is not visible in the current stable isotope, pollen, geochemical, zoological and archaeobotanical record. The canopy effect may be reflected in that same dataset. If the canopy effect is indeed the cause of the difference between Irish and Southern British δ13C values, a detailed comparison between the pollen data close to the origin of the carbon stable isotope samples and the carbon stable isotope samples in another area, such as Southern Britain, may explain the outlier position of Ireland in North-western Europe.

Abstract [sv]

Denna C-uppsats undersöker kväve-och kolisotoper i det neolitiska och mesolitiska Irland. Genom en stor tillväxt av data har det blivit tydligt att de irländska kväve- och kolvärdena är extrema jämfört med resten av britannien. Gödslingseffekten och trädskiktseffekten är två effekter som har misstänkts att orsaka denna skillnad. Syftet är att undersöka dessa effekter genom att leta efter samband mellan markbruk och stabila isotoper. Fyra begravningsplatser har valts ut till detta syfte: Knowth, Carrowkeel, Poulnabrone och Duma na nGiall (Mound of Hostages). 80% av alla stabila kol- och kväveisotopvärden härstammar från dessa begravningsplatser.

Gödslingseffekten gick inte att identifiera i datasamlingen som innehåller stabila isotopvärden, pollen, zoologisk data, arkeobotanisk och geokemisk data. Trädskiktseffekten möjligtvis bekräftas av datasammanställningen. För att kunna förklara den fullständiga skillnaden mellan syd-brittiska och irländska δ13C-värden behövs en studie som även inkluderar detaljerad data av neolitiskt markbruk från Brittiska ön.

Place, publisher, year, edition, pages
2024. , p. 109
Keywords [en]
Mesolithic-Neolithic transition, Ireland, canopy effect, manuring effect
National Category
Archaeology
Identifiers
URN: urn:nbn:se:umu:diva-226542OAI: oai:DiVA.org:umu-226542DiVA, id: diva2:1872568
Subject / course
Archaeology
Educational program
Bachelor Programme in Archeology
Supervisors
Examiners
Available from: 2024-06-18 Created: 2024-06-18 Last updated: 2024-06-18Bibliographically approved

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