The late Holocene introduction of Juglans regia (walnut) to Cyprus

Pound, Matthew, Hazell, Calian and Hocking, Emma (2023) The late Holocene introduction of Juglans regia (walnut) to Cyprus. Vegetation History and Archaeobotany, 32 (2). pp. 125-131. ISSN 0939-6314

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The island of Cyprus has a long history of human impacts, including the introduction of more than 250 plant species. One of these introduced species is Juglans regia (walnut), which is considered a naturalised non-native (introduced in last 500 years). Here we report the earliest occurrence of Juglans regia pollen grains from a sedimentary deposit on Cyprus. The pollen recovered from the Akrotiri Marsh provides an earliest introduction date of 3,100-3,000 cal yr BP. This Bronze Age occurrence of Juglans regia is sporadic. However, by 2,000 cal yr BP the pollen signal becomes more persistent and indicates that introduction or expansion of Juglans regia was highly likely in the Roman period. We integrate our new results with younger pollen occurrences of Juglans regia on Cyprus, the archaeobotanical record and documentary evidence to provide an overview of this archaeophyte. Our findings show that, following the conventions of the Flora of Cyprus, Juglans regia should be reclassified from naturalised non-native to indigenous.

Item Type: Article
Additional Information: Funding information: We are immensely grateful to Chris Hadjigeorgiou of the Geological Survey Department, Cyprus, Pantelis Charilaou of the Sovereign Base Area Administration Environmental Department, Thomas Hadjikyriakou of the Akrotiri Environmental Education and Information Centre, the Ministry of Defence and Defence Infrastructure Organisation for enabling us to undertake fieldwork and take samples. The fieldwork was kindly supported by a grant from the Council for British Research in the Levant and CJH thanks Northumbria University for funding his PhD studies. Lesley Dunlop, Dave Thomas and Will Thomas are thanked for their kind assistance in the lab. Ralf Hand and Charalambos Christodoulou are gratefully thanked for providing GIS layer files of the phytogeography of Cyprus. We thank T. Litt (editor) and an anonymous reviewer for their insightful comments that greatly improved this manuscript.
Uncontrolled Keywords: Eastern Mediterranean, Introduced species, Palynology, Roman, Bronze age, Arboriculture
Subjects: C200 Botany
F800 Physical and Terrestrial Geographical and Environmental Sciences
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Depositing User: Elena Carlaw
Date Deposited: 18 Aug 2022 15:24
Last Modified: 05 Apr 2023 14:30

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