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James H. Barrett

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James H. Barrett

Professor of Medieval and Environmental Archaeology
Department of Archaeology and Cultural History
NTNU University Museum

james.barrett@ntnu.no
Gunnerushuset, Kalvskinnet
ResearchGate Google Scholar
About Publications Teaching Outreach

About

CV

I study ecological globalisation. My background is in medieval, historical and environmental archaeology, with special interests in the trade of fish, furs and ivory. I am particularly drawn to the complex links between rural and Indigenous producers of the north and (often distant) urban consumers, and their implications. Thus I am also interested in the construction of local (including island) identities and the social, economic and ecological consequences of resource depletion and/or sustainability.

In methodological terms, most of my research has involved the combination of archaeological science, medieval/historical archaeology and history, with the ultimate aim of reconciling archaeology's divergent scientific and humanistic traditions. I started academic life as a zooarchaeologist, but have since been directly or indirectly involved in applying a diverse range of techniques and am better described as a historical ecologist. As a proponent of the holistic study of historical ecology, I am equally interested in the study of ecofacts (bones, plant remains, soils, etc.) and artefacts. Much of my research relates to the study of marine resources, but I am interested in the interface of nature and culture on land and sea.

I am presently one of four Principal Investigators of the ERC Synergy Project 4-OCEANS, a 10 million Euro initiative exploring global historical ecology through meta-analysis and primary scientific analysis of ten marine taxa (key examples being walrus, bowhead whale and cod). I also coordinate a long-term project, the Northern Seas Synthesis, to harvest the power of archaeological fish bone records for archaeology, environmental history and conservation biology. Examples of other collaborative projects include the Demise of the Atlantic Grey Whale (as supervisor of Youri van den Hurk's Marie Skłodowska-Curie Individual Fellowship at NTNU), the SeaChanges Innovative Training Network (led by the University of York), FoodImpact (led by the University of Oslo with funding from the Research Council of Norway) and the Glacial Archaeology Program which is rescuing the archaeology of reindeer hunting sites melting out of ice patches in Jotunheimen (led by Oppland County Council).

I have previously worked at the University of Toronto (1996-1998), the University of York (1999-2007) and the University of Cambridge (2007-2021). At the latter, I remain a Senior Research Fellow of the McDonald Institute for Archaeological research. I moved to a professorship at Trondheim in July 2021, to join a university fully committed to sustainability and oceans (two of NTNU's four strategic research areas), and to realise a lifelong goal of living among forests, mountains and fjords.

Publications

  • Chronological
  • By category
  • See all publications in Cristin

2025

  • Barrett, James Harold; Eivindsen, Tove; Pawel, Daniela; Rønning, Marte Iversen; Bakken, Torkild; Hårsaker, Karstein. (2025) Sea Ivories. Havets elfenbein
    Museum exhibition
  • Grav, Ellen J. ; Barrett, James Harold; McLees, Christopher; Ekroll, Øystein; Kit, Kovacs; Lydersen, Christian. (2025) Havets elfenbein/Sea Ivories. NTNU Vitenskapsmuseet
    Exhibition catalogue
  • Barrett, James Harold. (2025) Havets elfenbein - En introduksjon. Spor
    Popular scientific article

2024

  • Martinez Garcia, Lourdes; Cuevas, Angelica; Ferrari, Giada; Hufthammer, Anne Karin; Vedeler, Marianne; Hirons, Alex. (2024) Tracing 600 years of long-distance Atlantic cod trade in medieval and post-medieval Oslo using stable isotopes and ancient DNA. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Atmore, Lane; van der Jagt, Inge; Boilard, Aurélie; Häberle, Simone; Blevis, Rachel; Dierickx, Katrien Alfred C. (2024) The Once and Future Fish: Assessing a Millennium of Atlantic Herring Exploitation Through Mixed-Stock Analysis and Ancient DNA. Global Change Biology
    Academic article
  • Buss, Danielle Lia; Dierickx, Katrien; Falahati-Anbaran, Mohsen; Elliot, Deirdre; Rankin, Lisa K.; Whitridge, Peter. (2024) Archaeological evidence of resource utilisation of walrus, Odobenus rosmarus, over the past two millennia: A systematic review protocol. Open Research Europe
    Academic article
  • Furness, Lydia Hildebrand; Kersten, Oliver Sven; Boilard, Aurélie; Keith-Diagne, Lucy; Brito, Cristina; Barrett, James Harold. (2024) Population structure of Dugong dugon across the Indo-Pacific revealed by historical mitogenomes. Royal Society Open Science
    Academic article

2023

  • Buss, Danielle Lia; van den Hurk, Youri; Falahati-Anbaran, Mohsen; Elliott, Deirdre; Evans, Sally; Frasier, Brenna A.. (2023) Archaeological evidence of resource utilisation of the great whales over the past two millennia: A systematic review protocol. PLOS ONE
    Academic literature review
  • van den Hurk, Youri; Sikström, Fanny; Amkreutz, Luc; Bleasdale, Madeleine; Borvon, Aurélia; Ephrem, Brice. (2023) The prelude to industrial whaling: Identifying the targets of ancient European whaling using zooarchaeology and collagen mass-peptide fingerprinting. Royal Society Open Science
    Academic article
  • Ruiz-Puerta, Emily J.; Keighley, Xénia; Desjardins, Sean P. A.; Gotfredsen, Anne Birgitte; Pan, Shyong En; Star, Bastiaan. (2023) Holocene deglaciation drove rapid genetic diversification of Atlantic walrus. Proceedings of the Royal Society of London. Biological Sciences
    Academic article

2022

  • Atmore, Lane Margaret; Ferrari, Giada; Martinez Garcia, Lourdes; van der Jagt, Inge; Blevis, Rachel; Granado, José. (2022) Ancient DNA sequence quality is independent of fish bone weight. Journal of Archaeological Science
    Academic article
  • Pilø, Lars; Reitmaier, Thomas; Fischer, Andrea; Barrett, James; Nesje, Atle. (2022) Ötzi, 30 years on: A reappraisal of the depositional and post-depositional history of the find. The Holocene
    Academic article
  • Holm, Poul; Barrett, James; Brito, Cristina; Ludlow, Francis. (2022) New challenges for the Human Oceans Past agenda. Open Research Europe
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Cuevas, Angelica; Atmore, Lane Margaret; López-Arias, Begoña; Culling, Mark. (2022) Ancient DNA evidence for the ecological globalization of cod fishing in medieval and post-medieval Europe. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Atmore, Lane Margaret; Martinez Garcia, Lourdes; Makowiecki, Daniel; André, Carl; Lõugas, Lembi; Barrett, James. (2022) Population dynamics of Baltic herring since the Viking Age revealed by ancient DNA and genomics. Proceedings of the National Academy of Sciences of the United States of America (PNAS)
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Hufthammer, Anne Karin; Jakobsen, Kjetill Sigurd; Jentoft, Sissel; Barrett, James Harold. (2022) Ancient DNA reveals a southern presence of the Northeast Arctic cod during the Holocene. Biology Letters
    Academic article
  • Barrett, James; Khamaiko, Natalia; Ferrari, Giada; Cuevas, Angelica; Kneale, Catherine; Hufthammer, Anne Karin. (2022) Walruses on the Dnieper: new evidence for the intercontinental trade of Greenlandic ivory in the Middle Ages. Proceedings of the Royal Society of London. Biological Sciences
    Academic article

2021

  • Ferrari, Giada; Atmore, Lane Margaret; Jentoft, Sissel; Jakobsen, Kjetill Sigurd; Makowiecki, Daniel; Barrett, James. (2021) An accurate assignment test for extremely low-coverage whole-genome sequence data. Molecular Ecology Resources
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Oosting, Tom; Ballantyne, Rachel; van der Jagt, Inge; Ystgaard, Ingrid. (2021) Historical demographic processes dominate genetic variation in ancient Atlantic cod mitogenomes. Frontiers in Ecology and Evolution
    Academic article
  • Barrett, James. (2021) The exploitation of walrus ivory in medieval Europe. Academic Press
    Academic chapter/article/Conference paper
  • Pilø, Lars; Finstad, Espen; Wammer, Elling Utvik; Post-Melbye, Julian Robert; Rømer, Axel Hee; Andersen, Øystein Rønning. (2021) On a Mountain High: Finding and Documenting Glacial Archaeological Sites During the Anthropocene. Journal of Field Archaeology
    Academic article
  • Barrett, James. (2021) A radiocarbon revolution sheds light on the Vikings. Nature
    Short communication
  • Ferrari, Giada; Cuevas, Angelica; Wyrozemska, Agata Teresa; Ballantyne, Rachel; Kersten, Oliver; Palsdottir, Albina Hulda. (2021) The preservation of ancient DNA in archaeological fish bone. Journal of Archaeological Science
    Academic article

2020

  • Barrett, James; Boessenkool, Sanne; Kneale, Catherine; O'Connell, Tamsin C; Star, Bastiaan. (2020) Ecological globalisation, serial depletion and the medieval trade of walrus rostra. Quaternary Science Reviews
    Academic article
  • Pilø, Lars Holger; Barrett, James; Eiken, Trond; Finstad, Espen; Grønning, Sunniva; Martinsen, Julian Robert Post. (2020) Interpreting archaeological site-formation processes at a mountain ice patch: A case study from Langfonne, Norway. The Holocene
    Academic article
  • Pilø, Lars Holger; Finstad, Espen; Barrett, James. (2020) Crossing the ice: an Iron Age to medieval mountain pass at Lendbreen, Norway. Antiquity
    Academic article

Journal publications

  • Barrett, James Harold. (2025) Havets elfenbein - En introduksjon. Spor
    Popular scientific article
  • Martinez Garcia, Lourdes; Cuevas, Angelica; Ferrari, Giada; Hufthammer, Anne Karin; Vedeler, Marianne; Hirons, Alex. (2024) Tracing 600 years of long-distance Atlantic cod trade in medieval and post-medieval Oslo using stable isotopes and ancient DNA. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Atmore, Lane; van der Jagt, Inge; Boilard, Aurélie; Häberle, Simone; Blevis, Rachel; Dierickx, Katrien Alfred C. (2024) The Once and Future Fish: Assessing a Millennium of Atlantic Herring Exploitation Through Mixed-Stock Analysis and Ancient DNA. Global Change Biology
    Academic article
  • Buss, Danielle Lia; Dierickx, Katrien; Falahati-Anbaran, Mohsen; Elliot, Deirdre; Rankin, Lisa K.; Whitridge, Peter. (2024) Archaeological evidence of resource utilisation of walrus, Odobenus rosmarus, over the past two millennia: A systematic review protocol. Open Research Europe
    Academic article
  • Furness, Lydia Hildebrand; Kersten, Oliver Sven; Boilard, Aurélie; Keith-Diagne, Lucy; Brito, Cristina; Barrett, James Harold. (2024) Population structure of Dugong dugon across the Indo-Pacific revealed by historical mitogenomes. Royal Society Open Science
    Academic article
  • Buss, Danielle Lia; van den Hurk, Youri; Falahati-Anbaran, Mohsen; Elliott, Deirdre; Evans, Sally; Frasier, Brenna A.. (2023) Archaeological evidence of resource utilisation of the great whales over the past two millennia: A systematic review protocol. PLOS ONE
    Academic literature review
  • van den Hurk, Youri; Sikström, Fanny; Amkreutz, Luc; Bleasdale, Madeleine; Borvon, Aurélia; Ephrem, Brice. (2023) The prelude to industrial whaling: Identifying the targets of ancient European whaling using zooarchaeology and collagen mass-peptide fingerprinting. Royal Society Open Science
    Academic article
  • Ruiz-Puerta, Emily J.; Keighley, Xénia; Desjardins, Sean P. A.; Gotfredsen, Anne Birgitte; Pan, Shyong En; Star, Bastiaan. (2023) Holocene deglaciation drove rapid genetic diversification of Atlantic walrus. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Atmore, Lane Margaret; Ferrari, Giada; Martinez Garcia, Lourdes; van der Jagt, Inge; Blevis, Rachel; Granado, José. (2022) Ancient DNA sequence quality is independent of fish bone weight. Journal of Archaeological Science
    Academic article
  • Pilø, Lars; Reitmaier, Thomas; Fischer, Andrea; Barrett, James; Nesje, Atle. (2022) Ötzi, 30 years on: A reappraisal of the depositional and post-depositional history of the find. The Holocene
    Academic article
  • Holm, Poul; Barrett, James; Brito, Cristina; Ludlow, Francis. (2022) New challenges for the Human Oceans Past agenda. Open Research Europe
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Cuevas, Angelica; Atmore, Lane Margaret; López-Arias, Begoña; Culling, Mark. (2022) Ancient DNA evidence for the ecological globalization of cod fishing in medieval and post-medieval Europe. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Atmore, Lane Margaret; Martinez Garcia, Lourdes; Makowiecki, Daniel; André, Carl; Lõugas, Lembi; Barrett, James. (2022) Population dynamics of Baltic herring since the Viking Age revealed by ancient DNA and genomics. Proceedings of the National Academy of Sciences of the United States of America (PNAS)
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Hufthammer, Anne Karin; Jakobsen, Kjetill Sigurd; Jentoft, Sissel; Barrett, James Harold. (2022) Ancient DNA reveals a southern presence of the Northeast Arctic cod during the Holocene. Biology Letters
    Academic article
  • Barrett, James; Khamaiko, Natalia; Ferrari, Giada; Cuevas, Angelica; Kneale, Catherine; Hufthammer, Anne Karin. (2022) Walruses on the Dnieper: new evidence for the intercontinental trade of Greenlandic ivory in the Middle Ages. Proceedings of the Royal Society of London. Biological Sciences
    Academic article
  • Ferrari, Giada; Atmore, Lane Margaret; Jentoft, Sissel; Jakobsen, Kjetill Sigurd; Makowiecki, Daniel; Barrett, James. (2021) An accurate assignment test for extremely low-coverage whole-genome sequence data. Molecular Ecology Resources
    Academic article
  • Martinez Garcia, Lourdes; Ferrari, Giada; Oosting, Tom; Ballantyne, Rachel; van der Jagt, Inge; Ystgaard, Ingrid. (2021) Historical demographic processes dominate genetic variation in ancient Atlantic cod mitogenomes. Frontiers in Ecology and Evolution
    Academic article
  • Pilø, Lars; Finstad, Espen; Wammer, Elling Utvik; Post-Melbye, Julian Robert; Rømer, Axel Hee; Andersen, Øystein Rønning. (2021) On a Mountain High: Finding and Documenting Glacial Archaeological Sites During the Anthropocene. Journal of Field Archaeology
    Academic article
  • Barrett, James. (2021) A radiocarbon revolution sheds light on the Vikings. Nature
    Short communication
  • Ferrari, Giada; Cuevas, Angelica; Wyrozemska, Agata Teresa; Ballantyne, Rachel; Kersten, Oliver; Palsdottir, Albina Hulda. (2021) The preservation of ancient DNA in archaeological fish bone. Journal of Archaeological Science
    Academic article
  • Barrett, James; Boessenkool, Sanne; Kneale, Catherine; O'Connell, Tamsin C; Star, Bastiaan. (2020) Ecological globalisation, serial depletion and the medieval trade of walrus rostra. Quaternary Science Reviews
    Academic article
  • Pilø, Lars Holger; Barrett, James; Eiken, Trond; Finstad, Espen; Grønning, Sunniva; Martinsen, Julian Robert Post. (2020) Interpreting archaeological site-formation processes at a mountain ice patch: A case study from Langfonne, Norway. The Holocene
    Academic article
  • Pilø, Lars Holger; Finstad, Espen; Barrett, James. (2020) Crossing the ice: an Iron Age to medieval mountain pass at Lendbreen, Norway. Antiquity
    Academic article

Books

  • Grav, Ellen J. ; Barrett, James Harold; McLees, Christopher; Ekroll, Øystein; Kit, Kovacs; Lydersen, Christian. (2025) Havets elfenbein/Sea Ivories. NTNU Vitenskapsmuseet
    Exhibition catalogue

Part of book/report

  • Barrett, James. (2021) The exploitation of walrus ivory in medieval Europe. Academic Press
    Academic chapter/article/Conference paper

UTSTILLING

  • Barrett, James Harold; Eivindsen, Tove; Pawel, Daniela; Rønning, Marte Iversen; Bakken, Torkild; Hårsaker, Karstein. (2025) Sea Ivories. Havets elfenbein
    Museum exhibition

Teaching

Courses

  • ARK1002 - Cultural History and Material Culture

Outreach

Podcast: Gone Medieval: The Norse Walrus Ivory Trade Crash

Greenland’s Viking settlements were established in the tenth century. But by the fifteenth century, they had all but vanished, their fate confounding generations of archaeologists. Was trade in walrus ivory behind both their prosperity and decline?

2025

  • Academic lecture
    Royle, Thomas Coulton; Buss, Danielle; Falahati-Anbaran, Mohsen; Boethius, Adam; Dütting, Monica K.; Enehaug, Monica Nordanger. (2025) Casting a Wide Net: Documenting Spatiotemporal Variation in the Species Composition of Northeastern North American and Northern European Fisheries through the Meta-Analysis of Zooarchaeological Datasets. International Council for Archaeozoology–Fish Remains Working Group 22nd Meeting of the International Council for Archaeozoology–Fish Remains Working Group , Toronto, Ontario, Canada 2025-08-12 - 2025-08-17

2022

  • Academic lecture
    van den Hurk, Youri; Collins, Matthew J; Nadeau, Marie-Josee; Barrett, James Harold. (2022) The Demise of the Atlantic Grey Whale. Oceans Past Initiative Oceans Past IX , Seattle 2022-05-22 - 2022-05-25
  • Academic lecture
    Holm, Poul; Barrett, James Harold; Brito, Cristina; Ludlow, Francis. (2022) 4-OCEANS: a global, collaborative project. Oceans Past Initiative Oceans Past IX , Seattle 2022-05-22 - 2022-05-25
  • Poster
    Buss, Danielle; Falahati-Anbaran, Mohsen; Ballantyne, Rachel; Boethius, Adam; Dütting, Monica K.; Bødker Enghoff, Inge. (2022) Using the Northern Seas Synthesis database to infer spatiotemporal changes in commercially important fish taxa over the past two millennia. British Ecological Society British Ecological Society 2022 conference , Edinburgh 2022-12-18 - 2022-12-22
  • Academic lecture
    Barrett, James Harold. (2022) Ecological Globalization and the Medieval Trade of Walrus Ivory. Harvard University Harvard Medieval History Graduate Workshop , Cambridge, Massachusetts 2022-05-24 - 2022-05-24
  • Academic lecture
    Barrett, James Harold. (2022) Sea Ivories: Tracking Global Networks of the Viking Age and Medieval North. University of York Guest lecture, Viking Studies Research Group , York 2022-11-04 - 2022-11-04
  • Academic lecture
    Barrett, James Harold. (2022) The Medieval Walrus Ivory Trade as Ecological Globalisation. Leeds International Medieval Congress Leeds International Medieval Congress , Leeds 2022-07-04 - 2022-07-07
  • Academic lecture
    Barrett, James Harold. (2022) Ecological Globalization and the Medieval Trade of Walrus Ivory. UrbNet: Centre for Urban Network Evolutions Guest Lecture, UrbNet: Centre for Urban Network Evolutions , Aarhus 2022-10-11 - 2022-10-11
  • Academic lecture
    Barrett, James Harold; Star, Bastiaan; Buss, Danielle; Falahati-Anbaran, Mohsen; Larsen, Thomas; Nadeau, Marie-Josee. (2022) Multi-proxy Approaches to the Historical Ecology of Marine Resource Exploitation c.100 BCE to 1860 CE. Oceans Past Initiative Oceans Past IX , Seattle 2022-05-22 - 2022-05-25
  • Interview
    Barrett, James Harold; Jarman, Catrine. (2022) The Norse Walrus Ivory Trade Crash Gone Medieval Podcast. https://shows.acast.com/gone-medieval/episodes/walrus-ivory https://shows.acast.com/gone-medieval/episodes/walrus-ivory [Internet] 2022-07-27
  • Interview
    Barrett, James Harold; Curry, Andrew. (2022) Vikings shipped walrus ivory from Greenland to Kyiv, ancient skulls show. Science Science [Journal] 2022-04-22
  • Interview
    Barrett, James Harold; Pennisi, Elizabeth. (2022) Loss of Viking-era herring may be a warning to today’s fishers. Science Science [Journal] 2022-11-02

2021

  • Academic lecture
    Barrett, James Harold; Brito, Cristina; Ludlow, Francis; Star, Bastiaan; Holm, Poul. (2021) A History of the World in 10 Marine Taxa? An Introduction to 4-OCEANS. University of Groningen ICAZ 3rd Marine Mammal Research Group Meeting , Groningen 2021-09-02 - 2021-09-03

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