Guiry Publications
2025
Guiry E., Kennedy R., Stricker L., Lavin L., Szpak P. 2025. What it means to be marine: sulfur-isotope variability in the historical Chesapeake Bay ecosystem. Journal of Archaeological Science 179: 106265. DOI: 10.1016/j.jas.2025.106265.
Guiry E., Beglane F., Orton D., Carlin N., Teeter M., Szpak P. Accepted. Pigs, pannage, and the solstice: isotopic insights from prehistoric feasting at Newgrange. Proceedings of the Prehistoric Society. DOI forthcoming.
Guiry E., Beglane F., McCormick F., Tourigny E., Richards M. 2025. Pigs, people, and proximity: a 6000-year isotopic record of pig management in Ireland. Royal Society Open Science 11: 241300. DOI: 10.1098/rsos.241300.
Welker M., Bratten J., Guiry E. 2025. Feline conquistadors: the arrival of the domestic cat in the New World. American Antiquity. DOI: 10.1017/aaq.2024.84.
Ferrandin S., Plunkett G., Britton K., Guiry E., Beglane F. 2025. Dual role of human activities and climate in pre-industrial nitrogen shifts in Ireland. Journal of Archaeological Science 180: 106271. DOI: 10.1016/j.jas.2025.106271.
McLaughlin R., Robson H.K., Maring R., Boethius A., Guiry E., et al. 2025. Marine exploitation and the arrival of farming: resolving the paradox of the Mesolithic鈥揘eolithic transition in Denmark. Quaternary Science Reviews 361: 109447. DOI: 10.1016/j.quascirev.2025.109447
2024
Guiry E., Robson H. 2024. Deep antiquity of seagrasses supporting European eel fisheries in the western Baltic. Proceedings of the Royal Society B 291: 20240674. DOI: 10.1098/rspb.2024.0674.
Guiry E., Kennedy R., Malcolm C., Miller M., Hall O., Buckley M., Szpak P. 2024. Early evidence for long-term human impacts on sea-turtle foraging behaviour. Royal Society Open Science 11: 240120. DOI: 10.1098/rsos.240120.
Guiry E., Kennedy R., Orton D., Armitage P., Bratten J., Dagneau C., et al. 2024. The ratting of North America: a 350-year retrospective on Rattus species compositions and competition. Science Advances 10 (14): eadm6755. DOI: 10.1126/sciadv.adm6755.
Royle T., Kennedy E., Guiry E., Jackman L., Shichizae Y., Yang D. 2024. Sharkaeology: building catch records for historical Chinese diaspora shark fisheries in Monterey Bay, California, through ancient DNA analysis of archaeological Chondrichthyes remains. Human Ecology. DOI: 10.1007/s10745-024-00521-5.
van Helden D., Levine D., Guiry E., Darko N., King C., et al. 2024. Seven recommendations for scientists, universities, and funders to embrace interdisciplinarity. EMBO Reports. DOI: 10.1038/s44319-024-00173-y.
2023
Guiry E., Beglane F., Szpak P., McCormick F., Teeter M., et al. 2023. A 6000-year isotopic perspective on changing human鈥揷attle relationships in Ireland. Antiquity 97 (396): 1436-1452. DOI: 10.15184/aqy.2023.163.
Guiry E., Dupont-H茅bert C., Grimes V. 2023. Reassessing the abandonment of pig husbandry in Post-Viking Iceland: an isotopic approach. In Beasley M., Somerville A. (eds.), Exploring Human Behaviour Through Isotope Analysis: Applications in Archaeological Research (pp. 207-224). Springer, New York. DOI: 10.1007/978-3-031-32268-6_9.
Orchard T., Needs-Howarth S., Hawkins A., Lesage L., Guiry E., Royle T. 2023. Considering passenger pigeon abundance and distribution in the Late Woodland zooarchaeological record of southern Ontario, Canada. International Journal of Osteoarchaeology 33: 608-618. DOI: 10.1002/oa.3163.
2022
Guiry E., James M., Cheung C., Royle T. 2022. Four millennia of long-term individual foraging-site fidelity in a highly migratory marine predator. Communications Biology 5: 368. DOI: 10.1038/s42003-022-03310-2.
Guiry E., Orchard T., Needs-Howarth S., Szpak P. 2022. Freshwater wetland-driven variation in sulfur-isotope compositions: implications for human palaeodiet and ecological research. Frontiers in Ecology and Evolution 10: 953042. DOI: 10.3389/fevo.2022.953042.
Kennedy R.J., Guiry E. 2022. Exploring railroad impacts on the meat trade: an isotopic investigation of meat sourcing and animal husbandry at Chinese diaspora sites in the American West. International Journal of Historical Archaeology 27: 393-423. DOI: 10.1007/s10761-022-00663-6.
Royle T.C.A., Guiry E., Zhang H., Clark L.T., Missal S.M., et al. 2022. Documenting the short-tailed albatross (Phoebastria albatrus) clades historically present in British Columbia, Canada, through ancient DNA analysis of archaeological specimens. Ecology and Evolution 12: e9116. DOI: 10.1002/ece3.9116.
Losey R.J., Nomokonova T., Guiry E., Fleming L.S., Garvie-Lok S.J., et al. 2022. The evolution of dog diet and foraging: insights from archaeological canids in Siberia. Science Advances 8: eabo6493. DOI: 10.1126/sciadv.abo6493.
2021
Guiry E., Kennedy J.R., O鈥機onnell M.T., Gray R., Grant C., Szpak P. 2021. Early evidence for historical overfishing in the Gulf of Mexico. Science Advances 7: eabh2525. DOI: 10.1126/sciadv.abh2525.
Guiry E., Szpak P. 2021. Improved quality-control criteria for stable-carbon and nitrogen-isotope measurements of ancient bone collagen. Journal of Archaeological Science 132: 105416. DOI: 10.1016/j.jas.2021.105416.
Guiry E., No毛l S., Fowler J. 2021. Archaeological herbivore 未鹿鲁C and 未鲁鈦碨 provide a marker for salt-marsh use and new insights into the process of 鹿鈦礜 enrichment in coastal plants. Journal of Archaeological Science 125: 105295. DOI: 10.1016/j.jas.2020.105295.
Guiry E., Orchard T.J., Needs-Howarth S., Szpak P. 2021. Isotopic evidence for garden hunting and resource depression in the Late Woodland of northeastern North America. American Antiquity 86 (1): 90-110. DOI: 10.1017/aaq.2020.86.
2020
Guiry E., Szpak P. 2020. Quality-control for modern bone-collagen stable-carbon and nitrogen-isotope measurements. Methods in Ecology and Evolution 11 (9): 1049-1060. DOI: 10.1111/2041-210X.13433.
Guiry E., Buckley M., Orchard T., Hawkins A., Needs-Howarth S., et al. 2020. Deforestation caused abrupt shift in Great Lakes ecosystem. Limnology and Oceanography 65 (8): 1921-1935. DOI: 10.1002/lno.11428.
Guiry E., Royle T., Matson R.G., Ward H., Weir T., et al. 2020. Differentiating salmonid migratory ecotypes through stable-isotope analysis of collagen: archaeological and ecological applications. PLOS ONE 15 (4): e0232180. DOI: 10.1371/journal.pone.0232180.
Guiry E., Orchard T.J., Royle T., Cheung C.C., Yang D.Y. 2020. Dietary plasticity and the extinction of the passenger pigeon (Ectopistes migratorius). Quaternary Science Reviews 233: 106225. DOI: 10.1016/j.quascirev.2020.106225.
Guiry E., Hunt B.P.V. 2020. Integrating fish-scale and bone isotopic compositions for deep-time retrospective studies. Marine Environmental Research 160: 104982. DOI: 10.1016/j.marenvres.2020.104982.
Guiry E., Szpak P. 2020. Seaweed-eating sheep show that 未鲁鈦碨 evidence for marine diets can be fully masked by sea-spray effects. Rapid Communications in Mass Spectrometry 34: e8868. DOI: 10.1002/rcm.8868.
Guiry E., Orchard T.J., Needs-Howarth S., Royle T., Yang D.Y., Szpak P. 2020. Evidence for freshwater residency among Lake Ontario Atlantic salmon (Salmo salar) spawning in New York. Journal of Great Lakes Research 46: 1036-1046. DOI: 10.1016/j.jglr.2020.05.009.
Losey R., Guiry E., Nomokonova T., Gusev A., Szpak P. 2020. Storing fish? A dog鈥檚 isotopic biography provides insight into Iron Age food-preservation strategies in the Russian Arctic. Archaeological and Anthropological Sciences 12: 1-12. DOI: 10.1007/s12520-020-01166-3.
Britton K., Guiry E. 2020. Isotope bioarchaeology in historical archaeology. In Zarankin A. (ed.), The Routledge Handbook of Global Historical Archaeology (pp. 423-442). Routledge. DOI: 10.4324/9781315202846.
Royle T., Zhang H., Guiry E., Orchard T.J., Needs-Howarth S., Yang D.Y. 2020. Investigating the sex-selectivity of a Middle Ontario Iroquoian Atlantic salmon (Salmo salar) and lake-trout (Salvelinus namaycush) fishery through ancient DNA analysis. Journal of Archaeological Science: Reports 31: 102301. DOI: 10.1016/j.jasrep.2020.102301.
Hillis D., McKechnie I., Guiry E., St Claire D.E., Darimont C.Y. 2020. Ancient dog foods on the Pacific Northwest Coast: zooarchaeological and stable-isotope modelling evidence from Tseshaht territory and beyond. Scientific Reports 10: 15630. DOI: 10.1038/s41598-020-71574-x.
McKenzie C., Murphy E.M., Guiry E., Donnelly C.J., Beglane F. 2020. Diet in medieval Gaelic Ireland: a multiproxy study of the human remains from Ballyhanna, Co. Donegal. Journal of Archaeological Science 121: 105203. DOI: 10.1016/j.jas.2020.105203.
Harris A., Grimes V., Alexander M., Eriksson G., Elliott D., Guiry E., et al. 2020. Diversity in Labrador Inuit sled-dog diets: insights from 未鹿鲁C and 未鹿鈦礜 analysis of dog bone and dentine collagen. Journal of Archaeological Science: Reports 32: 102424. DOI: 10.1016/j.jasrep.2020.102424.
2019
Guiry E. 2019. Complexities of stable-isotope biogeochemistry in ancient freshwater ecosystems: implications for the study of past subsistence and environmental change. Frontiers in Ecology and Evolution 7: 313. DOI: 10.3389/fevo.2019.00313.
Hawkins A.H., Needs-Howarth S., Orchard T., Guiry E. 2019. Beyond the local fishing hole: a preliminary study of pan-regional fishing in southern Ontario (ca. 1000 CE to 1750 CE). Journal of Archaeological Science: Reports 24: 856-868. DOI: 10.1016/j.jasrep.2019.03.007.
2018
Guiry E., Buckley M. 2018. Urban rats have less-variable, higher-protein diets. Proceedings of the Royal Society B 285: 20181441. DOI: 10.1098/rspb.2018.1441.
Guiry E., Beglane F., Szpak P., Schulting R., McCormick F., Richards M.P. 2018. Anthropogenic changes to the Holocene nitrogen cycle in Ireland. Science Advances 4: eaas9383. DOI: 10.1126/sciadv.aas9383.
Guiry E., Jones B.M., deFrance S., Bruseth J.E., Durst J., Richards M.P. 2018. Animal husbandry and colonial adaptive behaviour: isotopic insights from the La Belle shipwreck fauna. Historical Archaeology 52: 684-699. DOI: 10.1007/s41636-018-0142-7.
2017
Guiry E., Szpak P., Richards M.P. 2017. Isotopic analyses reveal geographical and socioeconomic patterns in historical domestic-animal trade between wheat- and maize-agricultural regions in eastern North America. American Antiquity 82: 341-352. DOI: 10.1017/aaq.2016.34.
Guiry E., Karavani膰 I., 艩o拧i膰 Klind啪i膰 R., Talamo S., Radovi膰 S., Richards M.P. 2017. Radiocarbon dates and isotope palaeodietary studies of humans from the Neolithic site of Zemunica, Dalmatia, Croatia. European Journal of Archaeology 20: 235-246. DOI: 10.1017/eaa.2016.24.
2016
Guiry E., Needs-Howarth S., Friedland K.F., Hawkins A., Szpak P., et al. 2016. Lake Ontario salmon (Salmo salar) were not migratory: a long-standing historical debate solved through stable-isotope analysis. Scientific Reports 6: 36249. DOI: 10.1038/srep36249.
Guiry E., Hillier M., Boaventura R., Silva A.M., Oosterbeek L., Tom茅 T., Valera A., Cardoso J.L., Hepburn J.C., Richards M.P. 2016. The transition to agriculture in south-western Europe: new isotopic insights from Portugal鈥檚 Atlantic coast. Antiquity 90: 604-619. DOI: 10.15184/aqy.2016.34.
Guiry E., Szpak P., Richards M.P. 2016. Effects of lipid extraction and ultrafiltration on stable-carbon and nitrogen-isotope compositions of fish-bone collagen. Rapid Communications in Mass Spectrometry 30: 1591-1600. DOI: 10.1002/rcm.7590.
Guiry E., Hepburn J.C., Richards M.P. 2016. High-resolution serial sampling for nitrogen-isotope analysis of archaeological mammal teeth. Journal of Archaeological Science 69: 21-28. DOI: 10.1016/j.jas.2016.03.005.
Guiry E., Gaulton B. 2016. Inferring human behaviours from isotopic analyses of rat diets: a critical review and historical application. Journal of Archaeological Method and Theory 23: 399-426. DOI: 10.1007/s10816-015-9248-9.
Antsey R.J., Guiry E., Renouf M.A.P., Deal M. 2016. Dating archaeobotanical remains: a cautionary tale from Port au Choix, Newfoundland. Vegetation History and Archaeobotany 25 (1): 75-84. DOI: 10.1007/s00334-015-0526-y.
Letham B., Martindale A., Guiry E., Macdonald R., Ames K. 2016. Post-glacial relative sea-level history of Prince Rupert Harbour, British Columbia, Canada. Quaternary Science Reviews 153: 156-191. DOI: 10.1016/j.quascirev.2016.10.004.
Tourigny E., Thomas R., Guiry E., Earp R., Allen A., et al. 2016. An osteobiography of a 19th-century dog from Toronto, Canada. International Journal of Osteoarchaeology 26: 818-829. DOI: 10.1002/oa.2483.
2015
Guiry E., Hillier M., Richards M.P. 2015. Mesolithic dietary heterogeneity on the European Atlantic coast: stable-isotope insights into hunter-gatherer foodways in the Sado Valley, Portugal. Current Anthropology 56: 460-470. DOI: 10.1086/680854.
Guiry E., Staniforth M., Nehlich O., Grimes V., Smith C., et al. 2015. Tracing historical animal husbandry, meat trade, and food provisioning: a multi-isotopic approach to the analysis of shipwreck faunal remains from William Salthouse, Port Phillip, Australia. Journal of Archaeological Science: Reports 1: 21-28. DOI: 10.1016/j.jasrep.2014.10.001.
2014
Guiry E., Harpley B., Jones Z., Smith C. 2014. Integrating stable-isotope and zooarchaeological analyses in historical archaeology: a case study from the urban 19th-century Commonwealth Block site, Melbourne, Australia. International Journal of Historical Archaeology 18: 415-440. DOI: 10.1007/s10761-014-0264-3.
Guiry E., No毛l S., Tourigny E. 2014. Stable-isotope bone chemistry and human鈥揳nimal interactions in north-eastern historical archaeology. Northeast Historical Archaeology 41: 126-143. DOI: 10.22191/neha/vol41/iss1/7.
Grimes V., Fuller B.T., Guiry E. 2014. Reconstructing diets and origins of Vikings at Hr铆sbr煤, Mosfell Valley, Iceland: the carbon, nitrogen and strontium isotope evidence. In Zori D., Byock J. (eds.), Viking Archaeology in Iceland: Mosfell Archaeology Project (pp. 105-116). Brepols, Belgium. DOI: 10.1484/M.CURSOR-EB.1.102215.
2013
Guiry E., Grimes V. 2013. Domestic-dog (Canis familiaris) diets among coastal Late Archaic groups of north-eastern North America: a case study for the canine-surrogacy approach. Journal of Anthropological Archaeology 32: 732-745. DOI: 10.1016/j.jaa.2013.04.005.
Guiry E. 2013. A canine-surrogacy approach to human palaeodietary bone chemistry: past development and future directions. Archaeological and Anthropological Sciences 5: 275-286. DOI: 10.1007/s12520-013-0133-8.
2013
Guiry E. 2012. Dogs as analogues in human stable-isotope-based palaeodietary reconstructions: a review and consideration for future use. Journal of Archaeological Method and Theory 19: 351-376. DOI: 10.1007/s10816-011-9118-z.
Guiry E., No毛l S., Tourigny E., Grimes V. 2012. A stable-isotope method for identifying the trans-Atlantic origin of pig remains at early European fishing stations in Newfoundland. Journal of Archaeological Science 39: 2012-2022. DOI: 10.1016/j.jas.2012.03.004.