Professor Thegn Niels Ladefoged
MA PhD (Hawaii)
- Professor of Anthropology
Research | Current
- Oceanic prehistory
- Socio-political transformations
- Agricultural development
- Landscape archaeology
- Spatial analysis
Thegn’s research includes projects in New Zealand, Hawai‘i, and Rapa Nui.
Thegn’s research in New Zealand focuses on three projects. The first was recently funded by the Royal Society of New Zealand Marsden Fund. Working with McCoy, Stevenson, O’Neale and Jorgensen the project examines how social networks beyond the village changed as Māori society developed. By tracing the spatial and temporal distribution of obsidian artefacts the project will document where and when new types of social forms came about in relation to diverse social and environmental contexts. The project builds on established methods for determining the movement of obsidian through chemical signatures of natural obsidian sources. Proposed experiments will re-establish obsidian hydration dating as a viable method for determining the age of New Zealand artefacts. By utilizing GIS and social network analysis modelling we will integrate the data to investigate the dynamic complexities of social interaction and gain new insights into how Māori society was transformed from village-based groups to powerful hapū and iwi.
Thegn’s second New Zealand project is as a member of Te Pūnaha Matatini: The Centre for Complex Systems and Networks, a New Zealand Government funded Centre of Research Excellence. Thegn is working with Allen, Plank, Kerr, and PhD student Reno Nims on a project investigating changes in Māori fishing.
Thegn’s third New Zealand based project is on Ahuahu/Great Mercury Island, working with Ngati Hei, Sir Michael Fay, Holdaway, Philipps, Jorgensen, and Furey. The project is investigating the history and land use of the island, with Thegn focusing on gardening activities on the island.
Thegn’s Hawai’i research is investigating Hawaiian ecodynamics, with an emphasis on the leeward districts of Kohala and Kona on the Big Island of Hawai’i. This research has been funded by the Royal Society of New Zealand Marsden Fund, the National Science Foundation, with further grant applications in development. The work is multidisciplinary in nature and involves collaboration with archaeologists (McCoy, Kirch, Graves, Mulrooney, and Field), ecologists (Vitousek, Lincoln), soil scientists (Chadwick), botanists (Hotchkiss), and demographers (Tuljapurkar, Lee, Puleston). Thegn’s focus is on leeward rain-fed agricultural fieldsystems, where he is documenting the relationships between agricultural development, sociopolitical transformations, and ideological shifts.
On Rapa Nui, Thegn is involved in a project investigating the evidence for terrestrial resource dynamics and societal collapse. The project was funded by the National Science Foundation and includes researchers from Rapa Nui (Haoa), the United States (Stevenson, Chadwick, Vitousek, Puleston), and New Zealand (Ladefoged). The research is focusing on climate change, environmental degradation, and subsistence transformations to develop an empirical assessment of how these may, or may not, have influenced pre-European contact societal collapse on the island.
Teaching | Current
ANTHRO 200 Archaeology: Understanding the Past
ANTHRO 306 Pacific Archaeology
ANTHRO 703AB Landscape Archaeology
Selected publications and creative works (Research Outputs)
- Holdaway, S. J., Emmitt, J., Furey, L., Jorgensen, A., O'Regan G, Phillipps, R., ... Ladefoged, T. N. (2019). Māori settlement of New Zealand: the Anthropocene as a process. Archaeology in Oceania, 54 (1), 17-34. 10.1002/arco.5173
Other University of Auckland co-authors: Simon Holdaway, Joshua Emmitt, Alex Jorgensen, Gerard O'Regan, Rebecca Phillipps
- Puleston, C. O., Ladefoged, T. N., Haoa, S., Chadwick, O. A., Vitousek, P. M., & Stevenson, C. M. (2018). Response: Commentary: Rain, Sun, Soil, and Sweat: A Consideration of Population Limits on Rapa Nui (Easter Island) before European Contact. Frontiers in Ecology and Evolution, 6.10.3389/fevo.2018.00072
- Plank, M. J., Allen, M. S., Nims, R., & Ladefoged, T. N. (2018). Inferring fishing intensity from contemporary and archaeological size-frequency data. Journal of Archaeological Science, 93, 42-53. 10.1016/j.jas.2018.01.011
Other University of Auckland co-authors: Melinda Allen, Reno Nims
- McIvor, I. H., & Ladefoged, T. N. (2018). Intermittent irrigation in the Waimea Field System, Hawai'i Island: A computational fluid dynamics model. Journal of Archaeological Science: Reports, 17, 335-345. 10.1016/j.jasrep.2017.09.021
- Lincoln, N. K., McCoy, M. D., & Ladefoged, T. N. (2018). Stable carbon and nitrogen isotopes in kukui (Aleurites moluccanus) endocarp along rainfall and elevation gradients: Archaeological implications. PloS one, 13 (10)10.1371/journal.pone.0204654
- Ladefoged, T. N., PRESTON, A., VITOUSEK, P. M., CHADWICK, O. A., STEIN, J., GRAVES, M. W., & LINCOLN, N. (2017). Soil nutrients and pre-European contact agriculture in the leeward Kohala field system, Island of Hawai‘i. Archaeology in Oceania10.1002/arco.5138
- Furey, L., Emmitt, J. J., Phillipps, R., Ladefoged, T., Jorgensen, A., & Holdaway, S. (2017). Brief interim report for excavations on Ahuahu Great Mercury Island, June 2014 to February 2017. Archaeology in New Zealand, 60 (3), 45-63.
Other University of Auckland co-authors: Joshua Emmitt, Rebecca Phillipps, Alex Jorgensen, Simon Holdaway
- Puleston, C. O., Ladefoged, T. N., Haoa, S., Chadwick, O. A., Vitousek, P. M., & Stevenson, C. M. (2017). Rain, sun, soil, and sweat: A consideration of population limits on Rapa Nui (Easter Island) before European contact. Frontiers in Ecology and Evolution, 510.3389/fevo.2017.00069