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Dr. Jonathan Lothrop

Curator of Archaeology
jonathan.lothrop@nysed.gov

518-486-2992

My research is focused on how and when Indigenous peoples migrated into what we now call New York during the Late Pleistocene or Ice Age and the Early Holocene, between 13,000 and 10,000 years ago, and how they survived initially on the region's subarctic landscapes. Our approach involves integrated studies of Ice Age archaeological sites and artifact collections from across New York and surrounding regions to: (1) refine understandings of the archaeological chronology and material culture of the earliest Native Americans, and (2) using archaeological evidence, model changes through time in the lifeways of these First Peoples. A key aspect of this work involves collaborating with earth scientists at the NYSM and elsewhere to better understand the Late Pleistocene and Early Holocene landscapes and environments of these peoples. At the broadest level, this research contributes to our collective understanding of the Late Pleistocene peopling of the New World and how some early peoples may have responded to rapid environmental and climatic changes at the end of the Ice Age, circa 11,600 years ago.

Publications

2025

J. Kirchman, A. Kimmitt, B. Benz, T.M. Pegan, B.C. Weeks, Y. Aubry, T.M. Burg, J. Hudon, A.W. Jones, K.C. Ruegg, B.M. Winger 2025, Long-distance seasonal migration to the tropics promotes genetic diversity but not gene flow in boreal birds, Nature Ecology & Evolution , . 10.1038/s41559-025-02699-3
R. Feranec, J. Kirchman, B. vonHoldt, J. Butera 2025, A Remarkable Specimen Record of an Apparently Wild Gray Wolf (Canis lupus) from Upstate New York, Northeastern Naturalist 38, 455-471. 10.1656/045.032.0310

2023

J. Kirchman, A. Kimmitt, T. Pegan, A. Jones, K. Wacker, C. Brennan, Jocelyn Hudon, K. Ruegg, B. Benz, R. Herman, B. Winger 2023, Genetic evidence for widespread population size expansion in North American boreal birds prior to the Last Glacial Maximum, Proceedings of the Royal Society B: Biological Sciences 290, 20221334. 10.1098/rspb.2022.1334
Michael Nachman, Elizabeth Beckman, Rauri Bowie, Carla Cicero, Chris Conroy, Robert Dudley, Tyrone Hayes, Michelle Koo, Eileen Lacey, Christopher Martin, Jimmy McGuire, James Patton, Carol Spencer, Rebecca Tarvin, Marvalee Wake, Ian Wang, Anang Achmadi, Sergio Alvarez-Casta\~neda, Michael Andersen, Jairo Arroyave, Christopher Austin, Keith Barker, Lisa Barrow, George Barrowclough, John Bates, Aaron Bauer, Kayce Bell, Rayna Bell, Allison Bronson, Rafe Brown, Frank Burbrink, Kevin Burns, Carlos Cadena, David Cannatella, Todd Castoe, Prosanta Chakrabarty, Jocelyn Colella, Joseph Cook, Joel Cracraft, Drew Davis, Alison Rabosky, Guillermo ia, John Dumbacher, Jonathan Dunnum, Scott Edwards, Jacob Esselstyn, Juli\ Faivovich, Jon a, Oscar Flores-Villela, Kassandra Ford 2023, Specimen collection is essential for modern science, PLOS Biology 21, e3002318. 10.1371/journal.pbio.300231810.1371/journal.pbio.3002318.s001

2022

J. Kirchman, Flavia Termignoni-Garcia, Johnathan Clark, Scott Edwards, Russell Corbett-Detig 2022, Comparative Population Genomics of Cryptic Speciation and Adaptive Divergence in Bicknell’s and Gray-Cheeked Thrushes (Aves:Catharus bicknelli and Catharus minimus), Genome Biology and Evolution 14, . 10.1093/gbe/evab255

2021

J. Kirchman, N. Rotzel-McInerney, Thomas Giarla, Storrs Olson, Elizabeth Slikas, Robert Fleischer 2021, Phylogeny based on ultra-conserved elements clarifies the evolution of rails and allies (Ralloidea) and is the basis for a revised classification, Ornithology 138, 1-21. 10.1093/ornithology/ukab042
J. Kirchman, J. Ralston, A. FitzGerald, T. Burg, N. Starkloff, I. Warkentin 2021, Comparative phylogeographic analysis suggests a shared history among eastern North American boreal forest birds, Ornithology , . 10.1093/ornithology/ukab018
J. Kirchman, A. FitzGerald, N. Starkloff, W. Turner, M. Oftedal, E. Martinsen 2021, Disentangling the effects of host relatedness and elevation on haemosporidian parasite turnover in a clade of songbirds, Ecosphere 12, e03497. 10.1002/ecs2.3497

2020

J. Kirchman 2020, Bicknell’s Thrush Discovered in the Catskills. Catskill Tri-County Historical Views 3, 6-14
J. Kirchman, Angelena Ross, Glenn Johnson 2020, Historical decline of genetic diversity in a range-periphery population of Spruce Grouse (Falcipennis canadensis) inhabiting the Adirondack Mountains, Conservation Genetics 21, 373–380. 10.1007/s10592-019-01246-5