JAMES BRADLEY
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Halbach, L, Kitzinger K, Hansen M, Littmann S, Benning L G, Bradley J A, Whitehouse M J, Olofsson M, Mourot R, Tranter M, Kuypers M MM, Ellegaard-Jensen L, Anesio A M. (2025) Single-cell imaging reveals efficient nutrient uptake and growth of microalgae darkening the Greenland Ice Sheet. Nature Communications, 16, 1521. Doi: 10.1038/s41467-025-56664-6

Cimpoiasu M O, Kuras O, Harrison H, Wilkinson P B, Meldrum P, Chambers J E, Liljestrand D, Oroza C, Schmidt S K, Sommers P, Vimercati L, Irons T P, Lyu Z, Solon A, Bradley J A. (2025) High-resolution 4D electrical resistivity tomography and below-ground point sensor monitoring of High Arctic deglaciated sediments capture zero-curtain effects, freeze–thaw transitions, and mid-winter thawing. The Cryosphere. 19, 401–421, Doi: 10.5194/tc-19-401-2025

Roy S, Dawson R A, Bradley J A, Hernández M. (2025) Prevalence and dynamics of antimicrobial resistance in pioneer and developing Arctic soils. BMC Microbiology. 25, 50. Doi: 10.1186/s12866-025-03745-7

Waldrop M, Ernakovich J, Vishnivetskaya T, Schaefer S, Mackelprang R, Barta J, O′Brien J, Winkel M, Barbato R, Heffernan L, Leewis MC, Hewitt R, Hultman J, Sun Y, Biasi C, Bradley J A, Liebner S, Ricketts M, Muscarella M, Schütte U, Abuah F, Whalen E, Timling I, Voigt C, Taş N, Lloyd K, Siljanen H, Rivkina E, Voříšková J, Tao J, Liang R, Li Z, Lennon J, Onstott T. (2025) Microbial Ecology of Permafrost Soils: Populations, Processes, and Perspectives. Permafrost and Periglacial Processes. Doi: 10.1002/ppp.2264

Ruff S E, Hrabe de Angelis I, Mullis M, Payet J P, Magnabosco C, Lloyd K G, Sheik C S, Steen A D, Shipunova A, Morozov A, Reese B K, Bradley J A, Lemonnier C, Schrenk M O, Joye S B, Huber J A, Probst A J, Morrison H G, Sogin M L, Ladau J, Colwell F. (2024) A global comparison of surface and subsurface microbiomes reveals large-scale biodiversity gradients, and a marine-terrestrial divide. Science Advances. eadq0645. doi: 10.1126/sciadv.adq0645

Trejos-Espeleta JC, Marin-Jaramillo J P, Schmidt S K, Sommers P, Bradley J A°, Orsi W D°. (2024) Principal role of fungi in soil carbon stabilization during early pedogenesis in the high Arctic. Proceedings of the National Academy of Sciences. doi: 10.1073/pnas.2402689121 (°co-corresponding authors)

Lappan R, Thakar J, Molares Moncayo L, Besser A, Bradley J A°, Goordial J°, Trembath-Reichert E°, Greening C°. (2024) The atmosphere: a transport medium or an active microbial ecosystem? The ISME Journal, wrae092, doi: 10.1093/ismejo/wrae092 (°co-corresponding authors)

Lyu Z, Sommers P, Schmidt S K, Magnani M, Cimpoiasu M, Kuras O, Zhuang Q, Oh Y, De La Fuente M, Cramm M, Bradley J A. (2024) Seasonal dynamics of Arctic soils: Capturing year-round processes in measurements and soil biogeochemical models. Earth-Science Reviews, 254, 104820, doi: 10.1016/j.earscirev.2024.104820

Makowska-Zawierucha N, Trzebny A, Zawierucha K, Manthapuri V, Bradley J A, Pruden A. (2024) Arctic plasmidome analysis reveals distinct relationships among associated antimicrobial resistance genes and virulence genes along anthropogenic gradients. Global Change Biology. doi: 10.1111/gcb.17293

Cimpoiasu M, Kuras O, Harrison H, Wilkinson, P, Meldrum P, Chambers J, Liljestrand D, Oroza C, Schmidt S, Sommers P, Irons T, Bradley J A. (2024) Characterization of a Deglaciated Sediment Chronosequence in the High Arctic Using Near-Surface Geoelectrical Monitoring Methods. Permafrost and Periglacial Processes. doi: 10.1002/ppp.2220

Moore O, Curti L, Woulds C, Bradley J A, Mills B, Homoky W, Xiao K, Babakhani P, Bray A , Fisher B, Kazemian M, Kaulich B, Dale A, Peacock C. (2023) Long-term organic carbon preservation enhanced by iron and manganese. Nature. https://doi.org/10.1038/s41586-023-06325-9

Bradley J A, Trivedi C, Winkel M, Mourot R, Lutz S, Larose C, Keuschnig C, Doting E, Halbach L, Zervas A, Anesio A, Benning L. (2023) Active and dormant microorganisms on glacier surfaces. Geobiology. doi: 10.1111/gbi.12535
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Soares A R, Edwards A, An D, Bagnoud A, Bradley J A, Barnhart E, Bomberg M, Budwill K, Caffrey S, Fields M, Gralnick J, Kadnikov V, Momper L, Osburn M, Mu A, Moreau J, Moser D, Purkamo L, Rassner S, Sheik C, Sherwood Lollar B, Toner B, Voordouw G, Wouters K, Mitchell A. (2023) A global perspective on bacterial diversity in the terrestrial deep subsurface. Microbiology. doi: 10.1099/mic.0.001172

Bradley J A° Hülse D°, LaRowe D, Arndt S (2022) Transfer Efficiency of Organic Carbon in Marine Sediments. Nature Communications. doi:10.1038/s41467-022-35112-9 (°co-first authors)

Halbach L, Chevrollier L, Doting E, Cook J, Jensen M, Benning L, Bradley J A, Hansen M, Lund-Hansen L, Markager S, Sorrell B, Tranter M, Trivedi T, Winkel M, Anesio A. (2022) Pigment signatures of algal communities and their implications for glacier surface darkening. Scientific Reports. doi: 10.1038/s41598-022-22271-4

Yu K, Hoogen J, Wang Z, Averill C, Routh D, Smith G, Drenovsky R, Scow K, Mo F, Waldrop M, Yang Y, Vries F, Bardgett R, Manning P, Bastida F, Baer S, Bach E, García C, Wang Q, Ma L, Chen B, Ye J, Teurlincx S, Heijboer A, Bradley J A, Crowther T. (2022) The biogeography of relative abundance of soil fungi versus bacteria in surface topsoil. Earth System Science Data. doi: 10.5194/essd-14-4339-2022

Bradley J A, Arndt S, Amend J, Burwicz-Galerne E, LaRowe D (2022) Sources and fluxes of organic carbon and energy to microorganisms in global marine sediments. Frontiers in Microbiology. 13:910694. doi: 10.3389/fmicb.2022.910694​

Trivedi C B, Keuschnig C, Larose C, Rissi D V, Mourot R, Bradley J A, Winkel M, Benning L G (2022) DNA/RNA Preservation in Glacial Snow and Ice Samples, Frontiers in Microbiology, 13:894893. doi:10.3389/fmicb.2022.894893

Winkel M, Trivedi C B, Mourot R, Bradley J A, Vieth-Hillebrand A, Benning L G (2022) Seasonality of Glacial Snow and Ice Microbial Communities, Frontiers in Microbiology, 13:876848. doi: 10.3389/fmicb.2022.876848

Wojcik R, Eichel J, Bradley J A, Benning LG (2021) How allogenic factors affect succession in glacier forefields. Earth Science Reviews. doi:10.1016/j.earscirev.2021.103642

Hand, K., Phillips, C. B., Chyba, C. F., Toner, B., Katija, K., Orphan, V., Bradley, J A et al. (2021). On the Past, Present, and Future Role of Biology in NASA’s Exploration of our Solar System. Bulletin of the AAS, 53(4). https://doi.org/10.3847/25c2cfeb.1f3849db

Bay S, Dong X, Bradley J A, Leung P M, Grinter R, Jirapanjawat T, Arndt S, Cook P, LaRowe D, Nauer P, Chiri E, Greening C. (2021) Trace gas oxidizers are widespread and active members of soil microbial communities. Nature Microbiology. doi: 10.1038/s41564-020-00811-w

Bradley J A (2021) Microbial dynamics in forefield soils following glacier retreat. In: Liebner S, Ganzert L (Ed.) Microbial Life In the Cryosphere and its Feedback on Global Change. de Gruyter, Berlin, Germany, doi:10.1515/9783110497083-013

Lutz S, Bradley J A (2021) Glacial surfaces: functions and biogeography. In: Li ebner S, Ganzert L (Ed.) Microbial Life In the Cryosphere and its Feedback on Global Change. de Gruyter, Berlin, Germany, doi:10.1515/9783110497083-012

Li M, Sutfin N A, Christie M,  Neelam M, Bradley J A (2020) Making a Place for the Next Generation of Geoscientists. Eos, 101, doi: 10.1029/2020EO151355

Bradley J A, Arndt S, Amend J, Burwicz E, Dale A, Egger M, LaRowe D. (2020) Widespread energy limitation to life in global subseafloor sediments. Science Advances. doi: 10.1126/sciadv.aba0697

LaRowe D, Arndt S, Bradley J A, Burwicz E, Dale A, Amend J (2020) Organic carbon and microbial activity in marine sediments on a global scale throughout the Quaternary. Geochimica et Cosmochimica Acta. doi: 10.1016/j.gca.2020.07.017

Stibal M, Bradley J A, Edwards A, Hotaling S, Zawierucha K, Rosvold J, Lutz S, Cameron K, Mikucki J, Kohler T, Šabacká M, Anesio A. (2020) Glacial ecosystems are essential to understanding biodiversity responses to glacier retreat. Nature Ecology and Evolution. doi: 10.1038/s41559-020-1163-0

LaRowe D, Arndt S, Bradley J A, Estes E, Hoarfrost A, Lang S, Lloyd K, Mahmoudi N, Orsi W, Shah Walter S, Steen A, Zhao R (2020) The fate of organic carbon in marine sediments - New insights from recent data and analysis. Earth Science Reviews. doi: 10.1016/j.earscirev.2020.103146

Orcutt B, Bradley J A, Brazelton W, Estes E, Goordial J, Huber J, Jones R, Mahmoudi N, Marlow J, Murdock S, Pachiadaki M. (2020) Impacts of Deep-Sea Mining on Microbial Ecosystem Services. Limnology & Oceanography. doi: 10.1002/lno.11403

Bradley J A, Amend J, LaRowe D. (2019) Survival of the fewest: Microbial dormancy and maintenance in marine sediments through deep time. Geobiology. doi: 10.1111/gbi.12313

Bradley J A, Amend J, LaRowe D. (2018) Necromass as a limited source of energy for microorganisms in marine sediments. Journal of Geophysical Research: Biogeosciences. 123. doi: 10.1002/2017JG004186

Bradley J A, Amend J, LaRowe D. (2018) Bioenergetic controls on microbial ecophysiology in marine sediments. Frontiers in Microbiology – Extreme Microbiology. doi: 10.3389/fmicb.2018.00180

Bradley J A
°​, Daille L°​, Trivedi C°​, Bojanowski C, Stamps B, Stevenson B, Nunn H, Johnson H, Loyd S, Berelson W, Corsetti F, Spear J. (2017) Carbonate-Rich Dendrolitic Cones: Insights into a Modern Analogue for Incipient Microbialite Formation, Little Hot Creek, Long Valley Caldera, California. npj Biofilms and Microbiomes. doi:10.1038/s41522-017-0041-2 (°​co-first authors)

Stibal M, Bradley J A, Box J (2017) Ecological modelling of the supraglacial ecosystem: a process-based perspective. Frontiers in Earth Science. doi: 10.3389/feart.2017.00052

Bradley J A, Anesio, A, Arndt S (2017) Microbial and biogeochemical dynamics in glacier forefields are sensitive to century-scale climate and anthropogenic change.  Frontiers in Earth Science. doi: 10.3389/feart.2017.00026

Bradley J A, Arndt S, Šabacká M, Benning L, Barker G, Blacker J, Yallop M, Wright K, Bellas C, Telling J, Tranter M, Anesio A (2016) Microbial dynamics in a High-Arctic glacier forefield: a combined field, laboratory, and modelling approach.  Biogeosciences. doi: 10.5194/bg-13-5677-2016

Bradley J A, Anesio A, Arndt S. (2016) Bridging the divide: A model-data approach to Polar & Alpine Microbiology. FEMS Microbiology Ecology. doi: 10.1093/femsec/fiw015

Pearce D, Irina A, Terauds A, Wilmotte A, Quesada A, Edwards A, Dommergue A, Sattler B, Adams B, Magalhães C, Wan Loy C, Yim M. Lau C, Cary C, Smith D, Wall D, Eguren G, Matcher G, Bradley J A, Devera J, Elster J, Hughes K, Benning L, Gunde-Cimerman N, Convey P, Gyu Hong S, Pointing S, Pellizari V, Vincent W (2016) Aerobiology over Antarctica – a new initiative for atmospheric ecology. Frontiers in Microbiology. 7. doi: 10.3389/fmicb.2016.00016

Bradley J A, Anesio A, Singarayer J, Heath M, Arndt S. (2015) SHIMMER (1.0): A novel mathematical model for microbial and biogeochemical dynamics in glacier forefield ecosystems. Geoscientific Model Development. 8, 3441-3470. doi: 10.5194/gmd-8-3441-2015

Bradley J A, Singarayer J, Anesio A. (2014) Microbial community dynamics in the forefield of glaciers. Proceedings of the Royal Society B. 281: 20140882. doi: 10.1098/rspb.2014.0882
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