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Persistent net release of carbon dioxide and methane from an Alaskan lowland boreal peatland complex.
Euskirchen ES, Edgar CW, Kane ES, Waldrop MP, Neumann RB, Manies KL, Douglas TA, Dieleman C, Jones MC, Turetsky MR. Euskirchen ES, et al. Among authors: douglas ta. Glob Chang Biol. 2024 Jan;30(1):e17139. doi: 10.1111/gcb.17139. Glob Chang Biol. 2024. PMID: 38273498
Since our measurements occur within close proximity of each other (1 km(2) ), this study also has implications for the spatial scale and data used in benchmarking carbon cycle models and emphasizes the necessity of long-term measurements to identify carbon cycle process ch …
Since our measurements occur within close proximity of each other (1 km(2) ), this study also has implications for the spatial scale and dat …
Climate change and mercury in the Arctic: Abiotic interactions.
Chételat J, McKinney MA, Amyot M, Dastoor A, Douglas TA, Heimbürger-Boavida LE, Kirk J, Kahilainen KK, Outridge PM, Pelletier N, Skov H, St Pierre K, Vuorenmaa J, Wang F. Chételat J, et al. Among authors: douglas ta. Sci Total Environ. 2022 Jun 10;824:153715. doi: 10.1016/j.scitotenv.2022.153715. Epub 2022 Feb 9. Sci Total Environ. 2022. PMID: 35149079 Free article. Review.
Improved geographic coverage of measurements and modeling approaches are needed to better evaluate net effects of climate change and long-term implications for Hg contamination in the Arctic....
Improved geographic coverage of measurements and modeling approaches are needed to better evaluate net effects of climate change and long- …
Environmental impact of metals resulting from military training activities: A review.
Barker AJ, Clausen JL, Douglas TA, Bednar AJ, Griggs CS, Martin WA. Barker AJ, et al. Among authors: douglas ta. Chemosphere. 2021 Feb;265:129110. doi: 10.1016/j.chemosphere.2020.129110. Epub 2020 Nov 26. Chemosphere. 2021. PMID: 33272677 Review.
The deposition of metals into the environment as a result of military training activities remains a long-term concern for Defense organizations across the globe. Of particular concern for deposition and potential mobilization are antimony (Sb), arsenic (As), copper (Cu), l …
The deposition of metals into the environment as a result of military training activities remains a long-term concern for Defense org …
Life at the Frozen Limit: Microbial Carbon Metabolism Across a Late Pleistocene Permafrost Chronosequence.
Leewis MC, Berlemont R, Podgorski DC, Srinivas A, Zito P, Spencer RGM, McFarland J, Douglas TA, Conaway CH, Waldrop M, Mackelprang R. Leewis MC, et al. Among authors: douglas ta. Front Microbiol. 2020 Jul 29;11:1753. doi: 10.3389/fmicb.2020.01753. eCollection 2020. Front Microbiol. 2020. PMID: 32849382 Free PMC article.
We present a conceptual model of microbial metabolism in permafrost based on fermentation of OM and the buildup of organic acids that helps to explain the unique chemistry of ancient permafrost soils. These findings imply long-term in situ microbial turnover of ancient per …
We present a conceptual model of microbial metabolism in permafrost based on fermentation of OM and the buildup of organic acids that helps …
Sublimation of terrestrial permafrost and the implications for ice-loss processes on Mars.
Douglas TA, Mellon MT. Douglas TA, et al. Nat Commun. 2019 Apr 12;10(1):1716. doi: 10.1038/s41467-019-09410-8. Nat Commun. 2019. PMID: 30979886 Free PMC article.
Here we report 52 years of sublimation measurements from a permafrost tunnel near Fairbanks, Alaska, and constrain models of sublimation, diffusion through porous soil, and lag formation. We derive the first long-term in situ effective diffusion coefficient of ice-free loe …
Here we report 52 years of sublimation measurements from a permafrost tunnel near Fairbanks, Alaska, and constrain models of sublimation, di …
Widespread global peatland establishment and persistence over the last 130,000 y.
Treat CC, Kleinen T, Broothaerts N, Dalton AS, Dommain R, Douglas TA, Drexler JZ, Finkelstein SA, Grosse G, Hope G, Hutchings J, Jones MC, Kuhry P, Lacourse T, Lähteenoja O, Loisel J, Notebaert B, Payne RJ, Peteet DM, Sannel ABK, Stelling JM, Strauss J, Swindles GT, Talbot J, Tarnocai C, Verstraeten G, Williams CJ, Xia Z, Yu Z, Väliranta M, Hättestrand M, Alexanderson H, Brovkin V. Treat CC, et al. Among authors: douglas ta. Proc Natl Acad Sci U S A. 2019 Mar 12;116(11):4822-4827. doi: 10.1073/pnas.1813305116. Epub 2019 Feb 25. Proc Natl Acad Sci U S A. 2019. PMID: 30804186 Free PMC article.
Peat burial by mineral sediments represents a mechanism for long-term terrestrial C storage in the Earth system. These results show that northern peatlands accumulate significant C stocks during warmer times, indicating their potential for C sequestration during the warmin …
Peat burial by mineral sediments represents a mechanism for long-term terrestrial C storage in the Earth system. These results show t …
Changes in the Active, Dead, and Dormant Microbial Community Structure across a Pleistocene Permafrost Chronosequence.
Burkert A, Douglas TA, Waldrop MP, Mackelprang R. Burkert A, et al. Among authors: douglas ta. Appl Environ Microbiol. 2019 Mar 22;85(7):e02646-18. doi: 10.1128/AEM.02646-18. Print 2019 Apr 1. Appl Environ Microbiol. 2019. PMID: 30683748 Free PMC article.
We found evidence that cells capable of forming endospores are not necessarily dormant and that members of the class Bacilli were more likely to form endospores in response to long-term stressors associated with permafrost environmental conditions than members of the Clost …
We found evidence that cells capable of forming endospores are not necessarily dormant and that members of the class Bacilli were more likel …
Microbial survival strategies in ancient permafrost: insights from metagenomics.
Mackelprang R, Burkert A, Haw M, Mahendrarajah T, Conaway CH, Douglas TA, Waldrop MP. Mackelprang R, et al. Among authors: douglas ta. ISME J. 2017 Oct;11(10):2305-2318. doi: 10.1038/ismej.2017.93. Epub 2017 Jul 11. ISME J. 2017. PMID: 28696425 Free PMC article.
Reconstruction of paleovegetation from metagenomic sequence suggests vegetation differences in the paleo record are not responsible for shifts in community composition and function. Rather, we observed shifts consistent with long-term survival strategies in extreme cryogen …
Reconstruction of paleovegetation from metagenomic sequence suggests vegetation differences in the paleo record are not responsible for shif …
Early Lung Disease in Infants and Preschool Children with Cystic Fibrosis. What Have We Learned and What Should We Do about It?
Ranganathan SC, Hall GL, Sly PD, Stick SM, Douglas TA; Australian Respiratory Early Surveillance Team for Cystic Fibrosis (AREST-CF). Ranganathan SC, et al. Among authors: douglas ta. Am J Respir Crit Care Med. 2017 Jun 15;195(12):1567-1575. doi: 10.1164/rccm.201606-1107CI. Am J Respir Crit Care Med. 2017. PMID: 27911585 Free PMC article. Review.
Early childhood represents a pivotal period amenable to intervention strategies that could delay or prevent the onset of lung damage and alter the longer-term clinical trajectory for individuals with CF. This review summarizes what we have learned about early lung disease …
Early childhood represents a pivotal period amenable to intervention strategies that could delay or prevent the onset of lung damage and alt …