Radiolytically reworked Archean organic matter in a habitable deep ancient high-temperature brine

Autor: Devan M. Nisson, Clifford C. Walters, Martha L. Chacón-Patiño, Chad R. Weisbrod, Thomas L. Kieft, Barbara Sherwood Lollar, Oliver Warr, Julio Castillo, Scott M. Perl, Errol D. Cason, Barry M. Freifeld, Tullis C. Onstott

Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023)

Abstract Investigations of abiotic and biotic contributions to dissolved organic carbon (DOC) are required to constrain microbial habitability in continental subsurface fluids. Here we investigate a large (101–283 mg C/L) DOC pool in an ancient (>1

Externí odkaz: https://doaj.org/article/6c6785969a554935b3dbc7e661b44d81

Comparisons of the composition and biogeographic distribution of the bacterial communities occupying South African thermal springs with those inhabiting deep subsurface fracture water

Autor: Cara eMagnabosco, Memory eTekere, Maggie CY Lau, Borja eLinage, Olukayode eKuloyo, Mariana eErasmus, Errol eCason, Esta evan Heerden, Gaetan eBorgonie, Thomas L. Kieft, Jana eOliver, Tullis C Onstott

Publikováno v: Frontiers in Microbiology, Vol 5 (2014)

South Africa has numerous thermal springs that represent topographically driven meteoric water migrating along major fracture zones. The temperature (40-70°C) and pH (8-9) of the thermal springs in the Limpopo Province are very similar to those of t

Externí odkaz: https://doaj.org/article/8679ab59bd8a4904820c963a34c71413

Trends and Future Challenges in Sampling the Deep Terrestrial Biosphere

Autor: Michael J Wilkins, Rebecca eDaly, Paula J Mouser, Ryan eTrexler, Kelly C Wrighton, Shikha eSharma, David R Cole, Jennifer F Biddle, Elizabeth eDenis, Jim K Fredrickson, Thomas L. Kieft, Tullis C Onstott, Lee ePetersen, Susan M Pfiffner, Tommy J Phelps, Matthew O Schrenk

Publikováno v: Frontiers in Microbiology, Vol 5 (2014)

Research in the deep terrestrial biosphere is driven by interest in novel biodiversity and metabolisms, biogeochemical cycling, and the impact of human activities on this ecosystem. As this interest continues to grow, it is important to ensure that w

Externí odkaz: https://doaj.org/article/ebd82fd7a7ab4df9a44e129aba64c400

Toxicological Study of Fluorescent Hydrologic Tracer Dye Effects on Cave Bacteria

Autor: Thomas L. Kieft, Evelyn Byrd, George Veni

Publikováno v: Groundwater. 60:404-409

Fluorescent dyes are commonly used as hydrologic tracers in a variety of surface and subsurface environments, including karst aquifers and caves, but the fragile nature of karstic groundwater ecosystems suggests a cautious approach to selecting dyes.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::955e246efc1fbf53ce95f23439406f90
https://doi.org/10.1111/gwat.13160

COSPAR Sample Safety Assessment Framework (SSAF)

Autor: Gerhard Kminek, James N. Benardini, Frank E. Brenker, Timothy Brooks, Aaron S. Burton, Suresh Dhaniyala, Jason P. Dworkin, Jeffrey L. Fortman, Mihaela Glamoclija, Monica M. Grady, Heather V. Graham, Junichi Haruyama, Thomas L. Kieft, Marion Koopmans, Francis M. McCubbin, Michael A. Meyer, Christian Mustin, Tullis C. Onstott, Neil Pearce, Lisa M. Pratt, Mark A. Sephton, Sandra Siljeström, Haruna Sugahara, Shino Suzuki, Yohey Suzuki, Mark van Zuilen, Michel Viso

Publikováno v: Astrobiology, 22(S1), S186-S216. Mary Ann Liebert Inc.
S216
S186
Astrobiology (1531-1074) (Mary Ann Liebert, Inc), 2022-06, Vol. 22, N. Suppl.1, P. S186-S216

The Committee on Space Research (COSPAR) Sample Safety Assessment Framework (SSAF) has been developed by a COSPAR appointed Working Group. The objective of the sample safety assessment would be to evaluate whether samples returned from Mars could be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9346ba0d2a4bd49268bf21d253a015cd
https://pure.eur.nl/en/publications/b8a795a4-3f9f-4600-a6b9-82f5aaf4b7ee