Tais Wittchen Dahl

Tais Wittchen Dahl

Associate Professor

Member of:


    1. Published

      Precise and accurate δ13C analysis of rock samples using Flash Combustion–Cavity Ring Down Laser Spectroscopy

      Balslev-Clausen, D. M., Dahl, Tais Wittchen, Saad, N. & Rosing, Minik Thorleif, 1 Apr 2013, In: Journal of Analytical Atomic Spectrometry. 28, 4, p. 516-523 8 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    2. Published

      Bioturbation and directionality in Earth's carbon isotope record across the Neoproterozoic-Cambrian transition

      Boyle, R. A., Dahl, Tais Wittchen, Bjerrum, Christian J. & Canfield, D. E., 2018, In: Geobiology. 16, 3, p. 252-278 27 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    3. Published

      Stabilization of the coupled oxygen and phosphorus cycles by the evolution of bioturbation

      Boyle, R., Dahl, Tais Wittchen, Dale, A. W., Shields-Zhou, G. A., Zhu, M., Brasier, M. D., Canfield, D. E. & Lenton, T. M., 2014, In: Nature Geoscience. 7, 9, p. 671-676 6 p.

      Research output: Contribution to journalLetterResearchpeer-review

    4. Published

      Comparison of Ediacaran platform and slope δ238U records in South China: Implications for global-ocean oxygenation and the origin of the Shuram Excursion

      Cao, M., Daines, S. J., Lenton, T. M., Cui, H., Algeo, T. J., Dahl, Tais Wittchen, Shi, W., Chen, Z. Q., Anbar, A. & Zhou, Y. Q., 2020, In: Geochimica et Cosmochimica Acta. 287, p. 111-124 14 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    5. Published

      Evidence of molybdenum association with particulate organic matter under sulfidic conditions

      Dahl, Tais Wittchen, Chappaz, A., Hoek, J. B., McKenzie, C. J., Svane, S. & Canfield, D. E., 2017, In: Geobiology. 15, 2, p. 311-323 13 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    6. Published

      Sulfidic anoxia in the oceans during the Late Ordovician mass extinctions – insights from molybdenum and uranium isotopic global redox proxies

      Dahl, Tais Wittchen, Hammarlund, E. U., Rasmussen, Christian Mac Ørum, Bond, D. P. G. & Canfield, D. E., 2021, In: Earth-Science Reviews. 220, 14 p., 103748.

      Research output: Contribution to journalReviewResearchpeer-review

    7. Do large predatory fish track ocean oxygenation?

      Dahl, Tais Wittchen & Hammarlund, E. U., 2011, In: Communicative & Integrative Biology. 4, 1, p. 92-94 3 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    8. Published

      Atmosphere-ocean oxygen and productivity dynamics during early animal radiations

      Dahl, Tais Wittchen, Connelly, James, Li, D., Kouchinsky, A., Gill, B. C., Porter, S., Maloof, A. C. & Bizzarro, Martin, 2019, In: Proceedings of the National Academy of Sciences of the United States of America. 116, 39, p. 19352-19361 10 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    9. Published

      Reorganisation of Earth's biogeochemical cycles briefly oxygenated the oceans 520 Myr ago

      Dahl, Tais Wittchen, Connelly, James, Kouchinsky, A., Gill, B. C., Månsson, S. F. & Bizzarro, Martin, 15 Jun 2017, In: Geochemical Perspectives Letters. 3, 2, p. 210-220 11 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    10. Published

      Molybdenum isotope fractionation and speciation in a euxinic lake—Testing ways to discern isotope fractionation processes in a sulfidic setting

      Dahl, Tais Wittchen & Wirth, S. B., 5 Jun 2017, In: Chemical Geology. 460, p. 84-92 9 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    11. Published

      Low atmospheric CO2 levels before the rise of forested ecosystems

      Dahl, Tais Wittchen, Harding, Magnus August Ravn, Brugger, J., Feulner, G., Norrman, K., Lomax, B. H. & Junium, C. K., 2022, In: Nature Communications. 13, 10 p., 7616.

      Research output: Contribution to journalJournal articleResearchpeer-review

    12. Published

      Molybdenum evidence for expansive sulfidic water masses in similar ∼ 750 Ma oceans

      Dahl, Tais Wittchen, Canfield, D. E., Rosing, Minik Thorleif, Frei, Robert, Gordon, G. W., Knoll, A. H. & Anbar, A. D., 2011, In: Earth and Planetary Science Letters. 311, 3-4, p. 264-274

      Research output: Contribution to journalJournal articleResearchpeer-review

    13. Published

      The behavior of molybdenum and its isotopes across the chemocline and in the sediments of sulfidic Lake Cadagno, Switzerland

      Dahl, Tais Wittchen, Anbar, A. D., Gordon, G. W., Rosing, Minik Thorleif, Frei, Robert & Canfield, D. E., Jan 2010, In: Geochimica et Cosmochimica Acta. 74, 1, p. 144-163 20 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    14. Published

      Devonian rise in atmospheric oxygen correlated to the radiations of terrestrial plants and large predatory fish

      Dahl, Tais Wittchen, Hammarlund, E. U., Anbar, A. D., Bond, D. P. G., Gill, B. C., Gordon, G. W., Knoll, A. H., Nielsen, Arne Thorshøj, Schovsbo, N. H. & Canfield, D. E., 2010, In: National Academy of Sciences. Proceedings. 107, 42, p. 17911-17915 5 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    15. Published

      Land plant evolution and global erosion rates: Reply to Neil S. Davies and William J. McMahon

      Dahl, Tais Wittchen & Arens, S. K. M., 2021, In: Chemical Geology. 573, 2 p., 120167.

      Research output: Contribution to journalComment/debateResearchpeer-review

    16. Published

      Land plant evolution and global erosion rates: Reply to Neil S. Davies and William J. McMahon

      Dahl, Tais Wittchen & Arens, S. K. M., 5 Jul 2021, In: Chemical Geology. 573, 120167.

      Research output: Contribution to journalComment/debateResearchpeer-review

    17. Published

      Tracing euxinia by molybdenum concentrations in sediments using handheld X-ray fluorescence spectroscopy (HHXRF)

      Dahl, Tais Wittchen, Ruhl, M., Hammarlund, E. U., Canfield, D. E., Rosing, Minik Thorleif & Bjerrum, Christian J., 18 Dec 2013, In: Chemical Geology. 360-361, p. 241-251 11 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    18. Molybdenum reduction in a sulfidic lake: evidence from X-ray absorption fine–structure spectroscopy and implications for the Mo paleoproxy

      Dahl, Tais Wittchen, Chappaz, A., Fitts, J. P. & Lyons, T. W., Feb 2013, In: Geochimica et Cosmochimica Acta. 103, p. 213-231 19 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    19. Published

      The impacts of land plant evolution on Earth's climate and oxygenation state – An interdisciplinary review

      Dahl, Tais Wittchen & Arens, S. K. M., 5 Aug 2020, In: Chemical Geology. 547, 25 p., 119665.

      Research output: Contribution to journalJournal articleResearchpeer-review

    20. The human impact on natural rock reserves using basalt, anorthosite, and carbonates as raw materials in insulation products

      Dahl, Tais Wittchen, Clausen, A. U. & Hansen, P. B., 2011, In: International Geology Review. 53, p. 894-904

      Research output: Contribution to journalJournal articleResearch

    21. Published

      Identifying remnants of early Earth

      Dahl, Tais Wittchen, 2016, In: Science. 352, 6287, p. 768-769 2 p.

      Research output: Contribution to journalJournal articleResearchpeer-review

    22. Turbulent Mixing during Planet Accretion and Core Formation: Cand. Sc. Thesis, geophysics, University of Copenhagen

      Dahl, Tais Wittchen, 2005, Turbulent Mixing during Planet Accretion and Core Formation.

      Research output: Chapter in Book/Report/Conference proceedingReport chapterResearch

    23. Planetkort: - et nervepirrende undervisningsspil om solsystemet

      Dahl, Tais Wittchen, 2007

      Research output: Non-textual form2D/3D (psysical products)Education

    24. Published

      Molybdenum isotope variations in a redox-stratified lake: Removal mechanism and preservation in euxinic sediments

      Dahl, Tais Wittchen, Anbar, A. D., Gordon, G. W., Rosing, Minik Thorleif, Frei, Robert & Canfield, D. E., 2008, Geochim. Cosmochim. Acta,. Vol. 72/12S. p. A194

      Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

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