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Global record of “ghost” nannofossils reveals plankton resilience to high CO2 and warming
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0003-1766-3516
Department of Earth Sciences, University College London,.
Department of Earth Sciences, The Natural History Museum, London.
4Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Firenze, Italy..
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2022 (English)In: Science, ISSN 0036-8075, Vol. 376, no 6595, p. 853-856Article in journal (Refereed) Published
Abstract [en]

Predictions of how marine calcifying organisms will respond to climate change rely heavily on the fossilrecord of nannoplankton. Declines in calcium carbonate (CaCO3) and nannofossil abundance throughseveral past global warming events have been interpreted as biocalcification crises caused by oceanacidification and related factors. We present a global record of imprint—or“ghost”—nannofossils thatcontradicts this view, revealing exquisitely preserved nannoplankton throughout an inferred Jurassicbiocalcification crisis. Imprints from two further Cretaceous warming events confirm that the fossilrecords of these intervals have been strongly distorted by CaCO3dissolution. Although the rapidity ofpresent-day climate change exceeds the temporal resolution of most fossil records, complicatingdirect comparison with past warming events, our findings demonstrate that nannoplankton were moreresilient to past events than traditional fossil evidence suggests.

Place, publisher, year, edition, pages
Washington D.C., 2022. Vol. 376, no 6595, p. 853-856
Keywords [en]
Nannofossils, coccoliths, anoxic events, Jurassic, Toarcian, diagenesis
National Category
Other Earth and Related Environmental Sciences
Research subject
The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-4879DOI: 10.1126/science.abm7330OAI: oai:DiVA.org:nrm-4879DiVA, id: diva2:1714457
Funder
Swedish Research Council, 2019-04524Swedish Research Council, 2019-4061Wenner-Gren Foundations, UPD2018-0114Carl Tryggers foundation , 19:380Knut and Alice Wallenberg Foundation, 2020.0145NERC - the Natural Environment Research Council, NE/I005641/1
Note

This work was supported by Wenner-Gren Foundation grant UPD2018-0114 (S.M.S. and V.V.); Swedish Research Council grants VR 2019-04524 (S.M.S.) and VR 2019-4061 (V.V.); Carl Tryggers Foundation grant 19:380 (V.V.); Knut and Alice Wallenberg Foundationgrant KAW 2020.0145 (V.V.); Natural Environment Research Council grant NE/I005641/1 (R.J.T.); Lund University Carbon Cycle Centre(V.V.); Bolin Centre for Climate Research (S.M.S.); and The Great Britain Sasakawa Foundation 4390 (S.D.).

Available from: 2022-11-29 Created: 2022-11-29Bibliographically approved

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Publisher's full texthttps://www.science.org/doi/epdf/10.1126/science.abm7330

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