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The colonization of the oceans by calcifying pelagic algae
- Source :
- Biogeosciences, Biogeosciences, European Geosciences Union, 2019, 16 (12), pp.2501-2510. ⟨10.5194/bg-16-2501-2019⟩, Biogeosciences, 2019, 16 (12), pp.2501-2510. ⟨10.5194/bg-16-2501-2019⟩, Biogeosciences 12 (16), 1-10. (2019), Biogeosciences, Vol 16, Pp 2501-2510 (2019)
- Publication Year :
- 2019
-
Abstract
- The rise of calcareous nannoplankton in Mesozoic oceans has deeply impacted ocean chemistry and contributed to shaping modern oceans. Nevertheless, the calcareous nannoplankton colonization of past marine environments remains poorly understood. Based on an extensive compilation of published and unpublished data, we show that their accumulation rates in sediments increased from the Early Jurassic (∼200 Ma) to the Early Cretaceous (∼120 Ma), although these algae diversified up to the end of the Mesozoic (66 Ma). After the middle Eocene (∼45 Ma), a decoupling occurred between accumulation rates, diversity and coccolith size. The time series analyzed points toward a three-phase evolutionary dynamic. An invasion phase of the open-ocean realms was followed by a specialization phase occurring along with taxonomic diversification, ended by an establishment phase where a few small-sized species dominated. The current hegemony of calcareous nannoplankton in the world ocean results from a long-term and complex evolutionary history shaped by ecological interactions and abiotic forcing.
- Subjects :
- 010504 meteorology & atmospheric sciences
lcsh:Life
calcareous nannoplankton evolution
010502 geochemistry & geophysics
01 natural sciences
Coccolith
Algae
lcsh:QH540-549.5
Phytoplankton
phytoplankton
size changes
Colonization
Mesozoic
14. Life underwater
Ecology, Evolution, Behavior and Systematics
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
0105 earth and related environmental sciences
Earth-Surface Processes
biology
Ecology
[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]
lcsh:QE1-996.5
Pelagic zone
biology.organism_classification
Cretaceous
lcsh:Geology
lcsh:QH501-531
[SDE]Environmental Sciences
lcsh:Ecology
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Calcareous
Geology
Subjects
Details
- Language :
- English
- ISSN :
- 17264189 and 17264170
- Database :
- OpenAIRE
- Journal :
- Biogeosciences, Biogeosciences, European Geosciences Union, 2019, 16 (12), pp.2501-2510. ⟨10.5194/bg-16-2501-2019⟩, Biogeosciences, 2019, 16 (12), pp.2501-2510. ⟨10.5194/bg-16-2501-2019⟩, Biogeosciences 12 (16), 1-10. (2019), Biogeosciences, Vol 16, Pp 2501-2510 (2019)
- Accession number :
- edsair.doi.dedup.....0218f889955bf3c697b2bd9f2168e53a