Articles | Volume 45, issue 1
https://doi.org/10.5194/jm-45-195-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-45-195-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Reassessment of the global distribution and diversity of modern planktonic foraminifera from the FORCIS database
Sonia Chaabane
CORRESPONDING AUTHOR
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
Department of Climate Geochemistry, Max Planck Institute for Chemistry, Mainz, Germany
Fondation pour la recherche sur la biodiversité (FRB-CESAB), Montpellier, France
Ralf Schiebel
Department of Climate Geochemistry, Max Planck Institute for Chemistry, Mainz, Germany
Julie Meilland
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
MARUM, Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
Geert-Jan A. Brummer
NIOZ, Royal Netherlands Institute for Sea Research, Department of Ocean Systems, Texel, the Netherlands
P. Graham Mortyn
Universitat Autònoma de Barcelona, ICTA and Dept. of Geography, Barcelona, Spain
Olivier Sulpis
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
Thomas B. Chalk
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
Xavier Giraud
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
Helene Howa
LPG-BIAF, UMR-CNRS 6112, University of Angers, Angers, France
Azumi Kuroyanagi
Tohoku University Museum, Tohoku University, Tohoku, Japan
Gregory Beaugrand
Université Littoral Côte d'Opale, Univ. Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, Wimereux, France
Thibault de Garidel-Thoron
Aix-Marseille Université, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
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Anne L. Kruijt, Robin van Dijk, Olivier Sulpis, Luc Beaufort, Guillaume Lassus, Geert-Jan Brummer, A. Daniëlle van der Burg, Ben A. Cala, Yasmina Ourradi, Katja T. C. A. Peijnenburg, Matthew P. Humphreys, Sonia Chaabane, Appy Sluijs, and Jack J. Middelburg
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Franziska Tell, Lukas Jonkers, Julie Meilland, and Michal Kucera
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This study analyses the production of calcite shells formed by one of the main Arctic pelagic calcifiers, the foraminifera N. pachyderma. Using vertically resolved profiles of shell concentration, size and weight, we show that calcification occurs throughout the upper 300 m with an average production flux below the calcification zone of 8 mg CaCO3 m−2 d−1 representing 23 % of the total pelagic biogenic carbonate production. The production flux is attenuated in the twilight zone by dissolution.
Geert-Jan A. Brummer and Michal Kučera
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Olivier Sulpis, Matthew P. Humphreys, Monica M. Wilhelmus, Dustin Carroll, William M. Berelson, Dimitris Menemenlis, Jack J. Middelburg, and Jess F. Adkins
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A quarter of the surface of the Earth is covered by marine sediments rich in calcium carbonates, and their dissolution acts as a giant antacid tablet protecting the ocean against human-made acidification caused by massive CO2 emissions. Here, we present a new model of sediment chemistry that incorporates the latest experimental findings on calcium carbonate dissolution kinetics. This model can be used to predict how marine sediments evolve through time in response to environmental perturbations.
Lukas Jonkers, Geert-Jan A. Brummer, Julie Meilland, Jeroen Groeneveld, and Michal Kucera
Clim. Past, 18, 89–101, https://doi.org/10.5194/cp-18-89-2022, https://doi.org/10.5194/cp-18-89-2022, 2022
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The variability in the geochemistry among individual foraminifera is used to reconstruct seasonal to interannual climate variability. This method requires that each foraminifera shell accurately records environmental conditions, which we test here using a sediment trap time series. Even in the absence of environmental variability, planktonic foraminifera display variability in their stable isotope ratios that needs to be considered in the interpretation of individual foraminifera data.
Julie Meilland, Michael Siccha, Maike Kaffenberger, Jelle Bijma, and Michal Kucera
Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, https://doi.org/10.5194/bg-18-5789-2021, 2021
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Planktonic foraminifera population dynamics has long been assumed to be controlled by synchronous reproduction and ontogenetic vertical migration (OVM). Due to contradictory observations, this concept became controversial. We here test it in the Atlantic ocean for four species of foraminifera representing the main clades. Our observations support the existence of synchronised reproduction and OVM but show that more than half of the population does not follow the canonical trajectory.
Aleix Cortina-Guerra, Juan José Gomez-Navarro, Belen Martrat, Juan Pedro Montávez, Alessandro Incarbona, Joan O. Grimalt, Marie-Alexandrine Sicre, and P. Graham Mortyn
Clim. Past, 17, 1523–1532, https://doi.org/10.5194/cp-17-1523-2021, https://doi.org/10.5194/cp-17-1523-2021, 2021
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During late 20th century a singular Mediterranean circulation episode called the Eastern Mediterranean Transient (EMT) event occurred. It involved changes on the seawater physical and biogeochemical properties, which can impact areas broadly. Here, using paleosimulations for the last 1000 years we found that the East Atlantic/Western Russian atmospheric mode was the main driver of the EMT-type events in the past, and enhancement of this mode was coetaneous with low solar insolation.
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Short summary
Using the FORCIS database, we mapped the distribution of planktonic goraminifera that record past ocean conditions. Our study reveals that these species mostly inhabit the upper ocean and thrive in waters ranging from −2 °C to over 31 °C. Their range is shifting, with species once limited to warm regions now appearing in cooler areas and smaller species increasing in number. This work refines our view of their biogeography and how climate change is reshaping ocean life.
Using the FORCIS database, we mapped the distribution of planktonic goraminifera that record...