Article
Ecology
Lorna E. Kearns, Steven M. Bohaty, K. M. Edgar, Sandra Nogue, Thomas H. G. Ezard
Summary: The study on the planktonic foraminifera genus Subbotina reveals that the species survived well in a dynamically changing climate period, with its trait plasticity and wider ecological niche supporting a generalist survival strategy. Individual resolved oxygen isotopes were used to track depth occupancy shifts during climatic upheaval, indicating a lack of contemporaneous morphological response in this generalist genus. New imaging measurement technologies offer potential for gathering more informative morphological traits for functional analysis.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Geochemistry & Geophysics
Marion Peral, Franck Bassinot, Mathieu Daeron, Dominique Blamart, Jerome Bonnin, Frans Jorissen, Catherine Kissel, Elisabeth Michel, Claire Waelbroeck, Helene Rebaubier, William R. Gray
Summary: Assuming independence of foraminiferal A47 values from seawater salinity and pH, this study investigates the potential of using Mg/Ca, δ18O, and A47 values to reconstruct temperature, salinity/δ18O(sw), and pH signals. The results show good agreement between Mg/Ca and A47 paleothermometers after correction for salinity and pH, indicating the independence of A47 from these factors. However, the uncertainties in A47 temperatures still limit the reconstruction of pH and δ18O(sw) from the combination of Mg/Ca, δ18O, and A47. Disagreements between Mg/Ca and A47 values in G. bulloides persist even after correction for vital, salinity, and pH effects, suggesting the influence of other processes on Mg/Ca in this species.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geology
David J. King, Bridget S. Wade, C. Giles Miller
Summary: Planktonic foraminifera exhibit either sinistral or dextral coiling. The prevalence of coiling direction can change within morphospecies over time. Despite known preferential coiling directions in many species, no coiling shifts have been applied beyond the late Miocene. This study investigates selected Miocene species and confirms a coiling shift in the mid Miocene at approximately 15 Ma.
NEWSLETTERS ON STRATIGRAPHY
(2023)
Article
Ecology
Anieke Brombacher, Paul A. Wilson, Ian Bailey, Thomas H. G. Ezard
Summary: This study investigates the trait covariation patterns of two planktonic foraminifera species in different environments and populations. The results show a stable spatial signal but inconsistent temporal changes, suggesting that individual populations cannot be used to predict the response of others.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Geosciences, Multidisciplinary
Wei Shen, Shuqing Qiao, Rongtao Sun, Zhoutian He, Bin Wu, Lina Jin, Liang Chen, Zhengxin Yin, Chendong Ge, Xuefa Shi, Jie Sheng
Summary: This study focuses on the distribution and environmental implications of foraminifera in surface sediments in the equatorial western Indian Ocean. The planktonic foraminifera are mainly influenced by depth-controlled dissolution rate of carbonate, temperature, and salinity, while the benthic foraminifera are related to oxygen content and water mass. The results reveal differences in productivity between the western and eastern regions of the Central Indian Ridge.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
Keiran A. Swart, Sergey Oleynik, Alfredo Martinez-Garcia, Gerald H. Haug, Daniel M. Sigman
Summary: By using foraminifera-bound organic matter (FBOM) delta C-13 as a potential proxy for dissolved CO2 concentration, researchers have achieved higher precision testing with new protocols and instruments. They found an inverse correlation between FBOM-delta C-13 and surface water [CO2(aq)], indicating the potential for FBOM-delta C-13 to serve as a paleoceanographic proxy for atmospheric pCO2.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Environmental Sciences
Thibault de Garidel-Thoron, Sonia Chaabane, Xavier Giraud, Julie Meilland, Lukas Jonkers, Michal Kucera, Geert-Jan A. Brummer, Maria Grigoratou, Fanny M. Monteiro, Mattia Greco, P. Graham Mortyn, Azumi Kuroyanagi, Helene Howa, Gregory Beaugrand, Ralf Schiebel
Summary: Planktonic Foraminifera are marine protozoa that secrete calcareous shells, which provide a geological record of past changes in their community structure. The FORCIS project aims to create a global database to analyze the distribution and turnover of these organisms.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Eleanor H. John, Philip T. Staudigel, Benjamin Buse, Caroline H. Lear, Paul N. Pearson, Sophie M. Slater
Summary: This study used EPMA to investigate the distribution of magnesium in the fossil tests of two extinct species of foraminifera, and found that the distribution patterns are similar to those of modern species, supporting the application of Mg/Ca paleothermometry. However, it also highlights the importance of rigorous assessments of intra-test magnesium variability when using microanalytical techniques.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2023)
Article
Food Science & Technology
Tomohiro Nishimura, J. Sam Murray, Michael J. Boundy, Muharrem Balci, Holly A. Bowers, Kirsty F. Smith, D. Tim Harwood, Lesley L. Rhodes
Summary: This study investigated the diversity and toxin production of Pseudo-nitzschia species in New Zealand coastal waters, identifying two species as primary producers of domoic acid and its isomers. It also provided the first geographical distribution record of certain Pseudo-nitzschia species in the region.
Article
Biodiversity Conservation
Mattia Greco, Kirstin Werner, Katarzyna Zamelczyk, Tine L. Rasmussen, Michal Kucera
Summary: The Fram Strait is experiencing significant changes in its marine biota due to increasing advection of Atlantic species, as observed in plankton profiles collected over the past three decades. The trend towards more Atlantic species is independent of local environmental conditions, indicating higher production of these species in the Nordic Seas and their subsequent transport into the Fram Strait. Additionally, ongoing sea-ice export from the Arctic has so far buffered larger plankton transformation, but a decrease in sea-ice export could lead to rapid restructuring of the pelagic community in the Arctic gateway region.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Geochemistry & Geophysics
Zhoufei Yu, Baohua Li, Hongliang Li, Jingling Zhang, Jianfang Chen
Summary: This study investigates the seasonal calcification depth variations of four common species of planktonic foraminifera by analyzing their stable oxygen isotope composition. The findings show that the depth habitat change affects the calcite 818O on seasonal timescales, and the seasonal depth habitat follows the isothermals. The research also proposes a new approach for quantifying the effect of seasonal calcification depth changes on the 818O signature of planktonic foraminiferal tests.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Plant Sciences
Ya-Ping Lin, Tien-Hor Wu, Yan-Kuang Chan, Maarten van Zonneveld, Roland Schafleitner
Summary: Amaranth species are promising vegetables to adapt to global climate change due to their high vigor, nutrient richness, drought, and salinity tolerance. In this study, the taxonomic annotation of Amaranthus germplasm was verified using genotypic data, and an interspecific GWAS revealed genes related to flowering time. This research highlights the potential of using genotypic data for species demarcation and targeted introduction of specific genetic variants in different Amaranthus species.
Article
Geology
Antonio Enrique Sayao Sanjines, Marta Claudia Viviers, Denize Santos Costa, Geise de Santana dos Anjos Zerfass, Gerhard Beurlen, Oscar Strohschoen Jr
Summary: This study describes and interprets the upper Aptian planktonic foraminifera assemblages in the post-salt section of the Santos, Campos, and Espirito Santo Brazilian marginal basins, providing insights into biostratigraphy and relative ages. The analysis of material from 26 wells reveals that the marine sedimentary rocks deposited above the evaporitic sequence are of upper Aptian age. This reassessment of the biostratigraphic framework suggests an earlier establishment of a marine environment in the studied basins, contributing to the understanding of early South Atlantic Ocean geological evolution.
CRETACEOUS RESEARCH
(2022)
Article
Environmental Sciences
Marta M. Rufino, Emilia Salgueiro, Antje A. H. L. Voelker, Paulo S. Polito, Pedro A. Cermeno, Fatima Abrantes
Summary: This study examines the diversity distribution of planktonic foraminifera in the Atlantic Ocean and finds that sea surface temperature, chlorophyll-a, and ocean kinetic energy are the main environmental drivers shaping their diversity. Additionally, the study redefines the biogeographic zones in the Atlantic Ocean and identifies important marine gradients.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biodiversity Conservation
Maria Grigoratou, Fanny M. Monteiro, Jamie D. Wilson, Andy Ridgwell, Daniela N. Schmidt
Summary: Research indicates that the ecology and global distribution of non-spinose planktonic foraminifera may be affected by future climate change, with increases projected in subpolar regions of the North Atlantic and the Southern Ocean, and decreases elsewhere.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
D. M. Thompson, J. L. Conroy, B. L. Konecky, S. Stevenson, K. L. DeLong, N. McKay, E. Reed, L. Jonkers, M. Carre
Summary: Stable oxygen isotopic ratios in corals can be used to reconstruct past climate variability. The contribution of seawater δ18O to coral δ18O variability is up to 89% in the Western Pacific Warm Pool. However, uncertainty in the δ18O(sw)-salinity relationship influences the inferred salinity variability.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Thibault de Garidel-Thoron, Sonia Chaabane, Xavier Giraud, Julie Meilland, Lukas Jonkers, Michal Kucera, Geert-Jan A. Brummer, Maria Grigoratou, Fanny M. Monteiro, Mattia Greco, P. Graham Mortyn, Azumi Kuroyanagi, Helene Howa, Gregory Beaugrand, Ralf Schiebel
Summary: Planktonic Foraminifera are marine protozoa that secrete calcareous shells, which provide a geological record of past changes in their community structure. The FORCIS project aims to create a global database to analyze the distribution and turnover of these organisms.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Olivier Cartapanis, Lukas Jonkers, Paola Moffa-Sanchez, Samuel L. Jaccard, Anne de Vernal
Summary: Analysis of a large database of Holocene temperature time series challenges the concept of a globally synchronous Holocene Thermal Maximum. The discrepancies between climate reconstructions and model simulations highlight the need for reevaluation of climate models and proxy temperature records. The heterogeneous response to climate forcing indicates the lack of globally synchronous HTM.
NATURE COMMUNICATIONS
(2022)
Article
Geochemistry & Geophysics
Michael B. Adebayo, Clara T. Bolton, Ross Marchant, Franck Bassinot, Sandrine Conrod, Thibault de Garidel-Thoron
Summary: This study used a tropical Indian Ocean core-top data set to test the Optimum size-hypothesis and investigate the relationships between planktonic foraminiferal size and environmental parameters. Results showed that most planktonic foraminifera species have unimodal size frequency distributions, with some larger species showing multimodal distributions. The study also revealed that relative abundance is not a good predictor of species' optima and within-species size response to environmental parameters is species-specific, with carbonate ion concentration, temperature, and salinity being primary drivers.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Paleontology
Lucia A. Azibeiro, Michal Kucera, Lukas Jonkers, Angela Cloke-Hayes, Francisco J. Sierro
Summary: The composition of planktonic foraminiferal assemblages in the surface sediments of the Mediterranean Sea varies along two environmental gradients, which are influenced by nutrient availability in deep waters and differences in nutrient advection caused by density stratification. Environmental factors such as temperature, salinity, nutrient concentrations, and density gradients explain a significant portion of the variance in the composition of the assemblages. This study suggests that sea surface temperature plays a secondary role in the Mediterranean Sea compared to other environmental variables.
MARINE MICROPALEONTOLOGY
(2023)
Article
Environmental Sciences
Marc Tedetti, Jacek Tronczynski, Francois Carlotti, Marc Pagano, Sana Ben Ismail, Cherif Sammari, Malika Bel Hassen, Karine Desboeufs, Charlotte Poindron, Sandrine Chifflet, Amel Bellaaj Zouari, Moufida Abdennadher, Sirine Amri, Daniela Banaru, Lotfi Ben Abdallah, Nagib Bhairy, Ismail Boudriga, Aude Bourin, Christophe Brach-Papa, Nicolas Briant, Lea Cabrol, Cristele Chevalier, Lassaad Chouba, Sylvain Coudray, Mohamed Nejib Daly Yahia, Thibault de Garidel-Thoron, Aurelie Dufour, Jean-Claude Dutay, Boris Espinasse, Pamela Fierro-Gonzalez, Michel Fornier, Nicole Garcia, Franck Giner, Catherine Guigue, Loic Guilloux, Asma Hamza, Lars-Eric Heimbuerger-Boavida, Stephanic Jacquet, Joel Knoery, Rim Lajnef, Nouha Makhlouf Belkahia, Deny Malengros, Pauline L. Martinot, Anthony Bosse, Jean-Charles Mazur, Marouan Meddeb, Benjamin Misson, Olivier Pringault, Marianne Quemeneur, Olivier Radakovitch, Patrick Raimbault, Christophe Ravel, Vincent Rossi, Chaimaa Rwawi, Asma Sakka Hlaili, Javier Angel Tesan-Onrubia, Bastien Thomas, Melilotus Thyssen, Noureddine Zaaboub, Cedric Garnier
Summary: This paper discusses the experiential feedback and challenges related to the MERITEHIPPOCAMPE cruise in the Mediterranean Sea in spring 2019. The cruise proposed an innovative approach to investigate the accumulation and transfer of contaminants within planktonic food webs. The paper provides detailed information on the cruise operations, including sampling stations, strategy, and parameters analyzed, as well as the environmental conditions during the campaign. Additionally, it presents the articles produced based on the cruise work.
MARINE POLLUTION BULLETIN
(2023)
Article
Multidisciplinary Sciences
Mattia Greco, Raphael Morard, Kate Darling, Michal Kucera
Summary: In this study, the intragenomic variability in 33 species of planktonic foraminifera was investigated, and it was found that polymorphisms are common among these species but vary significantly among different clades. Molecular simulations showed that most of the mutations are located in paired regions that do not affect the secondary structure of the SSU fragment. By mapping the number of polymorphic sites on the phylogeny of the clades, the evolution and potential sources of intragenomic variability in planktonic foraminifera were discussed, linking this trait to the distinctive nuclear and genomic dynamics of this microbial group.
Article
Multidisciplinary Sciences
Sonia Chaabane, Thibault de Garidel-Thoron, Xavier Giraud, Ralf Schiebel, Gregory Beaugrand, Geert-Jan Brummer, Nicolas Casajus, Mattia Greco, Maria Grigoratou, Helene Howa, Lukas Jonkers, Michal Kucera, Azumi Kuroyanagi, Julie Meilland, Fanny Monteiro, Graham Mortyn, Ahuva Almogi-Labin, Hirofumi Asahi, Simona Avnaim-Katav, Franck Bassinot, Catherine V. Davis, David B. Field, Ivan Hernandez-Almeida, Barak Herut, Graham Hosie, Will Howard, Anna Jentzen, David G. Johns, Lloyd Keigwin, John Kitchener, Karen E. Kohfeld, Douglas V. O. Lessa, Clara Manno, Margarita Marchant, Siri Ofstad, Joseph D. Ortiz, Alexandra Post, Andres Rigual-Hernandez, Marina C. Rillo, Karen Robinson, Takuya Sagawa, Francisco Sierro, Kunio T. Takahashi, Adi Torfstein, Igor Venancio, Makoto Yamasaki, Patrizia Ziveri
Summary: Planktonic Foraminifera, with their excellent fossil record, serve as unique paleo-environmental indicators. Their distribution and diversity are influenced by various environmental factors, including anthropogenic ocean and climate change. However, the historical changes in their distribution at the global scale have not been thoroughly assessed until now. In this study, the FORCIS database is presented, which includes data on the diversity and distribution of Foraminifera in the global ocean from 1910 to 2018, incorporating both published and unpublished data.
Review
Environmental Sciences
Ngoc-Loi Nguyen, Dhanushka Devendra, Natalia Szymanska, Mattia Greco, Ines Barrenechea Angeles, Agnes K. M. Weiner, Jessica Louise Ray, Tristan Cordier, Stijn De Schepper, Jan Pawlowski, Joanna Pawlowska
Summary: Sedimentary ancient DNA (sedaDNA) offers a novel way to reconstruct the history of marine ecosystems, expanding the range of studied taxa and providing a holistic overview of past biodiversity. However, the emerging approach of marine sedaDNA research faces challenges and needs careful assessment of its ability to recover reliable past biodiversity information.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Ecology
Agnes K. M. Weiner, Taylor Sehein, Auden Cote-L'Heureux, Robin S. Sleith, Mattia Greco, Clara Malekshahi, Chase Ryan-Embry, Naomi Ostriker, Laura A. Katz
Summary: The study investigates the population genetics of uncultivable heterotrophic protists using transcriptomics data. The researchers analyze multiple genes from two morphospecies of testate amoebae and confirm the existence of cryptic species with evidence of recombination and high levels of divergence. However, the total levels of genetic diversity within cryptic species are low, suggesting small effective population sizes and efficient modes of dispersal.
Article
Ecology
Jansen Smith, Marina C. C. Rillo, Adam T. Kocsis, Maria Dornelas, David Fastovich, Huai-Hsuan M. Huang, Lukas Jonkers, Wolfgang Kiessling, Qijian Li, Lee Hsiang Liow, Miranda Margulis-Ohnuma, Stephen Meyers, Lin Na, Amelia M. M. Penny, Kate Pippenger, Johan Renaudie, Erin E. E. Saupe, Manuel J. J. Steinbauer, Mauro Sugawara, Adam Tomasovych, John W. W. Williams, Moriaki Yasuhara, Seth Finnegan, Pincelli M. M. Hull
Summary: BioDeepTime is a database that collects time series data of terrestrial and aquatic community compositions, facilitating research on community dynamics and responses to environmental perturbations. It includes time series data from various spatial and temporal scales, ranging from present-day to millions of years ago, covering diverse taxa and measurement variables.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2023)
Article
Marine & Freshwater Biology
Mattia Greco, Adele Westgard, Freya E. Sykes, Mohamed M. Ezat, Julie Meilland
Summary: This study identified previously unknown ectoplasmic and cytoplasmic projections in three species of planktonic foraminifera thriving in polar and subpolar marine environments. These structures may play a significant role in the trophic strategies of cold-water planktonic foraminifera, but further research is needed to fully understand their function and ecological significance.
JOURNAL OF PLANKTON RESEARCH
(2023)
Article
Multidisciplinary Sciences
Matthias Prange, Lukas Jonkers, Ute Merkel, Michael Schulz, Pepijn Bakker
Summary: Paleoclimate proxy records from the North Atlantic region show that temperature variability during the Last Glacial Maximum (LGM) was significantly higher than the current interglacial period. The causes for this increased variability remain unknown. Using simulations and proxy records, researchers have identified an oscillatory mode of multicentennial variability associated with the Atlantic meridional overturning circulation and salinity distribution. This self-sustained mode, amplified by sea-ice feedbacks, induces maximum surface temperature variability in the subpolar North Atlantic region. This multicentennial oscillation is distinct from Dansgaard-Oeschger variability and only emerges under full LGM climate forcing. The potential for multicentennial modes of variability to respond to changing climate forcing may have implications for future climate change.
