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
Geography, Physical
Gabriela J. Arreguin-Rodriguez, James S. K. Barnet, Melanie J. Leng, Kate Littler, Dick Kroon, Daniela N. Schmidt, Ellen Thomas, Laia Alegret
Summary: The Paleogene era experienced disruptions in the global carbon cycle, including transient global warming events. The Dan-C2 event was one of the oldest eccentricity-linked carbon cycle disturbances, different from other hyperthermals in terms of not showing bottom water warming. Benthic foraminiferal assemblages at ODP Site 1262 in the South Atlantic Ocean revealed a decrease in diversity before the Dan-C2 event.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Engineering, Marine
Agata Di Stefano, Natale Maria D'Andrea, Salvatore Distefano, Salvatore Urso, Laura Borzi, Niccolo Baldassini, Viviana Barbagallo
Summary: The quantitative analysis of calcareous nannofossil content in the 600 m thick succession at ODP Site 1123 (offshore New Zealand) identified 43 bioevents over the past 20 million years. The correlation with the magnetostratigraphic record provided numerical ages for these horizons. Some previously used marker species were found at ODP Site 1123, while others were absent or had limited applicability. Additional events were found to be useful for biostratigraphic subdivision and correlation. The resulting nannofossil biochronology provides a detailed reference section for the Southern Ocean over the past 20 million years.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
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
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
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)
Review
Geosciences, Multidisciplinary
Felix Gradstein, Anna Waskowska, Larisa Glinskikh
Summary: This passage provides a biochronology of Jurassic planktonic foraminifera, detailing the evolutionary history and characteristics of the three genera within the group. It highlights key stratigraphic events and the survival of only one taxon, likely Gobuligerina oxfordiana, in the Tithonian period.
Article
Chemistry, Multidisciplinary
Roberta D'Onofrio, Amr S. Zaky, Fabrizio Frontalini, Valeria Luciani, Rita Catanzariti, Fabio Francescangeli, Martino Giorgioni, Rodolfo Coccioni, Ercan Ozcan, Luigi Jovane
Summary: This study investigates the impact of global warming on marine biota and environment during the Middle Eocene Climatic Optimum (MECO) period in the Neo-Tethyan geological setting. The research reveals significant changes in marine biota during the MECO warming peak, with some species showing resilience to the perturbation while others experiencing permanent decline. Despite some partial recovery, both biota and environment did not fully return to pre-event conditions after the MECO warming peak.
APPLIED SCIENCES-BASEL
(2021)
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
Engineering, Marine
Stergios D. Zarkogiannis
Summary: This study investigates the physical controls on planktonic foraminifera calcification to approximate the horizontal density gradient in the eastern Atlantic over the last 200,000 years. The results identify weak ocean density gradients during cold intervals of the last two deglaciations, suggesting nearly or completely eliminated meridional circulation, while the interhemispheric Atlantic density differences appear to alleviate with the onset of the last interglacial. The findings confirm the significance of variations in the density of Atlantic surface waters for meridional circulation changes.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Marine & Freshwater Biology
Lauriane Bergeon, Frederic Azemar, Claire Carre, Benedicte Dubillot, Claire Emery, Helene Agogue, Philippe Pineau, Thomas Lacoue-Labarthe, Marc Bouvy, Michele Tackx, Christine Dupuy
Summary: This study investigates the diversity and abundance of planktonic communities in two marshes. It found that the freshwater marsh had higher planktonic diversity than the saltwater marsh. The planktonic communities were dominated by Cryptophyta, nanoflagellates, and Cyanobacteria in both marshes, while the metazooplanktonic communities were characterized by marine copepods and freshwater Cladocerans and Rotifera. Periodic water renewals were the only management action that could potentially affect the seasonal dynamics of planktonic communities.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
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
Geology
Allyson Vigano, Edoardo Dallanave, Laia Alegret, Thomas Westerhold, Rupert Sutherland, Gerald R. Dickens, Cherry Newsam, Claudia Agnini
Summary: This study provides an improved age model for the continuous Eocene-Oligocene transition sedimentary record from the New Caledonia Trough, and offers an independent age calibration for biohorizons in subtropical low-middle latitudes. The results have important implications for paleoceanographic reconstructions.
NEWSLETTERS ON STRATIGRAPHY
(2023)
Article
Environmental Sciences
Stergios D. Zarkogiannis, Shinya Iwasaki, James William Buchanan Rae, Matthew W. Schmidt, P. Graham Mortyn, George Kontakiotis, Jennifer E. Hertzberg, Rosalind E. M. Rickaby
Summary: By studying the shell weight of foraminifera, it was found that foraminifera shells near the equator weigh an average of 1/3 less than those from the middle latitudes, and deep dwelling species have heavier shells than surface-dwelling species, indicating a change in shell weight with depth. The results suggest that the ambient seawater carbonate chemistry does not account for the interspecies difference in shell mass.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geology
Waheed A. Albasrawi, David K. Watkins
Summary: Quantitative analysis of the lower Miocene in Ocean Drilling Program Hole 959A was conducted to document calcareous nannofossil biostratigraphic events. This research identified and tested markers used in current zonation schemes, recognized alternative markers for age boundaries, and statistically examined the most probable order of events in the lower Miocene. The results provided valuable insights for understanding the geologic evolution during this period.
Article
Geography, Physical
Edmundo Camillo, Juliana P. Quadros, Ana Claudia A. Santarosa, Karen B. Costa, Felipe A. L. Toledo
QUATERNARY INTERNATIONAL
(2020)
Article
Geosciences, Multidisciplinary
G. L. Mathias, S. C. Roud, C. M. Chiessi, M. C. Campos, B. B. Dias, T. P. Santos, A. L. S. Albuquerque, F. A. L. Toledo, K. B. Costa, B. A. Maher
Summary: The study reveals that sediments in marine sediment core GL-1090 from the southwestern South Atlantic Ocean are primarily sourced from the Plata River in southeastern South America and transported northward by the Brazilian Coastal Current, with delivery modulated by sea-level oscillations. Terrigenous sediment input significantly increased during periods of low sea level, while variations in biogenic magnetite content following glacial-interglacial cycles were observed based on environmagnetic parameters.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Guilherme A. Pedrao, Karen B. Costa, Felipe A. L. Toledo, Mariana O. Tomazella, Luigi Jovane
Summary: The study confirmed the quality and reliability of XRF measurements of major elements by comparing them with ICP-OES elemental analysis. It showed that XRF analysis using BTX II is a viable, reliable, cheap, rapid, and non-destructive option for obtaining high-resolution elementary ratios and mineralogical downcore results for stratigraphic and paleoceanographic interpretations.
APPLIED SCIENCES-BASEL
(2021)
Article
Geosciences, Multidisciplinary
A. Gonzalez-Lanchas, J. -A. Flores, F. J. Sierro, M. F. Sanchez Goni, T. Rodrigues, B. Ausin, D. Oliveira, F. Naughton, M. Marino, P. Maiorano, B. Balestra
Summary: Primary productivity variations at the SW Iberian Margin are primarily controlled by wind-driven upwelling, with potential major changes influenced by atmospheric circulation and wind regimes. Studies have shown an increase in primary productivity during the interglacial MIS 11c, potentially driven by atmospheric NAO-like variability.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Geosciences, Multidisciplinary
A. Gonzalez-Lanchas, I Hernandez-Almeida, J-A Flores, F. J. Sierro, J. Guitian, H. M. Stoll
Summary: Understanding the sensitivity of coccolithophores to changing CO2 and its impact on cellular photosynthetic carbon isotopic fractionation is crucial for predicting future adaptations and past CO2 estimates. Measurement of epsilon(p) across glacial-interglacial CO2 variations showed significant correlation with CO2[aq] concentrations. The effects of non-CO2 factors on epsilon(p) cannot be fully explained by variations in cell size of Gephyrocapsa.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Guilherme A. Pedrao, Marcus V. Hirama, Mariana O. Tomazella, Ana Luiza S. Albuquerque, Cristiano M. Chiessi, Karen B. Costa, Felipe A. L. Toledo
Summary: In this study, the variations in coccolithophore assemblages and major elements (Fe, Ca, and Ti) were associated to reconstruct paleoceanographic and paleoproductivity changes. The oscillation of relative sea level was found to be the key process controlling paleoproductivity.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Luciana Martins, Karen Badaraco Costa, Felipe Toledo
Summary: The study of disarticulated ossicles of sea cucumbers from Campos Basin in Brazil has identified at least eight taxa belonging to five orders. This study demonstrates the importance of using isolated ossicles for taxonomy, biostratigraphy, and ecology. It is the first effort to study the recent fauna of sea cucumbers based on preserved ossicles in marine sediments.
Article
Geosciences, Multidisciplinary
Marina Rabineau, Massinissa Benabdellouahed, Agnes Baltzer, Romain Pellen, Antonio Tadeu dos Reis, Renata Maia, Zohra Mokeddem, Sidonie Revillon, Philippe Schnurle, Karen Costa, Felipe Toledo, Estelle Leroux, Maryline Moulin, Adriano Roessler Viana, Daniel Aslanian
Summary: This study combines seismic stratigraphic interpretation with continuous long cores to investigate climate cycle stacking on the slope of the Santos Basin in Southern Brazil. The results demonstrate that seismic profiles can accurately record geological changes in the region, regardless of subsidence rates and river inputs.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Cristianini Trescastro Bergue, Matias do Nascimento Ritter, Joao Carlos Coimbra, Karen Badaraco Costa
Summary: This study conducted the first examination of Quaternary ostracods in the Camamu Basin off the state of Bahia in northeastern Brazil, revealing rich and abundant assemblages. The analysis based on C-14 accelerator mass spectrometry dating covering the last 108 kyr showed the influence of glacial/interglacial cycles on ostracod assemblages composition, particularly during interglacial stages 5 and 1.
BRAZILIAN JOURNAL OF GEOLOGY
(2021)
Article
Environmental Sciences
Deborah Tangunan, Melissa A. Berke, Alejandra Cartagena-Sierra, Jose Abel Flores, Jens Gruetzner, Francisco Jimenez-Espejo, Leah J. LeVay, Karl-Heinz Baumann, Oscar Romero, Mariem Saavedra-Pellitero, Jason J. Coenen, Aidan Starr, Sidney R. Hemming, Ian R. Hall
Summary: The research found that the migration of the Subtropical Front in the Southern Indian Ocean during glacial and interglacial periods resulted in variability in the strength of the biological pump. Sedimentary records from the Agulhas Plateau show clear glacial-interglacial variability in sea surface temperature and productivity.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)