We herein present an original high-resolution dataset on the Late Pleistocene to Holocene (>15.17 ka BP) benthic foraminiferal record of two continuous sediment cores (DEH 5 and DEH 1), drilled from the shallow (max. depth ∼75 m) semi-enclosed basin of South Evoikos Gulf (central Aegean, Greece). Owing to its particular configuration, this marginal setting has been heavily affected by the latest-glacial to modern-interglacial sea-level and climate oscillations that left clear imprints on the benthic foraminiferal community. Our data comprise quantitative information of the downcore faunal distribution (raw species counts and relative abundances), diversity measurements, simplified datasets used for clustering analysis and calibrated age spans. This material can be efficiently utilized in any comparative or synthetic future study on the reconstruction of the latest-Quaternary palaeoceanographic (palaeobathymetric, sea-level) and palaeoenvironmental evolution of the Mediterranean shelf. The present data article is associated with the research article "Impact of latest-glacial to Holocene sea-level oscillations on central Aegean shelf ecosystems: A benthic foraminiferal palaeoenvironmental assessment of South Evoikos Gulf, Greece" by Louvari et al. (2019).
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http://dx.doi.org/10.1016/j.dib.2019.104539 | DOI Listing |
ISME J
January 2025
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, United States.
Investigations of the metabolic capabilities of anaerobic protists advances our understanding of the evolution of eukaryotic life on Earth and for uncovering analogous extraterrestrial complex microbial life. Certain species of foraminiferan protists live in environments analogous to early Earth conditions when eukaryotes evolved, including sulfidic, anoxic and hypoxic sediment porewaters. Foraminifera are known to form symbioses as well as to harbor organelles from other eukaryotes (chloroplasts), possibly bolstering the host's independence from oxygen.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
December 2024
Environmental Biophysics and Molecular Ecology Program, Department of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901.
Foraminifera are unicellular protists capable of precipitating calcite tests, which fossilize and preserve geochemical signatures of past environmental conditions dating back to the Cambrian period. The biomineralization mechanisms responsible for the mineral structures, which are key to interpreting palaeoceanographic signals, are poorly understood. Here, we present an extensive analysis of the test-bound proteins.
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December 2024
Ocean Sciences, NIOZ-Netherlands Institute for Sea Research, Texel, Netherlands.
Marine biogenic calcium carbonate production plays a role in the exchange of CO between ocean and atmosphere. The effect of increased CO on calcification and on the resulting chemistry of shells and skeletons, however, is only partly understood. Foraminifera are among the main marine CaCO producers and the controls on element partitioning and isotope fractionation is the subject of many recent investigations.
View Article and Find Full Text PDFSci Data
November 2024
Department of Genetics and Evolution, University of Geneva, 1211, Geneva 4, Switzerland.
Sci Total Environ
December 2024
Department of Analytical Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland.
Polar ecosystems are considered very fragile, however, due to the short observation record it is hard to assess the recovery processes of the coastal and fjord environments after a major disturbance. Here, we provide a unique case study from South Georgia (sub-Antarctic), an area seriously affected by the whaling industry. The study focuses on King Edward Cove, serving as a sheltered harbor for the former whaling station at Grytviken, as well as other parts of Cumberland Bay considered to represent generally pristine areas.
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