Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. [PDF]
Nature Communications, 2018 Middle-to-late Ediacaran (575-541 Ma) marine sedimentary rocks record the first appearance of macroscopic, multicellular body fossils, yet little is known about the environments and food sources that sustained this enigmatic fauna.
Bekker, Andrey +7 more
core +4 more sources
Geophysical Monograph Series, Page 1-26., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst +8 more
wiley +7 more sources
Geophysical Research Letters, 2019 Final Rodinia supercontinent breakup during the early Ediacaran is recorded by mafic dyke swarms in Baltica and Laurentia, but corresponding dykes have been elusive for Amazonia, the third craton involved.
Bodo Weber +3 more
doaj +2 more sources
Frontiers in Microbiology, 2019 The spoilage potential and biofilm formation of Shewanella baltica are reported to be regulated by Quorum sensing (QS) system from the phenotype point of view, but the specific mechanism is not fully understood.
Yanbo Wang +6 more
doaj +2 more sources
Genomic Variations Underlying Speciation and Niche Specialization of
mSystems, 2019 Shewanella baltica was the dominant culturable nitrate-reducing bacterium in the eutrophic and strongly stratified Baltic Sea in the 1980s, where it primarily inhabited the oxic-anoxic transition zone.
Jie Deng +5 more
doaj +2 more sources
Prokaryotic PfaB is a terminal acyltransferase that determines the final PUFA product. [PDF]
Protein SciAbstract Omega‐3 polyunsaturated fatty acids (PUFAs) are essential for human health due to their numerous beneficial biological properties. These compounds are synthesized in marine bacteria and eukaryotic microalgae by PUFA megasynthases (Pfas), which are evolutionarily related to fatty acid synthases (FAS) and polyketide synthases (PKS). In FAS, PKS,
Lofeudo N +5 more
europepmc +2 more sources
Diversity and spatial turnover of bryozoan assemblages in the reefs of the Vasalemma Formation (Late Ordovician), Estonia [PDF]
Estonian Journal of Earth Sciences, 2023 The reefs of the Vasalemma Formation, late Sandbian, Late Ordovician, of northern Estonia contain an exceptionally rich and abundant bryozoan fauna. They are an example of contemporaneous bryozoan-rich reefs known from around the world, representing the ...
Björn Köger +4 more
doaj +1 more source
Frontiers in Microbiology, 2022 Shewanella baltica is the dominant bacterium that causes spoilage of seafood. RpoS is an alternative sigma factor regulating stress adaptation in many bacteria. However, the detailed regulatory mechanism of RpoS in S. baltica remains unclear.
Caili Zhang +4 more
doaj +1 more source
Searching for the Ordovician–Silurian boundary in Estonia, Latvia and Lithuania [PDF]
Estonian Journal of Earth Sciences, 2023 The present study focuses on determining the position of the lower boundary of the Silurian System in the eastern Baltic region. To achieve this, we conducted a comprehensive analysis of stable isotopic curves, combined with previously published data on ...
Tõnu Meidla, Olle Hints, Leho Ainsaar
doaj +1 more source
Age of the Ordovician sedimentary succession in Lumparn Bay, Åland Islands, Finland [PDF]
Estonian Journal of Earth Sciences, 2023 Depression of the ancient Lumparn meteorite impact structure in the à land Islands is partly infilled with the lower Palaeozoic sediments, lying presently below sea level. The Cambrian and Ordovician sedimentary cover is distributed in the area of 15 km2,
Leho Ainsaar, Tõnu Meidla
doaj +1 more source