Publications de Anders Meibom | EPFL Graph Search

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Microbialites are organosedimentary rocks that have occurred throughout the Earth's history. The relationships between diverse microbial metabolic activities and isotopic signatures in biominerals forming within these microbialites are key to understanding ...

Melt inclusions (MIs) hosted in euhedral olivine have been proposed to represent droplets of primary melt, protected from processes occurring near Earth's surface during eruption. The complex zoning of phosphorus (P) in some olivines and the presence of a ...

Populations of genetically identical microorganisms residing in the same environment can display marked variability in their phenotypic traits; this phenomenon is termed phenotypic heterogeneity. The relevance of such heterogeneity in natural habitats is u ...

Phototrophic Cnidaria are mixotrophic organisms that can complement their het- erotrophic diet with nutrients assimilated by their algal endosymbionts. Metabolic mod- els suggest that the translocation of photosynthates and their derivatives from the algae ...

In mammals, glycogen synthesis and degradation are dynamic processes regulating blood and cerebral glucose-levels within a well-defined physiological range. Despite the essential role of glycogen in hepatic and cerebral metabolism, its spatiotemporal distr ...

Oxygen isotope compositions of calcite foraminifera tests are considered to be a robust palaeotemperature proxy at earth-surface conditions, where diffusion is slow. Recrystallization of tests during diagenesis may be optically identified and is often the ...

Example Data for DeepReefMap This dataset contains input videos in MP4 format taken with GoPro Hero 10 Cameras in Reefs in the Red Sea to demonstrate the DeepReefMap tool, which is described in the paper "Scalable Semantic 3D Mapping of Coral Reefs with De ...

Nitrogen and sulfur are key elements in the biogeochemical cycles of marine ecosystems to which benthic foraminifera contribute significantly. Yet, cell-specific assimilation of ammonium, nitrate and sulfate by these protists is poorly characterized and un ...

Fossil coral skeletons that retain their original aragonitic mineralogy are generally considered diagenetically unaltered and reliable paleoenvironmental archives. We investigated whether oxygen isotope exchange can occur between these skeletons and ambien ...

Nutritional interactions between corals and symbiotic dinoflagellate algae lie at the heart of the structural foundation of coral reefs. Whilst the genetic diversity of Symbiodinium has attracted particular interest because of its contribution to the sensi ...

The paleoseawater temperature record from the oxygen isotope compositions of fossil foraminifera tests may be biased by up to about 1 degrees C due to grain-boundary diffusion alone, according to isotope exchange experiments on foraminifera tests. The oxyg ...

Cnidarian-dinoflagellate photosynthetic symbioses are fundamental to biologically diverse and productive coral reef ecosystems. The hallmark of this symbiotic relationship is the ability of dinoflagellate symbionts to supply their cnidarian host with a wid ...

The NanoSIMS ion probe is a new-generation SIMS instrument, characterised by superior spatial resolution, high sensitivity and multi-collection capability. Isotope studies of certain elements can be conducted with 50-100nm resolution, making the NanoSIMS a ...

Today coral reefs are threatened by changes to seawater conditions associated with rapid anthropogenic global climate change. Yet, since the Cenozoic, these organisms have experienced major fluctuations in atmospheric CO2 levels (from greenhouse conditions ...

Anders Meibom

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Early precipitated micropyrite in microbialites: A time capsule of microbial sulfur cycling

Weekly to monthly time scale of melt inclusion entrapment prior to eruption recorded by phosphorus distribution in olivine from mid-ocean ridges

Phenotypic heterogeneity in metabolic traits among single cells of a rare bacterial species in its natural environment quantified with a combination of flow cell sorting and NanoSIMS

Symbiotic nutrient cycling enables the long-term survival of Aiptasia in the absence of heterotrophic food sources

Imaging liver and brain glycogen metabolism at the nanometer scale

A Reassessment of of the geochemical and isotopic fidelity of biogenic carbonates

Data for Paper "Scalable Semantic 3D Mapping of Coral Reefs with Deep Learning"

Ammonium and Sulfate Assimilation Is Widespread in Benthic Foraminifera

Rapid isotopic exchange in mineralogically unaltered coral skeletons

A nanoscale secondary ion mass spectrometry study of dinoflagellate functional diversity in reef-building corals

Rapid grain boundary diffusion in foraminifera tests biases paleotemperature records

MALDI-MS and NanoSIMS imaging techniques to study cnidarian-dinoflagellate symbioses

NanoSIMS: Technical Aspects and Applications in Cosmochemistry and Biological Geochemistry

Kleptoplastic foraminifera: the transformation of heterotrophic unicellular eukaryotes into photosynthetic organisms

A unique coral biomineralization pattern has resisted 40 million years of major ocean chemistry change

SIMS investigations of recrystallisation of and diffusion in carbonate at low and high temperature

The “language” of endosymbiotic partners. “A correlative workflow combining cryo-preparation, fluorescence/electron microscopy, and NanoSIMS imaging to “listen” to the molecular and metabolic dialogue between partners in symbiotic corals”

Sub-cellular stable isotopic imaging of metabolic interactions in symbiotic corals

Substrate and electron donor limitation induce phenotypic heterogeneity in different metabolic activities in a green sulphur bacterium

En route to ion microprobe analysis of soluble compounds at single cell level: The CryoNanoSIMS