Jennifer S. Fehrenbacher
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View article: INSIGHTS FROM GROWING <i>GLOBOROTALIA TRUNCATULINOIDES</i> AND <i>GLOBOROTALIA MENARDII</i> IN THE LABORATORY
INSIGHTS FROM GROWING <i>GLOBOROTALIA TRUNCATULINOIDES</i> AND <i>GLOBOROTALIA MENARDII</i> IN THE LABORATORY Open
The vast majority of planktic foraminiferal culture studies have been carried out on spinose species of foraminifera, with relatively few studies on non-spinose species. We conducted a pilot study to test whether live specimens of the non-…
View article: Direct pathway of incorporating dietary nitrogen in shell-bound matrix of the planktic foraminifera Trilobatus sacculifer
Direct pathway of incorporating dietary nitrogen in shell-bound matrix of the planktic foraminifera Trilobatus sacculifer Open
View article: Geochemical Differences Between Alive, Uncrusted and Dead, Crusted Shells of <i>Neogloboquadrina pachyderma</i>: Implications for Paleoreconstruction
Geochemical Differences Between Alive, Uncrusted and Dead, Crusted Shells of <i>Neogloboquadrina pachyderma</i>: Implications for Paleoreconstruction Open
Planktic foraminiferal‐based trace element‐calcium ratios (TE/Ca) are a cornerstone in paleoceanographic reconstructions. While TE‐environment calibrations are often established through culturing experiments, shell growth in culture is not…
View article: Trace element composition of modern planktic foraminifera from an oxygen minimum zone: Potential proxies for an enigmatic environment
Trace element composition of modern planktic foraminifera from an oxygen minimum zone: Potential proxies for an enigmatic environment Open
Oxygen limited marine environments, such as oxygen minimum zones, are of profound importance for global nutrient cycling and vertical habitat availability. While it is understood that the extent and intensity of oxygen minimum zones are re…
View article: Planktonic foraminiferal assemblages reflect warming during two recent mid-latitude marine heatwaves
Planktonic foraminiferal assemblages reflect warming during two recent mid-latitude marine heatwaves Open
Under future climate scenarios, ocean temperatures that are presently extreme and qualify as marine heatwaves (MHW) are forecasted to increase in frequency and intensity, but little is known about the impact of these events on one of the m…
View article: Strontium and Lithium in planktic foraminiferal shells: a new tracer for surface ocean carbon concentration?
Strontium and Lithium in planktic foraminiferal shells: a new tracer for surface ocean carbon concentration? Open
View article: Editorial: Protists as model ecological and evolutionary study systems: Emerging methodologies of the 21st century
Editorial: Protists as model ecological and evolutionary study systems: Emerging methodologies of the 21st century Open
EDITORIAL article Front. Mar. Sci., 31 August 2022Sec. Ocean Observation https://doi.org/10.3389/fmars.2022.1014238
View article: Barium enrichment in the non-spinose planktic foraminifer, Globorotalia truncatulinoides
Barium enrichment in the non-spinose planktic foraminifer, Globorotalia truncatulinoides Open
Observations of elevated barium-to-calcium ratios (Ba/Ca) in Globorotalia truncatulinoides have been attributed to contaminant phases, deep calcification depth and diagenetic processes. Here we investigate intra- and inter-test Ba/Ca varia…
View article: Symbiont Photosynthesis and Its Effect on Boron Proxies in Planktic Foraminifera
Symbiont Photosynthesis and Its Effect on Boron Proxies in Planktic Foraminifera Open
Boron proxies in the calcium carbonate shells of planktic foraminifera are sensitive to seawater acidity, but B/Ca ratios and isotopic composition (i.e., δ 11 B) recorded by different foraminifer species grown under identical environmental…
View article: In Situ Mg/Ca Measurements on Foraminifera: Comparison Between Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Wavelength‐Dispersive X‐Ray Spectroscopy by Electron Probe Microanalyzer
In Situ Mg/Ca Measurements on Foraminifera: Comparison Between Laser Ablation Inductively Coupled Plasma Mass Spectrometry and Wavelength‐Dispersive X‐Ray Spectroscopy by Electron Probe Microanalyzer Open
We present a comparison of two different techniques: Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICP‐MS) and wavelength‐dispersive X‐Ray Spectroscopy by electron probe microanalyzer (EPMA) for obtaining Mg/Ca ratios in …
View article: Exploring controls on the geochemistry of non-spinose planktic foraminifera via culture experiments, plankton tow specimens, and micron-scale analyses.
Exploring controls on the geochemistry of non-spinose planktic foraminifera via culture experiments, plankton tow specimens, and micron-scale analyses. Open
View article: Preferential Loss of High Trace Element Bearing Inner Calcite in Foraminifera During Physical and Chemical Cleaning
Preferential Loss of High Trace Element Bearing Inner Calcite in Foraminifera During Physical and Chemical Cleaning Open
Trace elements (TEs) in the calcite shells of foraminifera are widely used in paleoceanographic reconstructions. Nearly all TE analytical protocols include cleaning to remove contaminant phases. Understanding, how the TE composition is alt…
View article: Heterotrophic Foraminifera Capable of Inorganic Nitrogen Assimilation
Heterotrophic Foraminifera Capable of Inorganic Nitrogen Assimilation Open
Nitrogen availability often limits biological productivity in marine systems, where inorganic nitrogen, such as ammonium is assimilated into the food web by bacteria and photoautotrophic eukaryotes. Recently, ammonium assimilation was obse…
View article: Ammonium is the preferred source of nitrogen for planktonic foraminifer and their dinoflagellate symbionts
Ammonium is the preferred source of nitrogen for planktonic foraminifer and their dinoflagellate symbionts Open
The symbiotic planktonic foraminifera Orbulina universa inhabits open ocean oligotrophic ecosystems where dissolved nutrients are scarce and often limit biological productivity. It has previously been proposed that O. universa meets its ni…
View article: Data from NanoSIMS analysis, software LANS_LeKieffre et al. 2020_ Proceedings B
Data from NanoSIMS analysis, software LANS_LeKieffre et al. 2020_ Proceedings B Open
Data extracted from NanoSIMS analysis with the software Look@NanoSIMS (Polerecky et al. 2012). Different foraminiferal cytoplasmic compartments and the symbiotic dinoflagellates were analyzed for their 13C/12C and 15N/14N isotopic ratios. …
View article: Data from NanoSIMS analysis, software LANS_LeKieffre et al. 2020_ Proceedings B
Data from NanoSIMS analysis, software LANS_LeKieffre et al. 2020_ Proceedings B Open
Data extracted from NanoSIMS analysis with the software Look@NanoSIMS (Polerecky et al. 2012). Different foraminiferal cytoplasmic compartments and the symbiotic dinoflagellates were analyzed for their 13C/12C and 15N/14N isotopic ratios. …
View article: Data for: Incorporation of heavy metals in experimentally grown foraminifera from Sapelo Island, Georgia and Little Duck Key, Florida, U.S.A.
Data for: Incorporation of heavy metals in experimentally grown foraminifera from Sapelo Island, Georgia and Little Duck Key, Florida, U.S.A. Open
This dataset includes all pertinent data from this manuscript, including raw LA-ICP-MS data.
View article: Mg/Ca ratio of planktonic Orbulina universa from Green Island, Taiwan (0-50 m depth)
Mg/Ca ratio of planktonic Orbulina universa from Green Island, Taiwan (0-50 m depth) Open
Mg/Ca anlaysis of foraminiferal calcite shells. Foraminifera obtained from sediments (benthic, Uvigerina spp.; sediment from ODP Site 1015, California Margin) and from plankton tows (planktonic, Orbulina universa, plankton tow specimens we…
View article: Automated species-level identification of planktic foraminifera using convolutional neural networks, with comparison to human performance
Automated species-level identification of planktic foraminifera using convolutional neural networks, with comparison to human performance Open
View article: Environmental controls on the geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico: Implications for paleoceanographic reconstructions
Environmental controls on the geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico: Implications for paleoceanographic reconstructions Open
View article: Assimilation, translocation, and utilization of carbon between photosynthetic symbiotic dinoflagellates and their planktic foraminifera host
Assimilation, translocation, and utilization of carbon between photosynthetic symbiotic dinoflagellates and their planktic foraminifera host Open
View article: 16S rRNA gene metabarcoding and TEM reveals different ecological strategies within the genus Neogloboquadrina (planktonic foraminifer)
16S rRNA gene metabarcoding and TEM reveals different ecological strategies within the genus Neogloboquadrina (planktonic foraminifer) Open
Uncovering the complexities of trophic and metabolic interactions among microorganisms is essential for the understanding of marine biogeochemical cycling and modelling climate-driven ecosystem shifts. High-throughput DNA sequencing method…
View article: NanoSIMS data, 13C assimilation in the symbiotic dinoflagellates and their foraminiferal host (Orbulina universa)
NanoSIMS data, 13C assimilation in the symbiotic dinoflagellates and their foraminiferal host (Orbulina universa) Open
Here we performed pulse-chase experiments with 13C-enriched dissolved inorganic carbon, followed by TEM and quantitative NanoSIMS isotopic imaging to visualize photosynthetic C assimilation by individual symbiotic dinoflagellates and subse…
View article: Barium/calcium ratios in planktic foraminifer Neogloboquadrina dutertrei
Barium/calcium ratios in planktic foraminifer Neogloboquadrina dutertrei Open
Dataset contains seawater and foraminiferal chemical composition from the paper referenced above. Paper abstract: Ba/Ca ratios in many non-spinose planktic foraminifera are markedly higher than those observed in spinose planktic species, b…
View article: Link between light-triggered Mg-banding and chamber formation in the planktic foraminifera Neogloboquadrina dutertrei
Link between light-triggered Mg-banding and chamber formation in the planktic foraminifera Neogloboquadrina dutertrei Open
View article: Cyanobacterial endobionts within a major marine planktonic calcifier ( <i>Globigerina bulloides</i> , Foraminifera) revealed by 16S rRNA metabarcoding
Cyanobacterial endobionts within a major marine planktonic calcifier ( <i>Globigerina bulloides</i> , Foraminifera) revealed by 16S rRNA metabarcoding Open
We investigated the possibility of bacterial symbiosis in Globigerina bulloides, a palaeoceanographically important, planktonic foraminifer. This marine protist is commonly used in micropalaeontological investigations of climatically sensi…
View article: 16S rRNA gene metabarcoding reveals a potential metabolic role for intracellular bacteria in a major marine planktonic calcifier (Foraminifera)
16S rRNA gene metabarcoding reveals a potential metabolic role for intracellular bacteria in a major marine planktonic calcifier (Foraminifera) Open
We investigated the possibility of bacterial symbiosis in Globigerina bulloides, a palaeoceanographically important, planktonic foraminifer. This marine protist is commonly used in investigations of climatically sensitive subpolar and temp…
View article: Supplementary material to "16S rRNA gene metabarcoding reveals a potential metabolic role for intracellular bacteria in a major marine planktonic calcifier (Foraminifera)"
Supplementary material to "16S rRNA gene metabarcoding reveals a potential metabolic role for intracellular bacteria in a major marine planktonic calcifier (Foraminifera)" Open
View article: Nanometer-Scale Chemistry of a Calcite Biomineralization Template: Implications for Skeletal Composition and Nucleation
Nanometer-Scale Chemistry of a Calcite Biomineralization Template: Implications for Skeletal Composition and Nucleation Open
Significance Many marine organisms build complex CaCO 3 shells, which record an archive of past climate in their trace chemistry. Organic–mineral interactions are a crucial, poorly understood aspect of shell formation, which may alter shel…
View article: Photosynthesis, carbon and nitrogen exchange between a symbiotic dinoflagellate and planktonic foraminifera host cell
Photosynthesis, carbon and nitrogen exchange between a symbiotic dinoflagellate and planktonic foraminifera host cell Open