Volumetric analysis of benthic foraminifera: Intraspecific test size and growth patterns related to embryonic size and food resources

Belanger, Christina L.

doi:10.1016/j.marmicro.2022.102170

Cited by 8 publications

(4 citation statements)

References 54 publications

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“…Deformed tests are reported in areas subject to different types of pollution e.g., heavy metals (Alve, 1991), and hydrocarbons (Morvan et al, 2004) but also from areas with a large gradient of salinity such as brackish conditions (Charrieau et al, 2018b). However, lower SV ratios are also observed in benthic foraminifera from high-latitude regions due to the increased volume and size of specimens, probably related to the availability of organic matter even in low-oxygen environments (Belanger, 2022). Therefore, food availability may also increase the calcite SV ratio variability because of a larger calcite volume.…”

Section: Morphological Traits Based On Environmental Stressorsmentioning

confidence: 99%

Virtual Paleobiology – Advances in X-Ray Computed Microtomography and 3D Visualization of Fossils

2024

Frontiers Research Topics

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Frontiers is more than just an open access publisher of scholarly articles: it is a pioneering approach to the world of academia, radically improving the way scholarly research is managed. The grand vision of Frontiers is a world where all people have an equal opportunity to seek, share and generate knowledge. Frontiers provides immediate and permanent online open access to all its publications, but this alone is not enough to realize our grand goals. Frontiers journal seriesThe Frontiers journal series is a multi-tier and interdisciplinary set of openaccess, online journals, promising a paradigm shift from the current review, selection and dissemination processes in academic publishing. All Frontiers journals are driven by researchers for researchers; therefore, they constitute a service to the scholarly community. At the same time, the Frontiers journal series operates on a revolutionary invention, the tiered publishing system, initially addressing specific communities of scholars, and gradually climbing up to broader public understanding, thus serving the interests of the lay society, too. Dedication to qualityEach Frontiers article is a landmark of the highest quality, thanks to genuinely collaborative interactions between authors and review editors, who include some of the world's best academicians. Research must be certified by peers before entering a stream of knowledge that may eventually reach the public -and shape society; therefore, Frontiers only applies the most rigorous and unbiased reviews. Frontiers revolutionizes research publishing by freely delivering the most outstanding research, evaluated with no bias from both the academic and social point of view. By applying the most advanced information technologies, Frontiers is catapulting scholarly publishing into a new generation. What are Frontiers Research Topics?Frontiers Research Topics are very popular trademarks of the Frontiers journals series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area.

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Section: Morphological Traits Based On Environmental Stressorsmentioning

confidence: 99%

Virtual Paleobiology – Advances in X-Ray Computed Microtomography and 3D Visualization of Fossils

2024

Frontiers Research Topics

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“…While there is a history of (semi-) automated approaches being used on benthic foraminifer taxa to extract information such as size 29 , 2D shape 8 , 30 , calcite thickness 31 , life history variation 11 , 32 , and biovolume through ontogeny 13 , 33 , these datasets are rarely publicly available in their raw forms. This combined lack of data on individual-level trends and a lack of accessibility for those data that do exist have limited the ability of additional studies to build on previous results and describe trends at population and community scales.…”

Section: Background and Summarymentioning

confidence: 99%

An 800-year record of benthic foraminifer images and 2D morphometrics from the Santa Barbara Basin

Kahanamoku-Meyer,

Samuels-Fair,

Kamel

et al. 2024

Sci Data

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The Santa Barbara Basin is an extraordinary archive of environmental and ecological change, where varved sediments preserve microfossils that provide an annual to decadal record of the dynamics of surrounding ecosystems. Of the microfossils preserved in these sediments, benthic foraminifera are the most abundant seafloor-dwelling organisms. While they have been extensively utilized for geochemical and paleoceanographic work, studies of their morphology are lacking. Here we use a high-throughput imaging method (AutoMorph) designed to extract 2D data from photographic images of fossils to produce a large image and 2D shape dataset of recent benthic foraminifera from two core records sampled from the center of the Santa Barbara Basin that span an ~800-year-long interval during the Common Era (1249–2008 CE). Information on more than 36,000 objects is included, of which more than 22,000 are complete or partially-damaged benthic foraminifera. The dataset also includes other biogenic microfossils including ostracods, pteropods, diatoms, radiolarians, fish teeth, and shark dermal denticles. We describe our sample preparation, imaging, and identification techniques, and outline potential data uses.

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Section: Morphological Traits Based On Environmental Stressorsmentioning

confidence: 99%

“…These studies have mainly reconstructed planktonic and tropical large benthic foraminifera (Figure 1B). Small-size benthic foraminiferal species from highlatitude regions have received less attention (Belanger, 2022), despite their rich abundance in these areas (Charrieau et al, 2019), and the ongoing large focus on high-latitude climate change, e.g., in the last IPCC reports (Rhein et al, 2013;Bindoff et al, 2019;Meredith et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

3D morphological variability in foraminifera unravel environmental changes in the Baltic Sea entrance over the last 200 years

Choquel

Müter

et al. 2023

Front. Earth Sci.

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Human activities in coastal areas have intensified over the last 200 years, impacting also high-latitude regions such as the Baltic Sea. Benthic foraminifera, protists often with calcite shells (tests), are typically well preserved in marine sediments and known to record past bottom-water conditions. Morphological analyses of marine shells acquired by microcomputed tomography (µCT) have made significant progress toward a better understanding of recent environmental changes. However, limited access to data processing and a lack of guidelines persist when using open-source software adaptable to different microfossil shapes. This study provides a post-data routine to analyze the entire test parameters: average thickness, calcite volume, calcite surface area, number of pores, pore density, and calcite surface area/volume ratio. A case study was used to illustrate this method: 3D time series (i.e., 4D) of Elphidium clavatum specimens recording environmental conditions in the Baltic Sea entrance from the period early industrial (the 1800s) to present-day (the 2010 s). Long-term morphological trends in the foraminiferal record revealed that modern specimens have ∼28% thinner tests and ∼91% more pores than their historic counterparts. However, morphological variability between specimens and the BFAR (specimens cm−2 yr−1) in E. clavatum were not always synchronous. While the BFAR remained unchanged, morphological variability was linked to natural environmental fluctuations in the early industrial period and the consequences of anthropogenic climate change in the 21st century. During the period 1940–2000 s, the variations in BFAR were synchronous with morphological variability, revealing both the effects of the increase in human activities and major hydrographic changes. Finally, our interpretations, based on E. clavatum morphological variations, highlight environmental changes in the Baltic Sea area, supporting those documented by the foraminiferal assemblages.

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Volumetric analysis of benthic foraminifera: Intraspecific test size and growth patterns related to embryonic size and food resources

Cited by 8 publications

References 54 publications

Virtual Paleobiology – Advances in X-Ray Computed Microtomography and 3D Visualization of Fossils

Virtual Paleobiology – Advances in X-Ray Computed Microtomography and 3D Visualization of Fossils

An 800-year record of benthic foraminifer images and 2D morphometrics from the Santa Barbara Basin

3D morphological variability in foraminifera unravel environmental changes in the Baltic Sea entrance over the last 200 years

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