Article
Geochemistry & Geophysics
Scott D. Midgley, Dominik Fleitmann, Ricardo Grau-Crespo
Summary: The presence of bromine as a trace-element in calcium carbonate speleothems is a useful proxy for past volcanic activity. However, the chemical nature of bromine-containing impurities in speleothems is not well-understood, which hinders the interpretation of experimental measurements. A computer simulation study based on quantum mechanical calculations was conducted to investigate the incorporation of bromine in calcium carbonate polymorphs. The study discusses the distribution of bromate oxyanions and charge-compensating cations and predicts their stability and solubility limits.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Mohammed S. Hashim, Stephen E. Kaczmarek
Summary: The presence of magnesium in natural waters can strongly inhibit calcite precipitation and the transformation of aragonite to calcite. The rate at which aragonite stabilizes to calcite increases with lower fluid:solid ratios. Increases in fluid:solid ratio also lead to greater incorporation of magnesium into calcite products, suggesting that fluid:solid ratio is an important factor in carbonate diagenesis.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Review
Ecology
Jess F. Adkins, John D. Naviaux, Adam V. Subhas, Sijia Dong, William M. Berelson
Summary: The dissolution of CaCO3 minerals in the ocean is a fundamental aspect of marine alkalinity and carbon cycling, but there is still disagreement regarding the relationship between dissolution rate and mineral saturation state. While freshwater dissolution of calcite has been well studied, a unified understanding of carbonate dissolution in the ocean is lacking, with disagreements between laboratory and field studies. This review proposes a new framework that considers surface energetics and seawater speciation to explain recent data and historical features.
ANNUAL REVIEW OF MARINE SCIENCE, VOL 13, 2021
(2021)
Article
Materials Science, Multidisciplinary
Yao-Wen Yeh, Sobhit Singh, Guangming Cheng, Nan Yao, Karin M. Rabe, David Vanderbilt, Philip E. Batson, Long Pan, Guofeng Xu, Shiyou Xu
Summary: In this study, the bonding state of calcium carbonate, a crucial building component in organisms, specifically the polymorphs calcite and aragonite, was characterized using valence (low-loss) electron energy loss spectroscopy. The difference in the Ca M23 edge, originating from 3p to 3d states, was found to align with the changes in Ca-O bonds in the two polymorphs. Surprisingly, the measured Ca M23 edge demonstrated qualitative agreement with the calculated partial density of states (PDOS) of Ca-d states, in contrast to the L edges (from 2p to 3d states) heavily influenced by atomic multiplet effect (spin-orbit coupling). These findings indicate that PDOS could potentially be utilized in interpreting the M23 edge of lighter 3d transition metals.
Article
Construction & Building Technology
Diandian Zhao, Jonah M. Williams, Ah-Hyung Alissa Park, Shiho Kawashima
Summary: In this research, all three forms of calcium carbonate (calcite, aragonite, and vaterite) were synthesized and their effects on cement rheology were studied. It was found that aragonite increased the yield stress and storage modulus of cement pastes, while calcite and vaterite did not. The mechanisms underlying these changes were discussed, including geometric features, hydration kinetics, and surface charge.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Construction & Building Technology
Diandian Zhao, Jonah M. Williams, Zhanzhao Li, Ah-Hyung Alissa Park, Aleksandra Radli, Pengkun Hou, Shiho Kawashima
Summary: Three anhydrous calcium carbonate polymorphs (calcite, aragonite, and vaterite) were synthesized and characterized in this study. The effects of these polymorphs on cement pastes, including compressive strength, hydration kinetics, and phase compositions, were investigated. The results showed that aragonite and vaterite remained stable in the cement systems even after a prolonged age, which had implications for their use in cement systems depending on the intended applications.
CEMENT AND CONCRETE RESEARCH
(2023)
Article
Geochemistry & Geophysics
Xianfeng Liu, Yilin Liang, Jinbao Duan, Yanping Luo
Summary: The Maokou Formation in the Sichuan Basin has the potential to become a new field for oil and gas exploration. The Eyeball-shaped limestone in the Maokou Formation has a different hydrocarbon enrichment pattern compared to conventional unconventional shale gas reservoirs and conventional carbonate reservoirs.
Article
Engineering, Chemical
Louiza Abidi, Frederic Amiard, Nicolas Delorme, Salim Ouhenia, Alain Gibaud
Summary: This paper aims to demonstrate the synthesis of superhydrophobic particles of calcium carbonate at a low cost using harmless and biocompatible natural products such as baking soda and olive oil. The particles were transformed into hydrophobic ones using soap made from olive oil, and various techniques were used to analyze their properties. The results showed that the particles exhibited superhydrophobicity and were functionalized by soap. The study also provided evidence of the efficiency of these particles in oil spill recovery.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Energy & Fuels
Imran K. Shaik, Linqi Zhang, Sushobhan Pradhan, A. Kaan Kalkan, Clint P. Aichele, Prem K. Bikkina
Summary: This study focuses on the functionalization of microfluidic chips to mimic surface mineralogy and visualize multiphase flow and transport processes in porous media. By depositing calcium carbonate layers on glass surfaces, the formation and control of calcium carbonate polymorphs were analyzed. The influence of different process parameters on the coating procedure was evaluated, and strategies to transform vaterite to thermodynamically stable calcite were discussed. Various analytical techniques were used to examine coating uniformity, morphology, elemental composition, and CaCO3 polymorphs.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Materials Science, Ceramics
Keishi Ideo, Hidetoshi Miyazaki
Summary: This study demonstrates that the crystalline phase of calcium carbonate varies depending on the substrate. The proportion of aragonite phase increases with deposition time on the soda-lime silicate glass substrate.
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2022)
Article
Geochemistry & Geophysics
Julliana F. Alves, Howell G. M. Edwards, Andrey Korsakov, Luiz Fernando C. de Oliveira
Summary: This work presents a new discussion on the vibrational properties of the carbonate ion in different environments, considering the effects of cation substitution, crystal lattice, and crystal aggregation. By analyzing data obtained with four different laser excitation sources, the study highlights how these changes affect the Raman modes. The results reveal differences in the relative intensity and width of the Raman bands, providing new observations for understanding these materials and their spectra.
Article
Chemistry, Multidisciplinary
Shuheng Zhang, Ouassef Nahi, Li Chen, Zabeada Aslam, Nikil Kapur, Yi-Yeoun Kim, Fiona C. Meldrum
Summary: Remarkable control can be achieved over the chemical composition and structure of crystalline calcium carbonate by driving a pseudomorphic transformation of amorphous calcium carbonate thin films using heat. This has relevance to both synthetic and biological systems.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Environmental Sciences
A. Esquivias-Fierro, J. R. Gonzalez-Lopez, L. Chavez-Guerrero
Summary: The study introduces a method for synthesizing calcium carbonate films using ash as raw material, with a nylon mesh facilitating calcium uptake and achieving a recovery of up to 64%. The technique has potential for large scale production of highly pure CaCO3 powder, as confirmed by analysis using various techniques including scanning electron microscopy and Raman spectroscopy.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Environmental Sciences
Mauro Mecozzi, Riccardo Delle Fratte, Marco Pietroletti, Fabrizio Novelli, Umberto Scacco
Summary: In this study, FTIR and FTNIR spectroscopy were used to investigate the structural characteristics of different mollusc shells sampled from various sites. The results showed that the structural differences in these shells were related to local environmental conditions. FTIR spectra were able to detect the role of amorphous calcium carbonate in the shell structure, and FTNIR spectroscopy could detect the presence of protein structures in the shells.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biology
Allison N. Curley, Sierra V. Petersen, Stewart M. Edie, Weifu Guo
Summary: Traditional bulk stable isotope (delta O-18 and delta C-13) and clumped isotope (Delta(47)) records from bivalve shells provide valuable histories of Earth's climate change. However, biologically driven isotopic fractionations (BioDIFs) can affect the accuracy of these records. This study explores how to interpret the measurements of delta O-18, delta C-13, and Delta(47) in bivalve shells to investigate physiological processes. It proposes an analytical framework to maximize the information obtained from the isotopic composition of fossil shell material.
BIOLOGICAL REVIEWS
(2023)
Article
Ecology
Maria Leo, Manuel J. Steinbauer, Paulo A. V. Borges, Eduardo B. de Azevedo, Rosalina Gabriel, Hanno Schaefer, Ana M. C. Santos
Summary: The study found a significant relationship between dispersal syndromes and niche size, as well as between dispersal syndromes and niche fill. Endozoochorous species were found to have higher niche fill compared to epizoochorous and hydrochorous species. However, there was no phylogenetic signal in these relationships, and no significant differences were found among the other groups in terms of niche size or niche fill.
JOURNAL OF BIOGEOGRAPHY
(2021)
Article
Multidisciplinary Sciences
Gregor H. Mathes, Wolfgang Kiessling, Manuel J. Steinbauer
Summary: The research highlights the significant impact of paleoclimate interactions on the origination probability of marine fossil genera, with short-term cooling overlaying a long-term cooling trend leading to a 27.8% increase in origination probability. Additionally, continental fragmentation has a similar effect on origination rates, supporting the importance of allopatric speciation through habitat fragmentation in the deep-time fossil record. The complex nature of paleoclimate interactions can help explain contradictory conclusions on the relationship between temperature and origination in previous literature, emphasizing the need to consider complex interactions in evolutionary studies.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Geochemistry & Geophysics
Adam D. Sproson, Philip A. E. Pogge von Strandmann, David Selby, Emilia Jarochowska, Jiri Fryda, Jindrich Hladil, David K. Loydell, Ladislav Slavik, Mikael Calner, Georg Maier, Axel Munnecke, Timothy M. Lenton
Summary: The Ordovician period ended with the formation of extensive ice sheets in the Southern Hemisphere known as the Hirnantian glaciation, along with the second largest mass extinction in Earth's history. The following Silurian period was characterized by climatic instability and large carbon isotope perturbations associated with extinction events, the causes of which remain largely unknown. The study suggests that astronomical forcing of the marine organic carbon cycle triggered continent-wide glaciation and global cooling during the Silurian period.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geology
Bryan Shirley, Emilia Jarochowska
Summary: This study quantifies the errors in elemental composition obtained with EDX analysis arising from surface topography and user decisions. The research shows that microscale topography can distort measured composition by up to 34%, while features like tilt can lead to differences of up to 85%. Factors like working distance, standard choice, and leveling with the sample surface also affect the results.
Article
Ecology
Dagmar M. Hanz, Vanessa Cutts, Martha Paola Barajas-Barbosa, Adam C. Algar, Carl Beierkuhnlein, Jose-Maria Fernandez-Palacios, Richard Field, Holger Kreft, Manuel J. Steinbauer, Patrick Weigelt, Severin D. H. Irl
Summary: Functional traits can elucidate biogeographical and ecological processes driving assemblage structure. Our study on plant species of different evolutionary origins in the Canary Islands revealed that endemic and non-endemic native species possess similar traits, while alien species tend to expand functional space in introduced ecosystems. The distribution of functional diversity of floristic groups is distinct across environmental gradients, indicating their adaptation to different habitats.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Biodiversity Conservation
David F. Terrill, Emilia Jarochowska, Charles M. Henderson, Bryan Shirley, Oskar Bremer
Summary: Conodonts are a diverse and abundant vertebrate group found in marine Paleozoic and Triassic strata. This study tested the hypothesis that individual conodont taxa occupied different trophic niches, using Sr/Ca and Ba/Ca ratios preserved in dental elements.
Article
Ecology
Anna Walentowitz, Claudia Troiano, Julie B. Christiansen, Manuel J. Steinbauer, Anders S. Barfod
Summary: This study investigates how plant dispersal syndromes influence species richness in relation to island area, isolation, and human impact. It finds that island area acts as a strong filter for different dispersal syndromes, with human activity positively affecting species richness and seed mass.
JOURNAL OF BIOGEOGRAPHY
(2022)
Article
Multidisciplinary Sciences
Miriam Thiemann, Rebekka Riebl, Maria Haensel, Thomas M. Schmitt, Manuel J. Steinbauer, Theresa Landwehr, Ute Fricke, Sarah Redlich, Thomas Koellner
Summary: This study aims to explore the impact of land cover, climate gradients, and socio-cultural factors on the perceptions of ecosystem services among citizens, farmers, foresters, and nature managers. The findings indicate that there is a high level of consensus among these groups regarding the perceived importance of many ecosystem services, although there are some differences in perception for certain services. Farmers, compared to other groups, attribute slightly lower importance to all ecosystem services except provisioning services. Socio-cultural factors have a greater influence on the perceived importance of ecosystem services than land cover and climate gradients.
Article
Multidisciplinary Sciences
Alexander Zizka, Renske E. Onstein, Roberto Rozzi, Patrick Weigelt, Holger Kreft, Manuel J. Steinbauer, Helge Bruelheide, Frederic Lens
Summary: Insular woodiness (IW), the transition from herbaceousness to woodiness, is a distinctive feature of island floras. Previous studies have proposed several drivers of IW, including competition for sunlight, drought, increased lifespan, and reduced herbivory. This study identified 1,097 insular woody species on 375 islands and inferred at least 175 evolutionary transitions on 31 archipelagos. Structural equation models revealed the correlation between insular woody species richness and favorable climate, drought, and island isolation. The results highlight the importance of archipelagos as natural laboratories for studying convergent evolution.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Ecology
Nichola A. Strandberg, Mary Edwards, Joanna C. Ellison, Manuel J. Steinbauer, Anna Walentowitz, Patricia L. Fall, David Sear, Peter Langdon, Shane Cronin, Alvaro Castilla-Beltran, Ian W. Croudace, Matiu Prebble, William D. Gosling, Sandra Nogue
Summary: In this study, we investigated how changing sea levels and recurrent volcanic eruptions have influenced vegetation dynamics in low-lying coastal areas in Tonga. We analyzed pollen, charcoal, and sediment characteristics from a sediment core to examine past vegetation and environmental change. We found that relative sea level change has impacted vegetation on three out of the four investigated islands, while volcanic eruptions were not identified as a driver of vegetation change.
Article
Ecology
Vanessa Cutts, Dagmar M. Hanz, Martha Paola Barajas-Barbosa, Franziska Schrodt, Manuel J. Steinbauer, Carl Beierkuhnlein, Pierre Denelle, Jose Maria Fernandez-Palacios, Pierre Gauzere, Matthias Grenie, Severin D. H. Irl, Nathan Kraft, Holger Kreft, Brian Maitner, Francois Munoz, Wilfried Thuiller, Cyrille Violle, Patrick Weigelt, Richard Field, Adam C. Algar
Summary: Current models of island biogeography treat endemic and non-endemic species as if they were functionally equivalent, focussing primarily on species richness. Thus, the functional composition of island biotas in relation to island biogeographical variables remains largely unknown.
Article
Biodiversity Conservation
Valentin Kelz, Pauline Guenser, Manuel Rigo, Emilia Jarochowska
Summary: The drivers of the rapid morphological evolution of conodont elements are debated, with some arguing that the elements performed mechanical digestion based on positive allometric relationships. This study reevaluates the assumption that energy requirements and tooth area grew at different rates, finding support for a grasping-tooth hypothesis. It also suggests that conodont metabolic rates increased faster than mass, and food diversification may have been an important driver of the disparity in conodont elements.
Article
Biodiversity Conservation
Gregor H. Mathes, Manuel J. Steinbauer, Laura Cotton
Summary: This study aims to assess the water quality and stress sources in Kane'ohe Bay, Hawai'i, by using benthic foraminifera as bio-indicators. The results show that water quality in the northern sector of Kane'ohe Bay supports the growth and recovery of coral reefs, while it deteriorates around Kane'ohe City.
PACIFIC CONSERVATION BIOLOGY
(2023)
Article
Geology
Patrycja G. Dworczak, Emilia Jarochowska, Matthias Lopez Correa, Blazej Berkowski
Summary: The study presents a detailed investigation of barnacle borings in heterocoral remains from the Devonian period in Morocco. Using micro-CT scans, the authors visualize the 3D morphology, orientation, and distribution of the borings, and conduct ordination and cluster analyses. The findings suggest that these borings do not fit any known ichnotaxa and leave room for further research and discussion in the field.
ANNALES SOCIETATIS GEOLOGORUM POLONIAE
(2022)
Article
Plant Sciences
Iwona Dembicz, Juergen Dengler, Manuel J. Steinbauer, Thomas J. Matthews, Sandor Bartha, Sabina Burrascano, Alessandro Chiarucci, Goffredo Filibeck, Francois Gillet, Monika Janisova, Salza Palpurina, David Storch, Werner Ulrich, Svetlana Acic, Steffen Boch, Juan Antonio Campos, Laura Cancellieri, Marta Carboni, Giampiero Ciaschetti, Timo Conradi, Pieter De Frenne, Jiri Dolezal, Christian Dolnik, Franz Essl, Edy Fantinato, Itziar Garcia-Mijangos, Gian Pietro Giusso del Galdo, John-Arvid Grytnes, Riccardo Guarino, Behlul Guler, Jutta Kapfer, Ewelina Klichowska, Lukasz Kozub, Anna Kuzemko, Swantje Loebel, Michael Manthey, Corrado Marceno, Anne Mimet, Alireza Naqinezhad, Jalil Noroozi, Arkadiusz Nowak, Harald Pauli, Robert K. Peet, Vincent Pellissier, Remigiusz Pielech, Massimo Terzi, Emin Ugurlu, Orsolya Valko, Iuliia Vasheniak, Kiril Vassilev, Denys Vynokurov, Hannah J. White, Wolfgang Willner, Manuela Winkler, Sebastian Wolfrum, Jinghui Zhang, Idoia Biurrun
Summary: The study investigated the environmental factors influencing fine-grain beta diversity of vegetation, revealing differences in z-values among taxonomic groups. Productivity has a negative impact on z-values, while heterogeneity has a positive impact, and the effect of disturbance varies depending on type and intensity.
JOURNAL OF VEGETATION SCIENCE
(2021)
