Article
Biodiversity Conservation
Thomas G. Sim, Graeme T. Swindles, Paul J. Morris, Andy J. Baird, Dan J. Charman, Matthew J. Amesbury, Dave Beilman, Alex Channon, Angela V. Gallego-Sala
Summary: This study utilized new transfer functions to reconstruct water-table depth (WTD) and pH in Svalbard peatlands, enabling a greater understanding of the long-term impact of climate change on these ecosystems.
ECOLOGICAL INDICATORS
(2021)
Article
Biochemistry & Molecular Biology
Ruben Gonzalez-Miguens, Milcho Todorov, Quentin Blandenier, Clement Duckert, Alfredo L. Porfirio-Sousa, Giulia M. Ribeiro, Diana Ramos, Daniel J. G. Lahr, David Buckley, Enrique Lara
Summary: In this study, the authors used Arcellinida testate amoebae as a model to test the paradigm of morphological stasis in protists. The results showed a lack of conservatism in shell outlines and widespread morphological convergences between far-related taxa. In addition, the authors revised the systematics and established a new infraorder and two new genera.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Geography, Physical
Majed N. Turkistani, Eduard G. Reinhardt, David A. Kynaston, Janok P. Bhattacharya
Summary: This study investigates the associations between ancient deltaic environments and foram-iniferal and testate amoebae assemblages and finds clear relationships between test morphology and depositional environment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Immunology
Aurelie Hennebique, Julien Peyroux, Camille Brunet, Amandine Martin, Thomas Henry, Masa Knezevic, Marina Santic, Sandrine Boisset, Max Maurin
Summary: The study explored the interactions between Francisella bacteria and amoebae in aquatic environments, revealing that amoebae likely enhance the survival of these bacteria in water. The complex interactions between bacteria and amoebae depend on the specific species of Francisella considered.
EMERGING MICROBES & INFECTIONS
(2021)
Article
Biodiversity Conservation
Rafael Carballeira, Xabier Pontevedra-Pombal
Summary: Testate amoebae are important bioindicators of Sphagnum peatland ecosystems, which are threatened wetland types with a delicate biogeochemical balance. A study on chemical parameters and testate amoebae diversity in the western Iberian Peninsula revealed an inverse relationship between diversity and conservation status, influenced by anthropogenic activities and geographical patterns of disturbance.
Article
Environmental Sciences
Jean Claude Ndayishimiye, Tian Lin, Pascaline Nyirabuhoro, Gan Zhang, Wenjing Zhang, Yuri Mazei, Hossein Ganjidoust, Jun Yang
Summary: This study focused on examining the impact of human activities on chemical pollutants influx and environmental transformations in a large subtropical reservoir in south China. The research used a multi-proxy approach based on sediment core analysis and found that the development of the reservoir experienced two distinct stages, influenced by both anthropogenic sources and climatic factors. The study highlighted the significant relationship between testate amoebae community dynamics and environmental conditions, indicating a stronger impact of human disturbance on the ecosystem compared to natural environmental changes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
M. A. Davies, J. W. McLaughlin, M. S. Packalen, S. A. Finkelstein
Summary: Wetlands are the largest natural source of methane, yet the roles of source region and paleoclimate in explaining the variability in Holocene atmospheric methane concentrations remain poorly constrained. The study on Hudson Bay Lowlands (HBL) shows that total methane flux is closely related to the increasing area of land emerging from below sea level in the Middle Holocene, and due to lower evapotranspiration in a wetter and cooler climate in the Late Holocene, methane fluxes remained high.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Environmental Sciences
Marie Colette, Linda Guentas, Peggy Gunkel-Grillon, Nolwenn Callac, Luc Della Patrona
Summary: Plant culture integration within aquaculture activities can bring economic and environmental benefits. Investigation shows that halophytes can utilize nutrients from shrimp farming for remediation purposes, with deep root species being more efficient.
MARINE POLLUTION BULLETIN
(2022)
Article
Biodiversity Conservation
Andrew J. Hamer, Barbara Barta, Attila Bohus, Blanka Gal, Denes Schmera
Summary: Roads pose a significant threat to amphibian species through habitat loss, fragmentation, and direct mortality. Understanding how species respond to linear infrastructure is crucial for effective conservation efforts. The study found that roads had a stronger impact on amphibian abundance than the combined effects of roads and habitat amount, especially highways negatively affected amphibian communities within a wide road-effect zone up to 1 km from ponds.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Paleontology
Nawaf A. Nasser, Braden R. B. Gregory, David Singer, R. Timothy Patterson, Helen M. Roe
Summary: Testate lobose amoebae of the order Arcellinida are a diverse group of shelled protists found in various environments. The family Difflugidae includes many species and subspecies, with molecular evidence suggesting that test morphology is more important in categorizing distinct taxa than test composition. The reclassification of Difflugia bidens as the type species of genus Erugomicula highlights the importance of test morphology in taxonomy.
PALAEONTOLOGIA ELECTRONICA
(2021)
Article
Environmental Sciences
Kevin D. Barrett, Patricia Sanford, Sara C. Hotchkiss
Summary: Peatland complexes in the humid highlands of Hawai'i are crucial for biodiversity and freshwater resources. Analysis of testate amoebae and Cladocera in Hawaiian montane peatlands on Kohala revealed the importance of surface moisture in controlling species distribution. The study provides insights into the paleohydrological history of Hawaiian peatlands and the sensitivity of testate amoeba composition to changing environmental conditions.
JOURNAL OF PALEOLIMNOLOGY
(2021)
Review
Veterinary Sciences
Susan D. Healy, B. Wren Patton
Summary: The study of fish cognitive ecology originated from research on the use of visual cues by homing pigeons. This research played a crucial role in developing experimental methods to investigate the role of visual cues in fish navigation. It led to the formulation of hypotheses and predictions regarding cue preferences in fish and the study of cognitive abilities in various fish species. Furthermore, it also contributed to the understanding of fish pain and welfare.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Microbiology
Kenneth Dumack, Ferry Siemensma, Steffen Clauss
Summary: Thecofilosea is a class in Cercozoa that mainly consists of freshwater algivores. In this study, we cultured and characterized many isolates of Thecofilosean amoebae using both morphological and molecular approaches. Rare spine-bearing taxa in Thecofilosea have not been molecularly characterized before. By isolating single cells from the habitat of Pamphagus armatus and sequencing their SSU rDNA, we found that Pamphagus armatus belongs to the family Rhizaspididae (Tectofilosida, Thecofilosea). Consequently, we propose transferring Pamphagus armatus and the closely related species Lecythium spinosum to the genus Rhizaspis.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2022)
Article
Environmental Sciences
Aliano J. Tette-Pomarico, Cesar E. Tamaris-Turizo, Angela J. Motta Diaz, Pedro Eslava-Eljaiek
Summary: The aim of this research is to determine the effects of hydroperiod on the functional diversity of aquatic and semiaquatic macroinvertebrates in five temporary ponds in Magdalena, Colombia. The study found that the response of the macroinvertebrate communities was associated with the hydroperiod of the ponds.
Article
Microbiology
Michelle M. McKeown, Edward A. D. Mitchell, Matthew J. Amesbury, Quentin Blandenier, Dan Charman, Clement Duckert, Thomas P. Roland, Graeme T. Swindles, Jamie R. Wood, Janet M. Wilmshurst
Summary: New Zealand is a hotspot of biodiversity for macroscopic organisms, but its microbial diversity is poorly documented. Testate amoebae are mainly found in wetlands and the South Island of NZ, with greater diversity at higher latitudes. Future research should aim to broaden geographical and ecological ranges, with the prediction that the diversity gradient will change over time.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2021)
Article
Biodiversity Conservation
Juraj Hrabovsky, Dusan Starek, Katarina Holcova, Kamil Zagorsek
Summary: The study indicates that early in the Central Carpathian Paleogene Basin, coastal upwelling had an impact on the distribution of shallow-water benthic organisms, leading to the development of cool-water carbonates and warm-water carbonates in different locations. The heterogeneous distribution of sea water temperature and nutrients was characteristic for recent ecosystems, with upwelling promoting suspension feeders and cool-water coralline algae growth.
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2022)
Correction
Biodiversity Conservation
Juraj Hrabovsky, Dusan Starek, Katarina Holcova, Kamil Zagorsek
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2022)
Article
Engineering, Electrical & Electronic
Jan Dudak, Jan Zemlicka, Jana Mrzilkova, Petr Zach, Katarina Holcova
Summary: This study demonstrates the applicability of Timepix large-area hybrid-pixel photon-counting detectors for high-resolution X-ray imaging in biology research, providing enhanced contrast-to-noise ratio and high spatial-resolution images. Compared to traditional digital imaging devices, these detectors have more advantages.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Neurosciences
Alice Abbondanza, Irina Ribeiro Bas, Martin Modrak, Martin Capek, Jessica Minich, Alexandra Tyshkevich, Shahed Naser, Revan Rangotis, Pavel Houdek, Alena Sumova, Sylvie Dumas, Veronique Bernard, Helena Janickova
Summary: Acetylcholine plays an important role in modulating striatal activity and controlling striatal-dependent behaviors. However, the mechanisms by which acetylcholine affects striatal signaling are not fully understood. This study found that beta2-containing nicotinic acetylcholine receptors (nAChRs) are primarily expressed in cholinergic interneurons in the striatum. Deleting beta2-containing nAChRs in striatal neurons led to alterations in several behavioral domains, suggesting their significant role in behavior.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Paleontology
Matic Rifl, Frantisek Vacek, Katarina Holcova
Summary: Decomposers of organic matter and biogenic carbonates play a significant role in biogeochemical cycles within carbonate ramps and platforms. Microboring communities exhibit zonal patterns in carbonate depositional settings, influenced by factors such as water dynamics and sedimentation rate. This study aims to test these patterns in shallow-water Upper Triassic carbonates in the Southern Alps of Slovenia, utilizing a novel approach to ichnofacies studies.
MARINE MICROPALEONTOLOGY
(2022)
Article
Geochemistry & Geophysics
Filip Scheiner, Lukas Ackerman, Katarina Holcova, Jan Rejsek, Hauke Vollstaedt, Jana Durisova, Vaclav Santolik
Summary: The Nd-143/Nd-144 isotopic composition of foraminifera is a useful proxy for tracing specific water masses in paleoceanographic studies, but its applicability is limited by the amount of material needed for analysis. In this study, we analyzed foraminiferal samples weighing only 300-500 μg and showed that even very low Nd loads can yield precise results. We also found significant naturally induced Nd isotopic variability among different foraminiferal species.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geography, Physical
Jitka Kopecka, Katarina Holcova, Mihovil Brlek, Filip Scheiner, Lukas Ackerman, Jan Rejsek, Rastislav Milovsky, Viktoria Baranyi, Sean Gaynor, Ines Galovic, Vlatko Brcic, Mirko Belak, Koraljka Bakrac
Summary: This study provides a detailed paleoenvironmental and depositional history of the Middle Miocene deposits from Mt. Pozeska Gora (the east part of Croatia). The results show that the marine system of the Mediterranean-Paratethys region in the Middle Miocene was influenced by global climatic changes, resulting in two episodes of flooding and significant changes in water temperature, nutrient contents, and salinity.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Biodiversity Conservation
Jan Geist, Katarina Holcova, Lucie Vankova, Martin Mazuch, Martin Kostak
Summary: Based on a systematic revision of older collections, new sediment sampling and analyzing data, the stratigraphic range of Jurassic sedimentation in the northern part of the Bohemian Massif has been extended, at least from the Bajocian until the Tithonian.
PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
(2023)
Article
Biology
Katarina Holcova, Filip Scheiner
Summary: The oscillations in pH can have an impact on the morphologies, abundances, and compositions of calcareous nannoplankton assemblages. The corrosion and overgrowth of coccoliths are influenced by factors such as pH, seawater chemistry, mineral composition of sediment, and the presence of bacteria. Changes in the composition of assemblages occur due to corroded or overgrown coccoliths, and extreme pH oscillations can result in unidentifiable coccolith structures.
Article
Humanities, Multidisciplinary
Victory Armida Janine Jaques, Jakub Trubac, Jiri Rathousky, Tomas Cajthaml, Katarina Holcova
Summary: The use of calcareous nannofossils for provenance analysis in cultural heritage, specifically in paintings, is an important topic. This study aims to develop a disaggregation method to extract more determinable nannofossils from painting micro-samples. The method allows for the determination of binders fatty acids and has a low impact on the painting samples.
Article
Multidisciplinary Sciences
Victory Armida Janine Jaques, Eva Zikmundova, Jiri Holas, Tomas Zikmund, Jozef Kaiser, Katarina Holcova
Summary: Cross-section preparation of painting micro-samples is essential for the analysis and preservation of painted artworks. However, the use of resin embedding can lead to degradation and loss of information. This study enhances the preparation process by shaping the CDD layer, allowing for extraction of micro-samples without compromising sample integrity.
SCIENTIFIC REPORTS
(2022)
Correction
Multidisciplinary Sciences
Victory Armida Janine Jaques, Eva Zikmundova, Jiri Holas, Tomas Zikmund, Jozef Kaiser, Katarina Holcova
SCIENTIFIC REPORTS
(2022)
Article
Endocrinology & Metabolism
David Habart, Adam Koza, Ivan Leontovyc, Lucie Kosinova, Zuzana Berkova, Jan Kriz, Klara Zacharovova, Bas Brinkhof, Dirk-Jan Cornelissen, Nicholas Magrane, Katerina Bittenglova, Martin Capek, Jan Valecka, Alena Habartova, Frantisek Saudek
Summary: We developed IsletSwipe, a platform consisting of a web interface and a mobile application, for experts to exchange graphical opinions and facilitate consensus formation in deep learning-based islet counting. The platform was tested in a pilot study with nine experts from three centers. The study demonstrated the functionalities and use case scenarios, and showed that IsletSwipe is a suitable tool for consensus finding.
Article
Geosciences, Multidisciplinary
Nina Trinajstic, Mihovil Brlek, Sean P. Gaynor, Julie Schindlbeck-Belo, Sanja Suica, Radovan Avanic, Steffen Kutterolf, Kuo-Lung Wang, Hao-Yang Lee, Katarina Holcova, Jitka Kopecka, Viktoria Baranyi, Valentina Hajek-Tadesse, Koraljka Bakrac, Vlatko Brcic, Duje Kukoc, Monika Milosevic, Ivan Misur, Reka Lukacs
Summary: The Middle Miocene volcaniclastic layers on Mt. Medvednica play a significant role in stratigraphy and understanding of depositional environments in the Carpathian-Pannonian Region. Through an integrated approach of volcanological, geochronological, and paleontological analyses, the age, deposition environment, and provenance of two volcaniclastic horizons have been deciphered.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Meeting Abstract
Biochemistry & Molecular Biology
Helena Janickova, Alice Abbondanza, Martin Capek, Sylvie Dumas, Veronique Bernard
JOURNAL OF NEUROCHEMISTRY
(2022)
