Article
Geology
Qianqi Zhang, Bo Wang, Daran Zheng, Jiahao Li, Xueheng Wang, Edmund A. Jarzembowski, Chunpeng Xu, Ting Li, Haichun Zhang, Michael S. Engel
Summary: Resource pulses play a significant role in nutrient transport between aquatic and terrestrial ecosystems. The discovery of complex mayfly mating-swarm behavior in the Early Jurassic highlights the ecological significance of insects in deep-time terrestrial ecology.
Article
Geosciences, Multidisciplinary
Quanyou Liu, Peng Li, Zhijun Jin, Xinping Liang, Dongya Zhu, Xiaoqi Wu, Qingqiang Meng, Jiayi Liu, Qi Fu, Jianhua Zhao
Summary: The study highlights the significant impact of sulfate reduction on organic matter preservation, with higher SRI values leading to extensive organic matter consumption and lower SRI values resulting in minimal degradation effects.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geology
Daianne Hofig, Yi Ge Zhang, Liviu Giosan, Qin Leng, Jiaqi Liang, Mengxiao Wu, Brent Miller, Hong Yang
Summary: This study provides detailed geological and paleoclimatological analysis of the Miocene Clarkia paleolake in northern Idaho, USA. They found that the deposition of the lake occurred approximately 15.78 million years ago, spanning around 840 years, coinciding with the end of the main phase of eruptions from the Columbia River Basalt Group during the Miocene Climate Optimum.
Article
Microbiology
Yun Fang, Jun Liu, Jian Yang, Geng Wu, Zhengshuang Hua, Hailiang Dong, Brian P. Hedlund, Brett J. Baker, Hongchen Jiang
Summary: The study investigated the composition and metabolic pathways of autotrophic microorganisms in lacustrine sediments along a salinity gradient using metagenomic analysis. The results showed that salinity had a significant impact on the abundance and community composition of autotrophs, as well as their carbon fixation and glycolysis pathways. The dominant lineage and carbon fixation pathway shifted with decreasing salinity. These findings provide insights into the physiological efficiency and metabolic versatility of autotrophic microorganisms in saline environments and their response to salinity.
Article
Geochemistry & Geophysics
J. Christina Obert, Carsten Muenker, Michael Staubwasser, Daniel Herwartz, Klaus Reicherter, Guillermo Chong
Summary: This study re-evaluates the potential of 230Th/U dating for sedimentary gypsum and anhydrite samples and provides a robust analytical protocol. The results show the general applicability of the method to gypsum and anhydrite, but also indicate open-system behavior and potential contamination issues.
Article
Multidisciplinary Sciences
Daniel Marquina, Mateusz Buczek, Fredrik Ronquist, Piotr Lukasik
Summary: The study found that high ethanol concentrations indeed make insects brittle, but the effect varies significantly among species. DNA preservation is less effective at lower ethanol concentrations when stored for an extended period.
Article
Geology
Jack O. Shaw, Derek E. G. Briggs, Pincelli M. Hull
Summary: This study evaluated the global assemblage-level fossilization potential by comparing diversity data of modern marine communities with fossil occurrence data. The fossilization potential of marine genera varies between environments, while within-environment fossilization potential is lower. These differences are mainly due to representation in the rock record and sampling biases.
Article
Geochemistry & Geophysics
Danica Mitrovic, Ellen C. Hopmans, Nicole J. Bale, Nora Richter, Linda A. Amaral-Zettler, Allix J. Baxter, Francien Peterse, Pedro Miguel Raposeiro, Vitor Goncalves, Ana Cristina Costa, Stefan Schouten
Summary: Membrane-spanning archaeal lipids were examined in sediment samples from various lacustrine environments using UHPLC-HRMS. Regular isoprenoidal GDGTs and GDDs were found to be the most abundant membrane-spanning lipids in all samples.
ORGANIC GEOCHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Simone Lioy, Daniela Laurino, Riccardo Maggiora, Daniele Milanesio, Maurice Saccani, Peter J. Mazzoglio, Aulo Manino, Marco Porporato
Summary: An innovative scanning harmonic radar has been developed for tracking insects in complex landscapes, particularly effective in locating hornets in various environments. The technology provides insights into hornets' ecology and biology, such as foraging range and flying features.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Senhu Lin, Lianhua Hou, Xia Luo, Yiwen Wu
Summary: This study reveals that during periods of tephra deposition, fewer plankton is preserved in black shale, resulting in the increase of redox-sensitive trace elements and biolimiting elements while terrigenous elements decrease. The research suggests that intense volcanic eruptions caused climate cooling and affected the water column, leading to enhanced organic carbon production and preservation. It highlights the critical role of volcanic activity-induced climate change in black shale formation.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Yan Zhao, Qian Tian, Guang-Ying Ren, Ying Guo, Xiao-Ting Zheng
Summary: Five specimens of the early bird Sapeornis chaoyangensis with different preserved feathers were analyzed. The best-preserved specimen, STM 15-36, was found to have been rapidly transported into a lake by a strong rain flush and then buried quickly by terrestrial debris. The anoxic and restricted burial environment allowed for the delicate preservation of its feathers. This finding provides valuable insight into the exceptional preservation of fossil soft tissues in the Jehol Biota.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Chemistry, Physical
Yun-Mi Hur, Kyoung-Ik Min
Summary: A covalently self-assembled peptide-based hydrolase mimic with exceptional stability is reported. The nanopepzyme demonstrates hydrolase-like activity and maintains its structure under adverse environmental conditions.
Article
Multidisciplinary Sciences
K. E. Clark, R. F. Stallard, S. F. Murphy, M. A. Scholl, G. Gonzalez, A. F. Plante, W. H. McDowell
Summary: Extreme rainfall in Puerto Rico leads to high yields of particulate organic carbon. The previous yield relationships have underestimated the output of particulate organic carbon from these regions, requiring separate accounting to estimate their contributions to the geological carbon cycle.
NATURE COMMUNICATIONS
(2022)
Article
Geography, Physical
Zhixin Ma, Shixue Hu, Huaichun Wu, Xiting Liu, Changyong Zhou, Wen Wen, Qiyue Zhang, Jinyuan Huang, Xiao Min
Summary: This study reveals the relationship between exceptional preservation of the Luoping biota and high primary productivity through geochemical analysis. The findings suggest that nutrient supply from the open ocean, combined with bottom water anoxia, played a crucial role in the preservation of macrofauna in the Luoping area.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Environmental Sciences
Alison N. Olcott, Matthew R. Downen, James D. Schiffbauer, Paul A. Selden
Summary: Research on well-preserved fossil sites reveals that spiders in the Oligocene Aix-en-Provence Formation in France were preserved through sulfurization, possibly due to the presence of extracellular polymeric substances produced by diatoms. This preservation pathway may be widespread in lacustrine settings during the Cenozoic era, contributing to our understanding of various organisms.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)