Article
Engineering, Environmental
Spencer J. Washburn, Joel D. Blum, Laura C. Motta, Bridget A. Bergquist, Peter Weiss-Penzias
Summary: The study found that the isotopic composition of mercury in coastal California fogwater is relatively consistent and does not show spatial trends, similar to the isotopic composition of precipitation. Photoreduction mechanisms play a significant role in controlling the odd-MIF isotopic composition of atmospheric mercury wet deposition, highlighting the importance of understanding the processes governing atmospheric mercury deposition.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Engineering, Environmental
Emily B. Franklin, Sarah Amiri, Daniel Crocker, Clare Morris, Kathryn Mayer, Jonathan S. Sauer, Robert J. Weber, Christopher Lee, Francesca Malfatti, Christopher D. Cappa, Timothy H. Bertram, Kimberly A. Prather, Allen H. Goldstein
Summary: The organic composition of coastal sea spray aerosol, which is influenced by both human activities and biological processes, is investigated in this study. Through analyzing samples collected during a phytoplankton bloom experiment, it is found that the representation of biogenic marine organics is lower in mass spectral databases compared to marine organic pollutants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Jonathan Gropp, Qusheng Jin, Itay Halevy
Summary: This paper develops a metabolic-isotopic model of methanogenesis and explains multiple isotopic patterns in laboratory and natural settings. It also provides predictions for the biomass-specific methanogenesis rates.
Article
Environmental Sciences
Rongrong Xie, Ling Zhen, Xianzhong Wu, Jiabing Li
Summary: Identifying the mixing processes of waters and currents in tidal reach is essential for environmental management in protecting freshwater resources and preventing water pollution. This study conducted three field investigations using isotopes and salinity to differentiate water flows in a typical tidal reach. Results showed that delta D and delta 18O values decreased from August to November and significantly increased in April. The saltwater zone had higher values due to stronger evaporation. Based on the model, freshwater, transition zone, and saltwater had average contributions of 51.50%, 36.93%, and 11.57% respectively. Our research provides important insights for understanding isotopes in estuarine regions and their applications in environmental management.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Wenshuai Li, Xiao-Ming Liu, Kun Wang, F. Joel Fodrie, Toshihiro Yoshimura, Yong-Feng Hu
Summary: The study investigated isotope fractionation between biogenic carbonates and modern seawater by measuring K concentration, phase, and isotopic composition in calcified skeletons from various calcifying species. Deep-sea corals showed the largest isotopic variability while the K isotopic composition of marine biogenic carbonates is not strongly temperature-dependent but correlates with skeletal K phases.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Microbiology
Yang Dong, Jianwei Zhang, Ruirui Chen, Linghao Zhong, Xiangui Lin, Youzhi Feng
Summary: Soil salinity has significant impacts on microbial community composition and metabolic activity. This study found that salinity drives a shift in bacterial community composition and reduces microbial activity. In severe-salinity soils, a diverse microbial community with a higher abundance of salt-tolerant species was observed. Addition of labile organic amendments can alleviate salt restrictions on microbial activity.
Article
Chemistry, Physical
I. Campana, J. G. Wynn, J. Iglesias-Cibanal, A. Benito-Calvo, A. Alvaro-Gallo, L. Bermejo, A. Perez-Gonzalez, J. M. Bermudez de Castro
Summary: The isotopic composition of water used in pre-treatment solutions has an influence on the isotopic composition of clay minerals. While HCl pre-treatment significantly alters the clay minerals, H2O2 pre-treatment has negligible effects. The variability in the alteration mainly depends on clay mineralogy, especially the quantity of smectite.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Analytical
Jiangyi Zhang, Zhifang Xu
Summary: In this study, desalination was achieved by vacuum extraction, and the oxygen and hydrogen isotopes ratios were measured using cavity ring-down spectroscopy. The proposed vacuum extraction desalination procedure overcame the influence of salts on isotopes, enabling the rapid extraction of a large number of samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Haoyu Diao, Philipp Schuler, Gregory R. Goldsmith, Rolf T. W. Siegwolf, Matthias Saurer, Marco M. Lehmann
Summary: Recent studies have questioned the interpretation of plant water isotopes obtained through cryogenic vacuum distillation (CVD) and proposed the hypothesis of H-atom exchange between water and organic tissue. We conducted experiments to test the uncertainties in the isotopic composition of CVD-extracted water and found that the offsets between hydrogen and oxygen isotope ratios were inversely proportional to the absolute amount of water being extracted, but not related to sample relative water content. The pattern of hydrogen isotope ratios was more pronounced for materials with exchangeable H atoms. However, if large samples of natural isotope abundance are used, the methodological uncertainties can be controlled.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Environmental Sciences
Riaz Bibi, Hee Yoon Kang, Dongyoung Kim, Jaebin Jang, Changseong Kim, Goutam K. Kundu, Chang-Keun Kang
Summary: The study examined the biochemical composition of seston along a salinity gradient in Gwangyang Bay, Korea. The results highlighted the significant impact of physiological and taxonomic features of phytoplankton on the sestonic biochemical composition, indicating that ecosystem processes in the bay are largely dependent on phytoplankton dynamics influenced by factors such as temperature, photoperiod, and nutrient conditions.
Article
Geochemistry & Geophysics
Vijayananda Sarangi, Sohom Roy, Prasanta Sanyal
Summary: Interpretation of paleoecological proxies in fire-prone biomes is challenging due to thermal modifications of plant biomarkers during vegetation fires. Controlled experiments showed reduction in organic carbon content and leaf wax concentrations in burned plant leaves, along with shifts in stable isotope values.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Biodiversity Conservation
Anton Uspenskiy, Zakhar Zhidkov, Boris Levin
Summary: This study investigated the composition and distribution of coastal fish species in the eastern Gulf of Finland, as well as the impact of environmental factors on the fish community. The results showed that despite a highly heterogeneous environment, the coastal fish community demonstrated a low degree of heterogeneity. Salinity, filamentous algae presence, and macrophytes presence were identified as the three key environmental variables influencing the coastal fish community.
Article
Ecology
Wei Zhang, Ali Bahadur, Wasim Sajjad, Xiukun Wu, Gaosen Zhang, Guangxiu Liu, Tuo Chen
Summary: Coastal salinity impacts soil microbial communities, which in turn affect nutrient cycles. This study examined seasonal variations in fungal communities in a salt-tolerant plant population. Results showed higher richness and diversity in the spring, with variations in phyla and orders across seasons. The abundance and diversity of fungi were correlated with organic carbon and nitrogen, showing changes in fungi functional groups across seasons.
Article
Mathematics
Gonzalo Astray, Benedicto Soto, Enrique Barreiro, Juan F. Galvez, Juan C. Mejuto
Summary: This study proposed different techniques to estimate the isotope composition, salinity, and temperature in the Mediterranean Sea using five different variables. The random forest models showed the best prediction accuracy for the querying phase and can be used to predict the isotope composition, salinity, and temperature effectively. Ultimately, these models could be useful for research works that require the use of past data for these variables.
Article
Biodiversity Conservation
Yipeng Wang, Rui Zhang, Yuehua Song, Fan Zhang, Junjie Hu, Tiegang Li, James Russell, Xiaoxiao Yu, Jialei Yang, Zhiyong Liu, Yu Li, Minglei Guan, Qi Han, Guihong Li
Summary: The study identified sources of environmental pollutants in the western coastal areas of the Yellow Sea by analyzing stable and radioactive isotopes of black carbon and polycyclic aromatic hydrocarbons in sediment samples. The results showed that coal combustion was the major contributor to pollution in the area, followed by liquid fossil fuels, petrogenic sources, and biomass combustion. Stable and radioactive carbon isotopes were found to be useful in quantitatively tracing the sources of contamination.
ECOLOGICAL INDICATORS
(2021)
Article
Ecology
Selin Ersoy, Christine E. Beardsworth, Anne Dekinga, Marcel T. J. van der Meer, Theunis Piersma, Ton G. G. Groothuis, Allert Bijleveld
Summary: Individual differences in behavior, particularly exploration speed, are associated with foraging tactics and diet in red knots. Faster explorers tend to engage in visual foraging, while slower explorers mainly consume hard-shelled prey. These findings suggest that personality traits play a role in shaping foraging strategies and dietary preferences in birds.
JOURNAL OF ANIMAL ECOLOGY
(2022)
Article
Geography, Physical
Iuliana Vasiliev, Marcel T. J. van der Meer, Marius Stoica, Wout Krijgsman, Gert-Jan Reichart, Sergei Lazarev, Geanina A. Butiseaca, Eva M. Niedermeyer, Elmira Aliyeva, Christian G. C. van Baak, Andreas Mulch
Summary: Landlocked basins like the Caspian Sea are highly sensitive to hydrological changes, especially when disconnected from the global ocean. Using compound-specific hydrogen isotope data, palaeohydrological and palaeoenvironmental changes in the region were reconstructed, showing a connection with the Arctic domain and the Black Sea during different geological stages.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Correction
Microbiology
Svetlana E. Belova, Nikolai V. Ravin, Timofey A. Pankratov, Andrey L. Rakitin, Anastasia A. Ivanova, Alexey V. Beletsky, Andrey V. Mardanov, Jaap S. Sinninghe Damste, Svetlana N. Dedysh
FRONTIERS IN MICROBIOLOGY
(2022)
Review
Microbiology
Irene Sanchez-Andrea, Charlotte M. van der Graaf, Bastian Hornung, Nicole J. Bale, Monika Jarzembowska, Diana Z. Sousa, W. Irene C. Rijpstra, Jaap S. Sinninghe Damste, Alfons J. M. Stams
Summary: In acid drainage environments, moderately acidophilic sulfate-reducing bacteria (SRB) play a crucial role in attenuating extreme conditions by precipitating metals as sulfides and neutralizing acidity. A new species of moderately acidophilic SRB, Acididesulfobacillus acetoxydans gen. nov. sp. nov. strain INE, is identified with the ability to grow at pH 3.8. Bioreactor studies reveal that strain INE alkalinizes its environment, especially at lower pH, and has the ability to completely oxidize organic acids to CO2. Comparative proteogenomic and membrane lipid analysis suggest that the presence of saturated ether-bound lipids in the membrane serves as a protection mechanism against acid stress.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Microbiology
Irina S. Kulichevskaya, Anastasia A. Ivanova, Nataliya E. Suzina, Jaap S. Sinninghe Damste, Svetlana N. Dedysh
Summary: In this study, a novel freshwater planctomycete of the genus 'Anatilimnocola' was characterized and described. This new species exhibits distinct characteristics in terms of cell morphology, growth conditions, and genomic features compared to known freshwater planctomycetes. The findings of this study are significant in understanding the diversity and ecological functions of planctomycetes in freshwater environments.
ANTONIE VAN LEEUWENHOEK INTERNATIONAL JOURNAL OF GENERAL AND MOLECULAR MICROBIOLOGY
(2022)
Article
Ecology
Ulrike Hanz, Philip Riekenberg, Anna de Kluijver, Marcel van der Meer, Jack J. Middelburg, Jasper M. de Goeij, Martijn C. Bart, Erik Wurz, Ana Colaco, Gerard C. A. Duineveld, Gert-Jan Reichart, Hans-Tore Rapp, Furu Mienis
Summary: This study reveals how deep-sea sponge grounds survive in a food-limited environment through stable isotope analysis. Sponge with high microbial abundance utilize dissolved resources and efficient recycling pathways to sustain themselves and other organisms. Additionally, sponges provide organic material to support the otherwise food-limited associated fauna, contributing to the thriving deep-sea ecosystems.
FUNCTIONAL ECOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Dimitry Y. Sorokin, Alexander G. Elcheninov, Tatjana Khizhniak, Michel Koenen, Nicole J. Bale, Jaap S. Sinninghe Damste, Ilya V. Kublanov
Summary: This study isolated and classified several alkaliphilic haloaloarchaea from hypersaline soda lakes in southwestern Siberia. These archaea can grow using various starch-like substrates and exhibit moderate alkaliphilic and low Mg-demanding properties.
SYSTEMATIC AND APPLIED MICROBIOLOGY
(2022)
Article
Geochemistry & Geophysics
Eduardo Q. Alves, Kita D. Macario, Rita Scheel-Ybert, Fabiana M. Oliveira, Andre Carlo Colonese, Paulo Cesar Fonseca Giannini, Renato Guimaraes, Stewart Fallon, Marcelo Muniz, David Chivall, Christopher Bronk Ramsey
Summary: This study investigates a Late Holocene shell mound in Southern Brazil using a multidisciplinary approach. The results reveal a negative local correction for the marine reservoir effect (MRE) in the area and a diet high in marine proteins for the inhabitants. The study also discusses various complications encountered when conducting MRE studies using shell mound sites.
Article
Multidisciplinary Sciences
Diana X. Sahonero-Canavesi, Melvin F. Siliakus, Alejandro Abdala Asbun, Michel Koenen, F. A. Bastiaan von Meijenfeldt, Sjef Boeren, Nicole J. Bale, Julia C. Engelman, Kerstin Fiege, Lora Strack van Schijndel, Jaap S. Sinninghe Damste, Laura Villanueva
Summary: Bacterial membranes are composed of fatty acids (FAs) ester-linked to glycerol-3-phosphate, while archaea have membranes made of isoprenoid chains ether-linked to glycerol-1-phosphate. Some bacteria can produce ether-bound membrane-spanning lipids (MSLs), which are likely precursors of relevant molecules in paleoclimatology. The enzymes responsible for their production have been discovered, and the building blocks of these lipids are branched fatty acids. Phylogenomic analyses reveal a wider diversity of potential MSL-producing bacteria than previously thought, which has important implications for the evolution of lipid membranes.
Review
Biochemistry & Molecular Biology
Anandi Tamby, Jaap Sinninghe S. Damste, Laura Villanueva
Summary: The deep-sea environment is characterized by extreme conditions, including high hydrostatic pressure and near-freezing temperature. Piezophiles, microorganisms adapted to high pressure, have developed specific membrane lipid strategies to withstand these conditions, such as increased abundance of lipids containing unsaturated and branched-chain fatty acids with increasing hydrostatic pressure. However, not all piezophiles employ this strategy, highlighting the need for further understanding of the effects of hydrostatic pressure on microbial lipid membranes.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2023)
Article
Ecology
Suzanne S. H. Poiesz, Johannes I. J. Witte, Marcel T. J. van der Meer, Zwanette Jager, Karline E. R. Soetaert, Tjisse van der Heide, Henk W. van der Veer
Summary: Spatial variability in fish food-web structure in the Wadden Sea was studied by comparing stomach content and bulk stable isotopes of fish species caught in the Ems and Marsdiep basins. The findings showed that most fish species in both basins were generalist feeders, with a few key prey species driving the food web. The study also revealed spatial differences in prey preferences, which were likely influenced by local predator and prey abundances.
MARINE ECOLOGY PROGRESS SERIES
(2023)
Article
Geosciences, Multidisciplinary
Devika Varma, Katrin Hättig, Marcel T. J. van der Meer, Gert-Jan Reichart, Stefan Schouten
Summary: The TEX86 paleothermometer is widely used for reconstructing past sea water temperatures, but the specific export depths represented by this proxy are still unclear. Through studying paleotemperature proxies from two pairs of closely located cores from Chilean and Angola margins, this study provides new insights into constraining the depths recorded by the TEX86 proxy. The study shows that the TEX86 records were statistically indistinguishable between the core sites, indicating the usefulness of this approach for paleo-reconstructions.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2023)
Review
Parasitology
Ana Born-Torrijos, Philip Riekenberg, Marcel T. J. van der Meer, Milen Nachev, Bernd Sures, David W. Thieltges
Summary: Wild animals infected with parasites can alter their hosts' trophic niches and resource flows. It is important to consider the infection status when studying the trophic positions of wild organisms.
TRENDS IN PARASITOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Gabriella M. Weiss, Julie Lattaud, Marcel T. J. van der Meer, Timothy Eglinton
Summary: This study uses isotopic ratios and compound abundance proxies of organic compounds to reconstruct environmental changes in the Baltic Sea during the Holocene. The results show changes in water source and vegetation diversification at different periods, highlighting the utility of these methods in understanding past environmental changes.
CLIMATE OF THE PAST
(2022)
Article
Environmental Sciences
Bernhard Aichner, Bernd Wunnemann, Alice Callegaro, Marcel T. J. van der Meer, Dada Yan, Yongzhan Zhang, Carlo Barbante, Dirk Sachse
Summary: This study evaluates the ecological and hydrological changes in Lake Hala, China and finds that the retreat of glaciers and increased meltwater discharge are the key drivers of ecological responses, with the lake ecosystem being more sensitive to temperature changes than large-scale monsoonal variability.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)