Article
Engineering, Environmental
Dennys Leyva, Muhammad Usman Tariq, Rudolf Jaffe, Fahad Saeed, Francisco Fernandez-Lima
Summary: Dissolved Organic Matter (DOM) is a significant component of the global carbon cycle. This study used high-resolution mobility and ultrahigh-resolution Fourier transform ion cyclotron resonance tandem mass spectrometry (FT-ICR MS/MS) to compare four solid phase extracted (SPE) DOM samples from three freshwater ecosystems. Comparison of structural families revealed dissimilarities in the structural footprint of the samples. Inclusion of isomeric content in the structural family description suggested additional transformation pathways and/or source variations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yingxin Shang, Zhidan Wen, Kaishan Song, Ge Liu, Fengfa Lai, Lili Lyu, Sijia Li, Hui Tao, Junbin Hou, Chong Fang, Chen He, Quan Shi, Ding He
Summary: This study demonstrates the diverse sources and compositions for humic-rich lakes and protein-rich lakes in large-scale regions across China, linking them to optical components and molecular high-resolution mass spectrometry properties.
Article
Engineering, Environmental
Yingxin Shang, Zhidan Wen, Kaishan Song, Ge Liu, Fengfa Lai, Lili Lyu, Sijia Li, Hui Tao, Junbin Hou, Chong Fang, Chen He, Quan Shi, Ding He
Summary: DOM is crucial for the global carbon biogeochemical cycle in aquatic ecosystems, with diverse sources and compositions across different lake regions. Humic-rich lakes exhibit more complex molecular compositions and higher aromaticity compared to protein-rich lakes.
Article
Environmental Sciences
Martin R. Kurek, Aron Stubbins, Travis W. Drake, Thorsten Dittmar, Jose M. S. Moura, R. Max Holmes, Helena Osterholz, Johan Six, Jose N. Wabakanghanzi, Bienvenu Dinga, Miyuki Mitsuya, Robert G. M. Spencer
Summary: The study compares the composition of dissolved organic matter (DOM) in the Congo and Amazon rivers. The results show that the quality of DOM in the Congo River remains stable across different hydrological conditions, while the composition of DOM in the Amazon River is highly susceptible to changes in hydrology. The DOM in the Congo River is more terrestrial in nature, while the DOM in the Amazon River is more characteristic of aquatic DOM. Additionally, the Congo River is more efficient in exporting specific formulae compared to other rivers.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Chen He, Yuanbi Yi, Ding He, Ruanhong Cai, Chunmao Chen, Quan Shi
Summary: Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS) has been widely used to analyze the molecular composition of dissolved organic matter (DOM) in different ecosystems. This study compared 67 DOM samples from various ecosystems, revealing significant variations in the molecular composition of DOM among different ecosystems. The results provide insights into the biogeochemical cycling of DOM and highlight the need for a comprehensive molecular fingerprint database of DOM across a wider range of ecosystems.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Ying Wu, Boris P. Koch, Xiaona Wang, Matthias Witt, Xiaolu Wang, Hongyan Bao, Shuchai Gan, Gerhard Kattner, Jing Zhang
Summary: Understanding the composition and transformation of dissolved organic matter (DOM) in river systems is crucial for predicting the impact of human activities. This study used advanced techniques to analyze the chemical differences of DOM collected from different regions in the Changjiang basin. The results showed that land-use practices and human activities significantly influenced the quality and composition of DOM, and seasonal variations also played a role in altering the DOM composition and riverine carbon flux in anthropogenically disturbed river systems.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Mourad Harir, Kaelin M. Cawley, Norbert Hertkorn, Philippe Schmitt-Kopplin, Rudolf Jaffe
Summary: This study investigated the temporal evolution of the molecular compositions and structural features of dissolved organic matter (DOM) in Hillsboro Canal, Florida, under simulated sunlight exposure. It was found that the composition and structure of DOM changed during photo-irradiation, which has significant implications for the speciation of nitrogen and sulfur heteroatoms and their connection to inorganic nutrients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Engineering, Environmental
Weixin Shi, Wan-E Zhuang, Jin Hur, Liyang Yang
Summary: Dissolved organic matter (DOM) is essential in determining water quality, with monitoring techniques like absorption spectroscopy and FT-ICR-MS providing insights into DOM composition. The complexity and diversity of DOM pose challenges in water treatment, highlighting the importance of understanding DOM composition for optimizing treatment processes.
Article
Environmental Sciences
Martin R. Kurek, Karen E. Frey, Francois Guillemette, David C. Podgorski, Amy Townsend-Small, Christopher D. Arp, Anne M. Kellerman, Robert G. M. Spencer
Summary: Arctic lakes play an important role in storing and transporting carbon, but the relationships between the quantity and composition of dissolved organic matter (DOM) in these lakes are not well understood. This study investigates the spatial and seasonal variations in DOM cycling in Arctic lakes, revealing that the composition of DOM is highly seasonal and influenced by factors such as lake depth. As the Arctic warms, changes in hydrology and ice cover are expected to impact DOM processing and carbon fluxes in these lakes.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2022)
Article
Engineering, Environmental
Xiaodong Li, Jialun Shen, Huizhen Cao, Wenwen Zhang, Zongquan Sun, Fujun Ma, Qingbao Gu
Summary: Persulfate (PS)-based advanced oxidation technology can effectively remediate organically contaminated groundwater by inducing structural transformation of dissolved organic matter (DOM). This study comprehensively analyzed the changes in structural characteristics of DOM during PS oxidation, using optical spectroscopy and high-resolution mass spectrometry. The results showed a reduction in aromaticity and molecular weight of DOM, with different trends observed in different DOM components. The sequential oxidation responses of functional groups and the transformation pathways of DOM were also uncovered.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Microbiology
Yu Wang, Rui Xie, Yuan Shen, Ruanhong Cai, Chen He, Qi Chen, Weidong Guo, Quan Shi, Nianzhi Jiao, Qiang Zheng
Summary: This study investigated the interactions between phytoplankton-derived dissolved organic matter (DOM) and heterotrophic prokaryotes at the molecular level. The findings revealed the importance and mechanisms of these interactions in the marine elemental cycle.
MICROBIOLOGY SPECTRUM
(2022)
Article
Environmental Sciences
Xinyi Huang, Yuzhen Liang, Qianting Ye, Zecong Ding, Fu Liu, Zhenqing Shi
Summary: The molecular fractionation of dissolved organic matter (DOM) at the mineral-liquid interfaces in soil changes its molecular composition, thus affecting its reactivity, such as proton and metal binding properties. Understanding the compositional changes of DOM molecules after adsorptive fractionation by minerals is crucial for predicting the cycling of organic carbon (C) and metals in the ecosystem.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
M. Behnke, J. B. Fellman, D. D'Amore, S. M. Gomez, R. G. M. Spencer
Summary: This study investigates the composition of terrestrial dissolved organic matter (DOM) in different landscape types of Southeast Alaska's temperate rainforest. The results show that both the source and processing of DOM play a significant role in determining its composition. Furthermore, climate change is predicted to have an impact on DOM export to the coastal ocean.
Article
Environmental Sciences
Geert Hensgens, Oliver J. Lechtenfeld, Francois Guillemette, Hjalmar Laudon, Martin Berggren
Summary: Decomposition of litter produces dissolved organic matter (DOM) that significantly impacts soil carbon sequestration. Different litter sources exhibit varying chemical properties and degradability, influencing the dynamics of DOM and carbon sequestration in soil. In-depth molecular analyses of litter-derived DOM provide insights into the complex interactions within soil systems.
Article
Engineering, Environmental
Yuyang Li, Yongqiang Zhou, Lei Zhou, Yunlin Zhang, Hai Xu, Kyoung-Soon Jang, Dolly N. Kothawala, Robert G. M. Spencer, Erik Jeppesen, Justin D. Brookes, Thomas A. Davidson, Fengchang Wu
Summary: Large reservoirs are hotspots for carbon emissions, and the input and decomposition of terrestrial dissolved organic matter (DOM) from upstream catchments play a significant role in carbon emissions. Rainstorm events increase the input of DOM and subsequently enhance the emissions of CO2 and CH4. This study found that CO2 and CH4 emissions significantly increased after rainstorm events, and they were influenced by nitrogen and phosphorus levels, DOM absorption, specific UV absorbance, and terrestrial humic-like fluorescence.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Geosciences, Multidisciplinary
Thomas S. Bianchi, Sandra Arndt, William E. N. Austin, Douglas Benn, Sebastien Bertrand, Xingqian Cui, Johan C. Faust, Katarzyna Koziorowska-Makuch, Christopher M. Moy, Candida Savage, Craig Smeaton, Richard W. Smith, Jaia Syvitski
EARTH-SCIENCE REVIEWS
(2020)
Article
Engineering, Environmental
Huan Chen, Kuo-Pei Tsai, Yina Liu, Nikola Tolic, Sarah D. Burton, Rosalie Chu, Tanju Karanfil, Alex T. Chow
Summary: Copper-based algaecides are used to control algae blooms after wildfires, leading to higher reactivity of dissolved organic matter in forming disinfectant byproducts. The disappeared DOM during disinfection had higher average molecular weight and double-bond equivalent, indicating larger MW and more double bonds/rings as preferable DBP precursors. The treatments with Cu2+ addition showed higher reactivity in forming N-nitrosodimethylamine, while the control group without Cu2+ had lower DOM chlorine reactivity in forming carbonaceous and oxygenated DBPs.
Editorial Material
Environmental Sciences
Joshua L. Breithaupt, Joseph M. Smoak, Thomas S. Bianchi, Derrick Vaughn, Christian J. Sanders, Kara R. Radabaugh, Michael J. Osland, Laura C. Feher, James C. Lynch, Donald R. Cahoon, Gordon H. Anderson, Kevin R. T. Whelan, Brad E. Rosenheim, Ryan P. Moyer, Lisa G. Chambers
Summary: Breithaupt et al. investigated the increase in organic carbon burial rates in coastal wetlands over the past century, concluding that this trend is related to an actual increase in organic carbon burial. They reject Parkinson's claims by providing evidence against them, particularly highlighting that auto-compaction correction is not applicable for organic carbon burial measurements.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2021)
Article
Environmental Sciences
B. Zhao, P. Yao, T. S. Bianchi, Z. G. Yu
Summary: The study revealed that there is selective decay of younger, more labile OC from both marine and terrestrial sources in the suspended particulate matter of the Changjiang River, while there is less decay of terrestrial OC along the Yellow River sediment dispersal pathway. The burial efficiency of OC in the mud areas of the Bohai Sea is significantly higher than in the Yellow and East China Seas, due to rapid deposition. The burial flux of biospheric OC in the Eastern China Marginal Seas was estimated to be 7.00 +/- 0.79 Mt yr(-1), with river damming significantly reducing OC burial and impacting the coastal ocean carbon budget.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Review
Multidisciplinary Sciences
Aron Stubbins, Kara Lavender Law, Samuel E. Munoz, Thomas S. Bianchi, Lixin Zhu
Summary: Plastic pollution has become a global issue, prompting us to consider plastics as emergent geomaterials never before seen in Earth's history. With high carbon content, plastics can rival natural organic carbon in some ecosystems, prompting geochemists to include plastics in their analyses to expedite understanding of plastics in the Earth system. Furthermore, plastics can serve as global-scale tracers to advance Earth system science.
Article
Biology
Angel Mojarro, Xingqian Cui, Xiaowen Zhang, Adam B. Jost, Kristin D. Bergmann, Jakob Vinther, Roger E. Summons
Summary: Preservation of soft tissues within carbonate concretions is determined by a competition between microbially induced authigenic precipitation and decay, with factors such as organic matter input, rate of decay, carbonate saturation, porewater velocity, and rate of authigenic precipitation playing key roles.
Letter
Multidisciplinary Sciences
Sinead M. Crotty, Thomas Bianchi, Andrew Altieri, Christine Angelini
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Shasha Song, Isaac R. Santos, Huaming Yu, Faming Wang, William C. Burnett, Thomas S. Bianchi, Junyu Dong, Ergang Lian, Bin Zhao, Lawrence Mayer, Qingzhen Yao, Zhigang Yu, Bochao Xu
Summary: The authors map the global distribution of the mixed layer in coastal ocean sediments, based on a neural network model. These observations reveal that mixing can accelerate organic matter degradation and reduce carbon storage in the coastal ocean.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Xingqian Cui, Alfonso Mucci, Thomas S. Bianchi, Ding He, Derrick Vaughn, Elizabeth K. Williams, Chuning Wang, Craig Smeaton, Katarzyna Koziorowska-Makuch, Johan C. Faust, Alain F. Plante, Brad E. Rosenheim
Summary: Research suggests that organic carbon in fjord sediments is more susceptible to decomposition, which can dampen atmospheric CO2 decrease during glacial-interglacial climate fluctuations through negative carbon cycling loops.
Article
Environmental Sciences
Judith A. Rosentreter, Goulven G. Laruelle, Hermann W. Bange, Thomas S. Bianchi, Julius J. M. Busecke, Wei-Jun Cai, Bradley D. Eyre, Inke Forbrich, Eun Young Kwon, Taylor Maavara, Nils Moosdorf, Raymond G. Najjar, V. V. S. S. Sarma, Bryce Van Dam, Pierre Regnier
Summary: This article analyzes data from 738 observation sites and finds that coastal ecosystems have a certain absorption effect on greenhouse gases in the atmosphere, but methane and nitrous oxide emissions counteract the absorption of carbon dioxide. Southeast Asia, North America, and Africa are identified as hotspots for coastal greenhouse gas absorption.
NATURE CLIMATE CHANGE
(2023)
Article
Ecology
Xiaowen Zhang, Madeline M. M. Paoletti, Gareth Izon, Gregory P. P. Fournier, Roger E. E. Summons
Summary: Compound-specific carbon isotope measurements indicate that the Barney Creek Formation, 1.64 billion years ago, was dominated by cyanobacteria and heterotrophic bacteria. The formation of the reverse tricarboxylic acid cycle in Chlorobi appears to have occurred at a later stage. However, the earliest rock record does not provide strong evidence in support of this. Through specific carbon isotope measurements, we have identified a cyanobacterially dominated ecosystem in the Barney Creek Formation, confirming phylogenomic hypotheses about the late assembly of the rTCA cycle within the Chlorobiaceae and the delayed acquisition of autotrophy.
NATURE ECOLOGY & EVOLUTION
(2023)
Article
Geosciences, Multidisciplinary
Xiaowen Zhang, Thomas S. Bianchi, Andrea J. M. Hanna, Michael R. Shields, Gareth Izon, Jack A. Hutchings, Chien-Lu Ping, Mikhail Kanevskiy, Negar Haghipour, Timothy Eglinton
Summary: Climate-driven thawing of Arctic permafrost leads to potential carbon emission, with the impact varying depending on the rate of warming and prevailing boundary conditions. Leveraging geological records to study the dynamics of Arctic permafrost with temperature change is important.
Article
Environmental Sciences
Christopher Olivares, Habibullah Uzun, Cagri Utku Erdem, Wenbo Zhang, Carl Trettin, Yina Liu, Sarah D. Burton, Errol W. Robinson, Tanju Karanfil, Alex T. Chow
Summary: The study evaluated the impacts of prescribed burns on water quality and found that the burned watershed had an increased ratio of dissolved organic carbon (DOC) to dissolved total nitrogen (DTN) and also showed higher haloacetic acid yield after the burn. Despite similar molecular size distributions, more features were found in the burned watershed, suggesting that prescribed fire poses only moderate impacts on water quality.
Article
Ecology
Thomas S. Bianchi, Madhur Anand, Chris T. Bauch, Donald E. Canfield, Luc De Meester, Katja Fennel, Peter M. Groffman, Michael L. Pace, Mak Saito, Myrna J. Simpson
Summary: Biogeochemistry plays a crucial role in addressing environmental issues related to global change and quality of air, water, and soil. To achieve reliable predictions and solutions, further integration of disciplines is needed, focusing on incorporating mechanisms like evolutionary adaptation and utilizing insights from social sciences. Collaboration with various stakeholders and enhancing accessibility of biogeochemical knowledge to policy makers and educators will be key for success in addressing challenges and facilitating sustainable and equitable responses by society.