Article
Environmental Sciences
Panitan Jutaporn, Watjanee Laolertworakul, Kitiyot Tungsudjawong, Watsa Khongnakorn, Suchat Leungprasert
Summary: This study investigated the relationships between the optical characteristics of DOM and their total THM-FP through fluorescence spectroscopy analysis, even at sites with different speciation of THMs.
Article
Environmental Sciences
Bing Yi, Jingtao Liu, Wei He, Xiaoli Lu, Xu Cao, Xiaorui Chen, Xianjiang Zeng, Yuxi Zhang
Summary: The direction and quantity of surface water - groundwater interaction in alpine-arid zones can be tracked using multiple tracers. This study used excitation-emission matrix spectroscopy combined with parallel factor analysis to reveal the optical variations in dissolved organic matter in groundwater and surface water with various interactions. The fluorescence spectra were found to be a reliable indicator for identifying the interaction processes from surface water to groundwater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Zhe Wang, Ruixia Han, Azeem Muhammad, Dong-Xing Guan, Eric Zama, Gang Li
Summary: In peri-urban critical zones, the interaction between dissolved organic matter (DOM) and heavy metals in soil is crucial for understanding the biogeochemical cycles of both organic matter and heavy metals. This study explored the correlative distribution of DOM and heavy metals in peri-urban areas through soil sampling and spectroscopic analysis. The results showed that the optical characteristics of DOM and the distribution of heavy metals were affected by seasons and land-use changes. Aromatic and humic substances were found to be more favorable in binding with certain heavy metals. The presence of humic fractions also decreased the bioavailability of Cd and Pb. These findings provide valuable insights into the biogeochemical cycling of DOM and heavy metals in peri-urban soil environments.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Mohamad Rangga Sururi, Mila Dirgawati, Suprihanto Notodarmojo, Dwina Roosmini, Prama Setia Putra, Adam Dzaky Rahman, Chairul Candra Wiguna
Summary: This study investigated CDOM in two urbanized watersheds, examined its changes in two different conventional WTPs, and identified potential surrogate parameters for CDOM compounds. The results showed the presence of tryptophan-like and humic-like compounds. CDOM quantity correlated with FI and BIX, indicating pollution. WTP Dago had the best CDOM removal, while high tryptophan-like concentrations impaired the capability of WTPs to reduce CDOM.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Haoyu Ren, Xin Yao, Feiyang Ma, Tuantuan Fan, Huanguang Deng, Yinghao Zhang
Summary: Nansi Lake is the largest lake along the eastern route of China's SNWDP, with spatial and temporal differences in DOM properties between its upper and lower areas. Protein-like substances play a significant role in influencing DOM properties in April and July.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Tuantuan Fan, Xin Yao, Haoyu Ren, Feiyang Ma, Li Liu, Xiaojia Huo, Tong Lin, Haiyan Zhu, Yinghao Zhang
Summary: This study investigated the spatial differences in compositions, molecular weight structures, and binding mechanisms between dissolved organic matter (DOM) and copper (Cu2+) in Dongping Lake. The results showed that the DOM in the lake exhibited specific differences in space, components, and molecular weights, which have significant implications for understanding the behavior and bioavailability of heavy metals in lakes.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Haoyu Ren, Tuantuan Fan, Xin Yao, Feiyang Ma, Li Liu, Junde Ming, Shitong Wang, Yinghao Zhang, Huanguang Deng
Summary: Biodegradation plays a crucial role in determining the properties and metal binding behavior of dissolved organic matter (DOM) in Dongping Lake. Through various spectroscopic techniques, it was found that biodegradation leads to a decrease in protein-like substances and an increase in humification substances in the lake. Additionally, the study revealed differences in DOM properties and sources among different areas, with Area C showing a stronger bioavailability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Yangzhi Liu, Shanshan Zhou, Yu Fu, Xiumei Sun, Tiejun Li, Chenghu Yang
Summary: Characterization of biochar-derived dissolved organic matter (DOM) from six macroalgae was conducted to explore its potential applications. Pyrolysis temperature and extraction solution pH significantly influenced the DOM characteristics. Fluorescence excitation-emission matrix spectroscopy with PARAFAC analysis identified five humic-like substances and one protein-like substance. The proportion of protein-like substance was lower than that of humic-like substances in MBDOM, regardless of extraction solution pH. The study revealed that DOM from macroalgal biochar is more autochthonous and humified compared to the corresponding biomass.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Xiaoliang Chen, Lin Deng, Yong Chen, Dong Wan
Summary: With the increasing amount of wastewater discharges, the influence of treated effluent on the photochemistry of natural receiving waters has become more significant. The effect of treatment operations on the photo-reactivity of dissolved organic matter (DOM) has gained attention, as well-established correlations between spectroscopic measurements and photochemical behaviors become unreliable in treated DOM. This research investigates the variations of optical and photochemical properties of DOM after ozonation and explores the correlations between fluorescence and reactive species photo-production through parallel factor analysis (PARAFAC).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Agricultural Engineering
Xu Zhang, Yu Li, Kunxue Cui, Xinlin Zhang, Yiwen Sun, Zimin Wei
Summary: This study investigated the interaction among dissolved organic matter (DOM) components, environmental factors, and oxytetracycline (OTC) tolerant bacteria during chicken manure composting. The results showed that OTC residues in chicken manure can affect the transformation of DOM components during composting. This transformation is indirectly influenced by the OTC stress on the microbial community activity. The presence of OTC tolerant bacteria after the high temperature period of composting is positively correlated with the humification process.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Panitan Jutaporn, Natthawikran Muenphukhiaw, Phanwatt Phungsai, Suchat Leungprasert, Charongpun Musikavong
Summary: The characteristics of dissolved organic matter (DOM) have an impact on the formation of carcinogenic disinfection byproducts. This study used fluorescence and mass spectrometry analysis to investigate the effects of magnetic ion exchange resins on the characteristics and reactivity of DOM. The study found that the resins preferentially removed certain components of DOM, but had a weaker effect on other components. Treatment with the resins reduced the formation potential of disinfection byproducts. Optical and molecular analysis confirmed that the changes in DOM characteristics caused by the resin treatment were related to the formation of disinfection byproducts.
Article
Environmental Sciences
Demin Li, Zhaoyang Wang, Yixuan Yang, Mengqiao Luo, Shuai Fang, Hao Liu, Jianzhong Chai, Haibin Zhang
Summary: In this study, the binding characteristics of dissolved organic matter (DOM) and heavy metal pollutants were investigated by fluorescence spectrum analysis and complex model. The results showed that the molecular weight of DOM is closely related to its binding ability and stability, which provides theoretical support for controlling the migration, transformation, bioavailability, and stability of heavy metal pollutants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Marc Philibert, Simin Luo, Lavel Moussanas, Qingqing Yuan, Emmanuelle Filloux, Flavia Zraick, Kathleen R. Murphy
Summary: This study analyzed the fluorescence composition of surface waters and predicted aromaticity and treatability using samples from different regions and water treatment plants. Nine fluorescence components were identified and ratios between these components were found to predict chemical properties and water treatment efficacy. These findings have important implications for water treatment applications.
Article
Engineering, Environmental
Hongyang Cui, Yue Zhao, Li Zhao, Zimin Wei
Summary: This study investigates the binding properties of dissolved organic matter (DOM) with contaminants, specifically focusing on metal contaminants in the environment. The results show that composting-derived DOM can strongly complex with Hg2+ ions, particularly those with a high humification degree. Furthermore, DOM ligands with a low humification degree exhibit a higher binding speed. These findings provide important theoretical support for environmental pollution control.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Jihong Wang, Rongfang Yuan, Zhuqing Feng, Fangshu Ma, Beihai Zhou, Huilun Chen
Summary: The combination of hydrodynamic cavitation and ozone (HC + O-3) technology has attracted attention for the advanced treatment of textile printing and dyeing wastewater. This study investigated the removal efficiency and mechanism of HC + O-3, showing its effectiveness in degrading organic matter and meeting emission standards.
ENVIRONMENTAL RESEARCH
(2022)
Article
Multidisciplinary Sciences
John L. Campbell, Lindsey E. Rustad, Charles T. Driscoll, Ian Halm, Timothy J. Fahey, Habibollah Fakhraei, Peter M. Groffman, Gary J. Hawley, Wendy Leuenberger, Paul G. Schaberg
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2020)
Article
Multidisciplinary Sciences
Craig R. See, Mark B. Green, Ruth D. Yanai, Amey S. Bailey, John L. Campbell, Jeremy Hayward
Article
Environmental Sciences
R. D. Yanai, C. Wayson, D. Lee, A. B. Espejo, J. L. Campbell, M. B. Green, J. M. Zukswert, S. B. Yoffe, J. E. Aukema, A. J. Lister, J. W. Kirchner, J. G. P. Gamarra
ENVIRONMENTAL RESEARCH LETTERS
(2020)
Article
Meteorology & Atmospheric Sciences
John L. Campbell, Lindsey E. Rustad, Sarah Garlick, Noah Newman, John S. Stanovick, Ian Halm, Charles T. Driscoll, Brian L. Barjenbruch, Elizabeth Burakowski, Steven D. Hilberg, Kristopher J. Sanders, Jason C. Shafer, Nolan J. Doesken
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2020)
Article
Multidisciplinary Sciences
Lindsey E. Rustad, John L. Campbell, Charles T. Driscoll, Timothy J. Fahey, Peter M. Groffman, Paul G. Schaberg, Gary J. Hawley, Ian Halm, Frank Bowles, Wendy Leuenberger, Geoffrey Schwaner, Gabriel Winant, Brendan Leonardi
Article
Water Resources
John L. Campbell, Lindsey E. Rustad, Scott W. Bailey, Emily S. Bernhardt, Charles T. Driscoll, Mark B. Green, Peter M. Groffman, Gary M. Lovett, William H. McDowell, Kevin J. McGuire, Emma J. Rosi
Summary: The Hubbard Brook Experimental Forest was established in 1955 to study the impacts of logging on flooding and erosion. Through small watershed research, scientists have investigated element cycling and ecosystem responses to disturbances like forest management and air pollution. Early evidence of acid rain was found at the site, shaping policies for mitigation. New research at HBEF has shifted towards a more mechanistic understanding of ecosystem processes within watersheds.
HYDROLOGICAL PROCESSES
(2021)
Article
Water Resources
Mark B. Green, Linda H. Pardo, Scott W. Bailey, John L. Campbell, William H. McDowell, Emily S. Bernhardt, Emma J. Rosi
Summary: The study used machine learning algorithms to predict solute concentrations, finding that Random Forest algorithm performed slightly better than the Support Vector Machine algorithm. The most sensitive factors for predicting solute concentrations were the removal of fluorescent dissolved organic matter, pH, and specific conductance, while dissolved oxygen and turbidity were the least sensitive.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Mahnaz Valipour, Chris E. Johnson, John J. Battles, John L. Campbell, Timothy J. Fahey, Habibollah Fakhraei, Charles T. Driscoll
Summary: Process ecosystem models are important tools to study complex ecological systems and their response to disturbances. This study modified and tested the PnET-BGC model using field observations, and found that under future climate change, tree harvesting can lead to a decrease in ecosystem carbon storage, an increase in soil organic matter loss, and a challenge in maintaining soil fertility in managed forests.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Water Resources
Mark B. Green, Scott W. Bailey, John L. Campbell, Kevin J. McGuire, Amey S. Bailey, Timothy J. Fahey, Nina Lany, David Zietlow
Summary: Small catchments have served as indicators of forest ecosystem responses to changes in air quality and climate. The Hubbard Brook Experimental Forest has been monitoring water budgets and controls since 1956, showing a 30% increase in evapotranspiration starting in 2010. This increase was primarily due to increasing ET, as indicated by PET and subsurface storage indicators.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Mahnaz Valipour, Chris E. Johnson, John J. Battles, John L. Campbell, Timothy J. Fahey, Habibollah Fakhraei, Charles T. Driscoll
Summary: The biogeochemical model PnET-BGC was modified and validated using field data from experimental cutting watersheds, showing high accuracy in predicting ecosystem responses to cutting. Despite initial differences among cut watersheds, simulations consistently matched expectations and demonstrated the model's effectiveness in depicting ecosystem dynamics following forest cutting.
Article
Environmental Sciences
P. H. Templer, J. L. Harrison, F. Pilotto, A. Flores-Diaz, P. Haase, W. H. McDowell, R. Sharif, H. Shibata, D. Blankman, A. Avila, U. Baatar, H. R. Bogena, I Bourgeois, J. Campbell, T. Dirnboeck, W. K. Dodds, M. Hauken, I Kokorite, K. Lajtha, I-L Lai, H. Laudon, T. C. Lin, S. R. M. Lins, H. Meesenburg, P. Pinho, A. Robison, M. Rogora, B. Scheler, P. Schleppi, R. Sommaruga, T. Staszewski, M. Taka
Summary: This study synthesized data from sites around the globe to evaluate the effects of atmospheric nitrogen inputs and climate on stream nitrogen concentrations and fluxes. The findings indicate that atmospheric nitrogen inputs and precipitation remain important predictors for inorganic nitrogen exported from forested and grassland watersheds, despite declining nitrogen deposition over time.
Editorial Material
Biology
John L. Campbell, Charles T. Driscoll, Julia A. Jones, Emery R. Boose, Hilary A. Dugan, Peter M. Groffman, C. Rhett Jackson, Jeremy B. Jones, Glenn P. Juday, Noah R. Lottig, Brooke E. Penaluna, Roger W. Ruess, Katharine Suding, Jonathan R. Thompson, Jess K. Zimmerman
Summary: Forest and freshwater ecosystems provide important services, but climate change is affecting their species composition, structure, and function. Long-term studies are critical to understanding the impacts of climate change on these ecosystems.
Article
Environmental Sciences
Daniel Liptzin, Jens Boy, John L. Campbell, Nicholas Clarke, Jean-Paul Laclau, Roberto Godoy, Sherri L. Johnson, Klaus Kaiser, Gene E. Likens, Gunilla Pihl Karlsson, Daniel Markewitz, Michela Rogora, Stephen D. Sebestyen, James B. Shanley, Elena Vanguelova, Arne Verstraeten, Wolfgang Wilcke, Fred Worrall, William H. McDowell
Summary: Atmospheric deposition of dissolved organic carbon (DOC) plays an important role in the carbon cycle of terrestrial ecosystems. The concentration of DOC and precipitation are the key factors influencing the deposition of DOC, with higher concentrations observed in tropical regions. Seasonal variations in DOC concentration were observed, with higher concentrations during the growing season in temperate regions and during the dry season in tropical regions. Long-term data sets showed significant declines in DOC concentration, which may be attributed to decreases in anthropogenic emissions.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Forestry
Ruth D. Yanai, Alexander R. Young, John L. Campbell, James A. Westfall, Charles J. Barnett, Gretchen A. Dillon, Mark B. Green, Christopher W. Woodall
Summary: Statistical confidence in estimates of timber volume, carbon storage, and other forest attributes is influenced by uncertainty in field measurements. This study compared measurements made by field crews and quality assurance crews in the US Forest Service's Forest Inventory and Analysis program. The results showed that measurement uncertainty is generally small, but higher for certain variables requiring judgment. Uncertainties in basal area, timber volume, and aboveground biomass were negligible when scaled up to larger areas. Understanding sources of uncertainty is important for forest monitoring, inventory management, and policy decision making.
CANADIAN JOURNAL OF FOREST RESEARCH
(2022)
Article
Water Resources
Ge Pu, John L. Campbell, Mark B. Green, Jeff L. Merriam, David Zietlow, Ruth D. Yanai
Summary: Stream fluxes are often reported without considering uncertainty, which makes it difficult to evaluate findings or improve monitoring programs. This study conducted a Monte Carlo analysis to estimate the uncertainty in streamflow and solute fluxes in a forested watershed over a 6-year period. The results showed that uncertainty in solute fluxes varied among different solutes, with the analysis of solute concentration being the main source of uncertainty.
HYDROLOGICAL PROCESSES
(2023)