Article
Ecology
Florian Caillon, Katharina Besemer, Peter Peduzzi, Jakob Schelker
Summary: Flood events are recognized as important occasions for the transfer of soil microbes to stream ecosystems, affecting bacterial community composition and diversity. Soil inoculation during high flow events in pre-alpine streams and the Oberer Seebach alters stream bacterial community composition, with higher bacterial diversity observed during high flow in headwater streams.
Article
Biology
Abigail C. Jackson, Jesse Jorna, John M. Chaston, Byron J. Adams
Summary: This study investigated microbial communities in the McMurdo Dry Valleys of Antarctica using genome sequencing and found unique microbial communities in potential refugia. The presence of these communities confirms the significance of glacial legacies in structuring soil microbial communities in Antarctica.
Article
Environmental Sciences
Celine Lavergne, Polette Aguilar-Munoz, Natalia Calle, Frederic Thalasso, Maria Soledad Astorga-Espana, Armando Sepulveda-Jauregui, Karla Martinez-Cruz, Laure Gandois, Andres Mansilla, Rolando Chamy, Maialen Barret, Lea Cabrol
Summary: Freshwater ecosystems play a significant role in methane emissions and this study investigated the effects of temperature on microbial community structure and methane production pathways in sub-Antarctic lake sediments. The research found that temperature had a significant impact on methane production rates, particularly when methanogenic precursors such as acetate and H-2/CO2 were introduced.
ENVIRONMENT INTERNATIONAL
(2021)
Article
Microbiology
Pablo Almela, Ana Justel, Antonio Quesada
Summary: This study examines the diversity and composition of soil bacterial communities in ice-free areas of Antarctica, finding significant differences in microbial communities in soils exposed for different periods of time. While microbial communities in recently deglaciated soils show little variation along the soil profile, there is a high degree of heterogeneity in communities found at different sampling locations. The taxonomic composition of soil bacteria is more homogeneous among distant locations, with a small percentage of shared sequences among 90% of samples but a larger overlap among 80% of samples per location.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Agronomy
Zita Bednar, Anna Vaupel, Simon Bluemel, Nadine Herwig, Bernd Hommel, Verena Haberlah-Korr, Lukas Beule
Summary: Flower strip mixtures with different plant species and durations have varying effects on soil biodiversity and microbial communities. Perennial flower strip mixtures can increase earthworm and soil microbial abundance and diversity, while annual flower strips have limited effects. In addition, non-tilled planting methods are beneficial for the diversity and relative abundance of soil fungi.
Article
Microbiology
Nicholas B. Dragone, Jessica B. Henley, Hannah Holland-Moritz, Melisa Diaz, Ian D. Hogg, W. Berry Lyons, Diana H. Wall, Byron J. Adams, Noah Fierer
Summary: This study analyzed the impact of environmental properties on the taxonomic and functional diversity of microbial communities in Antarctic soils. It found that elevation is the key factor affecting the structure and composition of soil prokaryotic communities, with higher elevations harboring less diverse communities with distinct genomic attributes and life-history strategies. This study highlights the importance of studying community shifts across environmental gradients to improve our understanding of microbial diversity and adaptation strategies in extreme environments.
Article
Soil Science
Zhibin Guo, Chang-An Liu, Keke Hua, Daozhong Wang, Shuixia Wan, Chuanlong He, Linchuan Zhan
Summary: This study investigates the impact of different cropland management systems on microbial diversity in soil during the transition period from winter to summer. The results show that bacteria and fungi respond differently to seasonal changes, and the changes in diversity between treatments do not sync with each other. The complex interaction between land management and sampling time affects bacterial diversity more than fungal diversity. It is suggested that assessing fungal diversity between management practices can be done without considering temporal variation.
Article
Ecology
Lea C. Wunder, David A. Aromokeye, Xiuran Yin, Tim Richter-Heitmann, Graciana Willis-Poratti, Annika Schnakenberg, Carolin Otersen, Ingrid Dohrmann, Miriam Roemer, Gerhard Bohrmann, Sabine Kasten, Michael W. Friedrich
Summary: This study explored the microbial communities in coastal sediments influenced by increased iron input in permanently cold marine sediments around South Georgia. Results showed that sulfate reduction prevailed in one site, while iron reduction occurred at the others, correlating with distinct microbial communities. The discovery of the previously unrecognized Desulfuromonadales Sva1033 capable of dissimilatory iron reduction highlights the importance of iron and sulfate reduction processes in shaping these microbial communities.
Article
Genetics & Heredity
Jean-Christophe Gagnon, Samuel Beauregard-Tousignant, Jean-Sebastien Marcil, Cassandre Sara Lazar
Summary: The deep terrestrial subsurface harbors microbial populations that contribute to biogeochemical cycles over geological time. Our analysis of microbial communities from deep, isolated brine aquifers in two regions revealed differences in diversity and community structure, suggesting an impact of site age and composition.
Article
Soil Science
Jingyi Ding, Samantha Kay Travers, David John Eldridge
Summary: The study found a significant relationship between soil surface condition and microbial communities in forests and non-forests, with higher microbial diversity associated with better plant structure and less litter characteristics. Bacterial and fungal communities showed different responses to changes in soil surface attributes in forests, with certain bacterial phyla benefiting and others losing out, while fungal phyla responded consistently.
Article
Soil Science
Solomon Oloruntoba Samuel, Kazuki Suzuki, Rasit Asiloglu, Naoki Harada
Summary: This study aims to investigate the effects of soil as a microbial source on the assemblage of the endophytic bacterial communities in rice roots. The results showed that the bacterial community in the soils added as a microbial source differed among the soil types, which affected the bacterial community in the hydroponic solution and consequently reflected in the endophytic bacterial community assemblage. Bacterial diversity and richness differed significantly with respect to the microbial sources.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Multidisciplinary Sciences
Yifei Sun, Chengyuan Tao, Xuhui Deng, Hongjun Liu, Zongzhuan Shen, Yaxuan Liu, Rong Li, Qirong Shen, Stefan Geisen
Summary: The soil bacterial microbiome plays a crucial role in ecosystem functioning. Organic fertilization can enhance the resistance and resilience of bacterial communities in extreme drought and subsequent rewetting compared to conventional fertilizers. This study indicates that organic fertilization can enhance the stability of the soil microbiome and ensure the recovery of specific bacterial-driven ecosystem functions after rewetting.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Environmental Sciences
Liping Huang, Jiangyu Ye, Kemei Jiang, Yichao Wang, Yunyi Li
Summary: The study revealed that oil pollution reduces correlations between co-existing bacteria and alters core genera related to oil metabolism. Under oil pollution pressure, indigenous bacteria Gammaproteobacteria was domesticated as biomarker and enzyme expression related to the metabolism of toxic hydrocarbons was enhanced. Functional pathways of xenobiotics biodegradation were also stimulated under oil contamination.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Soil Science
Zhenguang Lv, Regin Ronn, Hao Liao, Christopher Rensing, Wenli Chen, Qiaoyun Huang, Xiuli Hao
Summary: Soil aggregates play a crucial role in providing spatially diverse microhabitats for microorganisms. This study explores the impact of aggregate sizes on the legacy effect of copper pollution on bacterial and protistan communities. The results suggest that aggregate sizes influence the distribution patterns and diversity of these microbial communities under both polluted and unpolluted conditions.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Ecology
Madhav P. Thakur, Wim H. van Der Putten, Fariha Apon, Ezio Angelini, Branko Vres, Stefan Geisen
Summary: Climate change can disrupt food chains, affecting predator-prey relationships in microbial communities. Extreme heat events can have a more detrimental impact on microbial prey communities than on their predators, possibly due to thermal acclimation mechanisms in predators. The resilience of predators and prey in rhizosphere microbial communities may vary based on species-specific effects and time dynamics.
FUNCTIONAL ECOLOGY
(2021)
Article
Construction & Building Technology
Yunkang Rao, Yu Ding, Ajit K. Sarmah, Daxiang Liu, Bo Pan
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Environmental Sciences
Sumaraj, Zixi Xiong, Ajit K. Sarmah, Lokesh P. Padhye
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Review
Environmental Sciences
Hai Nguyen Tran, Giang Truong Le, Dong Thanh Nguyen, Ruey-Shin Juang, Joerg Rinklebe, Amit Bhatnagar, Eder C. Lima, Hafiz M. N. Iqbal, Ajit K. Sarmah, Huan-Ping Chao
Summary: The presence of SARS-CoV-2 in water and wastewater is primarily through patients' stools and masks, while disinfection is effective in inactivating most coronaviruses. However, the survival period of coronaviruses in water varies depending on several factors.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Sai Praneeth, Laureen Saavedra, Maria Zeng, Brajesh K. Dubey, Ajit K. Sarmah
Summary: By replacing sand with biochar as filler material in cement, the flexural strength of the cement mortar can be improved, and thermal conductivity and density can be reduced. The addition of biochar also increases the porosity of the mortar, leading to a decrease in CO2 emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Goldy De Bhowmick, Rowena M. Briones, Soren Thiele-Bruhn, Ramkrishna Sen, Ajit K. Sarmah
Summary: The study found that activated macroalgae biochar (MACAC) and microalgae biochar (MICAC) exhibited superior adsorption performance for metformin hydrochloride (MET), with maximum adsorption occurring at a pH of 7 and up to 76% removal of MET. Activation strengthened chemisorption, leading to the formation of oxygen-containing surface functional groups, and the lowest zeta potential observed at pH 7 enhanced the electrostatic force of attraction for both biochars.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Hadi Akbarian, Farhad Mahmoudi Jalali, Mohammad Gheibi, Mostafa Hajiaghaei-Keshteli, Mehran Akrami, Ajit K. Sarmah
Summary: Decision Support System (DSS) is a novel approach for smart, sustainable controlling of environmental phenomena and purification processes. In this study, Fusarium Solani fungi are utilized as the engine of the toluene bioremediation procedure for the monitoring part of DSS. The behavior of the fungi is estimated by machine learning algorithms, and the control stage of DSS is provided by integrated modeling and analysis techniques. The findings show the importance of ventilation intensity and fungi load/biological waste in the process.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Farzaneh Feizi, Ajit K. Sarmah, Ropru Rangsivek, Kapish Gobindlal
Summary: This study investigated the competitive effects of different fractions of wastewater treatment plant effluent organic matter on the adsorption of an organic micro pollutant in a fixed bed column. The results showed that the presence of effluent organic matter inhibited the adsorption of the pollutant, resulting in decreased adsorption capacity and extended breakthrough time.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Xiaojun Lai, Nuoyi Huang, Suresh C. Pillai, Ajit K. Sarmah, Yang Li, Guangwen Wang, Hailong Wang
Summary: This study investigated the influence of Cl- concentration on the formation mechanism of reactive species and oxidation products in the Fe2+/PDS system. The results showed that Cl- complexed with Fe2+ to increase the formation path of SO4 center dot- radicals. The dosage of Fe2+ and pH(0) value affected the morphology of Fe2+-Cl- complex and consequently influenced the composition of reactive species.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Savitri Savitri, Febelyn Reguyal, Ajit K. Sarmah
Summary: In this study, empty fruit bunch oil palm was converted into biochar and used for the adsorptive removal of manganese from water. Results showed that the biochar produced at 350 degrees Celsius had the highest adsorption capacity for manganese. The study demonstrated the potential of low-cost and environmentally friendly biochar for the remediation of manganese ions in water.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Hasan Karkoosh, Meththika Vithanage, Ajit K. Sarmah
Summary: This study investigated the feasibility of two novel engineered biochar composites, one involving the pyrolysis of cabbage leaves pre-treated with anthocyanin and the other involving a post-treatment with kaolinite. Results showed that the kaolinite-biochar composite had the highest adsorption capacity for lead and copper, while the anthocyanin-biochar composite had the highest adsorption capacity for metoprolol. The enhancement of adsorption was attributed to an increase in certain oxygen functional groups. The findings suggest that anthocyanin and kaolinite could be used as alternative sustainable materials for modifying biochar and remediating toxic elements and pharmaceuticals in water media.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Zhibo Liu, Xiaoyue Duan, Ajit K. Sarmah, Xuesong Zhao, Xin Ren, Bo Sun
Summary: In this study, a novel three-dimensional cobalt-manganese bimetallic layered double hydroxide graphene hydrogel was prepared for the degradation of sulfamethoxazole (SMX) in water. The results showed that the CoMn-LDHs/rGO system exhibited a high degradation efficiency of over 98% under optimal conditions. Furthermore, the catalytic degradation performance of the material remained good after multiple cycles, and the leaching of metal ions was effectively prevented. The study also revealed the degradation mechanism and calculated the transformation of SMX.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Na Zhang, Febelyn Reguyal, Sai Praneeth, Ajit K. Sarmah
Summary: A novel biochar-based magnetic nanocomposite (GSMB) was synthesized from white tea waste. The sorption properties and regeneration of GSMB for Pb(II) and Cd(II) were studied. The sorption process was dominated by chemisorption rather than physisorption, and Langmuir and Temkin models best described the sorption isotherms for Pb(II) and Cd(II) respectively. Iron oxides played a key role in the adsorption process, and the adsorption mechanisms involved surface electrostatic attraction and surface complexation. Among the regenerating agents, 0.1 M EDTA-2Na was the most effective for Pb(II) desorption. The adsorbent showed potential for reuse with approximately 54% of its adsorption capacity remained after three sorption-desorption cycles.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
Wei Lin Ng, Adrian Chun Minh Loy, David Mcmanus, Ashwani K. Gupta, Ajit K. Sarmah, Sankar Bhattacharya
Summary: The production of cyclic carbonates is crucial for carbon capture and utilization. Ethylene carbonate (EC) is an important cyclic carbonate used in various industries, but its current synthesis methods face sustainability challenges. To address the growing demand for green chemistry, three greener alternative pathways for EC synthesis have been proposed, involving carbon-based reactants and ethylene glycol derived from biodiesel waste. This Perspective provides a quantitative and qualitative assessment of alternative EC synthesis pathways, highlighting sustainable routes, advancements in kinetic and operational methods, and differences in reactions from thermodynamic, safety, and green production perspectives. The direct carboxylation of CO2 with ethylene glycol emerges as a promising green synthesis route, but challenges such as catalyst development and water inhibition remain. Future prospects for overcoming these challenges in the green manufacturing of EC are discussed, providing valuable insights for advancing carbon capture and utilization.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Environmental Sciences
Sanandam Bordoloi, Chandra Bhanu Gupt, Ajit K. Sarmah
Summary: This minireview explores the characteristics of MPs in landfill leachate and the changes in soil hydro-mechanical properties caused by their accumulation. It also discusses the possible changes in barrier clay based on diffused double layer theory. Additionally, it briefly discusses future research directions to improve current design guidelines for landfill liner systems.
CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH
(2022)
Article
Environmental Sciences
Goldy De Bhowmick, Ajit K. Sarmah
Summary: This report aims to provide an understanding of the current status of microplastic-based biosolid application and identify potential risks to human and ecological health. Solutions to mitigate these risks are proposed. However, due to the large scale of microplastic contamination, it may take several years of investigation to implement certain rules and regulations.
CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH
(2022)