Article
Engineering, Civil
Fan Xia, Zaihua Liu, Min Zhao, Haibo He, Qiufang He, Chaowei Lai, Xuejun He, Zhen Ma, Yang Wu, Song Ma
Summary: This study investigated the burial process of recalcitrant dissolved organic matter (RDOM) in Erhai lake, China, and found that autochthonous organic matter plays a significant role in the lake's carbon sink. It provides a new perspective for studying the stability of autochthonous organic matter and highlights the importance of studying carbon sinks in inland lakes.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Filipe Banha, Antonio M. Diniz, Rosa Olivo del Amo, Franscisco J. Oliva-Paterna, Pedro M. Anastacio
Summary: Public engagement is crucial for the effective management of Invasive Alien Species (IAS) and biosecurity campaigns. Surveys are necessary to monitor stakeholders' perceptions and risk behaviors regarding IAS. The survey conducted on the Iberian Peninsula revealed differences in IAS awareness between countries and stakeholder groups. Raising awareness about the impacts of IAS on human socio-economic aspects and health is important for education campaigns.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Wenlong Zhang, Pengcheng Zhou, Shenyang Pan, Yi Li, Li Lin, Lihua Niu, Longfei Wang, Huanjun Zhang
Summary: Expanding stress tolerance and adaptation potential of primary producers is crucial for the restoration and management of aquatic ecosystems. This study identified key microbes and the pathway through which they enhance turbidity tolerance of primary producers using mesocosm experiments and multivariate statistical methods. The research found a significant decrease in the biomass of primary producers with increasing turbidity. Significant differences in microbial community under various turbidity pressures were identified, and key microbes that may expand the turbidity tolerance of primary producers were further identified. The structural equation model revealed the pathway through which microbial communities help primary producers cope with turbidity pressure by enhancing the microbial loop. These findings provide new insights and a theoretical basis for resisting turbidity stress and managing and restoring aquatic ecosystems.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Emil Boros, Zarina Inelova, Zsuzsanna Lanczos, Zsolt Vegvari
Summary: This study conducted a multi-spatial scale analysis of nutrient cycling and waterbird guilds in saline-soda aquatic ecosystems in Kazakhstan. The results showed that waterbird guilds are closely related to environmental attributes of inland saline waters through complex trophic linkages. The density, biomass, and diversity of waterbird guilds were correlated with productivity metrics of habitats and water depth. The study also found significant correlations between guild density, biomass, diversity, and environmental attributes for different types of waterbird guilds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Marine & Freshwater Biology
Songjie He, Kanchan Maiti, Christopher M. Swarzenski, Tracy Elsey-Quirk, Gina N. Groseclose, Dubravko Justic
Summary: This study investigated the porewater carbonate chemistry of three coastal marshes with different salinities in Barataria Basin, Louisiana, USA, and its impact on the surrounding water bodies. The findings showed that porewater DIC and TA increased with depth and were generally higher during warmer months. The flooding regime of the marshes had a significant influence on TA and DIC concentrations, and the export of DIC and TA from coastal marshes has the potential to contribute to coastal acidification.
ESTUARINE COASTAL AND SHELF SCIENCE
(2022)
Article
Environmental Sciences
Jie Yi, Quanchao Zeng, Tangyingze Mei, Shengnan Zhang, Qi Li, Mingxia Wang, Wenfeng Tan
Summary: Intensive agriculture practices, such as continuous chemical fertilization, can reduce soil ecoenzymatic activities and alter microbial community composition. Soil acidification poses a threat to sustainable agricultural development. The study reveals variations in ecoenzymatic stoichiometry under different land use types and pH gradients, highlighting the co-limitation of soil microorganisms by carbon and phosphorus.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Barbara Franco Vieira, Renata Piacentini Rodriguez, Eduardo Coutinho de Paula, Gustavo Ferreira Simoes
Summary: The study aimed to investigate strategies for prompt adaptation and operation without the need for additives to enable the sulfidogenic process to occur while maintaining a close to neutral pH. By testing different sources of electrons and fractionating the substrate supply, the research achieved efficient sulfate removal without the use of neutralizing additives, presenting characteristics favorable for further methane generation treatment of the effluent.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Soil Science
Chen Chen, Xinli Chen, Han Y. H. Chen
Summary: Soil microorganisms play a crucial role in biodiversity and ecosystem processes. Recent meta-analyses reveal that elevated nitrogen (N) has an overall negative impact on soil microbial biomass, although individual studies show divergent effects. The effects of N deposition on soil microbial biomass vary across ecosystems and are influenced by N amount, ecosystem type, and soil pH. Regions with high N deposition rates and acidic soils, such as Eastern U.S., Southern Brazil, Europe, and Eastern Asia, are hotspots for microbial biomass loss.
Article
Geochemistry & Geophysics
Yongjie Hu, Chunfang Cai, Dawei Liu, Yanyan Peng, Tianyuan Wei, Ziwen Jiang, Rongtu Ma, Lei Jiang
Summary: This study distinguishes pyrites generated by microbial sulfate reduction (MSR) from thermochemical sulfate reduction (TSR) based on analyses on barite, pyrite, calcite, and dolomite for carbon and sulfur isotopes, and REY compositions. MSR-derived pyrites show seawater-like REY patterns and superchondritic Y/Ho ratios, with wide range of delta S-34 values correlated with arsenic contents, possibly through cryptic sulfur cycles driven by arsenic. TSR-derived pyrites have non-seawater-like REY patterns, chondritic Y/Ho ratios, and small sulfur isotopic fractionations, with associated calcites showing LREE enrichment and negative delta C-13 values. The combination method from REY patterns, delta C-13 and delta S-34 values on micro-sized pyrite and associated calcites effectively distinguishes MSR from TSR.
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Microbiology
Melanie L. Blanchette, Mark A. Lund
Summary: This research aimed to determine the environmental drivers of pelagic microbe assemblages in Australian coal pit lakes. The study found that water quality and microbial assemblages in pit lakes varied significantly across space and time, with most taxa being rare. Microbial communities were influenced by environmental variables, however, no single variable was consistently significant spatially or temporally.
Article
Environmental Sciences
Sanni L. Aalto, Suvi Suurnakki, Mathis von Ahnen, Marja Tiirola, Per Bovbjerg Pedersen
Summary: Woodchip bioreactors are effective in removing nitrate from aquaculture effluents, with microbial communities including sulfate reducing bacteria (SRB) and sulfate oxidizing bacteria (SOB) playing crucial roles. The conditions within the bioreactors shape the microbial communities, with similar design and operational settings leading to similar functions. Autotrophic denitrifiers can significantly contribute to H2S consumption and nitrate removal in woodchip bioreactors, improving their overall environmental benefit.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Engineering, Civil
Cizhang Hui, Yi Li, Wenlong Zhang, Chi Zhang, Lihua Niu, Longfei Wang, Huanjun Zhang
Summary: Microbial communities play essential roles in aquatic ecosystems, and mathematical models along with advances in molecular biology tools are crucial for studying their composition and dynamics. However, models focusing solely on metabolic processes have limitations in aquatic ecosystems, as they fail to simulate hydrodynamic processes which can significantly impact microbial community composition and functions. Therefore, incorporating hydrodynamics into microbial models is vital for a more in-depth investigation.
JOURNAL OF HYDROLOGY
(2022)
Article
Multidisciplinary Sciences
Huawei Zhu, Liru Xu, Guodong Luan, Tao Zhan, Zepeng Kang, Chunli Li, Xuefeng Lu, Xueli Zhang, Zhiguang Zhu, Yanping Zhang, Yin Li
Summary: Inspired by marine microbial ecosystems, researchers have designed a four-species microbial community that converts light into electricity, mimicking the ecological structure of marine ecosystems. Using conductive hydrogel as a matrix, the community is assembled into a miniaturized bionic ocean-battery with a maximum power of 380 μW, operating stably for over one month.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Li Gu, Jian-yi Wu, Zu-lin Hua
Summary: This study focuses on the impact of Escherichia coli invasion on benthic microbial communities during plant decomposition, revealing that E. coli plays a critical role in the geochemical functions of benthic microbes, leading to structural changes in the benthic microbial network and nutrient cycling pathways.
ENVIRONMENTAL POLLUTION
(2021)
Article
Archaeology
Peter Davies, Susan Lawrence, Jodi Turnbull, Ian Rutherfurd, James Grove, Ewen Silvester, Mark Macklin
GEOARCHAEOLOGY-AN INTERNATIONAL JOURNAL
(2020)
Article
Spectroscopy
Aleicia Holland, Paul J. McInerney, Michael E. Shackleton, Gavin N. Rees, Nick R. Bond, Ewen Silvester
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Article
Geosciences, Multidisciplinary
Peter Davies, Susan Lawrence, Jodi Turnbull, Ian Rutherfurd, Ewen Silvester, James Grove, Mark G. Macklin
HYDROGEOLOGY JOURNAL
(2020)
Article
Environmental Sciences
Manisha Shakya, Ewen Silvester, Aleicia Holland, Gavin Rees
Summary: This study found significant differences in amino acid profiles among different macroinvertebrate taxa, with decapods having the highest total amino acid content. The study also revealed seasonal variations in amino acid profiles of decapods, with spatial variations observed only in one taxon.
Article
Engineering, Civil
Ewen Silvester, Terry Karis, Anne Yusuf, John Pengelly, Samantha Grover, Gavin N. Rees
Summary: The study found that storm events mobilized dissolved organic carbon and nitrogen, with proteins playing a key role and exhibiting different dynamics at different stages of the storm. This suggests that there is spatial and temporal separation of molecular groups within the pools of dissolved organic carbon and nitrogen, leading to changing composition of DOC through a storm cycle.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Manisha Shakya, Ewen Silvester, Gavin Rees, Leigh Stitz, Aleicia Holland
Summary: The study found that acid mine drainage can lead to significant changes in the community composition and amino acid profiles of macroinvertebrates, resulting in significantly lower taxa richness at polluted sites. There were significant variations in the AA profiles among different taxa and different river sections, reflecting the response of macroinvertebrates to AMD contamination.
ENVIRONMENTAL POLLUTION
(2021)
Article
Water Resources
Meeruppage Gunawardhana, Ewen Silvester, Oliver A. H. Jones, Samantha Grover
Summary: The study highlights the importance of evapotranspiration in the water budget of mountain peatlands in the Australian Alps, showing that it accounts for 26% of annual precipitation. The seasonally dependent biogeochemical regulation processes observed in this study can serve as a reference for evaluating the condition of peatlands under similar weather conditions.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2021)
Article
Environmental Sciences
Manisha Shakya, Ewen Silvester, Gavin Rees, Kolin Harinda Rajapaksha, Pierre Faou, Aleicia Holland
Summary: Freshwater contamination is a growing global issue, with microalgae being highly sensitive to metal pollution. This study investigated the biochemical effects of copper on Chlorella sp. and identified potential biomarkers for future research. The results demonstrated the complex mode of action of copper on Chlorella under environmentally realistic concentrations.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Marine & Freshwater Biology
Manisha Shakya, Aleicia Holland, Annaleise R. Klein, Gavin N. Rees, Jamie Laird, Jeffrey C. McCallum, Chris G. Ryan, Ewen Silvester
Summary: This study investigated the sublethal toxicity of copper on purple-spotted gudgeon sacfry. The results showed that copper caused deleterious effects on PSG at different levels, including decreased amino acid content, accumulation of copper in retinal tissues, and changes in protein structure.
AQUATIC TOXICOLOGY
(2022)
Article
Archaeology
Susan Lawrence, Peter Davies, Greg Hil, Ian Rutherfurd, James Grove, Jodi Turnbull, Ewen Silvester, Francesco Colombi, Mark Macklin
Summary: Industrial-scale metal mining in developing economies produces large quantities of waste rock, tailings, and contaminants, resulting in anthropogenic landscapes that extend beyond individual mining sites and pose enduring threats to human and ecosystem health. However, the significance of these legacies is often overlooked. This paper integrates archaeological, geomorphological, and geochemical evidence to identify and analyze mining-related changes in the Loddon River valley, Australia, emphasizing the importance of recognizing and managing these legacies for understanding mining heritage and preserving healthy environments.
GEOARCHAEOLOGY-AN INTERNATIONAL JOURNAL
(2023)
Article
Engineering, Environmental
Suman Acharya, Aleicia Holland, Gavin Rees, Andrew Brooks, Daniel Coleman, Chris Hepplewhite, Sarah Mika, Nick Bond, Ewen Silvester
Summary: River regulation by dams can significantly alter the composition and processing of organic matter in the regulated river. However, the influence of unregulated tributaries on organic matter dynamics is less understood. This study examines the water chemistry of regulated and unregulated rivers in south-east Australia, finding that tributaries contain a higher concentration of terrestrially derived organic matter compared to the regulated river. Additionally, storm events can introduce fresh organic matter into the regulated system from tributaries, impacting the downstream composition.
Article
Multidisciplinary Sciences
Georgia K. Dwyer, Rick J. Stoffels, Ewen Silvester, Gavin N. Rees
Summary: In nutritional ecology, the goal is to maximize consumer fitness through diet. The Selectively Consuming prey to match the Intake Target (SCIT) hypothesis suggests that consumers have evolved to selectively consume prey to meet their nutritional needs. This phenomenon has been observed in some herbivores and omnivores, and is also likely to occur in carnivores despite the homogeneity of their prey's nutrient composition.
SCIENTIFIC REPORTS
(2023)
Article
Biodiversity Conservation
Jessica A. Rowland, Jessica C. Walsh, Matthew Beitzel, Renee Brawata, Daniel Brown, Linden Chalmers, Lisa Evans, Kathryn Eyles, Rob Gibbs, Samantha Grover, Shane Grundy, Rebecca M. B. Harris, Shayne Haywood, Mairi Hilton, Geoffrey Hope, Ben Keaney, Marie Keatley, David A. Keith, Ruth Lawrence, Maiko L. Lutz, Trish MacDonald, Elizabeth MacPhee, Nina McLean, Susan Powell, Diana A. Robledo-Ruiz, Chloe F. Sato, Mel Schroder, Ewen Silvester, Arn Tolsma, Andrew W. Western, Jennie Whinam, Matthew White, Anita Wild, Richard J. Williams, Genevieve Wright, Wade Young, Joslin L. Moore
Summary: Protecting threatened ecosystems requires understanding their management effectiveness and the challenges they face. By bringing together researchers, land managers, and policymakers to identify key threats, management needs, and knowledge gaps, we can improve the management of these ecosystems.
CONSERVATION SCIENCE AND PRACTICE
(2023)
Article
Fisheries
Georgia K. Dwyer, Rick J. Stoffels, Ewen Silvester, Gavin N. Rees
MARINE AND FRESHWATER RESEARCH
(2020)
Article
Environmental Sciences
Peter Davies, Susan Lawrence, Jodi Turnbull, Ian Rutherfurd, James Grove, Ewen Silvester, Darren Baldwin, Mark Macklin
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)