Article
Environmental Sciences
Yunni Gao, Hui Yang, Longfei Li, Xiaofei Gao, Mei Li, Jing Dong, Man Zhang, Jingxiao Zhang, Xuejun Li, Zhiying Lu, Michele A. Burford
Summary: This study investigated the interaction between submerged plants and different strains of the cyanobacterium Microcystis, one of which produces Microcystin (MC) and the other does not. It was found that the MC-producing strain of Microcystis had a higher resistance to negative impacts from the submerged plant compared to the non-MC-producing strain, while the plant was more impacted by the MC-producing strain. The study also showed that the associated bacterioplankton community was more affected by the MC-producing strain than the cocultured plant. Higher concentrations of dissolved organic and reducing inorganic compounds might exacerbate the recovering capacity of coexisting submerged plants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Wyckliffe Ayoma Ochieng, Li Wei, Godfrey Kinyori Wagutu, Ling Xian, Samuel Wamburu Muthui, Stephen Ogada, Duncan Ochieng Otieno, Elive Limunga Linda, Fan Liu
Summary: Ammonium toxicity impairs growth and development in macrophytes, but the asparagine metabolic pathway can enhance ammonium detoxification. Under high ammonium concentrations, gene expression in the above-ground and below-ground parts of Myriophyllum spicatum is altered, and key genes involved in nitrogen metabolism are crucial for maintaining ammonium homeostasis.
Article
Plant Sciences
Haoping Wu, Beibei Hao, Hyunbin Jo, Yanpeng Cai
Summary: Climate warming and eutrophication have significant impacts on the growth of submerged macrophytes in shallow lakes, showing seasonal and species-specific effects on plant biomass. Further research considering interspecies differences is necessary to understand the responses of submerged macrophytes to these environmental changes.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Microbiology
Lei Sun, Jiashuo Wang, Yangyang Wu, Tianyu Gao, Cunqi Liu
Summary: The epiphytic bacterial community of Myriophyllum spicatum from Baiyangdian Lake varies substantially with the seasons and environmental conditions, with total phosphorus being a key factor that affects the changes. The abundance of epiphytic bacteria was found to be the highest in October and the lowest in August, and the dominant phylum, class, and genus were Proteobacteria, Gammaproteobacteria, and Aeromonas, respectively. Predictive results showed that the predominant functions of the epiphytic bacterial community were chemoheterotrophy, nitrate reduction, and fermentation.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Environmental Sciences
Michal Rybak, Kinga Drzewiecka, Magdalena Wozniak, Safa Oksuz, Michal Krueger, Tadeusz Sobczynski, Izabela Ratajczak, Tomasz Joniak
Summary: Accelerated lakes eutrophication is a major challenge nowadays. Large-scale restoration treatments for lakes are carried out worldwide, but little research has been done on the impact of these treatments on water organisms and ecosystem homeostasis. This microcosm study investigates the effects of a phosphorus coagulant on a model macrophyte species and reveals that chemical lake restoration treatments may have far-reaching consequences for the biogeochemical cycle and food web functioning.
Article
Environmental Sciences
Fikret Ustaoglu, Serkan Kukrer, Beyhan Tas, Halim Topaldemir
Summary: This study analyzed sediment samples from Terme River and found that the metals in the samples were mainly of natural origin, with cadmium and copper being influenced by human activities. The assessment indicated low ecological and human health risks in the region, and Myriophyllum spicatum was identified as a potential bioindicator.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Abegail Fusilero, Jasmine De Rop, Pieter Spanoghe, Gertie H. P. Arts, Karel A. C. De Schamphelaere
Summary: Considering the importance of rooted macrophytes in the aquatic ecosystem, this study investigated the interactive effects of diflufenican and iodosulfuron-methyl-sodium at an environmentally relevant mixture ratio. The results showed that these compounds acted antagonistically for fresh weight and total shoot length, and slightly synergistically for the number of side shoots. The assessment of mixture toxicity interactions was found to be method- and endpoint-dependent.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Mehmet Borga Ergonul, Danial Nassouhi, Meltem Celik, Sibel Atasagun
Summary: The study compared the removal efficiency of Myriophyllum spicatum L. in tap water and pond water for nano-sized zinc, finding significant removal in both media with a strong relationship between exposure duration and removal performance. Time-dependent removal showed no further progress after 4 days, and planktonic communities in pond water might play a key role in the fate of zinc oxide nanoparticles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Ecology
George Marbuah, Ing-Marie Gren, Brendan G. Mckie, Laetitia Buisson
Summary: This study explores the economic and ecological factors influencing the occurrence and spread of aquatic invasive species, particularly focusing on the importance of economic activity in driving the invasion of uninvaded lakes by Elodea canadensis species. Utilizing satellite imagery, night-time lights data is used as a proxy for economic activity and mapped to key environmental variables affecting the species' distribution. Evidence from a spatial probit model confirms a robust positive relationship between economic activity and the invasion of uninvaded lakes.
ECOLOGICAL ECONOMICS
(2021)
Article
Agricultural Engineering
Ze Zhang, Mingjun Zhong, Yaping Sun, Yuhai Liang, Mengxue Liu, Jing Li, Hongcan Cui, Fangang Meng, Zhujian Huang, Lihua Cui
Summary: An improved A/O system with bionic aquatic weed and Myriophyllum sp. was established for treating digested piggery wastewater, achieving satisfactory removal efficiencies of COD, NH4+-N, and TN. High-throughput sequencing identified dominant microorganisms, which altered the microbial community structure and metabolic pathways for cost-effective treatment.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Kasturi Poddar, Debapriya Sarkar, Surendra Behera, Angana Sarkar
Summary: This study evaluated the performance of a bacterial consortium in degrading petroleum contamination in soil and restoring soil fertility. The results showed that the bacterial consortium was effective in degrading hydrocarbon compounds and improving soil fertility. Furthermore, it reduced the ecotoxicity and phytotoxicity of hydrocarbon contamination, promoting plant germination and growth in polluted soil.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Yang Li, Lei Yang, Fei Ma, Hongwei Yu, Chunhua Liu, Dan Yu
Summary: Epiphytic bacteria on submerged macrophytes show varied responses to elevated CO2, with dominant taxa being influenced by nutrient processes and mutualistic relationships, and rare taxa being more related to trace elements, pathogens, and defense strategies.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Kamil Ekinci, Fatih Ciftci, Barbaros S. Kumbul, Rifat Yildirim, Mehmet Solak, Volkan Coban
Summary: The potential use of Elodea canadensis biomass as a co-substrate for biogas generation was investigated. The study showed that increasing the amount of E. canadensis in the mixture decreased biogas and methane production, but also demonstrated the feasibility of using it as a biomass energy source.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Qinsong Xu, Wenjing Qiu, Tinting Lin, Yeyuping Yang, Yuji Jiang
Summary: This study investigated the subcellular distribution, chemical forms, and metabolomic profiles of the aquatic plant Elodea canadensis exposed to environmentally relevant concentrations of cadmium. The majority of cadmium was found in the cell wall, followed by the soluble fraction and organelles. Metabolomic analysis revealed significant changes in primary and secondary metabolites, suggesting a detoxification mechanism against cadmium toxicity.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Chemistry, Multidisciplinary
Periasamy Anbu, Subash C. B. Gopinath, Midhat Nabil Salimi, Iswary Letchumanan, Sreeramanan Subramaniam
Summary: The production of strontium oxide nanoparticles from an aquatic plant extract was successful, and various characterization methods were used to evaluate their properties, confirming their potential for biomedical applications.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2022)
Article
Environmental Sciences
Tyler A. Black, Mark L. Hanson, Vince P. Palace, Jose Luis Rodriguez-Gil
Summary: The study evaluated the physical impacts of diluted bitumen and surface washing agents on freshwater aquatic invertebrates, focusing on their effects on water striders. Results showed that these compounds can cause significant immobility in surface-dwelling organisms. Comparison with historic oil spill data suggested that the reported sheen thickness values could have been reached or exceeded in the majority of past spills.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Editorial Material
Environmental Sciences
Richard A. Brain, Mark L. Hanson
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Environmental Sciences
Emily Dionne, Mark L. Hanson, Julie C. Anderson, Richard A. Brain
Summary: The continuous exposure of fathead minnows to atrazine did not significantly impact hatching success or reproduction in the F0 generation, but did affect growth and survival at higher concentrations. The F1 generation showed reduced embryo hatchability but no significant difference in survival compared to control. Bioconcentration factors varied across life stages but overall indicated low bioconcentration of atrazine in the fish tissues. Consistency analysis supports the conclusion that atrazine poses no significant chronic risk to freshwater fish up to at least 100 μg/L.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Mark L. Hanson, Richard A. Brain
Summary: This paper introduces a semi-quantitative method to assist ecotoxicologists in evaluating the consistency of data within peer-reviewed literature, specifically focusing on the direct toxicity of Anurans exposed to atrazine. The analysis did not find compelling evidence of consistent direct effects in Anurans under laboratory conditions at concentrations up to at least 100 μg/L of atrazine. It suggests that further work is needed to refine the approach and recommends ecotoxicologists to use a formal consistency of effects assessment method routinely.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
Luis G. Chaves-Barquero, Braedon W. Humeniuk, Kim H. Luong, Nazim Cicek, Charles S. Wong, Mark L. Hanson
Summary: Two studies were conducted to assess the use of recycled glass as a substrate for constructed wetlands and pharmaceutical removal in wastewater treatment facilities. The first study found that recycled glass performed similarly to traditional substrates for wetland-based wastewater treatment, with differences in pharmaceutical removal rates at different depths and treatment conditions. The second study showed that glass and sand had no significant differences in pharmaceutical removal, with some pharmaceuticals persisting over a retention time of 24 h.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Dong-Young Back, Sun-Yong Ha, Brent Else, Mark Hanson, Samantha F. Jones, Kyung-Hoon Shin, Agnieszka Tatarek, Jozef M. Wiktor, Nazim Cicek, Shah Alam, C. J. Mundy
Summary: The study found that the Kitikmeot Sea is one of the most nutrient-depleted regions in the Arctic Ocean, with local primary production in Cambridge Bay significantly influenced by wastewater effluent. Despite not yet being eutrophic, caution is advised for the rapid response of the marine system to wastewater release, with a strong recommendation to develop a research and monitoring plan for the bay.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
R. A. Brain, J. C. Anderson, M. L. Hanson
Summary: The herbicide atrazine is commonly found in freshwaters and coastal waters, with limited studies on its effects on estuarine/marine invertebrates. This study investigated the toxicity of atrazine towards Eastern oysters and Mysid shrimps, finding that it had slight toxicity to oysters and moderate toxicity to shrimps under acute exposure conditions. The data gathered will help in filling gaps in literature and assessing the potential risks of atrazine towards estuarine/marine communities.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Marine & Freshwater Biology
Phillip J. Ankley, Yuwei Xie, Tyler A. Black, Abigail DeBofsky, McKenzie Perry, Michael J. Paterson, Mark Hanson, Scott Higgins, John P. Giesy, Vince Palace
Summary: This study utilized DNA and RNA metabarcoding of zooplankton for ecotoxicological assessment and compared it with traditional morphological identification. The results showed that metabarcoding technology could detect boreal zooplankton taxa up to the genus level and served as a good proxy for biomass estimation. Both identification methods were able to discern the differences between different remediation practices on zooplankton communities.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
R. A. Brain, J. C. Anderson, M. L. Hanson
Summary: The study found that the acute toxicity of atrazine was slightly to moderately toxic towards sheepshead minnow, with larvae being more sensitive. Atrazine had minimal impact on embryo and larval survival in the early life stage test, indicating that environmentally relevant concentrations would not pose unacceptable risks for sheepshead minnow.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Review
Environmental Sciences
Rebecca J. Eldridge, Benjamin P. de Jourdan, Mark L. Hanson
Summary: There is a pressing need to understand the impact of contaminants on Arctic ecosystems. Most toxicity tests are based on temperate species, which may result in an underestimation of harm to Arctic organisms and contribute to significant uncertainty in risk assessments. A critical review was performed to assess reported effects, quantify methodological and endpoint relevance gaps, and identify future research needs. Evaluation of 48 studies revealed gaps in reliability and relevance for data used in risk assessment. Ongoing improvement in test conduction and reporting is necessary to support effective risk assessments in an Arctic context.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Jose Luis Rodriguez-Gil, Sawyer Stoyanovich, Mark L. Hanson, Bruce Hollebone, Diane M. Orihel, Vince Palace, Robert Faragher, Fatemeh S. Mirnaghi, Keval Shah, Zeyu Yang, Tyler A. Black, Jeffrey Cederwall, Johanna Mason, Samuel Patterson, Lauren Timlick, Jonathan Y. Seguin, Jules M. Blais
Summary: Large-scale in-lake enclosures were used to simulate spills of diluted bitumen in a boreal lake, assessing the fate of dilbit-derived hydrocarbons and metals as well as the impacts on water quality parameters. The results showed rapid increase and subsequent decrease in hydrocarbon and metal concentrations following dilbit application, with some metals displaying significant treatment effects, aiding in risk assessment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Marine & Freshwater Biology
Samuel A. Patterson, Daniel T. J. Denton, Caleb T. Hasler, Jules M. Blais, Mark L. Hanson, Bruce P. Hollebone, Jose Luis Rodriguez-Gil, Valerie S. Langlois, Geraldine Patey, Zeyu Yang, Diane M. Orihel
Summary: This study investigates the effects of experimental spills of diluted bitumen on larval wood frogs. The results suggest that exposure to chemical compounds released from naturally weathered dilbit does not significantly impact survival, growth, or development of the larvae. However, a modest decrease in larval activity is observed.
AQUATIC TOXICOLOGY
(2022)
Article
Environmental Sciences
Lauren Timlick, Jamie Dearnley, Jules M. Blais, Jose L. Rodriguez-Gil, Mark Hanson, Bruce P. Hollebone, Diane M. Orihel, Lisa E. Peters, Sawyer S. Stoyanovich, Vince P. Palace
Summary: The study investigates the chronic exposure of fish to diluted bitumen spills in controlled environments. The results show that fish retrieval significantly decreased at exposures above a certain concentration. At lower concentrations, fish exhibited physiological responses to dilbit-derived polycyclic aromatic compounds. However, there were no significant differences in condition factor or the development of reproductive organs.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Environmental Sciences
Stephanie D. Graves, Johanna J. Mason, Jose Luis Rodriguez-Gil, Jonathan Y. Seguin, Jules M. Blais, Mark L. Hanson, Bruce P. Hollebone, Vince P. Palace, Ian Clark, Leah Cundall, Daniel Layton-Matthews, Matthew I. Leybourne, Diane M. Orihel
Summary: Bacteria can biodegrade petroleum hydrocarbons after an oil spill, which could be assimilated by aquatic organisms. A study in a boreal lake in Canada examined the assimilation of petrogenic carbon into a freshwater food web after experimental spills of dilbit. The results showed minimal incorporation of oil carbon into the food web.
Article
Biochemistry & Molecular Biology
S. Madronich, B. Sulzberger, J. D. Longstreth, T. Schikowski, M. P. Sulbaek Andersen, K. R. Solomon, S. R. Wilson
Summary: Ultraviolet (UV) radiation drives the production of ozone and particulate matter, which are harmful to human health and the environment. The Montreal Protocol has successfully prevented major increases in UV radiation and air pollution. However, future scenarios of ozone recovery may have mixed effects on ground-level ozone and climate change can influence the transport of ozone into the troposphere. UV radiation also controls the amounts of chemicals in the atmosphere, including greenhouse gases and ozone-depleting substances, and their replacements may have unintended environmental impacts.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)