Article
Environmental Sciences
Javier Angel Tesan-Onrubia, Lars-Eric Heimbuerger-Boavida, Aurelie Dufour, Mireille Harmelin-Vivien, Isabel Garcia-Arevalo, Joel Knoery, Bastien Thomas, Francois Carlotti, Marc Tedetti, Daniela Banaru
Summary: Plankton in the Mediterranean Sea is influenced by various factors, such as size, food sources, biochemical composition, and trophic level, leading to differences in the bioaccumulation and biomagnification of mercury. Higher concentrations of monomethylmercury are found in oligotrophic regions, and plankton communities in the Southern Mediterranean Sea have lower concentrations compared to the Northern Mediterranean Sea.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Laurie A. Hall, Isa Woo, Mark Marvin-DiPasquale, John Y. Takekawa, David P. Krabbenhoft, Donald Yee, Letitia Grenier, Susan E. W. De La Cruz
Summary: Differences in sediment biogeochemistry among tidal marsh features can result in spatial variation in MeHg production. The MeHg concentrations in sediments and water do not necessarily match those in consumer tissues, possibly due to differences in behavior and physiology among consumers.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Tao Hu, Jiachao Zhang, Xueyan Xu, Xiaoli Wang, Changzhi Yang, Chao Song, Shuguang Wang, Shan Zhao
Summary: Antibiotic pollution is a common problem in the wetland of the Yellow River Delta caused by aquaculture industries. This study investigated the occurrence, bioaccumulation, and trophic transfer of antibiotics in the aquatic and terrestrial food webs of the YRD, and discussed the effects of physicochemical parameters on their behavior. The results showed that fluoroquinolones had the highest bioaccumulation capacity and the antibiotics were biodiluted in the aquatic food web while biomagnified in the terrestrial food web. Physicochemical parameters such as log Kow/log Dow and log Koa were found to be good predictors for antibiotic bioaccumulation in different organisms.
Article
Environmental Sciences
Huilan Zhang, Yueru Zhao, Ziwei Wang, Ying Liu
Summary: The study investigated the distribution, bioaccumulation, and trophic transfer of heavy metals (HMs) in a typical grassland ecosystem based on biological classes and trophic levels. Different organisms showed varying levels of accumulation capacity for different heavy metals, with a strong bioaccumulation capacity for toxic arsenic observed across different trophic levels. Organisms at lower trophic levels were more likely to biomagnify zinc, while those at higher trophic levels were more likely to biodilute lead.
Article
Environmental Sciences
Qi Wu, Chang-Gui Pan, Ying-Hui Wang, Shao-Ke Xiao, Ke-Fu Yu
Summary: This study investigated the occurrence, bioaccumulation, and trophic magnification of 22 antibiotics in a subtropical food web from the Beibu Gulf. The research found distinct differences in antibiotic concentrations and types among marine taxa, with some chemicals showing trophic magnification through the food web. Additionally, the study highlighted the potential bioaccumulation of antibiotics in marine organisms based on their log D-ow values.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Qianyi Huang, Rui Hou, Lang Lin, Hengxiang Li, Shan Liu, Yuanyue Cheng, Xiangrong Xu
Summary: The accumulation and trophodynamics of organo-phosphate flame retardants (OPFRs) and their metabolites were studied in the Pearl River estuarine food web of China. The concentration of OPFRs varied among different species, with the highest in crabs and the lowest in fish. The most abundant metabolites were di-alkyl phosphates (DAPs), with concentrations higher than or equal to their parent compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Caitlyn Donadt, Colin A. Cooke, Jennifer A. Graydon, Mark S. Poesch
Summary: Bioaccumulation of mercury in freshwater fish is a complex process influenced by environmental and biological factors. While surface water mercury concentrations were high in the studied tributaries of the Red Deer River, patterns of fish THg concentrations varied by species. The study suggests that mercury poses a risk to piscivorous wildlife health in these streams, but bioaccumulation is not solely driven by environmental factors and commonly associated factors like body size and trophic level may not strongly influence mercury concentrations in these ecosystems.
Article
Environmental Sciences
Per-Arne Amundsen, Matilda Henriksson, Amanda Poste, Sebastian Prati, Michael Power
Summary: This study examines the interaction between trophic ecology and mercury contamination in the fish communities of two lakes in a pollution-impacted subarctic watercourse. The findings suggest that the complexity of the food web and the composition of species play a role in the transfer of mercury in fish. Piscivorous fish were found to have higher mercury concentrations, with some species exceeding health authorization limits, potentially impacting fishing and human consumption.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Engineering, Environmental
Dominic E. Ponton, Raphael A. Lavoie, Maxime Leclerc, Francois Bilodeau, Dolors Planas, Marc Amyot
Summary: Research shows that run-of-river dams and other watershed disturbances alter carbon processing, promote Hg methylation and its accumulation at the base of the food web, leading to a temporary increase in Hg levels in fish.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Environmental Sciences
Jin Zhang, Chengjun Li, Wenli Tang, Mengjie Wu, Mingying Chen, Huan He, Pei Lei, Huan Zhong
Summary: Wetlands are important areas for studying mercury (Hg) biogeochemistry and have attracted global attention. A literature analysis of 15,813 publications on Hg in wetlands was conducted, revealing the changing focus of research over time. The research priorities for future studies include understanding the factors controlling methylmercury (MeHg) production, demethylation processes, bioaccumulation, and the role of wetlands in Hg circulation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jia You, Jun-min Gao, Ping-ting Fu, Gerald A. LeBlanc, Jin-song Guo, Li-xia Zhang, Mao-qiu Li
Summary: The study provides strong evidence of trophic enrichment of TPhT and TBT in the freshwater food web of a deep-water river channel-type reservoir in China, with concentrations positively correlated with trophic level and potential health risks, especially for children consuming aquatic products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Maxime Leclerc, Dominic E. Ponton, Francois Bilodeau, Dolors Planas, Marc Amyot
Summary: Compared to traditional hydropower plants, run-of-river (ROR) power plants have smaller impounded areas but can still have significant impacts on mercury cycling. This study found that ROR impoundment creates favorable environments for periphyton growth, which can contribute to the bioaccumulation of monomethylmercury (MMHg). The flooding also leads to changes in trophic structures and higher MMHg concentrations in flooded areas.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Pengwei Li, Rui Wang, Martin J. Kainz, Daqiang Yin
Summary: Algal density has a significant impact on the bioaccumulation and biomagnification of mercury (Hg) in aquatic food webs. This study conducted in Lake Taihu, a large shallow lake in eastern China, found that higher algal density was associated with lower Hg bioaccumulation in phytoplankton and zooplankton. The low Hg bioaccumulation was attributed to the low bioavailability of Hg and the smaller body size of dominant zooplankton species at higher algal density sites. Moreover, high algal density was also found to be associated with a low proportion of methylmercury (MeHg) in phytoplankton.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
R. P. Mason, M. Coulibaly, G. Hansen, H. Inman, P. K. Myer, K. M. Yao
Summary: Artisanal and small-scale gold mining, energy production, and other industrial inputs are a major source of anthropogenic mercury in aquatic environments. This study focuses on the understudied estuarine waters of Cote d'Ivoire and suggests that the local population may be exposed to unsafe levels of methylmercury through fish consumption. The findings highlight the importance of addressing local sources of mercury contamination and the transportation of mercury used in gold mining activities.
Article
Environmental Sciences
Ray W. Drenner, Matthew M. Chumchal, Simon P. Gaul, Michael T. Hembrough, Amal M. Khan, Ian M. Rolfe, Garrett R. Wallace, Madeline P. Hannappel
Summary: Mercury contamination is a widespread and toxic environmental issue. Monitoring mercury levels in food chains and fish is challenging in the vast number of water bodies in the United States. This study proposes the use of riparian spiders, specifically long-jawed orb weavers, as sentinel species to identify aquatic systems with high mercury concentrations. The findings demonstrate the potential of using long-jawed orb weavers to monitor chemical contaminants in aquatic ecosystems.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Biology
Joanne E. Littlefair, Jose S. Hleap, Vince Palace, Michael D. Rennie, Michael J. Paterson, Melania E. Cristescu
Summary: The spatial connectivity in aquatic ecosystems has a significant impact on the structure, function, and dynamics of aquatic communities. Environmental DNA can be used to conduct high-throughput, spatially integrated biodiversity surveys in these ecosystems.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Limnology
HM Baulch, DW Schindler, MA Turner, DL Findlay, MJ Paterson, RD Vinebrooke
LIMNOLOGY AND OCEANOGRAPHY
(2005)