Review
Environmental Sciences
Fabio Bernardo, Arminda Alves, Vera Homem
Summary: <br>This paper investigates the bioaccumulation and biomagnification potential of volatile methylsiloxanes (VMSs) in food webs. Due to limited published information, the toxicological effects of VMSs on aquatic biota and human ecology are not well understood. The results show conflicting findings regarding the bioaccumulation of VMSs in food webs, with some studies suggesting bioaccumulation and biomagnification potential, while others suggesting trophic dilution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Ananya Ashok, Lone Hoj, Diane L. Brinkman, Andrew P. Negri, Susana Agusti
Summary: This study investigated the uptake rates and accumulation of a C-13-labeled polycyclic aromatic hydrocarbon (PAH) in corals. The results showed that the accumulation of PAHs in corals was higher with increasing food-chain length, with predation having the largest contribution. Additionally, dissolved or diet-bound PAHs had no significant effect on the photosynthetic efficiency of coral symbionts.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Kanchan Kumari, Anshika Singh, Deepak Marathe
Summary: Cyclic volatile methyl siloxanes (cVMS) are extensively used and widely present in various environmental matrices, raising concerns about their environmental contamination and potential health hazards. This study comprehensively reviews their occurrence and environmental behavior in air, water, soil, sediments, sludge, dusts, biogas, biosolids, and biota. Higher concentrations of cVMS were found in indoor air and biosolids, but not in water, soil, and sediments except for wastewaters. No threat to aquatic organisms was identified, and mammalian toxicity hazards were not evident except for rare cases of uterine tumors under long-term exposures in laboratory conditions. More careful examinations are needed to establish strong evidence and inform policy-making regarding the production and use of cVMS to mitigate potential environmental consequences.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Jacqueline R. Gerson, Rebecca Dorman, Collin Eagles-Smith, Emily S. Bernhardt, David Walters
Summary: Research shows that selenium exposure may reduce MeHg bioaccumulation and toxicity, but does not affect the MeHg concentration in diatoms under high MeHg treatment. Only in high MeHg treatment, the addition of SeMet leads to a decrease in mayfly MeHg concentrations and biomagnification factors. However, Se is toxic to mayflies, causing negative effects such as reduced escape behavior and prolonged metamorphosis time.
ENVIRONMENTAL POLLUTION
(2021)
Review
Environmental Sciences
Ying Zhang, Sijia Li, Yafeng Zhang, Yezi Chen, Xutao Wang, Yuxin Sun
Summary: This study reviewed the contamination of HBCDs in marine biota in China and summarized their bioaccumulation and biomagnification in the marine food web. The study also discussed future research directions, including the transport and fluxes of HBCDs in the marine environment, the biomagnification in different ecosystems, and the metabolism in different marine species.
Article
Environmental Sciences
Magella Pelletier, Laurie Isabel, Alain Armellin, Tana McDaniel, Pamela Martin, Daryl McGoldrick, Mandi Clark, Serge Moore
Summary: The bioaccumulation of cyclic volatile methylsiloxanes and linear siloxanes in a food web downstream of a wastewater treatment plant in Montreal, Canada was studied. The study found significant differences in ΔN-15 in fish and prey influenced by the wastewater plume compared to those feeding outside the plume. The predominant cyclic siloxane detected was D5, and total siloxane concentrations in suspended sediments were significantly higher in the effluent plume area of the river.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Sajid Rashid, Izaz Ali Shah, Roberto Xavier Supe Tulcan, Wajid Rashid, Mika Sillanpaa
Summary: Mercury is a highly toxic and mobile heavy metal that poses significant environmental and health risks. High concentrations of mercury were found in the environment, particularly in surface water, soil, sediments, and urban atmosphere. Seafood and vegetable consumption were associated with high health risks, while risks from soil and groundwater ingestion were relatively low.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Mark A. Cantu, Frank A. P. C. Gobas
Summary: The study investigated the bioaccumulation behavior of D6 in rainbow trout and found that the depuration of D6 in fish was mainly through biotransformation in the fish body, leading to a lack of biomagnification. The bioaccumulation capacity of D6 was markedly less than many hydrophobic organochlorines based on comparisons with similar profiles for other chemicals.
Article
Environmental Sciences
Jinpeng Tang, Jinhua Zhang, Linhui Su, Yanyan Jia, Yang Yang
Summary: This study investigated the concentrations and abundance of 11 antibiotics in water, sediment, and various aquatic organisms in the Pearl River, South China. The results showed that the bioaccumulation of antibiotics was positively correlated with their ionized form. Sediment ingestion was found to be a potential route of antibiotic exposure, as indicated by higher bioaccumulation in benthic organisms compared to fish. Additionally, only ciprofloxacin exhibited significant trophic magnification, suggesting the importance of metabolic biotransformation in driving the biomagnification of antibiotics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Rachel G. Clarke, Sara J. Klapstein, N. Kirk Hillier, Nelson J. O'Driscoll
Summary: This study found that the concentrations and uptake of methylmercury in caddisflies and mayflies collected from two temperate lakes and one brook in Nova Scotia, Canada were influenced by water chemistry. The research highlights the importance of quantifying variations in MeHg bioaccumulation and BAFs of common aquatic insect bioindicators at the base of complex food webs.
Article
Environmental Sciences
Sofi Jonsson, Michelle Nerentorp Mastromonaco, Feiyue Wang, Andrea G. Bravo, Warren R. L. Cairns, John Chetelat, Thomas A. Douglas, Gretchen Lescord, Liisa Ukonmaanaho, Lars-Eric Heimburger-Boavida
Summary: Anthropogenic mercury undergoes long-range transport to the Arctic and can be transformed into methylmercury, potentially leading to high exposure in Arctic inhabitants and wildlife. Biogeochemical and ecological processes in the Arctic play a crucial role in determining the environmental exposure of mercury, particularly the bioavailability, methylation and demethylation, bioaccumulation, and biomagnification of methylmercury. Recent scientific advances have provided insights into these processes and highlighted their importance in understanding the fate of anthropogenic mercury in Arctic ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
J. H. Erasmus, N. J. Smit, R. Gerber, B. C. Schaeffner, N. Nkabi, V. Wepener
Summary: This study evaluated the total mercury concentrations in 22 species of elasmobranchs along the South African coastline. The results showed that the concentrations on the east coast were in the same range or higher compared to previous years, raising conservation concerns.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Di Du, Yonglong Lu, Yunqiao Zhou, Qifeng Li, Meng Zhang, Guoxiang Han, Haotian Cui, Erik Jeppesen
Summary: Knowledge on bioaccumulation and trophic transfer in food webs is crucial in evaluating contaminant hazards. This study investigated the presence of PFAAs in organisms sampled from Qinzhou Bay in the South China Sea, and found different distribution patterns between short-chain and long-chain PFAAs based on trophic positions. Results suggest a potential biomagnification effect of PFOS, while the effects of PFOA were less clear. Banned long-chain PFAAs were found to still persist in the coastal marine ecosystem, while emerging short-chain PFAAs showed high concentrations but no biomagnification.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Lukasz J. Binkowski, Jerome Fort, Maud Brault-Favrou, Fabrice Gallien, Gilles Le Guillou, Olivier Chastel, Paco Bustamante
Summary: Human activities are the main source of mercury pollution in the ocean, with seabirds serving as valuable bioindicators of contamination levels. This study found that trophic position and foraging habitat influence mercury concentrations in blood and feathers of marine gull chicks. The highest mercury concentrations were found in Great black-backed gull chicks, which may have toxic effects with potential consequences for their populations.
Article
Environmental Sciences
Izabela Pa Lka, Dominika Saniewska, Luiza Bielecka, Justyna Kobos, Waldemar Grzybowski
Summary: This study investigated the selenium concentration in water, phytoplankton, and zooplankton in the Baltic Sea and analyzed the factors affecting selenium absorption and transfer. The results showed that the biomass of plankton played an important role in shaping selenium concentration, and seasonal and taxonomic changes also influenced selenium concentration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)