Article
Ecology
Lesli C. Hernandez-Mendoza, Luis Escalera-Vazquez, Daniel Arceo-Carranza
Summary: This study compares the trophic dynamics of a fish community in a mangrove ecosystem in the Mexican-Caribbean using different types of fish species as bioindicators. The results show that the feeding characteristics of fish are related to the conservation or restoration status of the mangroves and the trophic dynamics in the community.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Environmental Sciences
Paulo Cesar Basta, Ana Claudia Santiago de Vasconcellos, Gustavo Hallwass, Decio Yokota, Daniel De Oliveira d'El Rei Pinto, Danicley Saraiva de Aguiar, Ciro Campos de Souza, Marcelo Oliveira-da-Costa
Summary: Mercury contamination in the Amazon has increased in recent years, especially due to gold-mining activities. Our study found that more than one-fifth of fish sold in urban centers had mercury levels above safe limits. The risk of mercury contamination was 14 times higher in carnivorous fish compared to noncarnivorous fish. The analysis showed that the daily mercury intake from fish consumption exceeded recommended levels in all population groups, especially in women of childbearing age and young children. Different types of fish carry different risks, requiring appropriate nutritional guidelines.
Article
Environmental Sciences
Dhiraj Kumar Chaudhary, Hwansuk Kim, Danny Reible, Mikyung Lee, Sunyoung Kim, Lan Hee Kim, Sungpyo Kim, Yongseok Hong
Summary: This study investigated the seasonal trends in bioaccumulation potential and toxic effects of mercury in Asian clams and microbial community. The results showed that mercury accumulation in clams and pore water was highest during the summer season at contaminated sites. The upregulation of biomarker genes in clams indicated their response to mercury contamination. High levels of mercury negatively affected bacterial and metabolic diversities.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Hualong Hong, Binghuang Zhang, Haoliang Lu
Summary: The study found that metal content in sediments of the Zhangjiang Estuary mangrove wetland is higher in the dry season compared to the wet season, with significant accumulation of metals in mangrove sites compared to mudflats. Metals were mainly found in the acid-soluble fraction in the dry season, with lead posing a higher environmental risk during this period.
Article
Environmental Sciences
Tiantian Wu, Pingping Liu, Xintian He, Hongmei Xu, Zhenxing Shen
Summary: The study revealed significant seasonal variations in heavy metal elements in atmospheric fine particulate matter in Xi'an, China, with Cd and Pb posing higher risks to the environment and human health. Pb, Cd, Ni, and Zn were identified as potential bioavailable elements with strong biological toxicity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Murat Yabanli, Sami Tay
Summary: The study revealed that the highest level of selenium was found in soil ponds sea bream, while the highest mercury concentration was detected in wild species sea bream. Risk assessment conducted with Se-HBV showed positive values for each group of sea bream.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Veterinary Sciences
Mohamed A. A. Hussein, Nanis S. S. Morsy, Abdallah F. F. Mahmoud, Wageh S. S. Darwish, Mohamed T. T. Elabbasy, Frantisek Zigo, Zuzana Farkasova, Ibrahim F. F. Rehan
Summary: Egypt has beaches, the Nile River, and lakes, allowing for fish consumption to compensate for the lack of protein in red meat. However, this study found that the examined fish species collected from the El-Obour fish market in Egypt had higher levels of toxic metals than the European Commission's limits for lead and cadmium. Nevertheless, there was no significant health risk to people due to the current consumption rate of these fish species.
FRONTIERS IN VETERINARY SCIENCE
(2023)
Article
Environmental Sciences
Noelia S. La Colla, Sandra E. Botte, Pia Simonetti, Vanesa L. Negrin, Analia V. Serra, Jorge E. Marcovecchio
Summary: This study provides an integrated assessment of the distribution of Cd, Cr, Hg, and Pb in dissolved water, sediments, and fish muscle tissues in the Bahia Blanca estuary, Argentina. Concentrations of Hg and Pb in the water fraction were below the limit of detection.
Article
Environmental Sciences
Robert P. Mason, Kate L. Buckman, Emily A. Seelen, Vivien F. Taylor, Celia Y. Chen
Summary: This study examines the effects of methylmercury (MeHg) sources in water and sediments on the MeHg concentrations in Mummichog fish. The study finds that the concentration of dissolved organic carbon (DOC) in water is related to MeHg uptake and that the source of MeHg in the fish's diet also influences its MeHg content. Additionally, the study highlights the differences in MeHg bioaccumulation pathways across different estuarine systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Jiajun Wu, Xiaowei Yin, Yunzhao Liu, Xin Chen, Chang Xie, Yangyang Liang, Jing Li, Zhongguan Jiang
Summary: This study analyzed the seasonal variation and ecological risk of microplastic (MP) concentrations in economic fish species from Lake Chaohu in China. Results showed higher MP abundance in economic fishes during the dry season compared to the wet season. However, the characteristics of MPs in economic fishes were similar between the two seasons. Planktivorous and pelagic fish species exhibited sensitive variations of MPs concentrations between wet and dry seasons, making them good bioindicators of MPs contaminants in freshwater ecosystems. Ecological risks of MPs were higher in the wet season than in the dry season based on polymer risk index (H). The study highlights the usage of polymer risk index for ecological risk assessment in aquatic organisms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Joanna Burger, Michael Gochfeld
Summary: The study revealed variations in mercury and selenium levels, as well as selenium:mercury molar ratios, within and between species in New Jersey. While selenium can help mitigate mercury toxicity, the effectiveness declines as fish size increases, leading to lower selenium:mercury molar ratios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
K. Waddington, A. Harrison, D. Rayner, T. Tucker, W. Glamore
Summary: This paper presents a new method to identify estuarine catchment areas that are most likely to generate hypoxic conditions. The method uses established risk factors and was verified in eastern Australia. Climate change may significantly increase the volume and frequency of blackwater events in estuarine environments. Management measures should be introduced to mitigate the effects of climate change and avoid further widespread hypoxic blackwater events.
WATER RESOURCES RESEARCH
(2023)
Article
Chemistry, Applied
Konrad Mielcarek, Patryk Nowakowski, Anna Puscion-Jakubik, Krystyna J. Gromkowska-Kepka, Jolanta Soroczynska, Renata Markiewicz-Zukowska, Sylwia K. Naliwajko, Monika Grabia, Joanna Bielecka, Anita Zmudzi, Justyna Moskwa, Elzbieta Karpinska, Katarzyna Socha
Summary: The aim of this study was to assess contamination levels of arsenic, cadmium, lead, and mercury in freshwater fish from Poland. The results showed that the selected species of fish, especially smoked fish products, had high levels of heavy metal contamination, posing potential health risks.
Article
Environmental Sciences
Muhammad Aamir Munir, Bushra Khan, Ishaq Ahmed Mian, Muhammad Rafiq, Samreen Shahzadi, Kashif Naeem, Iqbal Ahmad
Summary: Mercury bioaccumulation in fish and scalp hair was assessed in fishing communities along the river Swat in Pakistan. Significant differences were found in mercury concentrations between upstream and downstream fish and scalp hair. Health problems in the fishing community were attributed to mercury accumulation from fish consumption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Min Jing, Dan Lin, Jing Lin, Qiuhua Li, Haiyu Yan, Xinbin Feng
Summary: The study found that farmed fish from the Wujiangdu Reservoir in China had levels of Hg and MeHg below safety limits, but higher concentrations of MC-RR and MC-LR. Despite the nutritional benefits of n-3 PUFA from consuming these fish, the risk of MC-LR exposure remains high, especially in silver carp and black carp. This calls for fish consumption advisories and monitoring to address the health risks associated with pollutants in aquatic products.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Petrus Galvao, Bruna Sus, Jose Lailson-Brito, Alexandre Azevedo, Olaf Malm, Tatiana Bisi
Summary: This study investigated the bioaccumulation of monomethylmercury (MeHg) in deep-sea fish from the Southeast Atlantic Ocean, revealing that muscle tissue is the main storage site for MeHg, while liver tissue contains the highest total mercury concentrations. The research also highlights the promotion of mercury biomagnification in a tropical upwelling ecosystem, suggesting that upwelling areas may serve as hot spots for monitoring MeHg in marine biota.
Article
Environmental Sciences
G. P. Bighetti, J. A. Padilha, L. S. T. Cunha, D. Kasper, O. Malm, P. L. Mancini
Summary: The study found that sexual size dimorphism in seabirds does not affect mercury concentrations in tissues, with females and males having similar THg concentrations. Brown booby juveniles have lower THg and MeHg concentrations compared to adults due to shorter exposure time to mercury.
ENVIRONMENTAL POLLUTION
(2021)
Proceedings Paper
Polymer Science
Fabiola Silveira Maranhao, Fernando Gomes de Souza Junior, Sergio Thode Filho, Bryan Henrique de Oliveira Athayde, Felipe Ferreira de Carvalho, Adam Lino, Olaf Malm
Summary: Sorption of heavy metals is an important method for controlling environmental pollution, especially in the context of bioaccumulation. A new technology utilizing a magnetic nanocomposite for heavy metal removal through sorption has been proposed in this paper, showing a 99% sorption capacity for effluents contaminated with heavy metals, with promising results in chromium and lead absorption tests.
MACROMOLECULAR SYMPOSIA
(2021)
Review
Environmental Sciences
Patricia C. G. Pereira, Claudio E. T. Parente, Gabriel O. Carvalho, Joao P. M. Torres, Rodrigo O. Meire, Paulo R. Dorneles, Olaf Malm
Summary: Flower import regulations are restricted for food security and biosafety, but the lack of pesticide limits for ornamental flowers can result in overuse of pesticides and trade of contaminated products. Many countries ban certain pesticides in flower production, with more research in developed countries, but there are still risks to both the environment and human health.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Sidney Fernandes Sales Junior, Evelyn Oliveira da Silva, Gabriel de Farias Araujo, Lorena Oliveira Souza Soares, Claudio Ernesto Taveira Parente, Olaf Malm, Enrico Mendes Saggioro, Fabio Verissimo Correia
Summary: Long-term exposure of Eisenia andrei earthworms to fluoroquinolone-contaminated poultry litter led to increased CAT and SOD activities, as well as dose-dependent responses in GST and GSH levels. However, lipid peroxidation levels showed a decreasing trend. These findings suggest a trend of antioxidant system attenuation in response to successive poultry litter applications, with major alterations observed in the first month of exposure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
C. Salazar-Perez, F. Amezcua, A. Rosales-Valencia, L. Green, J. E. Pollorena-Melendrez, M. A. Sarmiento-Martinez, I Tomita Ramirez, B. D. Gil-Manrique, M. Y. Hernandez-Lozano, V. M. Muro-Torres, C. Green-Ruiz, T. D. J. Pinon-Colin, F. T. Wakida, M. Barletta
Summary: This study investigated the occurrence of plastic particles in the digestive tracts of fishes from a tropical estuarine system in the Gulf of California. Plastic debris was found in 50.5% of the fish analyzed, with most particles being small microplastics. ATR-FTIR spectroscopy identified the main polymers present, which include polyamide, polyethylene, polypropylene, and polyacrylic. These results provide evidence of plastic contamination in estuarine biota in the Gulf of California.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Leandro de Oliveira Drummond, Rodrigo Ornellas Meire, Caryne Braga, Carlos Eduardo de Rezende, Olaf Malm, Rui Cerqueira
Summary: This study investigated the influence of altitudinal distribution, size, trophic position, and degree of water dependence on mercury concentration in amphibians in a mountainous complex in southeastern Brazil. The results showed a positive relationship between elevation and mercury concentration in topsoil samples from rainforest sites, while samples from cloud forest and highland grasslands had lower mercury concentration than expected. This suggests that vegetation structure plays a key role in the deposition of atmospheric mercury, and various factors such as elevation, trophic level, and water dependence affect mercury concentration in amphibians.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jose E. Celis, Winfred Espejo, Janeide de A. Padilha, Karen A. Kidd, Rodrigo Goncalves, Paulo Dorneles, Douglas Oliveira, Olaf Malm, Christopher A. Celis, Gustavo Chiang
Summary: Trace metals bioaccumulate and some biomagnify in aquatic organisms, posing a threat to organisms and human consumers. This study investigated the trophodynamics of trace metals in aquatic food webs from remote coastal zones in the southern hemisphere, revealing the influence of geographic location and species on the fate of these metals.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Isabel B. Monteiro, David Dantas, Maristela C. Makrakis, Luciano Lorenzi, Sofia Alves Ribeiro, Ana Paula Testa Pezzin, Victoria Fonseca Silveira, Eduardo Gentil
Summary: This study assessed the composition and spatial distribution of plastic fragments in the Estuarine Lagoon System in Laguna, Santa Catarina, Brazil. The findings showed that plastic filaments, mainly composed of polyester, polypropylene, and polyethylene, were the most abundant type of plastic. Fishing and urbanization were identified as the main sources of meso- and microplastic pollution in the environment.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
G. P. Bighetti, J. A. Padilha, L. S. T. Cunha, O. Malm, P. L. Mancini
Summary: Seabird feathers are important matrices for analyzing environmental contaminants. In this study on brown boobies, the concentration of total mercury (THg) was measured in different types of feathers, revealing higher levels in ventral and wing feathers compared to dorsal and tail feathers. Juvenile birds had lower concentrations of THg in all feather types compared to adults. Ventral feathers are suggested as the most suitable biomonitor for THg contamination in brown boobies, but further studies are needed for other tropical seabird species.
Article
Environmental Sciences
Christiane N. Monte, Ana Paula C. Rodrigues, Petrus M. A. Galvao, Gabriela C. Pontes, Olaf Malm, Julio C. Wasserman, Wilson Machado
Summary: This study evaluates the behavior of mercury and its methylmercury (MeHg) response upon sediment resuspension in two impacted areas of Guanabara Bay. The results show a statistically significant correlation between MeHg and resuspension time in the Rio de Janeiro Harbor sediments, indicating net methylation. This highlights the importance of considering concentration changes due to sediment resuspension-redeposition processes when assessing the variability of MeHg and associated toxicity risks.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Environmental Sciences
Luciano Lorenzi, Devon Gebauer Mayer, Bruna Conte Reginato, Paulo Roberto Pagliosa, David Valenca Dantas, Eduardo Gentil, Vladimir G. Toro Valencia
Summary: Urban expansion in Brazilian coastal zones has had various negative impacts on coastal marine ecosystems due to unorganized land use and lack of infrastructure projects. Improper disposal of domestic and industrial wastewater in coastal waterbodies has caused significant environmental problems. This study aimed to understand the relationship between the contamination of groundwater with domestic sewage and the density and composition of benthic infauna on sandy beaches. The findings revealed that higher concentrations of nutrients in water percolating through sediment in the summer, increased domestic wastewater discharge, and intense precipitation led to surface and groundwater contamination. Moreover, the study showed an increase in the population density of Thoracophelia furcifera, indicating its potential as an indicator of groundwater eutrophication. This research provides valuable insight for monitoring and improving the environmental quality of sandy beaches.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Thais de Castro Paiva, Eurizangela Pereira Dary, Inacio Abreu Pestana, Sidineia Aparecida Amadio, Olaf Malm, Daniele Kasper
Summary: This study finds that the bioaccumulation of mercury in fishes from an Amazonian lake is influenced by biological characteristics and environmental changes. Feeding habits and seasonal flood-pulse have a significant impact on mercury concentrations in fish muscles.
ENVIRONMENTAL RESEARCH
(2022)
Article
Ecology
Catarina de C. A. Frischknecht, David V. Dantas, Jorge L. Rodrigues-Filho, Eduardo Gentil
Summary: In this study, the structure of fish assemblages in the shallow marginal area of Mirim Lagoon was analyzed, showing the importance of this area as a breeding, refuge, and food site for fish species. The composition, abundance, and diversity of the assemblages were evaluated seasonally, and significant differences in these parameters were found between seasons.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Meeting Abstract
Cardiac & Cardiovascular Systems
T. Sugimoto, S. Boveri, F. Bandera, M. Barletta, E. Alfonzetti, M. Guazzi
EUROPEAN HEART JOURNAL
(2021)
