Article
Environmental Sciences
Olusegun A. A. Dada, Jummai O. O. Bello
Summary: Plastic marine debris has been found to have a negative impact on marine organisms and the environment. This study investigated the presence of microplastics in the Nigerian Lagos Lagoon ecosystem and found that they were present in the water, sediment, and certain fish species. The contamination was primarily due to plastic debris from recreational, industrial, and domestic waste. Urgent measures are needed to protect Nigeria's coastal and marine ecosystems from plastic pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Nicola Bettoso, Federico Pittaluga, Sergio Predonzani, Antonella Zanello, Alessandro Acquavita
Summary: This study reveals the presence of mercury contamination, particularly in fish, in the Marano and Grado Lagoon region of Italy. However, the concentration of mercury in water is low, while the content in fish varies depending on species size and habits. The study also indicates that the transferability of mercury between sediment and biota is low, and its impact on human health can be disregarded.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Sciences
Matheus Teixeira, Ricardo Cesar, Denis Abessa, Celeste Siqueira, Rodrigo Lourenco, Mariana Vezzone, Yan Fernandes, Gustavo Koifman, Fernando Cesar Perina, Roberto Meigikos dos Anjos, Helena Polivanov, Zuleica Castilhos
Summary: This study assessed the sediment quality of Tijuca Lagoon in Rio de Janeiro, Brazil and found contamination and toxicity, such as PAHs and heavy metals, in the sediments. While PAH and metal concentrations were not significantly correlated with the mortality of burrowing amphipods, domestic sewage contributions and eutrophication had a significant impact on sediment toxicity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Oluwafemi Soetan, Jing Nie, Huan Feng
Summary: This preliminary study aimed to investigate the short- and long-term effects of remedial dredging on metal contamination, dredging efficacy and ecological status of the Lower Passaic River. The short-term results showed effective reduction of heavy metal concentrations, although they increased in the water column, increasing the risk of bioaccumulation in aquatic biota. On the long-term, metal concentrations increased in surface sediments.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Erin A. Hull, Marco Barajas, Kenneth A. Burkart, Samantha R. Fung, Brian P. Jackson, Pamela M. Barrett, Rebecca B. Neumann, Julian D. Olden, James E. Gawel
Summary: The research found elevated arsenic concentrations in Puget Sound region lakes, with significant bioaccumulation in plankton. Factors such as seasonal mixing and near-bottom anoxia influence arsenic uptake. Monitoring and risk assessment of arsenic contamination should focus on shallow zones in lakes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Matteo Feltracco, Elena Barbaro, Elisa Morabito, Roberta Zangrando, Rossano Piazza, Carlo Barbante, Andrea Gambaro
Summary: The study collected samples from the Lagoon of Venice to investigate the presence of the herbicide glyphosate, and found that its content mainly depends on external forcing from river inlets and agricultural lagoon activities, showing spatial and temporal fluctuations in concentration levels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Charlotte Lefebvre, Florane Le Bihanic, Isabel Jalon-Rojas, Edgar Dusacre, Lucas Chassaigne--Viscaino, Jeyan Bichon, Christelle Clerandeau, Benedicte Morin, Sophie Lecomte, Jerome Cachot
Summary: Assessment of microplastic contamination in Arcachon Bay, France was conducted, covering sea surface, water column, intertidal sediments, and wild oysters. Spatial variations in concentration and composition were observed in sea surface and water column samples, while sediment and oyster samples showed no significant differences. Different stations exhibited distinct patterns, with higher concentrations and a variety of polymers at outside stations. The presence of fiber-shaped particles was prominent in most samples. Overall, microplastic pollution was found to be ubiquitous across all stations and sample types.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Ronggen Jiang, Cai Lin, Kaiwen Zhou, Yang Liu, Jinmin Chen, Sumin Wang, Zhong Pan, Xiuwu Sun, Weili Wang, Hui Lin
Summary: The study evaluated the sources and pollution levels of PTEs in Yundang lagoon, China, finding widespread contamination with high ecological risks and toxicity mainly attributed to Hg and Cd. Organic carbon was found to play a critical role in PTEs, and the limited environmental carrying capacity of the lagoon may lead to progressive pollution accumulation.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Jin-Min Li, Chao-Ling Yao, Wei-Han Lin, Rao Y. Y. Surampalli, Tian C. C. Zhang, Tsung-Yu Tseng, Chih-Ming Kao
Summary: The Feng-Sang River in Kaohsiung City, Taiwan, is affected by combustion processes and vehicle traffic pollution, making vehicle traffic pollution the major emission source of PAHs contamination. Concentrations of PAHs vary between seasons and locations, but do not pose significant immediate threats to organisms. Sediments contain diverse microbial species, with Dechloromonas and Rhodobacter being the dominant bacteria in PAHs degradation.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Jinxin Liu, Zhixian Cao, Xichun Li, Weijun Wang, Jingming Hou, Donglai Li, Yue Ma
Summary: Sediments in drainage networks have a significant impact on urban flooding, as shown by the results of this study. The model tests revealed that when a significant portion of the pipe is occupied by sediment deposits, the peak flow discharge decreases while the inundation depth and area increase, indicating a higher flooding risk.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Elena Pavoni, Elisa Petranich, Sergio Signore, Giorgio Fontolan, Annelore Bezzi, Stefano Covelli
Summary: The aim of this research is to investigate the occurrence of mercury (Hg) bound to settling sediment particles (SSP) in the Gulf of Trieste and assess the sedimentary Hg fluxes. The concentration of Hg in the settling sediment particles ranged from 0.61 to 6.87 μg/g, indicating the ongoing contamination from the Isonzo River inputs. The daily Hg fluxes showed significant variability, reaching maximum values following periods of high river flow.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Geoffrey Millard, Chris S. Eckley, Todd P. Luxton, David Krabbenhoft, Jennifer Goetz, John McKernan, John DeWild
Summary: This study measured mercury methylation and demethylation rates using stable isotope tracers in sediments and water of a shallow branch of the Nacimiento Reservoir. The results showed high methylmercury concentrations in the hypolimnetic waters and higher methylation rates in littoral sediments during late summer. Modelled results indicated that the remaining hypolimnetic methylmercury could originate from profundal sediments, highlighting the importance of addressing methylation in both the water column and sediment for remediation strategies.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Elisa Banchi, Paola Del Negro, Mauro Celussi, Francesca Malfatti
Summary: The sediment microbial communities in the Venice Lagoon are influenced by factors such as salinity, particle size, and organic carbon content. The spatial distribution of these communities is stable, with high microbial diversity and bacteria dominating the reads. Differences in biogeochemical processes and cell-cell interaction strategies were observed among different sites in the Lagoon.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Microbiology
Felana Harilanto Andrianjakarivony, Yvan Bettarel, Philippe Cecchi, Sonia Bouchard, Emily Chase, Christelle Desnues
Summary: This study investigated the composition and diversity of aquatic viromes in a highly anthropized lagoon, and identified the presence of viral indicators of faecal contamination as well as human pathogens. The findings suggest that the examination of viromes represents a promising tool for assessing the state of human-induced contamination of aquatic ecosystems.
ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Environmental Sciences
Teodor Stoichev, Antonio Marques, Cristina Marisa R. Almeida
Summary: The study analyzed the correlations between EPOC concentrations in oysters from Aveiro Lagoon with the concentrations of EPOC in water and sediment using linear and generalized additive models. It was found that the behavior of contaminants in water is influenced by octanol/water partition coefficients (K) with clear seasonal trends, while sediments act as reservoirs for hydrophobic compounds with less seasonal variation. The seasonal changes in EPOC concentrations in oysters are determined by a combination of water and sediment factors as well as the type of contaminants.
MARINE POLLUTION BULLETIN
(2021)