Article
Environmental Sciences
Xiangtian Man, Honghui Huang, Fang Chen, Yangguang Gu, Ruize Liang, Boguang Wang, Richard W. Jordan, Shijun Jiang
Summary: A detailed study of a sediment core from Daya Bay in South China has shown three stages of heavy metal deposition over the past century. Prior to the 1980s, heavy metal concentrations were low with limited influence from human activities. From the 1980s to 2000, metal pollution increased, primarily due to anthropogenic activities such as oil and petrochemical industries and fuel combustion. Atmospheric deposition and mariculture also contributed to the increase in certain heavy metals. Since 2000, heavy metal concentrations have declined and stabilized. However, ongoing anthropogenic input of copper and lead poses a moderate pollution risk. The modified pollution index and modified ecological risk consistently indicate a moderate ecological risk from heavy metals in Daya Bay over the past 70 years.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
H. C. Vieira, M. D. Bordalo, A. G. Figueroa, A. M. V. M. Soares, F. Morgado, S. N. Abreu, J. Rendon-von Osten
Summary: The study evaluated mercury levels in three coastal areas of the North Atlantic Ocean and found that mercury has a greater affinity for fine sediment fraction, with sites near potential hotspots showing higher mercury concentrations. However, the total sediment fraction had significantly lower mercury levels. Two sites in the Azores exceeded sediment quality guidelines for mercury in the fine fraction, but adverse biological effects are not expected considering the total sediment fraction. The enrichment factor and geoaccumulation index indicated that the majority of mercury comes from natural sources, with only sites near potential hotspots showing some degree of enrichment and contamination.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
G. F. Birch, J. -H. Lee, T. Gunns
Summary: Port Hacking is a tide-dominated, drowned river valley at the southern edge of the Sydney conurbation with varying levels of ecological risk posed by sedimentary metals. This study provides a baseline evaluation of human-induced changes and risks in the area for future monitoring and management.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Yupei Liu, Zizhen Zhou, Weijin Gong, Yu Xu, Qian Ding, Lu Cui
Summary: Heavy metals in reservoir sediments were analyzed to assess pollution levels and potential risks to water supply safety. The concentration of heavy metals increased in the sediments, with certain metals posing high risks in the main reservoir area. Continuous monitoring showed that heavy metal concentrations in the bottom water exceeded the environmental quality standard, indicating a potential risk of release into the overlying water. This study is of great significance for protecting drinking water safety and human health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Milena Radomirovic, Bojan Tanaskovski, Lato Pezo, Federica Ceccotto, Chiara Cantaluppi, Antonije Onjia, Slavka Stankovic
Summary: A variety of pollution indices were used to assess the contamination of different metal elements in the Boka Kotorska Bay, with Cd and Hg identified as the highest risks and Tivat bay as the most polluted area. The study also found a decreasing trend of Hg over time and highlighted the major concern of Cd in the Bay environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Ecology
G. F. Birch, T. Gunns, S. P. Lound
Summary: This study investigated the environmental condition and ecological risk of Botany Bay and its catchment on the eastern seaboard of Australia, revealing that Cooks River was the most anthropogenically-modified urban river, while Georges River had a lower ecological risk. Botany Bay exhibited minor ecological risk despite the presence of metal-enriched sediments, which can be attributed to the dilution effect of metal-poor coarse material in the bay. The findings highlight the importance of understanding the influence of sedimentary metals on estuarine ecosystems.
REGIONAL STUDIES IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Praxedes Munoz, Valentina Hevia-Hormazabal, Karen Araya, Antonio Maldonado, Marco Salamanca
Summary: This study examines the influence of the oxygen minimum zone and industrialization on metal concentrations in sediments in the SE-Pacific and Caldera Bay. The findings show clear impacts of industrial activities on copper and moderate impacts on iron, lead, and zinc. Additionally, the study observes authigenic enrichment of nutrient type and redox-sensitive elements. The study highlights the importance of natural processes in metal distribution in marine sediments.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Ozgur Ates, Merih Kivanc
Summary: Inoculation of A. arilaitensis and P. putida can increase membrane stability index and carotenoid content, while decreasing malondialdehyde and proline content under different salt stress conditions. The results suggest that A. arilaitensis and P. putida isolates can alleviate the harmful effects of salinity stress and be utilized as biological inoculum to mitigate salinity-induced damage.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2021)
Article
Environmental Sciences
Buket Canbaz Ozturk
Summary: This study investigated the distribution of selected trace metals and associated risks in coastal sediment samples from the Northwest Anatolia coastline of Turkey. Arsenic was found to be the dominant pollutant in the study area, while other metals did not indicate serious anthropogenic pollution.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2021)
Article
Environmental Sciences
Pawel Tomczyk, Bernard Galka, Miroslaw Wiatkowski, Aleksandra Wdowczyk, Lukasz Gruss
Summary: This study analyzed the toxicity of sediments near hydropower plants in Poland and explored the possibility of using them for soil enrichment. The results showed significant differences in heavy metal content between upstream and downstream points of the analyzed plants. The sediments were found to stimulate plant growth to some extent.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Environmental Sciences
Jadranka Pelikan, Nina Majnaric, Maja Mauric Maljkovic, Kristina Pikelj, Bojan Hamer
Summary: There is a lack of comprehensive spatial and temporal data on sediment quality in the Adriatic Sea. In this study, the physicochemical and ecotoxicological analyses of five local coastal sediments were compared with regional averages and sediment quality guidelines of neighbouring countries. The results showed that, except for the open sea, some metals and PAH concentrations in the sediments were slightly higher than the regulated levels. The eluates from the sediments exhibited phytotoxicity, inhibiting the germination and growth of flax seeds. Overall, except for one site, there were no potential ecological impacts on the marine environment according to the applied guidelines.
Article
Environmental Sciences
G. F. Birch, J. -H. Lee, T. Gunns, C. H. Besley
Summary: Using sedimentary metals to assess the environmental status of three ICOLLs in northern Sydney, it was found that the highest sedimentary metal enrichment is in Australian central east coast estuaries, with only a moderate ecological risk. Comparing surficial sediment concentrations from 1996 to 2008 indicated declining metal concentrations, largely supported by subsurface metals data.
MARINE POLLUTION BULLETIN
(2021)
Article
Engineering, Environmental
Boguslaw Michalec, Agnieszka Cupak
Summary: This paper presents an attempt to predict heavy metal pollution in sediment of four planned reservoirs in southern Poland. Based on concentrations of dissolved heavy metals in the watercourses and sediment and water flowing into six existing reservoirs, a relationship was established to estimate the concentrations in the sediments of the planned reservoirs. The forecasted concentrations showed moderate to low pollution levels for lead and nickel, and moderate to high pollution levels for cadmium.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
Article
Ecology
Sanhita Swain, Asim Amitav Pattanayak, Biraja Kumar Sahu, Deepty Ranjan Satapathy, Chitta Ranjan Panda
Summary: The Mahanadi estuary in eastern India is highly vulnerable to pollution from various industries along its bank. A study on heavy metal contamination in surface sediment showed significant seasonal variations, with Cd potentially causing occasional biological effects. Pollution indices indicated contamination by Pb and Cd from external sources, while other metals did not pose significant contamination risks in the sediment.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Engineering, Environmental
Asli Baysal, Hasan Saygin
Summary: This study assessed the ecological and human health risks caused by Cr and Ni in sediments from the industrial marine area in Aydinli Bay, Istanbul, Turkey. The concentrations of Cr and Ni varied in different sampling areas and years, and their levels were correlated with pH, organic matters, and inorganic carbon. The health risk assessments indicated no adverse effects on adults. The results suggested that the contamination of Cr and Ni was lower in Aydinli Bay compared to the Marmara Sea and river connections.
STOCHASTIC ENVIRONMENTAL RESEARCH AND RISK ASSESSMENT
(2023)