Mercury in the environment
Environmental context. Several predators that eat Antarctic krill may be unintentionally ingesting toxic substances. Studying aspects of krill life to understand the effects of potential increases in Antarctic mercury (Hg) availability revealed that seasons, locations and individual size influence krill Hg concentration. Despite increasing human presence (potential Hg sources) in Antarctica, krill Hg content remains stable, and evidence suggests that Hg accumulates in predators by both short (krill-based) and longer food chains. (Image credit: the authors.)
This article belongs to the collection: Mercury in the environment.
Environmental context. Mercury (Hg) has been extensively used throughout human history, leaving a persistent environmental legacy that continues to present challenges for pollution management and public health. This highlight focuses on the importance of a multidisciplinary approach to enhance our knowledge of mercury’s historical uses and emissions, supporting more effective strategies to address its environmental and societal impacts.
This article belongs to the collection: Mercury in the environment.
Environmental context. The pristine oligotrophic lakes of Andean Patagonia are influenced by volcanic eruptions and atmospheric deposition. This study focuses on mercury (Hg) dynamics in two connected lakes in a natural Hg hotspot of the southern Andes. The lake waters have low dissolved organic carbon and moderate to high Hg concentrations, resulting in high Hg availability. These promote Hg binding to natural particulates, thereby favouring its incorporation into food webs. (Image credit: Carolina Soto Cárdenas)
This article belongs to the collection: Mercury in the environment.
Environmental context. Wet deposition is a primary mechanism for transferring atmospheric mercury (Hg) to the Earth’s surface. In Brazil, as well as in the rest of the Southern Hemisphere, only limited data on wet Hg deposition are available. This article addresses this gap by providing a comprehensive dataset from nearly 2 years of monitoring, focusing on mercury concentrations in rainwater and wet Hg deposition in Campinas, one of the largest industrial and populated regions in São Paulo state (south-east Brazil). (Image credit: José L. M. Viana.)
This article belongs to the collection: Mercury in the environment.
Environmental context. Understanding how mercury cycles through the environment is crucial for protecting ecosystems and human health. Our study is among the first to measure mercury concentrations in Eucalyptus forest soils and litter, and estimate emissions from prescribed burns, addressing a significant gap in current knowledge. These new data enhance our understanding of mercury cycling in Australia and contribute to the global information on the biogeochemical cycle of mercury. (Image credit: Larissa Schneider)
This article belongs to the collection: Mercury in the environment.
Environmental context. Mercury (Hg) is a non-essential metal that can accumulate in aquatic biota, including top predators such as elasmobranchs (sharks and rays), and biomagnifying along the trophic web. This study provides data on Hg total, methylmercury (MeHg) and stable isotopes (δ13C and δ15N) for 13 elasmobranch taxa in the Equatorial Western Atlantic Ocean, relating biological and ecological properties with Hg concentrations and the estimated human consumption risk. (Image credit: Andréia dos Santos Campos.)
This article belongs to the collection: Mercury in the environment.
