Terrestrial inputs boost organic carbon accumulation in Mexican mangroves.

Despite their ability to mitigate climate change by efficiently absorbing atmospheric carbon dioxide (CO) and acting as natural long-term carbon sinks, mangrove ecosystems have faced several anthropogenic threats over the past century, resulting in a decline in the global mangrove cover. By using standardized methods and the most recent Bayesian tracer mixing models MixSIAR, this study aimed to quantify source contributions, burial rates, and stocks of organic carbon (C) and explore their temporal changes (∼100 years) in seven lead-210 dated sediment cores collected from three contrasting Mexican mangrove areas. The spatial variation in C burial rates and stocks in these blue carbon ecosystems primarily depended on the influence of local rivers, which controlled C sources and fluxes within the mangrove areas.

Hexachlorophene storage in a burn patient associated with encephalopathy.

Hexachlorophene (HCP), a chlorinated phenolic hydrocarbon with bacteriostatic properties against Staphylococcus, is used in a number of topical products. Absorption through normal and damaged human skin has been appreciated and neurologic changes have been described in experimental animals, but instances of human toxicity have been reported infrequently. A 10-year-old boy who sustained a 25% burn did well initially but died in the second week of convalescence with hyperthermia, lower-extremity weakness, and cerebral edema.