Watershed monitoring is vital for ecosystem sustainability and contamination source identification. Such studies are scarce in the Amazon region. To address this, an integrated study was conducted to assess variations in baseline concentrations of Fe and potentially toxic elements in the Gelado Creek Watershed (GCW), eastern Amazon. This watershed, situated in the Carajás Mineral Province, hosts two world-class Fe mines with t...

The life history of insular gecarcinid crabs is divided into a marine larval and an adult phase, adapted to the terrestrial environment. As adults, individuals migrate seasonally to locations near the sea, engaging in reproductive behaviors. Therefore, identifying breeding and recruitment areas is crucial for the conservation of insular gecarcinids, especially for those endangered, such as Johngarthia lagostoma (H. Milne Edwar...