with approximately 50 km between each sampling site and accessible by the Madre de Dios River (Fig.2A). We selected two sites without any mining (Boca Manu and Chilive, approximately 100 and 50 km from ASGM, respectively
Catchment boundaries corresponding to each sample site were determined using a high-resolution (~500 m) stream drainage direction map for the Amazon River basin71. Supplementary Fig.1c, d was created with ArcMap 10.6, relief shade from Natural Earth dataset (http://www.naturalearthdata.com),...
Pretty Fish They see many beautiful fish in the river, but also some piranhas. They climb onto a wooden boat and find a compass and a map on it. Monkey Trouble They use the compass and the map to find the direction...
In the Amazon basin, particles containing mixed sodium salts are routinely observed and are attributed to marine aerosols transported from the Atlantic Ocean. Using chemical imaging analysis, we show that, during the wet season, fungal spores emitted by the forest biosphere contribute at least 30% ...
A large amount of dust from the Sahara reaches the Amazon Basin, as observed with satellite imagery. This dust is thought to carry micronutrients that could help fertilize the rainforest. However, considering different atmospheric transport conditions, different aridity levels in South America and Afr...
Amazon River, the greatest river of South America and the largest drainage system in the world in terms of the volume of its flow and the area of its basin. The total length of the river is at least 4,000 miles (6,400 km), which makes it slightly shorter
Riverboats and barges navigate the river’s waters, ensuring the smooth flow of trade and commerce along its banks. In the 21st century the river remains essential to the country’s ongoing economic development. For example, the Magdalena basin boasts fertile soils and a temperate climate, ...
Figure 1. Map of monthly surface salinity based on SMAP satellite data in October 2023. (Color scale of salinity is given on the right). Since discharge from the Amazon River occurs at the equator and in the western part of the ocean, its waters are entrained into intense currents that ...
For quality assurance and control, a strict blank control and calibration curve were performed every day. For accuracy, the Certified Reference Material of Human Hair (CRM-13) was analyzed and its recovery rate was above 90%. All the samples were taken to the laboratory of the Chemistry ...