Mining activities have significantly affected the Neotropical freshwater ichthyofauna, the
most diverse in the world. However, no study has systematized knowledge on the subject. In …

The Tocantins-Araguaia River basin is the largest basin located entirely in the Brazilian
territory. The high degree of endemism of its ichthyofauna has been revealed in several …

Many studies have shown that biodiversity regulates multiple ecological functions that are
needed to maintain the productivity of a variety of ecosystem types. What is unknown is how …

The field study aims to address identified research gaps by providing valuable information
on the concentration, spatial distribution, pollution levels, and source apportionment of toxic …

Abstract The Araguaia River floodplain is an important biogeographic boundary between the
two largest South American biomes: the Cerrado (Brazilian Savanna) and the Amazon …

Mercury (Hg) is a chemical element widely present in the Earth's crust. However, its high
toxicity and ability to accumulate in organisms and biomagnify through food chains …

The composition and distribution of microplastics (MPs) in the Brazilian Amazon Continental
Shelf surface waters are described for the first time. The study was conducted during the …

The role of Amazon on the transport and as a source of microplastics (MPs) to the ocean is
uncertain. This study is an assessment on the distribution of MPs and microfibers (MFs) in a …

Land use and climate change are expected to significantly alter hydrology and consequently
electricity production in countries extremely dependent on their water resources, such as …

Approximately 47% of the Brazilian savanna (Cerrado) has already been converted, mainly
for agriculture and livestock activities. With low legal protection and few legally protected …