Antibiotic-resistance genes and metals increase in polluted tropical rivers of the Baia da Ilha Grande, Rio de Janeiro, Brazil.

Baia da Ilha Grande (BIG), Rio de Janeiro, Brazil, is one of the largest bays in the world. BIG is important because it serves as a route for the mining and oil industries and plays a vital role in mariculture activities. However, BIG has suffered significant impacts in recent years due to increased pollution and climate change, culminating in a local mariculture collapse.