| Summary: | Monografia (especialização) - Universidade Federal de Santa Maria, Centro de Ciências Rurais, Curso de Especialização em Educação Ambiental, RS, 2023. The present study was conducted with knowledge that all biomes have been suffering alterations due to anthropic action, which coexist with a lack in formation of conscience in formal and informal environmental education contexts. In the last two centuries alone, two great wars, policies centered on the use of fossil fuels, and the demographic explosion alongside epidemics and extreme social inequalities greatly impacted civilizations. Industrial products, polluting effluents, and deficiencies in public sanitation are some of the factors that have been increasing the levels of nitrogen (N) and phosphorus (P) in the already scarce world reserves of fresh water. Another problem are waters rich in nitrogen and phosphorus in tropical and subtropical zones: the ideal environment for Eichhornia crassipes, popularly known as water hyacinth, a species that is native to the Brazilian Amazon. Its beautiful flowering was marketed to all continents on the planet, except for Antarctica. This plant has been known for centuries by the indigenous South American people as aguapey. A decade ago, it became a matter of concern to the world, when it was considered the worst invasive pest in the Iberian Peninsula, requiring strict European legislation. It has two reproduction modes and there are no considerable predators, thus no natural control. It favors the proliferation of mosquitoes and disease dissemination. On top of that, its dense vegetation pulls the oxygen from springs with all forms of life existing in its surroundings, in addition to preventing the beneficial effects of sunlight reaching the liquid. The damage caused by this species impairs navigation, fishing, tourism, the operation of hydroelectric turbines, as well as all human initiatives involving the multiple uses of water. The control of this invader is a priority and it is an urgency to incentive immediate ...
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