João Paulo de Sá Felizardo

Life Sciences

Eutrophication is a process that increases the availability of some nutrients in aquatic ecosystems due to the infiltration of pollution. In this way, the balance of food webs in marine environments is disrupted. Using stable isotopes to track the transfer of components, scientist João Paulo de Sá Felizardo’s project aims to evaluate changes in the food chain of various marine ecosystems.

Graduated in biological sciences from the Federal University of the State of Rio de Janeiro, Felizardo pursued a master’s degree in ecology at the Federal University of Rio de Janeiro and a doctorate in marine biology and coastal environments at the Universidade Federal Fluminense. He also completed a postdoctoral at the Instituto de Estudos do Mar Almirante Paulo Moreira.

Eclecticism and a vocation for transdisciplinarity naturally led him towards the path of ecology. His scientific expeditions covered diverse ecosystems, from Guanabara Bay to Antarctica. Carioca and from Botafogo, he also likes samba and the heavy metal of the band Avenged Sevenfold. In his free time, he plays role-playing games in fantasy settings, such as Dungeons and Dragons, and dedicates himself to CrossFit.


What are the impacts of eutrophication on marine food webs?
Science / Life Sciences

Eutrophication occurs due to domestic, industrial and agricultural pollution entering aquatic ecosystems, increasing the availability of nutrients such as nitrogen and phosphorus. This results in the accumulation of macroalgae and excessive phytoplankton growth, negatively affecting marine metabolism and causing significant ecological and socioeconomic impacts. This project seeks to understand how eutrophication affects the nutritional quality of tropical marine organisms. To achieve this objective, we will analyze different marine and coastal ecosystems affected by eutrophication. We will use stable isotopes to track the transfer of essential components, such as carbon and omega-3 and omega-6 fatty acids, from the base of the food chain to the fish. With this, we will be able to understand the sources of these components and the changes in nutritional quality throughout the food chain. This research will contribute to understanding the impacts of eutrophication on marine food webs and help improve the management of tropical ecosystems.

Open Calls

Chamada conjunta de apoio a pós-docs negros e indígenas em ecologia nº 1